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Can Communication Control: Notes

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%