Turn Signal And Hazard Warning Light Symptom Diagnosis - Suzuki GRAND VITARA JB416 Service Manual

Condition
Headlight lights even if
engine stop and lighting
switch is OFF position

Turn Signal and Hazard Warning Light Symptom Diagnosis

Condition
Flash rate high or one
side only flashes
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: in
Section 10B".
• Check each part in the
order from the top of
the following list.
Flash rate low
Possible cause
Lighting switch faulty
Wiring or grounding faulty
BCM faulty
Possible cause
Bulb blown on "flash rate high"-side
Incorrect bulb
Turn signal / hazard warning relay faulty Check turn signal / hazard warning relay
Open circuit or high resistance existing
either; between turn signal switch and
non lighting bulb, or between hazard
warning switch and non lighting bulb
Wiring or grounding faulty
Circuit fuse(s) blown
Turn signal / hazard warning relay faulty Check turn signal / hazard warning relay
Turn signal light switch faulty
Hazard warning switch faulty
Open circuit or high resistance existing
between battery and switch
Wiring or grounding faulty
BCM faulty
Supply voltage low
Turn signal / hazard warning relay faulty Check turn signal / hazard warning relay
Lighting Systems:
Correction / Reference Item
Check system referring to "Headlight Switch (in
Lighting Switch) Inspection: ".
Repair circuit.
Check BCM for function referring to "Inspection
of BCM and its Circuits: in Section 10B in
related manual".
Correction / Reference Item
Replace bulb.
Replace bulb.
referring to "Turn Signal and Hazard Warning
Relay Inspection: in related manual".
Repair circuit.
Repair circuit.
Replace fuse(s) and check for short circuit.
referring to "Turn Signal and Hazard Warning
Relay Inspection: in related manual".
Check turn signal light switch referring to "Turn
Signal Light Switch (in Lighting Switch)
Inspection: ".
Check hazard warning switch referring to
"Hazard Warning Switch Inspection: in related
manual".
Repair circuit.
Repair circuit.
Replace after making sure that none of above
parts is faulty.
Check charging system.
referring to "Turn Signal and Hazard Warning
Relay Inspection: in related manual".
9B-2
S5JB0E9204009