2010 Cadillac CTS Sedan AWD V6-3.6L Page 767

2010 Cadillac CTS Sedan AWD V6-3.6L Page 767

Circuit/System Description

North America

The brake pedal position sensor is used to sense the action of the driver application of the brake pedal. The brake pedal position sensor provides an

analog voltage signal that will increase as the brake pedal is applied. The body control module (BCM) provides a low reference signal and a 5 V

reference voltage to the brake pedal position sensor. When the variable signal reaches a voltage threshold indicating the brakes have been applied,

the BCM will apply battery voltage to the right and left stop lamp control circuits, transmission control module (TCM), engine control module

(ECM), and center high mounted stop lamp (CHMSL) control circuit.

European

The brake pedal position sensor is used to sense the action of the driver application of the brake pedal. The brake pedal position sensor provides an

analog voltage signal that will increase as the brake pedal is applied. The body control module (BCM) provides a low reference signal and a 5 V

reference voltage to the brake pedal position sensor. When the variable signal reaches a voltage threshold indicating the brakes have been applied,

the BCM will apply battery voltage to stop lamp relay coil side control circuit, transmission control module (TCM), engine control module (ECM),

and center high mounted stop lamp (CHMSL). When the stop lamp relay receives battery voltage from the BCM, the relay coil is energized and the

stop lamp relay switch contacts close applying battery voltage from the STOP LAMPS fuse to illuminate the rear stop lamps and trailer stop lamps.

Conditions for Running the DTC

* Battery voltage must be between 9-16 V.

* Brakes APPLIED.

Conditions for Setting the DTC

DTC C0277 06 will set for the following conditions:

* The BCM detects a short to ground or an open/high resistance in the brake pedal position sensor signal circuit.

* The BCM detects a short to ground or an open/high resistance in the brake pedal position sensor 5 V reference circuit.

DTC C0277 07 will set for the following conditions:

* The BCM detects a short to battery voltage in the brake pedal position sensor signal circuit.

* The BCM detects an open/high resistance in the brake pedal position sensor low reference circuit.

C0277 09

The BCM detects the brake pedal position sensor signal is changing faster than possible under normal operating conditions.

2010 Cadillac Truck SRX AWD V6-3.0L Page 1646

2010 Cadillac Truck SRX AWD V6-3.0L Page 1646

DTCs P0667, P0668, and P0669 are Type B DTCs.

Diagnostic Aids

The transmission control module (TCM) temperature sensor is located inside of the control solenoid valve assembly and its output should resemble

that of the transmission fluid temperature (TFT) sensor output.

Reference Information

Connector End View Reference

* Component Connector End Views (See: Diagrams/Connector Views/Connector End Views By Name)

* Inline Harness Connector End Views (See: Diagrams/Connector Views/Multiple Junction Connector/Connector End Views By Number)

Description and Operation

Electronic Component Description (See: Transmission and Drivetrain/Automatic Transmission/Transaxle/Description and Operation/6T70/6T75 -

Automatic Transmission/Electronic Component Description) for control solenoid valve assembly

Electrical Information Reference

* Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Circuit

Testing/Circuit Testing)

* Connector Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic

Procedures/Connector Repairs/Connector Repairs)

* Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component Tests and General Diagnostics/General

Electrical Diagnostic Procedures/Circuit Testing/Testing for Intermittent Conditions and Poor Connections)

* Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Wiring

Repairs/Wiring Repairs)

DTC Type Reference

Powertrain Diagnostic Trouble Code (DTC) Type Definitions (See: Diagnostic Trouble Code Descriptions/Powertrain Diagnostic Trouble Code

(DTC) Type Definitions)

Scan Tool Reference

Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information

Circuit/System Verification

1. Engine idling at normal operating temperature, verify the scan tool TCM Temperature parameter is between -247 and +247掳C (-412 and

+477掳F).

瀚慖f not within the specified range, replace the control solenoid valve assembly.

2. Operate the vehicle at 64 km/h (40 mph) for 10 minutes. Monitor the TCM Temperature, TCM Power-up Temperature, and the Trans. Fluid

Temp. parameters with a scan tool. The TCM Temperature and the Trans. Fluid Temp. parameters should be within 20掳C (36掳F) of each

other, and the TCM Temperature and TCM Power-up Temperature parameters should be within 10掳C (18掳F) of each other.

瀚慖f the TCM Temperature and TCM Power-up Temperature parameters are not within 10掳C (18掳F), or the TCM Temperature and Trans.

Fluid Temp. parameters are not within 20掳C (36掳F), then replace the control solenoid valve assembly.

3. Operate the vehicle within the Conditions for Running the DTC to verify the DTC does not reset. You may also operate the vehicle within the

conditions that you observed from the Freeze Frame/Failure Records data.

Repair Instructions

Important:

* Perform the Service Fast Learn Adapts (See: Transmission and Drivetrain/Automatic Transmission/Transaxle/Testing and

Inspection/Programming and Relearning) following all transmission related repairs.

* Before replacing the TCM, perform the Control Solenoid Valve and Transmission Control Module Assembly Inspection (See:

Transmission and Drivetrain/Automatic Transmission/Transaxle/Testing and Inspection/Component Tests and General

Diagnostics/6T70/6T75 - Automatic Transmission/Control Solenoid Valve and Transmission Control Module Assembly Inspection).

Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.

Control Module References (See: Testing and Inspection/Programming and Relearning) for control solenoid valve assembly replacement, setup,

Lexus is f vs Chevrolet Cameron zl1

2010 Cadillac CTS Sedan AWD V6-3.6L Page 974

2010 Cadillac CTS Sedan AWD V6-3.6L Page 974

DTC P080A

Diagnostic Instructions

* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System

Check - Vehicle) prior to using this diagnostic procedure.

* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an

overview of the diagnostic approach.

* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure

Instructions)provides an overview of each diagnostic category.

DTC Descriptor

DTC P080A

- Clutch Pedal Position (CPP) Not Learned

Circuit/System Description

The clutch pedal position (CPP) is a three wire sensor, connected to a 5-volt reference circuit, a low reference circuit, and a signal circuit. The

engine control module (ECM) supplies 5-volts to the CPP sensor, and also provides a sensor ground path on the low reference circuit. The CPP

sensor sends a voltage signal to the ECM on the signal circuit. The voltage on the signal circuit will vary from a voltage less than or equal to 5-volts

when the clutch pedal is released to a voltage less than or equal to 1.5-volts when the clutch pedal is applied.

Conditions for Running the DTC

Clutch pedal fully applied.

Conditions for Setting the DTC

Clutch pedal position not learned.

Action Taken When the DTC Sets

P080A is a Type B DTC.

Conditions for Clearing the MIL/DTC

P080A is a Type B DTC.

Reference Information

Schematic Reference

Manual Transmission Schematics (See: Transmission and Drivetrain/Manual Transmission/Transaxle/Diagrams/Electrical Diagrams/Aisin AY6 -

Manual Transmission)

Connector End View Reference

Component Connector End Views (See: Diagrams/Connector Views)

Description and Operation

Transmission System Description and Operation (See: Transmission and Drivetrain/Manual Transmission/Transaxle/Description and

Operation/Aisin AY6 - Manual Transmission)

Electrical Information Reference

* Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics/Circuit Testing/Circuit Testing)

* Connector Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/Connector Repairs/Connector Repairs)

* Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component Tests and General Diagnostics/Circuit

Testing/Testing for Intermittent Conditions and Poor Connections)

* Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/Wiring Repairs/Wiring Repairs)

DTC Type Reference

Powertrain Diagnostic Trouble Code (DTC) Type Definitions (See: Diagnostic Trouble Code Descriptions/Powertrain Diagnostic Trouble Code

(DTC) Type Definitions)

Scan Tool Reference

Control Module References (See: Testing and Inspection/Programming and Relearning)for scan tool information.

Circuit/System Verification

2010 Mercedes Benz C 300 (204.054) V6-3.0L (272.947) Page 2348

1.1.3.2.2.4. Check power supply at control unit N15/3 (ETC [EGS] control unit).

Test 1.1.3.2.2.4.1: Guided test

1.1.3.2.2.4.1. Guided test

Operation number of operation texts and work units or standard texts and flat rates:27-0641Possible cause

- Battery has incorrect charge state or is faulty.

- Local undervoltage of component N15/3 (ETC [EGS] control unit)

Test sequence

- Erase fault memory.

Continue with button "F2"

Warning!Communication with ECU required.

1.1.3.2.2.5. Check power supply at control unit N15/5 (Electronic selector lever module control unit).

Operation number of operation texts and work units or standard texts and flat rates:27-0641Test sequence

- Switch off ignition.

- Disconnect connector at component N15/5 (Electronic selector lever module control unit).

- Switch on ignition.

- [A.2] Measure direct voltage with multimeter between 2 and 1 [A.1]

Status of relevant actual value:

- Supply voltage (tml. 15):Warning! Communication with ECU required.

Specified value

- Voltage[7.0...16.0] V

Question

- Is the measurement value OK?

YES

The measurement value is OK.Possible cause and remedy

- Replace component Floor-mounted shift.

