The mode changes between ACCESSORY and ON, but it is difficult to change to OFF (LOCK)
Diagnostic procedure
- Check the body control module
- Check the gauge control module
- Check the park pin switch
Also check for
- Gauge control module
- Body control module
- PCM
- B-CAN communication line open/short
- F-CAN communication line open/short
- Speed signal line open
- Park pin switch
- P-PIN SW line open