Antilock Brake Module (ABS)

U0402-IMPLAUSIBLE DATA RECEIVED FROM TCM

For a complete wiring diagram, refer to the Wiring Information Electrical Diagrams.

- When Monitored:
Continuously with the ignition on, one valid CAN message received at least once, and no U0002-CAN C Bus Off Performance DTC present.

- Set Condition:
When the Anti-Lock Brake Module detects an incorrect CAN message from the Transmission Control Module (TCM).





1. CHECK IF FCM CAN BUS DTCS ARE PRESENT
1. With the scan tool, read FCM DTCs.

Are there any FCM CAN BUS DTCs present?

Yes

- Diagnose the appropriate symptom Testing and Inspection.

No

- Go To 2

2. CHECK IF TRANSMISSION DTCS ARE PRESENT
1. With the scan tool, read Transmission DTCs.

Are there any Transmission DTCs present?

Yes

- Diagnose the appropriate symptom Testing and Inspection.

No

- Using the schematics as a guide, check the Anti-Lock Brake Module pins, terminals, and connectors for corrosion, damage, or terminal push out. Pay particular attention to all power and ground circuits. If no problems are found, replace the Anti-Lock Brake Module.
- Perform ABS VERIFICATION TEST ABS Verification Test.