4000 - 4999: 4750

4750-IMPLAUSIBLE CAN MESSAGE 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.

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





1. CHECK FOR DTC 4750-IMPLAUSIBLE CAN MESSAGE RECEIVED FROM TCM

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

1. Turn the ignition on.
2. With the scan tool, record and erase DTCs.
3. Cycle the ignition switch from off to on.
4. With the scan tool, read DTCs.

Does the scan tool display: 4750-IMPLAUSIBLE CAN MESSAGE RECEIVED FROM TCM?

Yes

- Go To 2

No

- Perform the ABS-INTERMITTENT CONDITION TEST. Testing and Inspection.

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

Are there any BCM CAN BUS DTCs present?

Yes

- Perform the appropriate diagnostic procedure.Testing and Inspection

No

- Go To 3

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

Are there any Transmission DTCs present?

Yes

- Perform the appropriate diagnostic procedure.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 the ABS VERIFICATION TEST. Verification Tests.