Diagnostic Test
- VERIFY 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.
- Using a scan tool, read active DTCs.
Is this DTC active?
Yes
- Refer to DTC-Based Diagnostics/MODULE, Totally Integrated Power (TIPM) - Diagnosis and Testing and perform the U0168-Lost Communication with Vehicle Security Control Module (WIN) diagnostic procedure.
No
- Refer to Non-DTC Diagnostics/Communication - Diagnosis and Testing and perform the Stored Lost Communication DTCs diagnostic procedure.
- Using a scan tool, read active DTCs.