U1501

U1501-IMPLAUSIBLE MESSAGE DATA LENGTH RECEIVED FROM PCM

For a complete wiring diagram Refer to the Wiring Information.

- When Monitored:
Continuously with the ignition on.

- Set Condition:
When the Anti-Lock Brake Module detects an incorrect CAN message from the Engine Module.





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 and repair the DTC(s) Testing and Inspection.

No

- Go To 2

2. CHECK IF ENGINE DTCS ARE PRESENT
1. With the scan tool, read Engine DTCs.

Are there any Engine DTCs present?

Yes

- Diagnose and repair the DTC(s) Testing and Inspection.

No

- Replace the Anti-Lock Brake Module.
- Perform ABS VERIFICATION TEST ABS Verification Test.