2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 2031

Testing the Serial Data Circuits for a Open/High Resistance

1. Ignition OFF, disconnect the harness connectors with the mid speed or chassis high speed serial data circuits at an easily accessible control

module, that is not communicating.

2. Ignition OFF for 60 seconds, test for greater than 130 ohm between each pair of serial data circuits. Verify that one pair of serial data circuits

are greater than 130 ohm.

瀚慖f less than the specified range for each pair of serial data circuits, replace the control module that was disconnected.

3. Connect the harness connectors at the control module that was disconnected.

4. Disconnect the harness connectors with the mid speed or chassis high speed serial data circuits at another control module, in the direction of

the open circuit.

5. Ignition OFF for 60 seconds, test for greater than 130 ohm between each pair of serial data circuits. Verify that one pair of serial data circuits

are greater than 130 ohm.

6. Repeat step 3 until one of the following conditions are isolated:

* An open/high resistance on the serial data circuit between 2 control modules

* An open/high resistance on the serial data circuit between a control module and a terminating resistor

* An open/high resistance terminating resistor

Testing the Ignition Circuit

1. Ignition OFF, disconnect the harness connectors with the ignition circuits at an easily accessible control module that is not communicating.

2. Ignition OFF, verify that a test lamp does not illuminate between each ignition circuit terminal and ground, at the control module connector

that was just disconnected.

瀚慖f the test lamp does illuminate, test the ignition circuit for a short to voltage. If the circuits test normal, replace the control module that

was just disconnected.

3. Ignition ON, verify that a test lamp illuminates between each ignition circuit terminal and ground.

瀚慖f the circuits test normal, replace the control module that was just disconnected.

4. Connect the harness connectors at the control module that was just disconnected.

5. Repeat step 1 at another control module until a short to voltage, a short to ground, or an open/high resistance is found on the ignition circuits.

Repair Instructions

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

* 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 control module replacement, programming and

setup

U0100

DTC U0100-U02FF

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

Refer to Control Module U Code List (See: Diagnostic Trouble Code Descriptions/Control Module U Code List).

Diagnostic Fault Information

P179D The redundancy system for DIRECT SELECT was activated. There is a signal above the permissible limit value.

P179D The redundancy system for DIRECT SELECT was activated. There is a signal above the permissible limit value.2010 Mercedes Benz E 63 AMG Sedan (212.077) V86.3L (156.985) Copyright ? 2013, ALLDATA 10.52SS Page 978 Possible cause: A80 (Intelligent servo module for DIRECT SELECT) Affected functions: Drive position selection Test 1: Remedial action if control unit is faulty 'A80 (Intelligent servo module for DIRECT SELECT)' 1. Remedial action if control unit is faulty 'A80 (Intelligent servo module for DIRECT SELECT)' Operation number of operation texts and work units or standard texts and flat rates:270641Possible cause and remedy Internal fault in control unit Replace component A80 (Intelligent servo module for DIRECT SELECT). Additional measures Perform initial startup. Continue with button "F2" Initial startup The following procedure will guide you through all steps requ...

Dremel 4300-9/64 Versatile Corded Rotary Tool Kit with Flex Shaft and Hard Storage Case, High Power & Performance, Variable Speed- Engraver, Etcher, Sander, and Polisher, Ultimate Gift for the DIYER

The Dremel 4300-9/64 is a versatile corded rotary tool kit designed for a wide range of applications, making it an excellent choice for DIY enthusiasts and professionals alike. Here’s an overview of its key features: ### Key Features 1. **Power and Performance**: - **High Power Motor**: The 4300 features a powerful motor that provides efficient performance for various tasks, including engraving, etching, sanding, and polishing. 2. **Variable Speed**: - **Adjustable RPM**: Offers a variable speed range (typically 5,000 to 35,000 RPM) for precise control, allowing you to match the speed to the material and task at hand. 3. **Flex Shaft Attachment**: - **Enhanced Maneuverability**: The included flex shaft allows for more intricate work in tight spaces and provides a comfortable grip for detailed projects. 4. **Comprehensive Accessory Kit**: - **Versatile Attachments**: Comes with a variety of attachments and accessories, including ...

D138， Diagnostic Trouble Codes ( DTC ): Manufacturer Code Charts

D138 The message from the auxiliary oil pump is not available on the CAN bus. Possible cause: M42 (Electric transmission oil pump) / N89 (Transmission oil additional pump control unit) Affected functions: Engine start ------------------------------------------------- Test 1: Check component M42 (Electric transmission oil pump). Check component M42 (Electric transmission oil pump). Operation number of operation texts and work units or standard texts and flat rates:27-0641Test prerequisite Battery voltage is OK. Test sequence Switch off ignition. Disconnect connector at component N89 (Transmission oil additional pump control unit). Use multimeter to check voltage directly at jacks of wiring harness for component N89 (Transmission oil additional pump control unit). Switch on ignition. Measure direct voltage with multimeter between 1 and 4Specified value - Voltage [8,5...16,4] V Question Is the measurement value OK?...

Mercedes Benz

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