Clearance, Tail And License Plate Light Symptom Diagnosis; Back-Up Light Symptom Diagnosis - Suzuki GRAND VITARA Owner's Manual

9B-12 Lighting Systems:
Condition
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".
• Check each part in the
order from the top of
the following list.
Flash rate low

Clearance, Tail and License Plate Light Symptom Diagnosis

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.
Condition
All lights do not light up
Some lights do not light
up

Back-Up Light Symptom Diagnosis

Condition
Back-up lights do not
light up
Back-up lights stay on
Possible cause
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
Possible cause
Circuit fuse blown
Lighting and dimmer switch of
combination switch faulty
Wiring or grounding faulty
BCM faulty
Bulb(s) blown
Wiring or grounding faulty
Possible cause
Bulb(s) blown
Circuit fuse blown
Back-up light switch (M/T model) or
transmission range sensor (A/T model)
faulty
Wiring or grounding faulty
Back-up light switch (M/T model) or
transmission range sensor (A/T model)
faulty
Correction / Reference Item
Replace fuse(s) and check for short circuit.
referring to "Turn Signal and Hazard Warning
Relay Inspection: ".
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: ".
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: ".
Correction / Reference Item
Replace fuse and check for short circuit.
Check lighting and dimmer switch 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".
Replace bulb(s).
Repair circuit.
Correction / Reference Item
Replace bulb(s).
Replace fuse and check for short circuit.
Check back-up light switch or transmission
range sensor referring to "Back Up Light
Switch Inspection: in Section 5B" or
"Transmission Range Sensor Inspection and
Adjustment: in Section 5A".
Repair circuit.
Check back-up light switch or transmission
range sensor referring to "Back Up Light
Switch Inspection: in Section 5B" or
"Transmission Range Sensor Inspection and
Adjustment: in Section 5A".
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