Warning Buzzer Circuit Symptom Diagnosis; Cigarette Lighter Symptom Diagnosis (If Equipped); Horn Symptom Diagnosis - Suzuki GRAND VITARA Owner's Manual

9C-9 Instrumentation / Driver Info. / Horn:
Condition
Main beam (high beam)
indicator stay ON

Warning Buzzer Circuit 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
Warning buzzer shows no
sounding

Cigarette Lighter Symptom Diagnosis (If Equipped)

Condition
Cigarette lighter shows
no operation

Horn Symptom Diagnosis

Condition
Horn does not operate
Possible cause
Data (information) can not be received
by CAN communication
Combination switch faulty
Wiring or ground faulty
Combination meter faulty
BCM faulty
Possible cause
Circuit fuse blown
Driver side door switch faulty
Lighting switch faulty
Key remainder switch faulty
Wiring or ground faulty
BCM faulty
Possible cause
Circuit fuse blown
ACC relay faulty
Cigarette lighter faulty
Ignition switch faulty
Wiring or grounding faulty
Possible cause
Circuit fuse blown
Horn switch faulty
Horn relay faulty
Wiring or grounding faulty
Horn faulty
Correction / Reference Item
Check BCM for DTC referring to "DTC Check:
in Section 10B".
Check combination switch referring to
"Headlight Switch (in Lighting Switch)
Inspection: in Section 9B".
Repair circuit.
Replace combination meter.
Replace after making sure that none of above
parts is faulty.
Correction / Reference Item
Replace fuse and check for short circuit.
Check driver side door switch referring to
"Door Switch (Front / Rear / Rear End Door)
Inspection: ".
Check lighting switch referring to "Headlight
Switch (in Lighting Switch) Inspection: in
Section 9B".
Check key remainder switch referring to
"Ignition Switch Inspection: ".
Repair circuit.
Replace after making sure that none of above
parts is faulty.
Correction / Reference Item
Replace fuse and check for short circuit.
Replace relay
Check cigarette lighter.
Check ignition switch referring to "Ignition
Switch Inspection: ".
Repair circuit.
Correction / Reference Item
Replace fuse and check for short circuit.
Check horn switch.
Check horn relay.
Repair circuit.
Replace horn.
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