Headlight Symptom Diagnosis (Other Than Discharge Headlight Model); Auto-On Headlight System Symptom Diagnosis (If Equipped) - Suzuki SX4 Service Manual

Headlight Symptom diagnosis (Other than Discharge Headlight Model)

Condition
Only one low beam does
not light up
Low beam does not light
up
Only one high beam does
not light up
High beam does not light
up

Auto-On Headlight System Symptom Diagnosis (If Equipped)

Condition
Headlights are not turned
ON or OFF automatically
even after darkened or
lightened
Possible cause
Circuit fuse blown
Bulb blown
Headlight low beam relay faulty (if
equipped)
Wiring or ground faulty
Circuit fuse blown
Headlight low beam relay faulty (if
equipped)
Lighting or dimmer switch faulty
Bulbs blown
Wiring or ground faulty
DRL controller faulty (if equipped)
Circuit fuse blown
Bulb blown
Headlight high beam relay faulty (if
equipped)
Wiring or ground faulty
Circuit fuse blown
Headlight high beam relay faulty (if
equipped)
Lighting or dimmer switch faulty
Bulbs blown
Wiring or ground faulty
Possible cause
Circuit fuse blown
Lighting or dimmer switch faulty
Auto-on headlight sensor faulty
Wiring or ground faulty
Auto-on headlight controller faulty
Lighting Systems:
Correction / Reference Item
Replace fuse and check for short circuit.
Replace bulb.
Check headlight relay referring to "Tail Light
Relay, Headlight Relay, Front Fog Light Relay
Inspection (If Equipped)".
Repair circuit.
Replace fuses and check for short circuit.
Check headlight relay referring to "Tail Light
Relay, Headlight Relay, Front Fog Light Relay
Inspection (If Equipped)".
Check lighting and dimmer switch referring to
"Headlight Switch (in Lighting Switch)
Inspection".
Replace bulbs.
Repair circuit.
Check system referring to "Inspection of DRL
Controller and Its Circuits (If Equipped)".
Replace fuse and check for short circuit.
Replace bulb.
Check headlight relay referring to "Tail Light
Relay, Headlight Relay, Front Fog Light Relay
Inspection (If Equipped)".
Repair circuit.
Replace fuses and check for short circuit.
Check headlight relay referring to "Tail Light
Relay, Headlight Relay, Front Fog Light Relay
Inspection (If Equipped)".
Check lighting and dimmer switch referring to
"Headlight Switch (in Lighting Switch)
Inspection".
Replace bulbs.
Repair circuit.
Correction / Reference Item
Replace fuse and check for short circuit.
Check lighting and dimmer switch referring to
"Headlight Switch (in Lighting Switch)
Inspection".
Check auto-on headlight sensor referring to
"Auto-On Headlight Sensor Inspection (If
Equipped)".
Repair circuit.
Check auto-on headlight controller for function
referring to "Inspection of Auto-On Headlight
Controller and Its Circuit (If Equipped)".
9B-9
S7RW0A9204004
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