4WD Control Symptom Diagnosis

WARNING: This page is about a different car, the 2010 Suzuki Kizashi. However, it is still accessible from the selected car via links, so may be relevant.

Diagnose 4WD system after performing the following inspections:

Perform 4WD control system check referring to 4WD CONTROL SYSTEM CHECK .

SYMPTOM CHART

Condition	Possible Cause	Action
4WD system does not operate	2WD/i-AWD switch faulty	Check switch referring to 2WD/I-AWD SWITCH INSPECTION .
	Coupling air temperature sensor faulty	Check coupling air temperature sensor referring to COUPLING AIR TEMPERATURE SENSOR INSPECTION .
	Coupling assembly faulty	Check coupling assembly referring to COUPLING ASSEMBLY INSPECTION .
	Transfer oil temperature sensor faulty	Check transfer oil temperature sensor referring to TRANSFER OIL TEMPERATURE SENSOR INSPECTION .
	Wiring or grounding faulty	Repair wiring .
	4WD control module faulty	Check 4WD control module referring to INSPECTION OF 4WD CONTROL MODULE AND ITS CIRCUITS .
Noise	Damaged or worn bearing(s)	Refer to REAR DIFFERENTIAL INSPECTION .