Ignition Relay Malfunction Detection Function
WARNING: This page is about a different car, the 2014 Nissan 370Z. However, it is still accessible from the selected car via links, so may be relevant.
- IPDM E/R monitors the voltage at the contact circuit and excitation coil circuit of the ignition relay inside it.
- IPDM E/R judges the ignition relay error if the voltage differs between the contact circuit and the excitation coil circuit.
- If the ignition relay cannot turn OFF due to contact seizure, it activates the tail lamp relay and the daytime running light relay* for 10 minutes to alert the user to the ignition relay malfunction when the ignition switch is turned OFF.
| Voltage judgment |
IPDM E/R judgment |
Operation |
| Ignition relay contact side |
Ignition relay excitation coil side |
| ON |
ON |
Ignition relay ON normal |
- |
| OFF |
OFF |
Ignition relay OFF normal |
- |
| ON |
OFF |
Ignition relay ON stuck |
- Detects DTC "B2098: IGN RELAY ON"
- Turns ON the tail lamp relay and the daytime running light relay for 10 minutes
|
| OFF |
ON |
Ignition relay OFF stuck |
Detects DTC "B2099: IGN RELAY OFF" |