DTC C1A27-11: Compressor Circuit - Circuit short to ground: Action
- Refer to the appropriate system wiring diagrams and check the self-levelling suspension air supply unit isolation relay circuits for short circuit to ground. Repair circuit(s) as required, clear the DTCs and retest
- Refer to the appropriate system wiring diagrams and check the self-levelling suspension air supply unit isolation relay high current terminals for short circuit to one another. Repair circuit(s) as required, clear the DTCs and retest
- If the fault persists, install a new self-levelling suspension air supply unit isolation relay. Clear the DTCs and retest