1875-01

1875-01 CAN BUS CIRCUIT FAULTY











Diagnostic Test


1. CHECK FOR CAN DTCS IN OTHER MODULES





Turn the ignition on.

With the DRB III(R), read the stored and active DTCs for all modules on the CAN C BUS.

Are other modules reporting CAN BUS DTCs?

Yes

- Refer to the reporting category and perform the appropriate symptom. If the PCM is reporting a CAN BUS failure, refer to the PCM tests first.

No

Go To2



2. CAN C BUS (+) AND/OR CAN C BUS (-) CIRCUIT OPEN





Turn the ignition off.

Disconnect the PCM C4 harness connector.

Disconnect the SLA harness connector.


NOTE: Check connectors - Clean/repair as necessary.

Measure the resistance of both the CAN C BUS (+) circuit and the CAN C BUS (-) circuit from the PCM C4 harness connector to the SLA harness connector.

Is the resistance of both CAN C BUS circuits below 5.0 ohms?

Yes

- Replace the Shift Lever Assembly.
- Perform NAG1 TRANSMISSION VERIFICATION TEST. Transmission Verification Test

No

- Repair the faulty CAN C BUS circuit for an open.
- Perform NAG1 TRANSMISSION VERIFICATION TEST. Transmission Verification Test