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DTC C120C/79: Linear Solenoid Power Supply System Malfunction [09/2015 - 08/2019]: Description

This DTC is output by the 4WD ECU assembly if a malfunction occurs in the linear solenoid power supply system.

DTC No. Detection Item DTC Detection Condition Trouble Area
C120C/79 Linear Solenoid Power Supply System Malfunction
  1. When the 4WD relay is operating, the 4WD relay monitor remains off for 1 second or more while the voltage at the IG 1 terminal is 9.5 V or more
  2. When the 4WD relay is operating, the 4WD relay monitor remains off for 1 second or more while the voltage at the IG 1 terminal is less than 9.5 V
  3. While the 4WD relay is not operating, the 4WD relay monitor remains on for 1 second or more after the engine switch is turned on (IG)
  • Wire harness and connector (IG 1 circuit, GND circuit)
  • 4WD ECU assembly