Can Communication Control

When CAN communication with the ECM and BCM is impossible, the IPDM E/R performs fail-safe control. After CAN communication recovers normally, the IPDM E/R also returns to normal control.

If no CAN Communication Is Available With ECM

Control part	Fail-safe operation
Cooling fan	The cooling fan turns ON when the ignition switch is ON (Cooling fan HI operation). The cooling fan turns OFF when the ignition switch is OFF.
A/C compressor	A/C relay OFF

If no CAN Communication Is Available With BCM

Control part	Fail-safe operation
Headlamp	Turns ON the headlamp (LO) when the ignition switch is placed ON. Turns OFF the headlamp (LO) when the ignition switch is placed OFF. Headlamp (HI): OFF
Front wiper motor	The status just before activation of fail-safe control is maintained until the ignition switch is placed OFF while the front wiper is operating at LO or HI speed. The wiper is operated at LO speed until the ignition switch is placed OFF if the fail-safe control is activated while the front wiper is set in the INT mode and the front wiper motor is operating. Automatically returns wiper to stop position when the ignition switch is placed ON if fail-safe control is activated while front wiper motor is operated and wiper stop in a position other than stop.
Parking lamp License plate lamp Tail lamp Illumination	Turns ON the tail lamp, parking lamp, license plate lamp and each illumination when the ignition switch is placed ON. Turns OFF the tail lamp, parking lamp, license plate lamp and each illumination when the ignition switch is placed OFF.
Front fog lamp	Front fog lamp relay OFF.
Horn	Horn OFF
Ignition relay-1	The status just before activation of fail-safe is maintained.
Starter motor	Starter relay OFF