End of test

NO

The measurement value is not OK.Possible cause and remedy

- Check fuse f55 (voltage supply from control unit ESM) in component N10/1 (Front SAM control unit with fuse and relay module).

- Check all affected plugs, connectors and electrical components for damage, loose contact, corrosion etc. and repair if necessary.

End of test

1.1.3.2.2.6. Check power supply at control unit N15/6 (Sprintshift control module).

Test voltage supply of circuit 30.

Operation number of operation texts and work units or standard texts and flat rates:26-0641Test sequence

- Switch off ignition.

- Connect socket box to component N15/6 (Sprintshift control module).

- Measure direct voltage with multimeter between sockets (B.36) 36 and (B.38) 38 of the 126-pole socket box tester.

2010 Cadillac Truck SRX FWD V6-3.0L Page 253

2010 Cadillac Truck SRX FWD V6-3.0L Page 253

* The affected output will be switched off for hardware protection.

* All stepper motors are deactivated.

B0223, B022A, B0233, B0408, B0418, B0428 or B3531

* The affected output will be switched off for hardware protection.

* The affected stepper motor is deactivated.

Conditions for Clearing the DTC

The condition for setting the DTC is no longer present.

Reference Information

Schematic Reference

HVAC Schematics (See: Heating and Air Conditioning/Diagrams/Electrical Diagrams)

Connector End View Reference

Component Connector End Views (See: Diagrams/Connector Views/Connector End Views By Name)

Description and Operation

Automatic HVAC Description and Operation (See: Heating and Air Conditioning/Description and Operation)

Electrical Information Reference

* Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Circuit

Testing/Circuit Testing)

* Connector Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic

Procedures/Connector Repairs/Connector Repairs)

* Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component Tests and General Diagnostics/General

Electrical Diagnostic Procedures/Circuit Testing/Testing for Intermittent Conditions and Poor Connections)

* Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Wiring

Repairs/Wiring Repairs)

Scan Tool Reference

Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information

Circuit/System Verification

1. Verify that DTC B023A 02 is not present.

瀚慖f DTC is present, refer to Actuator Power Supply Malfunction.

2. Verify that DTC B0223, B022A, B0233, B0408 or B0418 is not set.

瀚慖f DTC is present, refer to Actuator Malfunction.

Circuit/System Testing

Actuator Power Supply Malfunction

1. Ignition OFF, disconnect the harness connector at the appropriate actuator.

2. Ignition ON, verify that a test lamp illuminates between the 12 volt referance circuit terminal 2 and ground.

瀚慖f the test lamp does not illuminate, test the 12 volt referance circuit for a short to ground or an open/high resistance. If the circuit tests

normal test or replace the K33 HVAC control module.

Actuator Malfunction

1. Ignition OFF, disconnect the X3 and X4 harness connector at the K33 HVAC Control Module.

2. Ignition ON, test for 80-200 ohm between the 12 V reference voltage circuit terminal 15 X3 and each control circuit terminal of the

appropriate actuator.

瀚慖f less than the specified range, test for the 12 V reference voltage circuit and the control circuit for a short circuit. If the circuits test

normal, replace the appropriate actuator.

瀚慖f greater than the specified range, test the 12 V reference voltage circuit and the control circuit for an open/high resistance. If the circuits

test normal, replace the appropriate actuator.

3. If all circuits test normal, replace the K33 HVAC Control Module

Repair Instructions

Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.

2010 Cadillac CTS Sedan AWD V6-3.6L Page 108

2010 Cadillac CTS Sedan AWD V6-3.6L Page 108

* Driver roof rail module terminal B and SDM terminal 18 X2

* Passenger roof rail module terminal B and SDM terminal 54 X2

* Left side impact module terminal 1 and SDM terminal 14 X2

* Right side impact module terminal 1 and SDM terminal 15 X2

* Driver seat belt pretensioner terminal 2 and SDM terminal 10 X2

* Passenger seat belt pretensioner terminal 2 and SDM terminal 11 X2

瀚慖f greater than the specified range, test the control circuit for an open/high resistance.

12. If all circuits test normal, replace the SDM.

Repair Instructions

Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.

* Instrument Panel Inflatable Restraint Module Replacement (See: Restraints and Safety Systems/Air Bag Systems/Air Bag/Service and

Repair/Removal and Replacement/Instrument Panel Inflatable Restraint Module Replacement)

* Roof Side Rail Inflatable Restraint Module Replacement (See: Restraints and Safety Systems/Air Bag Systems/Air Bag/Service and

Repair/Removal and Replacement/Roof Side Rail Inflatable Restraint Module Replacement)

* Seat Belt Retractor Pretensioner Replacement - Front (W2E) (See: Restraints and Safety Systems/Seat Belt Systems/Seat Belt

Tensioner/Service and Repair/Removal and Replacement/Seat Belt Retractor Pretensioner Replacement - Front (W2E))Seat Belt Retractor

Pretensioner Replacement - Front (AQ9) (See: Restraints and Safety Systems/Seat Belt Systems/Seat Belt Tensioner/Service and

Repair/Removal and Replacement/Seat Belt Retractor Pretensioner Replacement - Front (AQ9))

* SIR/SRS Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/Wiring Repairs/SIR/SRS Wiring Repairs)

* Control Module References (See: Testing and Inspection/Programming and Relearning) for SDM replacement, setup, and programming

B0021

DTC B0014-B0045

Diagnostic Instructions

* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System

Check - Vehicle) prior to using this diagnostic procedure.

* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an

overview of the diagnostic approach.

* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure

Instructions) provides an overview of each diagnostic category.

DTC Descriptors

DTC B0014 01

- Driver Side Deployment Loop Short to Battery - Seat Air Bag

DTC B0014 02

- Driver Side Deployment Loop Short to Ground - Seat Air Bag

DTC B0014 04

- Driver Side Deployment Loop Open Circuit - Seat Air Bag

DTC B0014 0D

- Driver Side Deployment Loop Resistance Above Threshold - Seat Air Bag

DTC B0014 0E

- Driver Side Deployment Loop Resistance Below Threshold - Seat Air Bag

DTC B0015 01

- Driver Pretensioner Deployment Loop Short to Battery - Retractor

DTC B0015 02

- Driver Pretensioner Deployment Loop Short to Ground - Retractor

DTC B0015 04

- Driver Pretensioner Deployment Loop Open Circuit - Retractor

DTC B0015 0D

- Driver Pretensioner Deployment Loop Resistance Above Threshold - Retractor

DTC B0015 0E

- Driver Pretensioner Deployment Loop Resistance Below Threshold - Retractor

What does the 2021 Camry look like?

What does the 2021 Camry look like?

Accentuating the revised design, the 2021 Camry augments its exterior paint palette with new Blueprint replacing Blue Streak Metallic and a new, exclusive color for the Camry TRD, Ice Edge with a two-tone Midnight Black Metallic roof.

2021 MERCEDES BENZ GLC Specification & Presentation - Car and Driver

2010 Cadillac Truck SRX FWD V6-3.0L Page 435

2010 Cadillac Truck SRX FWD V6-3.0L Page 435

Schematics)

* Video System Schematics (See: Accessories and Optional Equipment/Diagrams/Electrical Diagrams/Video System Schematics)

Connector End View Reference

Component Connector End Views (See: Diagrams/Connector Views/Connector End Views By Name)

Description and Operation

Navigation System Description and Operation (See: Accessories and Optional Equipment/Description and Operation/Navigation System)

Electrical Information Reference

* Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Circuit

Testing/Circuit Testing)

* Connector Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic

Procedures/Connector Repairs/Connector Repairs)

* Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component Tests and General Diagnostics/General

Electrical Diagnostic Procedures/Circuit Testing/Testing for Intermittent Conditions and Poor Connections)

* Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Wiring

Repairs/Wiring Repairs)

Scan Tool Reference

Control Module References (See: Testing and Inspection/Programming and Relearning)for scan tool information

Circuit/System Testing

1. Ignition OFF, radio OFF, radio B+ fuse removed, disconnect all of the connectors listed below:

* Audio Amplifier X3

* Navigation Information Display X1 (display screen) (if equipped)

* Navigation Information Display X2 (actuator) (if equipped)

* Driver Seatback Video Display (if equipped)

* Passenger Seatback Video Display (if equipped)

2. Reinstall the radio B+ fuse. Ignition ON, radio ON, verify that DTC B1265 is NOT set as current.

瀚慖f DTC B1265 is set as current, test the entertainment remote enable circuit for a short to ground. If the circuit tests normal replace the

radio.

3. Verify that a test lamp illuminates between the entertainment remote enable circuit terminal listed below and ground:

* Audio Amplifier X3 terminal 8

* Navigation Information Display X1 terminal 4 (display screen) (if equipped)

* Navigation Information Display X2 terminal 3 (actuator) (if equipped)

* Driver Seatback Video Display terminal 2 (if equipped)

* Passenger Seatback Video Display terminal 2 (if equipped)

瀚慖f the test lamp does not illuminate, test the entertainment remote enable circuit for a short to ground or an open/high resistance. If the

circuit tests normal replace the radio.

