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DTC C1380/64 Stop Light Control Relay Malfunction: Description

Upon receiving the CRAWL 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 AND TROUBLE AREA

DTC Code DTC Detection Condition Trouble Area
C1380/64
  • When 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.
  • When 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.
  • BRK LP relay
  • BRK LP relay circuit
  • Master cylinder solenoid (Skid control ECU)