2010 Cadillac Truck SRX FWD V6-3.0L Page 1639

2010 Cadillac Truck SRX FWD V6-3.0L Page 1639

* B47B fuel rail pressure (FRP) sensor

* B1 A/C refrigerant pressure sensor

* All four B23 camshaft position sensors

P0651

The 5 V reference 2 circuit provides 5 V to the B26 crankshaft position sensor.

P0697

The 5 V reference 3 circuit provides 5 V to the following sensors:

* B74 manifold absolute pressure (MAP) sensor

* B107 accelerator pedal position sensor 2

P06A3

The 5 V reference 4 circuit provides 5 V to the following sensors:

* B106 throttle position sensor

* B107 accelerator pedal position sensor 1

瀚慖f the condition is intermittent, move the related harnesses and connectors with the engine operating. Monitor the scan tool 5 V Reference

Circuit Test Status parameters for the affected components. The Circuit Test Status parameter will change from OK or Not Run to Fault if

there is a condition with the circuit or a connection.

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)

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. Ignition ON, observe the DTC information with a scan tool. DTC P0641, P0651, P0697, or P06A3 should not set.

2. Observe the appropriate scan tool 5 V Reference Circuit Test Status parameter. The parameter should display OK or Not Run.

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.

Circuit/System Testing

Note: Additional DTCs will set when disconnecting the components.

1. Ignition OFF, disconnect the harness connector of all appropriate sensors for the applicable DTC. Refer to Diagnostic Aids.

2. Ignition ON, test for 4.8-5.2 V between each of the affected 5 V reference circuits and ground.

瀚慖f the voltage is less than the specified range, test for a short to ground or for an open between the ECM and the affected circuit splice. If

the circuit tests normal, replace the K20 ECM.

瀚慖f the voltage is greater than the specified range, test for a short to voltage on the 5 V reference circuit. If the circuit tests normal, replace