4. Re-connect the harness connectors listed below one at a time. Verify that DTC B1265 does NOT set as current as each component is

re-connected.

* Audio Amplifier X3

* Navigation Information Display X1 (display screen) (if equipped)

* Navigation Information Display X2 (actuator) (if equipped)

* Driver Seatback Video Display (if equipped)

* Passenger Seatback Video Display (if equipped)

瀚慖f DTC B1265 sets as current, replace the module/component that was just re-connected.

Repair Instructions

Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the repair.

* Radio, Video, Audio Disc Player, and Navigation Information Display Replacement (See: Accessories and Optional Equipment/Radio,

Stereo, and Compact Disc/Radio/Stereo/Service and Repair/Radio, Video, Audio Disc Player, and Navigation Information Display

Replacement)

* Radio, Video, Audio Disc Player, and Navigation Information Display Actuator Replacement (See: Accessories and Optional

Equipment/Radio, Stereo, and Compact Disc/Radio/Stereo/Service and Repair/Radio, Video, Audio Disc Player, and Navigation Information

2022 Infiniti QX55 Review, Pricing, and Specs - Car and Driver more deta...

2010 Cadillac CTS Sedan AWD V6-3.6L Page 617

2010 Cadillac CTS Sedan AWD V6-3.6L Page 617

DTC B3821 or B3824

Diagnostic Instructions

* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System

Check - Vehicle) prior to using this diagnostic procedure.

* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an

overview of the diagnostic approach.

* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure

Instructions) provides an overview of each diagnostic category.

DTC Descriptors

DTC B3821 00

- Left Rear Window Relay Power Circuit

DTC B3824 00

- Right Rear Window Relay Power Circuit

Diagnostic Fault Information

Circuit/System Description

The body control module (BCM) monitors the window lockout command from the driver door module (DDM). When the rear window switch

operation is authorized, the BCM signal voltage drops approximately 5 volts to the rear window switches allowing for normal window operation

from the rear switches. If the rear window lockout function is commanded, the BCM signal voltage is at B+ voltage which disables the rear window

switches and the rear windows will only operate when the BCM receives a command from the driver master control.

Conditions for Running the DTC

* Battery voltage is between 9-16 volts.

* The ignition is ON.

Conditions for Setting the DTC

B3821 00

The BCM detects a fault in the left rear window lockout circuit.

2010 Mercedes Benz C 300 (204.054) V6-3.0L (272.947) Page 2712

Test 1.3.2.1.9: Check power supply at control unit N93 (Central gateway control unit).

Test 1.3.2.1.10: Check power supply at control unit Y3/8n4 (Fully integrated transmission control (VGS) control unit).

1.3.2.1.1. Check power supply at control unit ME-SFI.

Test 1.3.2.1.1.1: Test voltage supply of circuit 30.

Test 1.3.2.1.1.2: Test current consumption of component N10/1kR (Circuit 87 relay, engine).

Test 1.3.2.1.1.3: Test voltage supply of circuit 15.

1.3.2.1.1.1. Test voltage supply of circuit 30.

Connect socket box to component N3/10 (ME-SFI [ME] control unit).

Figure legend

- A -ConnectionTest cable 35-pin socket box

- 001 -Sockets of component N3/10 (ME-SFI [ME] control unit)

- 05 -35-pin socket box

- 050 -126-pin socket box

- 108 -Test cable 266 589 01 63 00

- N3/10 (ME-SFI [ME] control unit)

- II 1-63ConnectionTest cable

- III 64-126ConnectionTest cable

Warning!

-

- Connection A of test cable 108 may NOT be connected to connection B of the 126-pin socket box (050).

Continue to test with button F2

Test voltage supply of circuit 30.

Test sequence

- Measure direct voltage with multimeter between sockets [ F.2 ] 98 and [ F.16 ] 112 of the 35-pole socket box tester.

- Switch on ignition.

Specified value

- Voltage[11.0...15.0] V

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2010 Cadillac Truck SRX AWD V6-3.0L Page 1977

2010 Cadillac Truck SRX AWD V6-3.0L Page 1977

瀚慖f not the specified value, test for the following conditions in the ECM side of the harness:

* An open/high resistance in the high voltage supply circuit

* An open/high resistance in the high voltage control circuit

* A short to ground in the high voltage control circuit

* A short to voltage in the high voltage supply circuit

瀚慖f the circuits test normal, replace the K20 ECM.

Note: Testing for the following steps is performed on the fuel injector side of the multi-way harness connector. It may be necessary to

remove the intake manifold to isolate the condition.

4. Ignition OFF, measure the resistance between the appropriate high voltage supply circuit and ground. The DMM should display OL ohm.

瀚慖f less than the specified range, test the high voltage supply circuit and the high voltage control circuit for a short to ground. If the

circuits/connections test normal, test or replace the appropriate Q17 fuel injector(s).

5. Test for 2-3 ohm between the appropriate high voltage supply circuit and high voltage control circuit.

瀚慖f less than the specified range, test for a short between the high voltage supply circuit and high voltage control circuit. If the

circuits/connections test normal, test or replace the appropriate Q17 fuel injector(s).

瀚慖f greater than the specified range, test the high voltage supply circuit and high voltage control circuit for an open/high resistance. If the

circuits/connections test normal, test or replace the appropriate Q17 fuel injector.

Component Testing

* Fuel Injector Solenoid Coil Test (LAU) (See: Powertrain Management/Fuel Delivery and Air Induction/Fuel Injector/Testing and Inspection

)Fuel Injector Solenoid Coil Test (LF1, LFW) (See: Powertrain Management/Fuel Delivery and Air Induction/Fuel Injector/Testing and

Inspection)

* Fuel Injector Balance Test (LAU) (See: Powertrain Management/Computers and Control Systems/Testing and Inspection/Component Tests

and General Diagnostics/Fuel Injector Balance Test)Fuel Injector Balance Test (LF1, LFW) (See: Powertrain Management/Computers and

Control Systems/Testing and Inspection/Component Tests and General Diagnostics/Fuel Injector Balance Test)

Repair Instructions

Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.

* Fuel Injection Fuel Rail Assembly Replacement - Bank 1 (LF1) (See: Powertrain Management/Fuel Delivery and Air Induction/Fuel

Rail/Service and Repair/Fuel Injection Fuel Rail Assembly Replacement - Bank 1)

* Fuel Injection Fuel Rail Assembly Replacement - Bank 2 (LF1) (See: Powertrain Management/Fuel Delivery and Air Induction/Fuel

Rail/Service and Repair/Fuel Injection Fuel Rail Assembly Replacement - Bank 2)

* Control Module References (See: Testing and Inspection/Programming and Relearning) for ECM replacement, setup, and programming

P2150

DTC P2147, P2148, P2150, P2151, P2153, P2154, P2156, P2157, P216B, P216C, P216E, or P216F (LF1)

Diagnostic Instructions

* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System

Check - Vehicle) prior to using this diagnostic procedure.

* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an

overview of the diagnostic approach.

* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure

Instructions) provides an overview of each diagnostic category.

DTC Descriptors

DTC P2147

- Cylinder 1 Injector High Control Circuit Low Voltage

DTC P2148

- Cylinder 1 Injector High Control Circuit High Voltage

DTC P2150

- Cylinder 2 Injector High Control Circuit Low Voltage

DTC P2151

- Cylinder 2 Injector High Control Circuit High Voltage

2010 Cadillac CTS Sedan AWD V6-3.6L Page 808

2010 Cadillac CTS Sedan AWD V6-3.6L Page 808

* The fuel level is greater than 10 %.

* The throttle position (TP) is between 0-70 %.

* The DTCs run continuously when the above conditions are met for 3 s.

P2A00 or P2A03

* DTCs P0030, P0036, P0053, P0054, P0068, P0101, P0102, P0103, P0106, P0107, P0108, P0112, P0113, P0116, P0117, P0118, P0120,

P0121, P0122, P0123, P0128, P0131, P0132, P0133, P0134, P0135, P0137, P0138, P0140, P0141, P0171, P0172, P0174, P0175, P0201,

P0202, P0203, P0204, P0205, P0206, P0207, P0208, P0220, P0222, P0223, P0300, P0301, P0302, P0303, P0304, P0305, P0306, P0307,

P0308, P0442, P0443, P0446, P0449, P0455, P0496, P1133, P1516, P2101, P2119, P2135, P2176 are not set.

* The engine is running.

* The system voltage is between 10-32 V.

* The ECT Sensor parameter is more than 0掳C (32掳F).

* DTCs P2A00 and P2A03 run continuously when the above conditions are met.

Conditions for Setting the DTC

P0131, P0137, P0151, or P0157

* The ECM detects that the HO2S voltage is less than 50 mV.

* The DTCs set within 50 s when the above condition is met.

P0132, P0138, P0152, or P0158

* The ECM detects that the HO2S voltage is greater than 1,050 mV.

* The DTCs set within 50 s when the above condition is met.

P2A00 or P2A03

* The ECM detects that the Fuel Control Loop Status parameter is open.

* DTCs P2A00 and P2A03 set within 30 s when the above condition is met.

