Diagnostic Test
- VERIFY THE DIAGNOSTIC TROUBLE CODE (DTC) IS ACTIVE NOTE:
Make sure the IOD fuse is installed and battery voltage is between 10 and 16 volts before proceeding.
NOTE:Check for any Technical Service Bulletins (TSBs) related to the condition. If a TSB applies, perform the procedure outlined in the TSB before continuing.
- With the scan tool, read active DTCs.
Is this DTC active?
Yes
- Go To 2.
No
- Refer to DIAGNOSIS AND TESTING and perform the Stored Lost Communication DTCs diagnostic procedure.
- With the scan tool, read active DTCs.
- CHECK FOR ANY OF THE FOLLOWING ACTIVE DTCS
- With the scan tool, read active DTCs from all modules.NOTE:
Check for CAN B or C hardware electrical, VIN Missing/Mismatch, battery or ignition related DTCs.
Does the scan tool display any active DTCs to the conditions listed above?
Yes
- Refer to DIAGNOSTIC CODE INDEX and perform the appropriate diagnostic procedure.
No
- Go To 3.
- With the scan tool, read active DTCs from all modules.
- VERIFY THE WCM IS ACTIVE ON THE BUS
- Turn the ignition on.
- With the scan tool, select ECU View.
- Verify the WCM is active on the bus.
Is the WCM active on the bus?
Yes
- Go To 4.
No
- Refer to DIAGNOSIS AND TESTING and perform the No Response from WCM diagnostic procedure.
- CHECK FOR ADDITIONAL COMMUNICATION RELATED DTCS
- With the scan tool, read active DTCs from all modules.
Is there more than one module with active DTCs "Logged Against" the WCM?
Yes
- Replace/update the Wireless Control Module in accordance with the Service Information.
- Refer to STANDARD PROCEDURE and perform the WCM VERIFICATION TEST.
No
- Replace/update the module that set this DTC in accordance with the Service Information.
- Perform the appropriate verification test for the module being replaced. If there is no verification test for the associated module, refer to STANDARD PROCEDURE and perform the BODY VERIFICATION TEST.
- With the scan tool, read active DTCs from all modules.