U1501

U1501-IMPLAUSIBLE MESSAGE DATA LENGTH RECEIVED FROM PCM

For a complete wiring diagram, refer to Diagrams/Electrical. Electrical Diagrams

- When Monitored:

Continuously with the ignition on.

- Set Condition:

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





Diagnostic Test

1. CHECK IF FCM CAN BUS DTCs ARE PRESENT

With the scan tool, read FCM DTCs.

Are there any FCM CAN BUS DTCs present?

Yes

- Refer to applicable DTC test and diagnose the appropriate symptom.
- Perform ABS VERIFICATION TEST. ABS Verification Test

No

- Go To 2

2. CHECK IF ENGINE DTCS ARE PRESENT

With the scan tool, read Engine DTCs.

Are there any Engine DTCs present?

Yes

- Refer to applicable DTC test and diagnose the appropriate symptom.
- Perform ABS VERIFICATION TEST. ABS Verification Test

No

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