Action Taken When the DTC Sets

DTCs P0131, P0132, P0137, P0138, P0151, P0152, P0158, P2A00 and P2A03 are Type B DTCs.

Conditions for Clearing the MIL/DTC

DTCs P0131, P0132, P0137, P0138, P0151, P0152, P0158, P2A00 and P2A03 are Type B DTCs.

Reference Information

Schematic Reference

Engine Controls Schematics (LLT) (See: Diagrams/Electrical Diagrams/Powertrain Management/System Diagram)Engine Controls Schematics

(LF1) (See: Diagrams/Electrical Diagrams/Powertrain Management/System Diagram)

Connector End View Reference

Component Connector End Views (See: Diagrams/Connector Views)

Electrical Information Reference

* Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics/Circuit Testing/Circuit Testing)

* Connector Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/Connector Repairs/Connector Repairs)

* Heated Oxygen Sensor Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/Wiring Repairs/Heated

Oxygen Sensor Wiring Repairs)

* Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component Tests and General Diagnostics/Circuit

Testing/Testing for Intermittent Conditions and Poor Connections)

* Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/Wiring Repairs/Wiring Repairs)

DTC Type Reference

Powertrain Diagnostic Trouble Code (DTC) Type Definitions (See: Diagnostic Trouble Code Descriptions/Powertrain Diagnostic Trouble Code

(DTC) Type Definitions)

Scan Tool Reference

Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information

Circuit/System Verification

1. Ignition ON, observe the DTC information with a scan tool. Verify no B52 HO2S heater DTCs are set.

瀚慖f a B52 HO2S heater DTC is set, refer to Diagnostic Trouble Code (DTC) List - Vehicle (See: Diagnostic Trouble Code

Descriptions/Diagnostic Trouble Code (DTC) List - Vehicle).

2. Engine running, observe the appropriate scan tool B52 HO2S voltage parameter. The reading should be within the range of 50-1,050 mV.

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2010 Cadillac Truck SRX AWD V6-3.0L Page 2002

(DTC) Type Definitions)

Scan Tool Reference

Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information

Circuit/System Verification

1. Observe the DTC information with a scan tool. DTC P2177 or P2187 should not be set.

瀚慖f there are other DTCs set besides DTC P2177 or P2187 refer to Diagnostic Trouble Code (DTC) List - Vehicle (See: Diagnostic

Trouble Code Descriptions/Diagnostic Trouble Code (DTC) List - Vehicle) to diagnosis the applicable DTC.

2. Ignition ON, observe the BARO pressure parameter and compare the reading on the scan tool to the barometric pressure table. Refer to

Altitude Versus Barometric Pressure (See: Powertrain Management/Computers and Control Systems/Specifications/Altitude Versus

Barometric Pressure).

瀚慖f the BARO pressure is not within the range specified for your altitude, refer to DTC P2227, P2228, or P2229 (LAU) ( See: P Code

Charts/P2227).

3. Engine at normal operating temperature, observe the Average Total Fuel Trim parameter with a scan tool. The Average Total Fuel Trim

should be between -22 to +23 %.

瀚慖f not within the specified range, verify none of the following conditions exist:

* A mass air flow sensor signal that is skewed-If the Short Term Fuel Trim parameter changes greater than 20 % when the MAF sensor is

disconnected, refer to DTC P0101 (LAU) (See: P Code Charts/P0101)DTC P0101 (LF1) (See: P Code Charts/P0101).

* The air intake system after the MAF sensor for vacuum leaks

* Fuel contamination-Refer to Alcohol/Contaminants-in-Fuel Diagnosis (Special Tool) (See: Powertrain Management/Fuel Delivery and

Air Induction/Fuel/Testing and Inspection/Alcohol/Contaminants-in-Fuel Diagnosis (Special Tool))Alcohol/Contaminants-in-Fuel

Diagnosis (Without Special Tool) (See: Powertrain Management/Computers and Control Systems/Testing and Inspection/Component

Tests and General Diagnostics/Alcohol/Contaminants-in-Fuel Diagnosis (Without Special Tool)) and Fuel System Cleaning (See:

Powertrain Management/Fuel Delivery and Air Induction/Service and Repair).

* Splits, kinks, or improper connections at the vacuum hoses.

* The fuel system is operating lean. Refer to Fuel System Diagnosis (LF1 China) (See: Powertrain Management/Fuel Delivery and Air

Induction/Fuel Pump/Testing and Inspection/Fuel System Diagnosis (China))Fuel System Diagnosis (LF1 Except China) (See:

Powertrain Management/Fuel Delivery and Air Induction/Fuel Pump/Testing and Inspection/Fuel System Diagnosis (Except China))Fuel

System Diagnosis (LAU China) (See: Powertrain Management/Fuel Delivery and Air Induction/Fuel Pump/Testing and Inspection/Fuel

System Diagnosis (China))Fuel System Diagnosis (LAU Except China) (See: Powertrain Management/Fuel Delivery and Air

Induction/Fuel Pump/Testing and Inspection/Fuel System Diagnosis (Except China)).

* Vacuum leaks at the intake manifold or throttle body

* Leaking crankcase ventilation system

* The engine control module grounds for being clean, tight, and in the correct locations

* A high engine oil level condition-A high engine oil level causes oil residue to form on the mass air flow sensor, causing a lean indication.

The MAF sensor does not need to be replaced.

* Vacuum leaks that only affect one bank of the engine-For example, the intake manifold, the injector O-rings.

* Lean injectors-Refer to Fuel Injector Solenoid Coil Test (LAU) (See: Powertrain Management/Fuel Delivery and Air Induction/Fuel

Injector/Testing and Inspection)Fuel Injector Solenoid Coil Test (LF1, LFW) (See: Powertrain Management/Fuel Delivery and Air

Induction/Fuel Injector/Testing and Inspection).

* Missing, restricted, or leaking exhaust components-Refer to Symptoms - Engine Exhaust (See: Engine, Cooling and Exhaust/Exhaust

System/Testing and Inspection/Symptoms - Engine Exhaust).

* The heated oxygen sensor (HO2S) is installed securely and the electrical connector is not contacting the exhaust system.

* An engine mechanical condition-Refer to Symptoms - Engine Mechanical (See: Engine, Cooling and Exhaust/Engine/Testing and

Inspection/Symptom Related Diagnostic Procedures/Symptoms - Engine Mechanical).

4. Operate the vehicle within the Conditions for Running the DTC to verify the DTC does not reset. You may also operate the vehicle within the

conditions that you observed from the Freeze Frame/Failure Records data.

Repair Instructions

Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.

P2178

DTC P2178 or P2188

Diagnostic Instructions

* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System

Check - Vehicle) prior to using this diagnostic procedure.

* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an

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DTC B2375 01

- Left Seat Assembly Horizontal Position Sensor Circuit Short to Battery

DTC B2375 06

- Left Seat Assembly Horizontal Position Sensor Circuit Short to Ground or Open

DTC B2375 5A

- Left Seat Assembly Horizontal Position Sensor Circuit Plausibility Failure

Diagnostic Fault Information

Circuit/System Description

The position sensor that set this diagnostic trouble code (DTC) is either attached to the seat directional motor drive cable or directly to the motor it

monitors. It receives a 5 V reference and low reference from the memory seat module (MSM). The sensor sends a voltage signal that varies with the

movement of the seat through the signal circuit to the MSM. Then based on this voltage signal, the MSM determines the position of the seat.

Conditions for Running the DTC

The MSM must be powered.

Conditions for Setting the DTC

B1825 01, B1850 01, B2355 01, B2365 01, or B2375 01

If the MSM sees the analog input from this sensor is greater than 4.75 V, the sensor will be considered out of range and the MSM will set this DTC.

B1825 06, B1850 06, B2355 06, B2365 06, or B2375 06

If the MSM sees the analog input from this sensor is less than 0.22 V, the sensor will be considered out of range and the MSM will set this DTC.

B1825 5A, B1850 5A, B2355 5A, B2365 5A, or B2375 5A

This DTC will set, if the MSM is controlling a motor in one direction and its position sensor is tracking the motor in the opposite direction. The

sensor is either mounted or wired incorrectly, or the polarity of the motor control circuits are reversed.

Action Taken When the DTC Sets

The MSM disables the memory recall and easy exit/entry action commands of the motor monitored by the sensor. The motor will respond to

manual positioning commands.

Conditions for Clearing the DTC

* The current DTC will clear and set to history, when the MSM sees the analog input from the sensor as between 0.22 V and 4.75 V and the

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2010 Cadillac Truck SRX FWD V6-3.0L Page 183

* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System

Check - Vehicle) prior to using this diagnostic procedure.

* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an

overview of the diagnostic approach.

* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure

Instructions) provides an overview of each diagnostic category.

