7000 - 7999: 7207

7207-IMPLAUSIBLE MESSAGE RECEIVED FROM ECM/PCM

For a complete wiring diagram consult Diagrams/Electrical Electrical Diagrams


- When Monitored:

Continuously with the ignition on, one valid CAN message received at least once.

- Set Condition:

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








Diagnostic Test


1. CHECK FOR DTC 7207-IMPLAUSIBLE MESSAGE RECEIVED FROM ECM/PCM

NOTE: This DTC must be active for the results of this test to be valid.

Turn the ignition on.

With the scan tool, record and erase DTCs.

Cycle the ignition switch from off to on.

With the scan tool, read DTCs.

Does the scan tool display: 7207-IMPLAUSIBLE MESSAGE RECEIVED FROM ECM/PCM?

Yes

- Go To 2

No

- Refer to the ABS INTERMITTENT CONDITION TEST.


Diagnostic Test


2. CHECK IF BCM CAN BUS DTCS ARE PRESENT

With the scan tool, read BCM DTCs.

Are there any BCM CAN BUS DTCs present?

Yes

- Diagnose and repair the DTC(s).
- Perform ABS VERIFICATION TEST. Verification Tests

No

- Go To 3



3. CHECK IF ENGINE DTCS ARE PRESENT

With the scan tool, read Engine DTCs.

Are there any Engine DTCs present?

Yes

- Refer to Computers and Control Systems and diagnose the appropriate symptom.
- Perform ABS VERIFICATION TEST. Verification Tests

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. Verification Tests