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DTC C2402 Motor Electrical: DTC Detecting Condition

DTC DETECTING CONDITION CHART

Item Detecting Condition Possible cause
DTC Strategy
  • Battery Voltage Monitoring
  • Open or short of power supply circuit (ABS1)
  • Faulty HECU
Case1 (Motor Relay Open or Motor Short to GND) Enable Conditions
  • If the motor relay is switched ON and motor voltage < (IGN voltage - 4V±0.5V) continued for 49msec, the failure is detected.
Case2 (Motor Lock) Enable Conditions
  • After motor relay is switched OFF, VMR is measured. If the time which VMR > 1±0.1V is less than evaluation time, recheck is performed again for a maximum of three times. When V_MR is not normal even on the third recheck, the controller recognizes it as failure.
Case3 (Motor Open, Motor Short to BATT) Enable Conditions
  • After 1.8sec from the time that motor relay is switched OFF, V_MR > 4±0.5V continued for 1.8sec, the failure is detected.
Case4 (Motor Fuse Open) Enable Conditions
  • If the motor relay is switched OFF and VMRP (Motor power supply voltage) < 4±0.5V continued for 1sec, the failure is detected.
Fail Safe
  • ABS/ESC functions are inhibited, EBD function is allowed and the ABS/ESC warning lamps are activated.
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