DTC Descriptors

DTC B0083 01

- Left Front Impact Sensor Short to Battery

DTC B0083 02

- Left Front Impact Sensor Short to Ground

DTC B0083 04

- Left Front Impact Sensor Open

DTC B0083 05

- Left Front Impact Sensor High/Voltage Open

DTC B0083 0C

- Left Front Impact Sensor Low Current

DTC B0083 39

- Left Front Impact Sensor Internal Electronic Failure

DTC B0083 3A

- Left Front Impact Sensor Incorrect Component Installed

DTC B0083 71

- Left Front Impact Sensor Invalid Serial Data Received

DTC B0084 01

- Right Front Impact Sensor Short to Battery

DTC B0084 02

- Right Front Impact Sensor Short to Ground

DTC B0084 04

- Right Front Impact Sensor Open

DTC B0084 05

- Right Front Impact Sensor High/Voltage Open

DTC B0084 0C

- Right Front Impact Sensor Low Current

DTC B0084 39

- Right Front Impact Sensor Internal Electronic Failure

DTC B0084 3A

- Right Front Impact Sensor Incorrect Component Installed

DTC B0084 71

- Right Front Impact Sensor Invalid Serial Data Received

DTC B0085 01

- Left Front Side Impact Sensor Short to Battery

DTC B0085 02

- Left Front Side Impact Sensor Short to Ground

DTC B0085 04

- Left Front Side Impact Sensor Open

DTC B0085 05

- Left Front Side Impact Sensor High/Voltage Open

2010 Mercedes Benz C 300 (204.054) V6-3.0L (272.947) Page 388

YES

The test was okay. End of test

NO

The test was not okay.Possible cause and remedy

- Y62y3 (Fuel injector cylinder 3)

End of test

2. No further information available.

3. Check power supply of component N3/10 (ME-SFI [ME] control unit).

Test 3.1: Test voltage supply of circuit 87. ( Check using actual value )

Test 3.2: Test voltage supply of circuit 30.

Test 3.3: Test voltage supply of circuit 87.

Test 3.4: Test current consumption of component N10/1kR (Circuit 87 relay, engine).

Test 3.5: Test voltage supply of circuit 15.

3.1. Test voltage supply of circuit 87. ( Check using actual value )

Test prerequisite

- The voltage test at component G1 (Battery) is o.k.

- Ignition ON

Status of relevant actual value:

- Battery voltage:Warning! Communication with ECU required.

Specified value

- Battery voltage[11.0 ... 15.0] V

Question:Is the actual value o.k.?

YES

The actual value is okay.End of test

NO

The actual value is not o.k.Possible cause and remedy

- Test voltage supply of circuit 30.

- Test voltage supply of circuit 87.

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2010 Cadillac CTS Sedan AWD V6-3.6L Page 7

B2652 - B3121

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2010 Cadillac Truck SRX AWD V6-3.0L Page 2182

瀚慖f the test lamp does not illuminate, test the circuit for an open/high resistance. If the circuits test normal, replace the BCM.

5. Ignition ON, verify that a test lamp illuminates between all B+ circuits and ground.

瀚慖f the test lamp does not illuminate, test the B+ circuit for a short to ground or an open/high resistance. If the circuit fuse is open, also test

the positive voltage outputs of the module for a short to ground. If the circuits test normal, replace the appropriate module.

6. Verify that a test lamp illuminates between all ignition voltage circuits and ground.

瀚慖f the test lamp does not illuminate, test the ignition voltage circuits for a short to ground or an open/high resistance. If the circuit fuse is

open, also test the positive voltage outputs of the module for a short to ground. If the circuits test normal, replace the appropriate module.

7. Test for less than 1 Ohms in the GMLAN serial data circuits between the non-communicating module and the module that displays the DTC.

瀚慖f greater than specified range, test the GMLAN serial data circuits for open/high resistance.

8. If all circuits test normal, replace the module that is not communicating.

Repair Instructions

Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.

* GMLAN Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic

Procedures/Wiring Repairs/GMLAN Wiring Repairs)

* Control Module References (See: Testing and Inspection/Programming and Relearning) for module replacement, setup, and programming

U2199

DTC U2105-U2199

Diagnostic Instructions

* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System

Check - Vehicle) prior to using the diagnostic procedure.

* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an

overview of the diagnostic approach.

* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure

Instructions) provides an overview of each diagnostic category.

Diagnostic Fault Information

Circuit/System Description

Modules connected to the high and low speed GMLAN serial data circuits monitor for serial data communications during normal vehicle operation.

Operating information and commands are exchanged among the modules. The modules have prerecorded information about what messages are

needed to be exchanged on the serial data circuits, for each virtual network. The messages are supervised and also, some periodic messages are

used by the receiver module as an availability indication of the transmitter module. Each message contains the identification number of the

transmitter module.

The body control module (BCM) activates the high speed GMLAN serial data wake up and the accessory wake up serial data circuits by applying

voltage when the ignition key is in ACC, ON or START. The high speed GMLAN serial data wake up circuit wakes up the electronic brake control

module (EBCM) for bus communication and the accessory wake up serial data circuit wakes up the engine control module (ECM) and transmission

control module (TCM).

Conditions for Running the DTC

* The system voltage is between 9-16 volts.

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Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.

* Driver or Passenger Seat Back Cushion Heater Replacement (KA1) (See: Body and Frame/Seats/Seat Temperature Element/Service and

Repair/Driver or Passenger Seat Back Cushion Heater Replacement (KA1))

* Driver Seat Cushion Heater Replacement (KA1) (See: Body and Frame/Seats/Service and Repair/Driver Seat Cushion Heater Replacement

(KA1))

* Passenger Seat Cushion Heater Replacement (KA1) (See: Body and Frame/Seats/Service and Repair/Passenger Seat Cushion Heater

Replacement (KA1))

* Control Module References (See: Testing and Inspection/Programming and Relearning) for MSM replacement, setup, and programming

B2509

DTC B2508 or B2509

Diagnostic Instructions

* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System

Check - Vehicle) prior to using this diagnostic procedure.

* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an

overview of the diagnostic approach.

* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure

Instructions) provides an overview of each diagnostic category.

DTC Descriptors

DTC B2508 01

- Seat Heater Relay Circuit Short to Battery

DTC B2508 02

- Seat Heater Relay Circuit Short to Ground

Diagnostic Fault Information

Circuit/System Description

The driver and passenger seat heating elements are controlled by a common high current relay internal to the memory seat module (MSM) and by

individual low side element control circuits. The MSM connects the heated seat heater element supply voltage circuits for both seats to a common

reference point. This reference point is biased to approximately 2.5 V. Before the MSM will allow heated seat operation, it checks to see if this

reference voltage is shorted to ground or voltage. Once the module verifies that it is not closing to a shorted heating element, it allows for heated

seat operation. The module will then continue to monitor the heating elements for a shorted circuit.

Conditions for Running the DTC

The MSM must be powered.

Conditions for Setting the DTC

2010 Mercedes Benz C 300 (204.054) V6-3.0L (272.947) Page 602

- 2Signal from component B6/7 (Right exhaust camshaft Hall sensor)

- 3Signal from component B6/4 (Left intake camshaft Hall sensor)

- 4Signal from component B6/6 (Left exhaust camshaft Hall sensor)

- 5Signal from component B70 (Crankshaft Hall sensor)

Test prerequisite

- Voltage supply is o.k.

Test sequence

- Switch off ignition.

- Connect socket box (126-pin) to component N3/10 (ME-SFI [ME] control unit).

- ConnectionMeasuring system

- Component B6/5 (Right intake camshaft Hall sensor):(A7) Observe oscilloscope pattern between sockets [M16] 16 and [M.57] 57 of the

126-pole socket box tester. (A.1)

- Component B6/7 (Right exhaust camshaft Hall sensor):(A7) Observe oscilloscope pattern between sockets [M16] 16 and [M.10] 10 of the

126-pole socket box tester. (A.2)

- Component B6/4 (Left intake camshaft Hall sensor):(A7) Observe oscilloscope pattern between sockets [M16] 16 and [M.56] 56 of the

126-pole socket box tester. (A.3)

- Component B6/6 (Left exhaust camshaft Hall sensor):(A7) Observe oscilloscope pattern between sockets [M16] 16 and [M.34] 34 of the

126-pole socket box tester. (A.4)

- Component B70 (Crankshaft Hall sensor):(A7) Observe oscilloscope pattern between sockets [M16] 16 and [M.81] 81 of the 126-pole socket

box tester. (A5)

- Start engine.

- Enter the settings as shown in the right-hand diagram.

Specified value

- Measuring system

Note

- Measuring system:Communication with ECU required

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2010 Cadillac Truck SRX FWD V6-3.0L Page 296

Scan Tool Reference

Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information

Circuit/System Verification

Ignition ON, observe the function of the low beam headlamps while commanding the Low Beam Lamps ON and OFF with a scan tool. The E4G

headlamp-left low beam and the E4H headlamp-right low beam should turn ON and OFF while changing between the commanded states.

If the E4G headlamp-left low beam is always OFF, refer to Left Low Beam Inoperative

If the E4H headlamp-right low beam is always OFF, refer to Right Low Beam Inoperative

If both low beam headlamps are always ON or always OFF, refer to Headlamps Malfunction

Circuit/System Testing

Left Low Beam Inoperative

1. Ignition OFF, disconnect the X118 inline harness connector at the E4G headlamp-left low beam.

2. Connect a test lamp between the control circuit terminal G and ground.

3. Ignition ON, command the Low Beam Lamps ON with a scan tool, the test should illuminate while commanding the headlamp ON.

