DTC C1A01-96: LED Circuit - Component internal failure: Action

NOTE: If the system is in failsafe default mode due to another issue, no LEDs will illuminate. This fault does not cause the system to go to failsafe default mode

Refer to the relevant description and operation service information. Check terrain response system special program LEDs. One or more of the LEDs is suspected of not illuminating as appropriate. With the engine running press either of the selection switches and confirm the appropriate special program light emitting diode does not illuminate suspect the terrain response swichpack. Install a new terrain response swichpack as necessary