Fail- Safe Control

When CAN communication with other control units is impossible, IPDM E/R performs fail-safe control. After CAN communication recovers normally, it also returns to normal control.

Operation of control parts by IPDM E/R during fail-safe mode is as follows:

FAIL- SAFE CHART

Controlled system	Fail-safe mode
Headlamp	With the ignition switch ON, the headlamp (low) is ON. With the ignition switch OFF, the headlamp (low) is OFF.
Parking, license plate side marker and tail lamps	With the ignition switch ON, the parking, license plate, side marker and tail lamps is ON. With the ignition switch OFF, the parking, license plate, side marker and tail lamps is OFF.
Cooling fan	With the ignition switch ON, the cooling fan HI operates. With the ignition switch OFF, the cooling fan stops.
Front wiper	Until the ignition switch is turned off, the front wiper LO and HI remains in the same status it was in just before fail-safe control was initiated.
Rear window defogger	Rear window defogger relay is OFF
A/C compressor	A/C compressor is OFF
Front fog lamps	Front fog lamp is OFF