Can Communication Control
When CAN communication with ECM and BCM is impossible, IPDM E/R performs fail-safe control. After CAN communication recovers normally, it also returns to normal control.
If No CAN Communication Is Available With ECM
FAIL-SAFE REFERENCE CHART
| Control part |
Fail-safe operation |
| Cooling fan |
- The cooling fan relay-1, the cooling fan relay-2 and the cooling fan relay-3 turn ON when the ignition switch is turned ON (Cooling fan HI operation)
- The cooling fan relay-1, the cooling fan relay-2 and the cooling fan relay-3 turn OFF when the ignition switch is turned OFF
|
| A/C compressor |
A/C relay OFF |
| Alternator |
Outputs the power generation command signal (PWM signal) 0% |
If No CAN Communication Is Available With BCM
FAIL-SAFE REFERENCE CHART
| Control part |
Fail-safe operation |
| Headlamp |
- Turns ON the headlamp low relay when the ignition switch is turned ON
- Turns OFF the headlamp low relay when the ignition switch is turned OFF
- Headlamp high relay OFF
- Daytime running light relay OFF
|
- Parking lamps
- Side marker lamps
- License plate lamps
- Illuminations
- Tail lamps
|
- Turns ON the tail lamp relay when the ignition switch is turned ON
- Turns OFF the tail lamp relay when the ignition switch is turned OFF
|
| Front wiper |
- The status just before activation of fail-safe control is maintained until the ignition switch is turned OFF while the front wiper is operating at LO or HI speed.
- The wiper is operated at LO speed until the ignition switch is turned OFF if the failsafe control is activated while the front wiper is set in the INT mode and the front wiper motor is operating.
|
| Front fog lamps |
Front fog lamp relay OFF |
| Rear window defogger relay |
Rear window defogger relay OFF |
| Horn |
Horn OFF |