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DTC C1380/64 Stop Light Control Relay Malfunction: Description

Upon receiving the downhill assist control or hill-start assist control operating signal from the skid control ECU, the relay contact turns on and the stop light comes on.

DTC DETECTION CONDITION CHART

DTC No. DTC Detection Condition Trouble Area
C1380/64
  • The voltage at the IG1 terminal is between 10 V and 14 V, the stop light driving output (STPO) is on and a signal has not been input to the STP terminal for 5 seconds or more.
  • The voltage at the IG1 terminal is between 10 V and 14 V, the stop light driving output (STPO) is off and the input signal at the STP terminal is different from the input signal at the STP2 terminal for 5 seconds or more.
  • Stop light operation relay
  • Stop light operation relay circuit
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