DTC C120C: Linear Solenoid Power Supply System Malfunction [08/2020 - ]: 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	Linear Solenoid Power Supply System Malfunction	When the 4WD relay is on, the 4WD relay monitor remains off for 1 second or more while the voltage at the IG1 terminal is 9.5 V or more When the 4WD relay is on, the 4WD relay monitor remains off for 1 second or more while the voltage at the IG1 terminal is less than 9.5 V While the 4WD relay is off, the 4WD relay monitor remains on for 1 second or more immediately after the engine switch is turned on (IG)	Wire harness or connector 4WD ECU assembly

DTC DETECTION CONDITIONS: C120C

		Vehicle Condition
		Pattern 1	Pattern 2	Pattern 3
Diagnosis Condition	When the 4WD relay is on and the voltage at the IG1 terminal is 9.5 V or more	◦	-	-
	When the 4WD relay is on and the voltage at the IG1 terminal is less than 9.5 V	-	◦	-
	While the 4WD relay is off	-	-	◦
Malfunction Status	The 4WD relay monitor remains off	◦	◦	-
Malfunction Status	The 4WD relay monitor remains on immediately after the engine switch is turned on (IG)	-	-	◦
Detection Time		1 second or more	1 second or more	1 second or more
Number of Trips		1 trip	1 trip	1 trip

HINT:

DTC will be output when conditions for any of the patterns in the table above are met.