Ignition Relay Malfunction Detection Function
- IPDM E/R monitors status of ignition relay by the voltage at ignition relay contact circuit inside it.
- IPDM E/R judges that the ignition relay is error, if status of the ignition relay and ignition switch ON signal (CAN).
- If the ignition relay cannot turn OFF due to contact seizure, it activates the tail lamp relay and daytime running light relay* for 10 minutes to alert the user to the ignition relay malfunction when the ignition switch is turned OFF.
IGNITION RELAY MALFUNCTION DETECTION FUNCTION
| Detection |
IPDM E/R judgment |
Operation |
| Ignition switch ON signal |
Ignition relay |
| ON |
ON |
Ignition relay normal |
- |
| OFF |
OFF |
Ignition relay normal |
- |
| OFF |
ON |
Ignition relay ON stuck |
Turn on the tail lamp relay and daytime running light relay for 10 minutes |
| ON |
OFF |
Ignition relay OFF stuck |
Detect DTC "B2099: IGN RELAY OFF" |