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
| Control part |
Fail-safe operation |
| Cooling fan |
- Outputs the pulse duty signal (PWM signal) 100% when the ignition switch is turned ON
- Outputs the pulse duty signal (PWM signal) 0% 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
| 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
|
- Parking lamp
- License plate lamp
- Illumination
- Tail lamp
- Side marker lamp
|
- Turns ON the tail lamp relay and daytime running light relay when the ignition switch is turned ON
- Turns OFF the tail lamp relay and daytime running light relay when the ignition switch is turned OFF
|
| Front wiper motor |
- 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 fail-safe control is activated while the front wiper is set in the AUTO mode and the front wiper motor is operating.
- Returns automatically wiper to stop position when ignition switch is turned ON if fail-safe control is activated while front wiper motor is operated and wiper stop in the other than stop position.
|
| Front fog lamp |
Front fog lamp relay OFF |
| Horn |
Horn OFF |
| Ignition relay |
The status just before activation of fail-safe is maintained. |
| Starter motor |
Starter control relay OFF |
| Steering lock unit |
Steering lock relay OFF |