Warning Buzzer Circuit Symptom Diagnosis; Cigarette Lighter Symptom Diagnosis (If Equipped); Horn Symptom Diagnosis - Suzuki Swift Sport 2004 Service & Repair Manual

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
Circuit fuse blown
Driver side door switch faulty
Lighting switch faulty
Key reminder switch faulty
Seat belt switch faulty (if equipped)
Wiring and/or grounding faulty
BCM faulty
Possible cause
Circuit fuse blown
Cigarette lighter faulty
Ignition switch faulty
Wiring and/or grounding faulty
Possible cause
Circuit fuse blown
Horn switch faulty
Horn relay faulty
Wiring and/or grounding faulty
Horn faulty
Instrumentation / Driver Info. / Horn:
Correction / Reference Item
Replace fuse and check for short circuit.
Check driver side door switch referring to
"Door Switch (Front / Rear Door) Inspection".
Check lighting switch referring to "Headlight
Switch (in Lighting Switch) Inspection in
Section 9B".
Check key reminder switch referring to
"Ignition Switch Inspection".
Check seat belt switch referring to "Front Seat
Belt Inspection in Section 8A".
Repair as necessary.
Replace after making sure that none of above
parts is faulty.
Correction / Reference Item
Replace fuse and check for short circuit.
Check cigarette lighter.
Check ignition switch referring to "Ignition
Switch Inspection".
Repair as necessary.
Correction / Reference Item
Replace fuse and check for short circuit.
Check horn switch.
Check horn relay referring to "Horn Relay
Inspection".
Repair as necessary.
Check horn referring to "Horn Inspection".
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