Antilock Brakes / Traction Control Systems

Diagnostic Routine S

Diagnostic Overview

U0131:00

Refer to Wiring Diagram Set 42 for schematic and connector information Electrical Diagrams.

Normal Operation and Fault Conditions

On vehicles equipped with active park assist, with the ignition ON, the SCCM (Steering Column Control Module) sends messages to the ABS (Anti-Lock Brake System) module over the HS-CAN (High Speed Controller Area Network).

On vehicles not equipped with active park assist, with the ignition ON, the PSCM (Power Steering Control Module) sends messages to the ABS (Anti-Lock Brake System) module over the HS-CAN (High Speed Controller Area Network).

If these messages are missing for 5 seconds, the ABS (Anti-Lock Brake System) module sets DTCs (Diagnostic Trouble Codes).

For information on the messages sent to the ABS (Anti-Lock Brake System) module from the PSCM (Power Steering Control Module) and SCCM (Steering Column Control Module), REFER to Network Message Chart .

DTC Fault Trigger Conditions






Pinpoint Test

1. CHECK THE COMMUNICATION NETWORK

1. Ignition ON.

2. Using a scan tool, carry out the network test.

Does the PSCM (Power Steering Control Module) (vehicles without active park assist) or SCCM (Steering Column Control Module) (vehicles with active park assist) pass the network test?






2. CHECK THE ABS (Anti-Lock Brake System) CMDTCs (Continuous Memory Diagnostic Trouble Codes)

1. Ignition ON.

2. Using a scan tool, carry out the ABS (Anti-Lock Brake System) module self-test.

3. Clear the DTCs (Diagnostic Trouble Codes).

4. Ignition OFF.

5. Ignition ON.

6. Repeat the ABS (Anti-Lock Brake System) module self-test.

7. Record the ABS (Anti-Lock Brake System) module DTCs (Diagnostic Trouble Codes).

Is DTC (Diagnostic Trouble Code) U0131:00 retrieved again?






3. REVIEW THE RECORDED DTCs (Diagnostic Trouble Codes) FROM THE ABS (Anti-Lock Brake System) SELF-TEST

1. Check the recorded DTCs (Diagnostic Trouble Codes) from the ABS (Anti-Lock Brake System) self-test.

Is DTC (Diagnostic Trouble Code) U3003:16 or U3003:17 present?






4. CHECK FOR DTCs (Diagnostic Trouble Codes) FROM THE PSCM (Power Steering Control Module)

1. Using a scan tool, carry out the PSCM (Power Steering Control Module) self-test.

Is DTC (Diagnostic Trouble Code) U3003:16 or 17 present?






5. CHECK FOR DTCs (Diagnostic Trouble Codes) FROM THE SCCM (Steering Column Control Module)

1. Using a scan tool, carry out the SCCM (Steering Column Control Module) self-test.

Is DTC (Diagnostic Trouble Code) C0051:16 or 17 present?






6. CHECK FOR DTC (Diagnostic Trouble Code) U0131:00 SET IN OTHER MODULES

1. Ignition ON.

2. Using a scan tool, carry out the self-test for all modules.

3. Retrieve the CMDTCs (Continuous Memory Diagnostic Trouble Codes) from all modules.

Is DTC (Diagnostic Trouble Code) U0131:00 set in any other modules?