FC 93-101
P1657
P1657
274 Overrun Recirculating Air Valve Output Stage - Open Circuit
Diagnosis conditions
- Engine running
- Battery positive voltage greater than 7 V
Possible fault cause
- Open circuit
- Open circuit in B+ supply
- Overrun recirculating air valve
Affected terminals
III/16
Diagnosis/Troubleshooting
NOTE: The wiring for the overrun recirculating air valve is routed via the connector X 59/3 pin 8.