Diagnostic Routine AA

Diagnostic Routine AA

Diagnostic Overview

U0101:00

Normal Operation and Fault Conditions

With the ignition ON, the TCM (Transmission Control Module) sends messages to the ABS (Anti-Lock Brake System) module over the HS-CAN (High Speed Controller Area Network). If the ABS (Anti-Lock Brake System) module does not receive these messages within a certain time frame (less than 1 second), 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 by the TCM (Transmission 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 TCM (Transmission Control Module) 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. Using a scan tool, carry out the ABS (Anti-Lock Brake System) module self-test.

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

Is DTC (Diagnostic Trouble Code) U0101:00 retrieved again?






3. RETRIEVE 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 recorded?






4. RETRIEVE THE RECORDED DTCs (Diagnostic Trouble Codes) FROM THE TCM (Transmission Control Module) SELF-TEST

1. Using a scan tool, carry out the TCM (Transmission Control Module) self-test.

Is DTC (Diagnostic Trouble Code) P0702, P0882, P0883 or P1397 present?






5. CHECK FOR DTC (Diagnostic Trouble Code) U0101:00 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) U0101:00 set in the BCM (Body Control Module) or in the IPC (Instrument Panel Cluster)?