瀚慖f the test lamp does not illuminate and the circuit fuse is good, test the control circuit for an open/high resistance.

瀚慖f the test lamp does not illuminate and the circuit fuse is open, test the control circuit for a short to ground.

4. If all circuits test normal, replace the E4G headlamp-left low beam.

Right Low Beam Inoperative

1. Ignition OFF, disconnect the X120 inline harness connector at the E4H headlamp-right low beam.

2. Connect a test lamp between the control circuit terminal G and ground.

3. Ignition ON, command the Low Beam Lamps ON with a scan tool, the test should illuminate while commanding the headlamp ON.

瀚慖f the test lamp does not illuminate and the circuit fuse is good, test the control circuit for an open/high resistance.

瀚慖f the test lamp does not illuminate and the circuit fuse is open, test the control circuit for a short to ground.

4. If all circuits test normal, replace the E4H headlamp-right low beam.

Headlamps Malfunction

1. Ignition OFF, disconnect the KR49 headlamp low beam relay.

2. Ignition ON, verify that a test lamp does not illuminate between the control circuit terminal 30 and ground.

瀚慖f the test lamp illuminates, test the control circuit for a short to voltage

3. Verify that a test lamp illuminates between the B+ circuit terminal 87 and ground.

瀚慖f the test lamp does not illuminate, test the B+ circuit for a short to ground or an open/high resistance.e

4. Verify that a test lamp illuminates between the B+ circuit terminal 86 and ground.

瀚慖f the test lamp does not illuminate, test the B+ circuit for an open/high resistance.

5. Connect a 15A fused jumper wire between the B+ circuit terminal 87 and the control circuit terminal 30. Verify the E4G headlamp-left low

beam and the E4H headlamp-right low beam are activated.

瀚慖f the E4G headlamp-left low beam and the E4H headlamp-right low beam do not activate, test the control circuit for a short to ground or

an open/high resistance.

6. Connect a test lamp between the B+ circuit terminal 86 and the control circuit terminal 85.

7. Ignition ON, command the Low Beam Lamps ON and OFF with a scan tool. The test lamp should turn ON and OFF when changing between

the commanded states.

瀚慖f the test lamp is always ON, test the control circuit for a short to ground. If the circuit tests normal, replace the K9 BCM.

瀚慖f the test lamp is always OFF, test the control circuit for a short to voltage or an open/high resistance. If the circuit tests normal, replace

the K9 BCM.

8. If all circuits test normal, test or replace the KR49 headlamp low beam relay.

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The ECM controls the heater by grounding the control circuit with a solid state device called a driver. The driver is equipped with a feedback

circuit that is pulled-up to voltage. The ECM can determine if the control circuit is open, shorted to ground, or shorted to a voltage by monitoring

the feedback voltage.

The HO2S utilizes the following circuits:

* A signal circuit

* A low reference circuit

* An ignition voltage circuit

* A heater control circuit

Conditions for Running the DTC

P0030, P0031, P0032, P0050, P0051, P0052

* The ignition voltage is between 10-18 volts.

* The engine speed is greater than 80 RPM, 240 RPM for LLT.

* The HO2S heater is commanded ON and OFF at least once during the ignition cycle.

* The HO2S heater is commanded ON-LLT only.

* The DTCs run continuously when the above conditions are met-5 seconds for LLT.

P0036, P0037, P0038, P0056, P0057, P0058

* The ignition voltage is between 10-18 volts.

* The engine speed is greater than 80 RPM.

* The HO2S heater is commanded ON and OFF at least once during the ignition cycle.

* The HO2S 2 is at operating temperature.

* The DTCs run continuously when the above conditions are met for greater than 500 mS.

Conditions for Setting the DTC

P0030, P0036, P0050, and P0056

The ECM detects an open in the heater circuits of the HO2S when the heater is commanded OFF. The condition exists for greater than 4 seconds or

a cumulative of 30 seconds.

P0031, P0037, P0051, and P0057

The ECM detects a short to ground in the heater circuits of the HO2S when the heater is commanded OFF. The condition exists for greater than 4

seconds or a cumulative of 30 seconds.

P0032, P0038, P0052, and P0058

The ECM detects a short to voltage in the heater circuits of the HO2S when the heater is commanded ON. The condition exists for greater than 4

seconds or a cumulative of 30 seconds.

Action Taken When the DTC Sets

DTCs P0030, P0031, P0032, P0036, P0037, P0038, P0050, P0051, P0052, P0056, P0057, and P0058 are Type B DTCs.

Conditions for Clearing the MIL/DTC

DTCs P0030, P0031, P0032, P0036, P0037, P0038, P0050, P0051, P0052, P0056, P0057, and P0058 are Type B DTCs.

Diagnostic Aids

* If the condition is intermittent, move the related harnesses and connectors, with the engine operating, while monitoring the scan tool Circuit

Test Status parameters for the component. The circuit status parameters change from OK or Not Run to Fault if there is a condition with the

circuit or a connection.

* An open fuse in the HO2S heater circuit may be caused by the heater element in one of the sensors. The condition may not be present until

the sensor operates for a period of time. If no fault is present in the heater circuit, monitor the amperage of each heater using the DMM to

determine if one of the heater elements is the cause of the open fuse. Inspect the sensor pigtail or the harness for contacting the exhaust

system.

Reference Information

Schematic Reference

Engine Controls Schematics (LLT) (See: Diagrams/Electrical Diagrams/Powertrain Management/System Diagram)Engine Controls Schematics

(LF1) (See: Diagrams/Electrical Diagrams/Powertrain Management/System Diagram)

Connector End View Reference

2021 MERCEDES BENZ CLS Specification & Presentation - Car and Driver mo...

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The engine control module (ECM) supplies voltage to the fuel pump control module when the ECM detects that the ignition is on. The voltage from

the ECM to the fuel pump control module remains active for 2 seconds, unless the engine is in crank or run. While this voltage is being received,

the fuel pump control module supplies a varying voltage to the fuel tank pump module in order to maintain the desired fuel rail pressure.

Conditions for Running the DTC

The engine is running.

Conditions for Setting the DTC

The fuel pump control module detects an over-temperature fault.

Action Taken When the DTC Sets

DTCs P064A and P1255 are Type A DTCs.

Conditions for Clearing the DTC

DTCs P064A and P1255 are Type A DTCs.

Diagnostic Aids

Using the Failure Records data may help locate an intermittent condition. If you cannot duplicate the DTC, the information in the Failure Records

can help determine how many miles since the DTC set. The Fail Counter and Pass Counter can help determine how many ignition cycles that the

diagnostic test reported a pass and/or a fail.

Reference Information

Schematic Reference

Engine Controls Schematics (LAU) (See: Diagrams/Electrical Diagrams/Powertrain Management/System Diagram)Engine Controls Schematics

(LF1) (See: Diagrams/Electrical Diagrams/Powertrain Management/System Diagram)

Connector End View Reference

Component Connector End Views (See: Diagrams/Connector Views/Connector End Views By Name)

Description and Operation

Fuel System Description (LF1) (See: Powertrain Management/Fuel Delivery and Air Induction/Description and Operation/Fuel System

Description)Fuel System Description (LAU or LY7) (See: Powertrain Management/Fuel Delivery and Air Induction/Description and

Operation/Fuel System Description)

Electrical Information Reference

* Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Circuit

Testing/Circuit Testing)

* Connector Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic

Procedures/Connector Repairs/Connector Repairs)

* Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component Tests and General Diagnostics/General

Electrical Diagnostic Procedures/Circuit Testing/Testing for Intermittent Conditions and Poor Connections)

* Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Wiring

Repairs/Wiring Repairs)

DTC Type Reference

Powertrain Diagnostic Trouble Code (DTC) Type Definitions (See: Diagnostic Trouble Code Descriptions/Powertrain Diagnostic Trouble Code

(DTC) Type Definitions)

Scan Tool Reference

Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information

Circuit/System Testing

1. Verify that DTC P0231, P0232 or P023F are not set.

瀚慖f any of those codes are set, refer to DTC P0231, P0232, or P023F (See: P Code Charts/P0231).

2. Ensure that the entire undercarriage of the vehicle is clean, especially around the area where the K27 fuel pump control module is located.

Clear all codes from the K27 fuel pump control module and test drive the vehicle. Verify that DTC P1255 or P064A do not set.

瀚慖f DTC P1255 or P064A reset, replace the K27 fuel pump control module.

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2010 Cadillac CTS Sedan AWD V6-3.6L Page 859

Circuit/System Verification

1. Ignition ON, observe the scan tool DTC information. Verify no other DTC is set.

瀚慖f any other DTC is set, refer to Diagnostic Trouble Code (DTC) List - Vehicle (See: Diagnostic Trouble Code Descriptions/Diagnostic

Trouble Code (DTC) List - Vehicle).

2. Engine idling, observe the appropriate scan tool HO2S voltage parameter. The voltage should fluctuate above and below the range of

401-519 mV.

