Diagnostic Test
- VERIFY DTC IS ACTIVE NOTE:
Verify the IOD fuse is installed and battery voltage is between 10 and 16 volts before proceeding.
NOTE:If present, diagnose and repair DTC U0002-CAN C BUS OFF PERFORMANCE, DTC or DTC U1502-IMPLAUSIBLE MESSAGE DATA LENGTH RECEIVED FROM TIPM before diagnosing this DTC.
- Turn the ignition on.
- With the scan tool, read and record the ABS DTCs.
- With the scan tool, read and record Environmental Data (EV Data).
- With the scan tool, erase the ABS DTCs.
- Cycle the ignition switch.
- With the scan tool, read the ABS DTCs.
Does this DTC reset?
Yes
- Go To 2
No
- Perform the Stored Lost Communication test procedure. Refer to STORED LOST COMMUNICATION DTCS .
- CHECK FOR ANY OF THE FOLLOWING ACTIVE DTCs
- With the scan tool, read all active DTCs from all CAN C Bus modules.NOTE:
Check for CAN C hardware electrical, VIN Missing/Mismatch, battery or ignition related DTCs.
Does the scan tool display any active DTCs related to the conditions listed above?
Yes
- Diagnose and repair the DTC(s). Refer to DIAGNOSTIC CODE INDEX .
No
- Go To 3
- With the scan tool, read all active DTCs from all CAN C Bus modules.
- VERIFY THAT THE TCM IS ACTIVE ON THE BUS
- With the scan tool, select ECU View.
- Verify that the TCM is active on the bus.
Is the TCM active on the bus?
Yes
- Go To 4
No
- For a no response test procedure. Refer to DIAGNOSIS AND TESTING .
- CHECK FOR ADDITIONAL COMMUNICATION RELATED DTCs
- With the scan tool, select Network View and select Advanced.
Is there more than one module with active DTCs "Logged Against" the TCM?
Yes
- Replace/update the TCM in accordance with the service information.
- Perform the TCM VERIFICATION TEST. Refer to 6F24 TRANSMISSION VERIFICATION TEST or CVT VERIFICATION TEST .
No
- Replace the Anti-Lock Brakes Module in accordance with the service information.
- Perform the ABS VERIFICATION TEST. Refer to ABS VERIFICATION TEST .
- With the scan tool, select Network View and select Advanced.