Isuzu D-Max / Isuzu Rodeo (TFR/TFS). Manual — part 1381
ELECTRICAL-BODY AND CHASSIS 8-89
BACKUP LIGHT
1. Backup light does not light on one side (RH or LH)
Checkpoint
Trouble Cause
Countermeasure
Repair grounding point contact
Poor ground contact
NG
Grounding point
Replace the bulb or repair
connector contact
Backup light bulb continuity
Burned out bulb or poor
connector contact
NG
OK
2. Backup light does not light on both sides
Repair or replace the switch
Poor switch point contact of
faulty switch
NG
Voltage between 5
T-1
(5
T-6
) - ground with
starter switch ON and shift
lever into reverse position
(Should be battery voltage
present)
Back up light switch (mode
switch) continuity
Reinstall or replace fuse No.
CB-11 (15A)
Fuse No. CB-11 (15A, Fuse
box)
Poor fuse contact or blown
fuse
NG
OK
OK
Repair open circuit or
connector contact
Open circuit or poor connector
contact
NG
8-90 ELECTRICAL-BODY AND CHASSIS
HORN
1. Both sides of horn do not sound
Checkpoint
Trouble Cause
Countermeasure
Repair the grounding point
Poor ground contact
NG
Horn relay
Grounding point
Reinstall or replace fuse No.
EB-2 (10A)
Fuse No EB-2 (10A, Relay
and fuse box)
Poor fuse contact or blown
fuse
NG
OK
OK
Reinstall or replace the horn
relay
Poor relay contact or faulty
horn relay
NG
Voltage between connector
2
X-4
- ground or 5
X-4
- ground (Should be battery
voltage present)
OK
Repair open circuit or
reconnect the connector
Open circuit or poor connector
contact between fuse No. EB-
2 (10A) and horn relay
NG
Remove steering pad and
steering wheel
OK
Horn switch continuity
OK
Repair or replace the horn
switch
Poor switch point contact or
faulty switch
NG
Continuity between
4
X-4
- 12
C-42
1
X-4
- 1
C-20
(1
C-21
)
OK
Repair open circuit or
connector contact
Open circuit or poor connector
contact
NG
ELECTRICAL-BODY AND CHASSIS 8-91
2. One side of horn does not blow
Checkpoint
Trouble Cause
Countermeasure
Repair open circuit or
reconnect the connector
Open circuit or poor connector
contact
NG
Voltage between 1
C-20
(1
C-21
) - ground with
horn switch depressed
(Should be battery voltage
present)
Replace the horn assembly
Horn continuity between
connectors
Faulty horn assembly
NG
OK
3. Insufficient horn volume
Clfean and/or remove the
foreign material
Stain foreign material in the
horn
NG
Horn
Recharge or replace the
battery
Battery condition
Discharged battery
NG
OK
8-92 ELECTRICAL-BODY AND CHASSIS
REMOVAL AND INSTALLATION
REAR COMBINATION LIGHT
Stoplight
Removal
1. Open the rear gate.
2. Remove the screws of rear combination light.
3. Remove the rear combination light assembly.
4. Turn the bulb
2
counterclockwise to remove it.
Installation
Follow the removal procedure in the reverse order to install the
rear combination light.
Pay close attention to the important points mentioned in the
following paragraphs.
Bulb
Be absolutely sure that each bulb is correctly installed.
This will prevent a poor contact and an open circuit.
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