AWD System

If any malfunction occurs in AWD electrical system, and control unit detects the malfunction, AWD warning lamp on combination meter turns ON to indicate system malfunction.
When AWD warning lamp is ON, vehicle changes to front-wheel drive or shifts to 4-wheel drive (rear-wheels still have some driving torque).
AWD system activates its protection function (shuts down AWD system temporarily) if AWD system detects high load continuously or the front wheel tire size differs from the rear tire size. (AWD system is automatically restored if AWD system no longer detects any overload or the tire size difference is eliminated.)

Mode	Warning lamp	DTC	Detected area (Error area)	Error area and root cause
Protection function	Blinking^{* 1}	-	AWD control unit	Transfer assembly in protection mode. It is not malfunction. (Internal temperature rise of electronic controlled coupling)
Protection function	Blinking^{* 2}	-	Outer diameters of front and rear wheel tires	Malfunction in each tire or different tire diameter
Fail-safe	ON	C1201	AWD control unit	Internal malfunction of AWD control unit
		C1203	ABS actuator and electric unit (control unit)	Malfunction of ABS actuator and electric unit (control unit) Vehicle speed signal error
		C1204	AWD solenoid	Internal malfunction of electronic controlled coupling Malfunction of AWD solenoid power supply circuit (open or short) Malfunction of AWD solenoid command current
		C1205	AWD control unit AWD solenoid	Internal malfunction of AWD control unit Malfunction of AWD solenoid power supply circuit (open or short)
		C1210	ECM	Malfunction of engine control system
		C1211	AWD communication line/AWD control unit/ABS actuator and electric unit (control unit)	Open of the harness of AWD communication line AWD communication error Transmission by AWD control unit Reception by ABS actuator and electric unit (control unit)
		C1212	AWD communication line/ABS actuator and electric unit (control unit)/AWD control unit	Short of harness of AWD communication line on the power supply side or on the ground side. AWD communication error Reception by AWD control unit Transmission by ABS actuator and electric unit (control unit)
		U1000	CAN communication line	CAN communication error Malfunction of ABS actuator and electric unit (control unit)
		U1010	AWD control unit	Malfunction of ABS actuator and electric unit (control unit)

* 1: Quick blinking: 2 times/second (blinking for approx. 1 minute and then turned OFF)

* 2: Slow blinking: 1 time/2 seconds (continuing to blink until ignition switch is turned OFF)