3. Observe the DTC information with a scan tool. DTC P013A, P013C, P013E, and P014A should not set.

4. Operate the vehicle within the Conditions for Running the DTC to verify the DTC does not reset. You may also operate the vehicle within the

conditions that you observed from the Freeze Frame/Failure Records data.

Circuit/System Testing

1. Ignition OFF, disconnect the harness connector at the appropriate HO2S.

2. Ignition ON, verify that the scan tool HO2S voltage parameter is between 400-520 mV.

瀚慖f less than the specified range, test the signal circuit terminal B for a short to ground. If the circuit/connections test normal, replace the

ECM.

瀚慖f greater than the specified range, test the signal circuit terminal B for a short to voltage. If the circuit/connections test normal, replace

the ECM.

3. Connect a 3 A fused jumper wire between the signal circuit terminal B and ground. Verify the scan tool HO2S voltage parameter is less than

60 mV.

瀚慖f greater than the specified range, test the signal circuit for an open/high resistance. If the circuit/connections test normal, replace the

ECM.

4. Connect a 3 A fused jumper wire between the signal circuit terminal B and the low reference circuit terminal A. Verify the scan tool HO2S

voltage parameter is less than 60 mV.

瀚慖f greater than the specified range, test the low reference circuit for an open/high resistance or for a short to voltage. If the

circuit/connections test normal, replace the ECM.

5. Verify that none of the following conditions exist:

* Lean or rich condition.

* Water intrusion in the HO2S harness connector

* HO2S wiring harness damage

* Incorrect RTV sealant

* Low or high fuel system pressure-Refer to Fuel System Diagnosis (See: Powertrain Management/Computers and Control

Systems/Testing and Inspection/Component Tests and General Diagnostics/Fuel System Diagnosis).

* Fuel that is contaminated-Refer to Alcohol/Contaminants-in-Fuel Diagnosis (with Special Tool) (See: Powertrain

Management/Computers and Control Systems/Testing and Inspection/Component Tests and General

Diagnostics/Alcohol/Contaminants-in-Fuel Diagnosis (with Special Tool))Alcohol/Contaminants-in-Fuel Diagnosis (without Special

Tool) (See: Powertrain Management/Computers and Control Systems/Testing and Inspection/Component Tests and General

Diagnostics/Alcohol/Contaminants-in-Fuel Diagnosis (without Special Tool)).

* Fuel saturation of the evaporative emission (EVAP) canister

* Exhaust leaks near the HO2S

* Engine vacuum leaks

* Engine oil consumption

* Engine coolant consumption

瀚慖f you find any of the above conditions, repair as necessary.

6. If all conditions test normal, replace the appropriate HO2S.

Repair Instructions

Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.

* Heated Oxygen Sensor Replacement - Bank 1 Sensor 2 (LF1) (See: Powertrain Management/Computers and Control Systems/Oxygen

Sensor/Service and Repair)Heated Oxygen Sensor Replacement - Bank 1 Sensor 2 (LLT) (See: Powertrain Management/Computers and

Control Systems/Oxygen Sensor/Service and Repair)

* Heated Oxygen Sensor Replacement - Bank 2 Sensor 2 (LF1) (See: Powertrain Management/Computers and Control Systems/Oxygen

Sensor/Service and Repair)Heated Oxygen Sensor Replacement - Bank 2 Sensor 2 (LLT) (See: Powertrain Management/Computers and

Control Systems/Oxygen Sensor/Service and Repair)

* Control Module References (See: Testing and Inspection/Programming and Relearning) for engine control module replacement, setup, and

2010 Mercedes Benz C 300 (204.054) V6-3.0L (272.947) Page 35

1. Check power supply at control unit N118 (Fuel pump control module).

Possible cause and remedy

- N10/2f42 (Fuse 42)

-

Question

- Is fuse 128 OK?

YES

Test prerequisite

Test sequence

- Switch on ignition.

- Unplug 4-pin connector from component N118 (Fuel pump control module).

- Measure voltage at the unclipped cable.(Ground- Positive)

- Measure direct voltage with multimeter between sockets (N118) 1.2 and (N118) 1.1

Specified values

- Voltage: [11.0 ... 14.5] V

Question

- Is the measurement value OK?

YES

The measurement value is OK.Further possible causes of fault

2010 Cadillac Truck SRX AWD V6-3.0L Page 2026

2010 Cadillac Truck SRX AWD V6-3.0L Page 2026

Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.

Control Module References (See: Testing and Inspection/Programming and Relearning)for engine control module replacement, setup, and

programming

P2261

DTC P2261

Diagnostic Instructions

* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System

Check - Vehicle) prior to using this diagnostic procedure.

* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an

overview of the diagnostic approach.

* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure

Instructions) provides an overview of each diagnostic category.

DTC Descriptor

DTC P2261

- Turbocharger Bypass Valve Stuck

Circuit/System Description

The turbocharger incorporates a wastegate that is controlled by a pressure differential, that is determined by the engine control module (ECM) by

means of a pulse width modulation (PWM) solenoid valve , in order to regulate the pressure ratio. A charge air bypass valve is integrated within the

unit, and is also controlled by the ECM by utilizing a remotely mounted solenoid valve to prevent surging and damage from vibrations by opening

during abrupt closed throttle conditions. When the bypass valve is commanded open during closed throttle deceleration conditions, the bypass valve

allows the air to recirculate in the turbocharger and maintain speed. Within a calibrated range during the closed throttle event, or upon a wide open

throttle command, the bypass valve will then close to optimize turbocharger response.

The purpose of this diagnostic is to determine if the charge air bypass valve is stuck closed. The ECM will first verify the integrity of the following

sensors. The ECM then compares the actual measured mass air flow to a modeled airflow that is derived from these inputs:

* The throttle position

* The engine speed

* Intake Air (Boost) Pressure and Temperature Sensor

* Barometric Pressure (BARO)

Conditions for Running the DTC

* DTC P0101, P0111, P0112, P0113, or P0114 is not set.

* The boost pressure versus BARO ratio is between 1.1-3.2.

* The charge air bypass valve has been commanded ON for greater than 1 s immediately after an abrupt closed throttle has occurred and the

resulting pressure ratio across the turbo exceeds the calibrated pressure ratio limit.

* The engine is running.

* The ignition voltage is between 10-18 V.

* The ECM has commanded the bypass valve.

* The intake air temperature is greater than 15掳C (59掳F).

* The DTCs run continuously when the above conditions are met.

Conditions for Setting the DTC

The ECM detects that the bypass valve is stuck in the closed position. The ECM by comparing the measured MAF to the modeled MAF has

detected a series of pulsations in the induction system that exceed a calibrated threshold.

Action Taken When the DTC Sets

DTC P2261 is a Type B DTC.

Conditions for Clearing the DTC

DTC P2261 is a Type B DTC.

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2010 Cadillac CTS Sedan AWD V6-3.6L Page 357

B1340 42

This DTC will set if the module calibration is not programmed.

B1340 4B

This DTC will set if the module calibration is not learned.

Action Taken When the DTC Sets

All movement related to the steering column motors are aborted.

Conditions for Clearing the DTC

* The current DTC will clear and set the code to history, 3 seconds after no motor movement is requested or the current is no longer

mismatched, and the power mode changes to OFF then back to ACC or RUN.

* The history DTC will clear after 50 consecutive fault-free ignition cycles have occurred.

Diagnostic Aids

The scan tool may reference the Memory Seat Module (MSM) as the Driver Position Module.

Reference Information

Schematic Reference

* Driver Seat Schematics (See: Body and Frame/Seats/Diagrams/Electrical Diagrams/Driver Seat Schematics)

* Tilt/Telescoping Steering Column Schematics (See: Diagrams/Electrical Diagrams/Steering/Steering Column/Tilt/Telescoping Steering

Column Schematics)

Connector End View Reference

Component Connector End Views (See: Diagrams/Connector Views)

Description and Operation

Memory Seats Description and Operation (See: Body and Frame/Seats/Description and Operation/Memory Seats)

Electrical Information Reference

* Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics/Circuit Testing/Circuit Testing)

* Connector Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/Connector Repairs/Connector Repairs)

* Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component Tests and General Diagnostics/Circuit

Testing/Testing for Intermittent Conditions and Poor Connections)

* Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/Wiring Repairs/Wiring Repairs)

Scan Tool Reference

Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information

Circuit/System Testing

B1340 0B

1. Ignition ON, use a scan tool to clear the current and history diagnostic trouble code.

2. Determine which motor set this DTC by operating the motors listed below one at a time in both directions. Check for the DTC to set between

each motor test.

* Steering Column Tilt motor

* Steering Column Telescope motor

3. Clear the diagnostic trouble codes.

4. Ignition OFF, disconnect the harness connector at the appropriate steering column motor for which the DTC set.

5. Ignition ON, operate the motor adjuster switch in both directions. DTC B1340 0B should not set.

瀚慖f the DTC sets, test for a short between the appropriate motor control circuits listed below. If the circuits test normal, replace the MSM.

