DTC B1C43-23: Master Interior Light Switch - Signal stuck low: Action
NOTE:
This DTC may be induced by the driver operating the interior lamp switch for longer than 60 seconds.
- Refer to the appropriate system wiring diagrams and check the interior lamp switch signal circuit for short circuit to ground. Repair the wiring harness or install a new interior lamp as necessary
- Check the operation of the interior lamp switch. Install a new interior lamp as necessary