Coolant Shutoff Valve Open Circuit
P1656 - COOLANT SHUTOFF VALVE OPEN CIRCUIT
Diagnosis conditions
- Engine running
- Battery voltage greater than 7 V
- Coolant temperature greater than 90 °C or ATF temperature > 85 °C
Possible fault cause
- Wiring harness
- DME control module
- Coolant shutoff valve
Affected terminals
- Terminal IV/40
Diagnosis/Troubleshooting