3. Switch on the ignition.
Display: battery voltage
If 0 V is displayed, check DME relay or wire from DME relay, terminal 87, to the electric change-over valve, pin 1, for continuity.
2 Perform adaptation.
1. Switch on the ignition.
2. Wait one minute.
Do not press the accelerator.
3. Switch off the ignition for at least 10 seconds.
84 Secondary Air Injection Pump - Above Limit
P0418
84 Secondary air injection pump - open circuit
Diagnosis conditions
- Engine running
- Battery voltage greater than 7 V
Possible fault cause
- Wiring harness
- Relay faulty
- DME control module faulty
Affected terminals
Terminal III/11
Diagnosis/troubleshooting
84 Secondary air injection pump - below limit
Diagnosis conditions
- Engine running
- Battery voltage greater than 7 V
Possible fault cause
- Short circuit to ground