Diagnostic Test
- ACTIVE DTC
- Ignition on, engine not running.
- With the scan tool, View PCM DTCs.
Is the DTC Active at this time?
Yes
- Refer to DTC-Based Diagnostics/MODULE, Front Control (FCM) - Diagnosis and Testing and perform the U0293-Lost Communication with Hybrid Control Module (HGM) diagnostic procedure.
No
- Refer to Non-DTC Diagnostics/Communication - Diagnosis and Testing and perform the Stored Lost Communication DTCs diagnostic procedure.