* Steering column telescope motor terminal C and terminal D

* Steering column tilt motor terminal A and terminal B

6. Test the appropriate control circuits listed below for a high resistance. If the circuits test normal, test or replace the steering column.

* Steering column telescope motor terminal C and terminal D

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2010 Cadillac Truck SRX AWD V6-3.0L Page 1951

Repair Instructions

Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the repair.

* Throttle Body Assembly Replacement (LF1) (See: Powertrain Management/Fuel Delivery and Air Induction/Throttle Body/Service and

Repair/Removal and Replacement)Throttle Body Assembly Replacement (LAU) (See: Powertrain Management/Fuel Delivery and Air

Induction/Throttle Body/Service and Repair/Removal and Replacement)

* Control Module References (See: Testing and Inspection/Programming and Relearning) for ECM replacement, programming, and setup

P2122

DTC P2122, P2123, P2127, P2128, or P2138 (LF1)

Diagnostic Instructions

* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System

Check - Vehicle) prior to using this diagnostic procedure.

* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an

overview of the diagnostic approach.

* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure

Instructions) provides an overview of each diagnostic category.

DTC Descriptors

DTC P2122

- Accelerator Pedal Position (APP) Sensor 1 Circuit Low Voltage

DTC P2123

- Accelerator Pedal Position (APP) Sensor 1 Circuit High Voltage

DTC P2127

- Accelerator Pedal Position (APP) Sensor 2 Circuit Low Voltage

DTC P2128

- Accelerator Pedal Position (APP) Sensor 2 Circuit High Voltage

DTC P2138

- Accelerator Pedal Position (APP) Sensor 1-2 Correlation

Diagnostic Fault Information

Typical Scan Tool Data

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2010 Cadillac CTS Sedan AWD V6-3.6L Page 366

Scan Tool Reference

Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information

Circuit/System Verification

1. Verify that the following DTCs are not set: U1814, B1428.

瀚慖f either of the DTCs are set, refer to Diagnostic Trouble Code (DTC) List - Vehicle (See: Diagnostic Trouble Code

Descriptions/Diagnostic Trouble Code (DTC) List - Vehicle).

2. With a scan tool, access BCM, Power Mode data display list and compare all parameters listed with the corresponding ignition key position.

The PMM Power Mode Parameters table below illustrates the correct state of these input parameters in correspondence to the ignition switch

position. The circuits which the individual parameters are related to are in parentheses.

Circuit/System Testing

Important: You must perform the Circuit/System Verification before proceeding with Circuit/System Testing.

1. Connect a test lamp between each fuse test terminal of the ignition switch B+ circuit fuse and ground. The test lamp should illuminate.

瀚慖f the test lamp does not illuminate, test the circuits listed below for a short to ground. If all circuits test OK, replace the BCM.

* B+ terminal 2

* Ignition terminal 1

* Ignition terminal 3

* Ignition terminal 4

* Ignition, BCM terminal 19, X4

* Ignition, BCM terminal 21, X4

2. Disconnect the harness connector at the ignition switch.

3. Connect a test lamp between the B+ circuit terminal 2 and ground. The test lamp should illuminate.

瀚慖f the test lamp does not illuminate, test the B+ circuit for an open/high resistance.

Important: The ignition switch component test must be performed before proceeding with this test to verify the integrity of the

switch.

4. Perform the ignition switch component test. Verify the switch passes the test.

瀚慖f the ignition switch does not test normal, replace the ignition switch.

5. Disconnect the X1 harness connector at the BCM, test for less than 1.0 V between the circuit terminals of the BCM listed below and ground:

* Ignition terminal 4

* Ignition terminal 21

* Ignition terminal 21, X4

瀚慖f greater than specified, test the circuit for a short to voltage.

6. Test for less than 1.0 Ohms between the BCM and the ignition switch on the circuits listed below:

* Ignition terminal 2, X1 and ignition switch terminal 4

* Ignition terminal 21, X1 and ignition switch terminal 3

* Ignition terminal 21, X4 and ignition switch terminal 1

瀚慖f greater than specified, test the circuit for open/high resistance

2010 Cadillac Truck SRX FWD V6-3.0L Page 79

2010 Cadillac Truck SRX FWD V6-3.0L Page 79

- SDM wiring harness connector

- Roof rail air bag wiring harness connector

- Seat side air bag wiring harness connector

- Passenger instrument panel air bag wiring harness connector

- Seat belt retractor pretensioner wiring harness connector

* The connector and connector position assurance (CPA) may seat independent of each other. Both the connector and CPA should seat with an

audible and/or tactile click. The CPA isolates the shorting-bars within the connector allowing the deployment circuit to operate properly.

* If the condition is intermittent or cannot be duplicated, disconnect the connectors and add Nyogel lubricant 760G. This procedure will correct

the high resistance condition due to terminal fretting corrosion.

Observe the scan tool Deployment Loop Resistance parameters while moving the harness near each connector listed below. The reading should stay

consistently between 1.7 and 4.2 ohm without any drop outs or spikes.

* F105 Passenger instrument panel air bag, and Roof rail air bag

* F106 Seat side air bag

* F112 Seat belt retractor pretensioner

* Any inline harness

* K36 SDM

If the reading is erratic while moving the harness, perform the following:

* Inspect each connector terminal for damage or corrosion and repair as necessary.

* Apply Nyogel lubricant 760G to each connector terminal.

* Insure each connector and CPA is correctly seated.

Circuit/System Testing

DTC B0014-B0018 or B0021-B0045

1. Ignition OFF, disconnect the harness connector at the appropriate F105, F106 air bag or F112 seat belt retractor pretensioner.

2. Ignition OFF, disconnect the scan tool, wait 120 seconds, test for greater than 25 ohm between the control circuit terminals listed below:

* F105 Left roof rail airbag terminal 1 and 2

* F105 Right roof rail airbag terminal 1 and 2

* F106 Driver seat side airbag terminal 1 and 2

* F106 Passenger seat side airbag terminal 1 and 2

* F112 Driver seat belt retractor pretensioner terminal 1 and 2

* F112 Passenger seat belt retractor pretensioner terminal 1 and 2

瀚慖f less than the specified range, test for a short between the control circuits, check each connector and CPA to ensure that the shorting

bars are lifted. If the circuits and shorting bars tests normal, replace the K36 SDM.

3. Ignition ON, test for less than 11 V between the control circuit terminals listed below and ground:

* F105 roof rail air bag or F106 seat side air bag control circuit terminal 1

* F105 roof rail air bag or F106 seat side air bag control circuit terminal 2

* F112 seat belt retractor pretensioner control circuit terminal 1

* F112 seat belt retractor pretensioner control circuit terminal 2

瀚慖f greater than the specified range, test the control circuit for a short to voltage. If the circuit tests normal, replace the K36 SDM.

4. Ignition OFF, test for greater than 25 ohm between the control circuit terminals listed below and ground:

* F105 roof rail air bag or F106 seat side air bag control circuit terminal 1

* F105 roof rail air bag or F106 seat side air bag control circuit terminal 2

* F112 seat belt retractor pretensioner control circuit terminal 1

* F112 seat belt retractor pretensioner control circuit terminal 2

瀚慖f less than the specified range, test the control circuit for a short to ground. If the circuit tests normal, replace the K36 SDM.

5. Install a 3 A fused jumper wire between the control circuit terminals listed below:

* F105 Left roof rail air bag terminal 1 and 2

* F105 Right roof rail air bag terminal 1 and 2

* F106 Driver seat side air bag terminal 1 and 2

* F106 Passenger seat side air bag terminal 1 and 2

* F112 Driver seat belt retractor pretensioner terminal 1 and 2

* F112 Passenger seat belt retractor pretensioner terminal 1 and 2

6. Verify the scan tool Deployment Loop Resistance parameter is less than 2 ohm.

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2010 Mercedes Benz C 300 (204.054) V6-3.0L (272.947) Page 979

Move on to actuation with button F2

2.3. Check internal resistance of component M16/6m1 (Actuator motor).

Figure legend

- A -ConnectionTest cable 35-pin socket box

- 001 -Sockets of component N3/10 (ME-SFI [ME] control unit)

- 05 -35-pin socket box

- 050 -126-pin socket box

- 108 -Test cable 266 589 01 63 00

- N3/10 (ME-SFI [ME] control unit)

- II 1-63ConnectionTest cable

- III 64-126ConnectionTest cable

Warning!

- Connection A of test cable 108 may NOT be connected to connection B of the 126-pin socket box (050).

Continue to test with button F2

Test sequence

- Switch off ignition.

- Disconnect coupling M at component N3/10 (ME-SFI [ME] control unit).

- Measure resistance with multimeter between sockets (M.75) 75 and (M.74) 74 of the 126-pole socket box tester.

Specified value

- Resistor[1...10]ohms

Question

- Is the measurement value OK?

YES

The measurement value is OK.End of test

NO

The measurement value is not OK.Possible cause and remedy

- Lines between N3/10 (ME-SFI [ME] control unit) and M16/6m1 (Actuator motor)

- M16/6m1 (Actuator motor)

End of test

2.4. Check internal resistance of component M16/6 (Throttle valve actuator).