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.
IPDM E/R JUDGMENT CHART
| 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" |
|
NOTE:
*: With daytime running light system
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