Diagnostic Test
- VERIFY DTC IS ACTIVE NOTE: Ensure the IOD fuse is installed and battery voltage is between 10 and 16 volts before proceeding.
- With the scan tool, read active DTCs.
Is this DTC active?
Yes
- Go to step 2
No
- Refer to the Stored Lost Communication diagnostic procedure. Refer to Non-DTC Diagnostics/Communication - Diagnosis and Testing .
- 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 TIPM configuration, 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
- Diagnose and repair the DTC.
No
- Go to step 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 Network Diagnostics.
- Verify the WCM is active on the bus.
Is the WCM active on the bus?
Yes
- Go to step 4
No
- Perform the No Response diagnostic procedure. Refer to Non-DTC Diagnostics/Communication - Diagnosis and Testing .
- CHECK FOR ADDITIONAL COMMUNICATION RELATED DTCS
- With the scan tool, select Network Diagnostics.
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.
- Perform WCM VERIFICATION TEST
No
- Replace/update the module that set this DTC in accordance with the Service Information.
- Perform the appropriate VERIFICATION TEST.
- With the scan tool, select Network Diagnostics.