1998-2003 Suzuki Alto 4 Door Body Electrical System -> Diagnosis User Manual
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Body Electrical System -> Diagnosis for Your Suzuki Alto 4 Door Fifth Generation (1998-2003)

8-6 BODY ELECTRICAL SYSTEM
DIAGNOSIS
HEADLIGHT
Trouble
Possible Cause Correction
Headlights do not light up Bulb blown
Headlight switch faulty
HEAD R and L fuses blown
Wiring or grounding faulty
Replace bulb
Replace headlight switch
Replace fuses to check for short
Repair circuit
Only one headlight does
not light up
Bulb blown
HEAD R or L fuse blown
Wiring or grounding faulty
Replace bulb
Replace fuse to check for short
Repair circuit
Only one beam (“Hi” or
“Lo”) does not light
Bulb blown
Lighting or dimmer switch faulty
Wiring harness faulty
Replace bulb
Replace switch
Repair circuit
TURN SIGNAL AND HAZARD WARNING LIGHTS
Trouble
Possible Cause Correction
Flash rate high or one side
only flashes
Bulb blown on “flash rate high”-side
Incorrect bulb
Turn signal/hazard warning relay faulty
Open circuit or high resistance
existing between combination switch
(turn signal/hazard warning switch) and
light on one side
Wiring or grounding faulty
Replace bulb
Replace bulb
Replace relay
Repair circuit
Repair circuit
No flashing HAZARD HORN and/or TURN BACK
fuse blown
Open circuit or high resistance existing
between battery and switch
Turn signal/hazard relay faulty
Combination switch (turn signal/hazard
switch) faulty
Wiring or grounding faulty
Replace fuses to check for short
Check bulb and check circuit
Replace relay
Replace switch
Repair circuit
Flash rate low Supply voltage low
Turn signal/hazard relay faulty
Check charging system
Replace relay
CLEARANCE, TAIL AND LICENSE PLATE LIGHTS
Trouble
Possible Cause Correction
All lights do not light up Bulb(s) blown
TAlL STOP fuse blown
Combination switch (lighting and dim-
mer switch) faulty
Wiring or grounding faulty
Replace bulb (s)
Replace fuse to check for short
Replace switch
Repair circuit
Some lights do not light up Bulb(s) blown
Wiring or grounding faulty
Replace bulb (s)
Repair circuit
BODY ELECTRICAL SYSTEM 8-7
BACK-UP LIGHT
Trouble
Possible Cause Correction
Back-up lights do not light
up
Bulb(s) blown
TURN BACK fuse blown
Back-up light switch faulty
Wiring or grounding faulty
Replace bulb (s)
Replace fuse to check for short
Replace switch
Repair circuit
Back-up lights stay on Back-up light switch faulty Check or replace switch
BRAKE LIGHTS
Trouble Possible Cause Correction
Brake lights do not light up Bulb(s) blown
TAlL STOP fuse blown
Brake light switch faulty
Wiring or grounding faulty
Replace bulb (s)
Replace fuse to check for short
Replace switch
Repair circuit
Brake lights stay on Brake light switch faulty Check, adjust or replace switch
FUEL METER AND FUEL GAUGE UNIT
Trouble
Possible Cause Correction
Fuel meter shows no op-
eration or incorrect opera-
tion
IG-COIL fuse blown
Fuel gauge unit faulty
Printed plate in combination meter
faulty
Fuel meter faulty
Wiring or grounding faulty
Replace fuse to check for short
Replace fuel gauge unit
Replace printed plate
Replace fuel meter
Repair circuit
ENGINE COOLANT TEMP. (ECT) METER AND ECT SENSOR
Trouble
Possible Cause Correction
Engine coolant temp. me-
ter shows no operation or
incorrect operation
IG-COIL fuse blown
ECT meter faulty
Printed plate in combination meter
faulty
ECT sensor faulty
Wiring or grounding faulty
Replace fuse to check for short
Replace ECT meter
Replace printed plate
Replace ECT sensor
Repair circuit
OIL PRESSURE LIGHT
Trouble
Possible Cause Correction
Oil pressure warning light
does not light up when
ignition switch is on at en-
gine off
Bulb in combination meter blown
IG-COIL fuse blown
Printed plate in combination meter
faulty
Oil pressure switch faulty
Wiring or grounding faulty
Replace bulb
Replace fuse to check for short
Replace printed plate
Replace oil pressure switch
Repair circuit
8-8 BODY ELECTRICAL SYSTEM
BRAKE AND PARKING BRAKE WARNING LIGHT
Trouble
Possible Cause Correction
Brake warning light does
not light up when fluid low
level
Bulb in combination meter blown
IG-COIL fuse blown
Printed plate in combination meter
faulty
Brake fluid level switch faulty
Wiring or grounding faulty
Replace bulb
Replace fuse to check for short
Replace printed plate
Replace brake fluid level switch
Repair circuit
Brake warning light does
not light up when parking
brake pull up
Bulb in combination meter blown
IG-COIL fuse blown
Printed plate in combination meter
faulty
Parking brake switch faulty
Wiring or grounding faulty
Replace bulb
Replace fuse to check for short
Replace printed plate
Replace parking brake switch
Repair circuit
Brake warning light stay on Brake fluid level switch and/or parking
brake switch faulty
Replace switch
WINDSHIELD WIPER AND WASHER
FRONT WIPER AND WASHER
Trouble
Possible Cause Correction
Wiper malfunctions or
does not return to its origi-
nal position
WIPER WASHER fuse blown
Wiper motor faulty
Combination switch (wiper switch)
faulty
Wiring or grounding faulty
Replace fuse to check for short
Replace wiper motor
Replace switch
Replace circuit
Washer malfunctions Washer hose or nozzle clogged
WIPER WASHER fuse blown
Washer motor faulty
Combination switch (wiper switch)
faulty
Wiring or grounding faulty
Clean or repair clogged hose or nozzle
Replace fuse to check for short
Replace washer motor
Replace switch
Repair circuit
INTERIOR LIGHT
Trouble
Possible Cause Correction
Interior light does not light
up
Bulb blown
TAIL STOP fuse blown
Interior light switch faulty
Door switch faulty
Wiring or grounding faulty
Replace bulb
Replace fuse to check for short
Replace switch
Replace switch
Repair circuit
HORN
Trouble
Possible Cause Correction
Horn does not operate HAZARD HORN fuse blown
Horn switch faulty
Horn faulty
Replace fuse to check for short
Replace horn switch
Replace horn

Related Topics

Body Electrical System
General Description On-Vehicle Service

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