Immobilizer Open Circuit/No Signal

P1571 - IMMOBILIZER OPEN CIRCUIT/NO SIGNAL

Diagnosis conditions
- Start condition
- Motronic reset

Possible fault cause
- Open circuit in wiring between DME control module and alarm system
- Short circuit to ground or short circuit to B+
- Alarm system control module faulty

Diagnosis/Troubleshooting

Steps 1 - 5: