Turn Signal and Hazard Warning Light Symptom Diagnosis

WARNING: This page is about a different car, the 2008 Suzuki Grand Vitara and 2007 Suzuki Grand Vitara. However, it is still accessible from the selected car via links, so may be relevant.

TURN SIGNAL AND HAZARD WARNING LIGHT SYMPTOM DIAGNOSIS TABLE

Condition	Possible Cause	Action
Flash rate high or one side only flashes	Bulb blown on "flash rate high"-side	Replace bulb .
	Incorrect bulb	Replace bulb .
	Turn signal/hazard warning relay faulty	Check turn signal/hazard warning relay by referring to TURN SIGNAL AND HAZARD WARNING RELAY INSPECTION .
	Open circuit or high resistance existing either; between turn signal switch and non lighting bulb, or between hazard warning switch and non lighting bulb	Repair circuit .
	Wiring or grounding faulty	Repair circuit .
No flashing NOTE: Use of SUZUKI scan tool makes it easy to check whether a faulty condition is on the input side or output side of BCM. For checking procedure, refer to DIAGNOSIS USING OUTPUT TEST FUNCTION OF SUZUKI SCAN TOOL under Scan Tool Data. Check each part in the order from the top of the following list.	Circuit fuse(s) blown	Replace fuse(s) and check for short circuit .
	Turn signal/hazard warning relay faulty	Check turn signal/hazard warning relay by referring to TURN SIGNAL AND HAZARD WARNING RELAY INSPECTION .
	Turn signal light switch faulty	Check turn signal light switch by referring to TURN SIGNAL LIGHT SWITCH (IN LIGHTING SWITCH) INSPECTION .
	Hazard warning switch faulty	Check hazard warning switch referring to HAZARD WARNING SWITCH INSPECTION .
	Open circuit or high resistance existing between battery and switch	Repair circuit .
	Wiring or grounding faulty	Repair circuit .
	BCM faulty	Replace after making sure that none of above parts is faulty .
Flash rate low	Supply voltage low	Check charging system .
Flash rate low	Turn signal/hazard warning relay faulty	Check turn signal/hazard warning relay by referring to TURN SIGNAL AND HAZARD WARNING RELAY INSPECTION .