Isuzu D-Max / Isuzu Rodeo (TFR/TFS). Service manual — part 1308
8–152 ELECTRICAL-BODY AND CHASSIS
BACKUP LIGHT
1.
Backup light does not light on one side (RH or LH)
Checkpoint
Trouble Cause
Countermeasure
Burned out bulb or poor
connector contact
Replace the bulb or repair
connector contact
Backup light bulb continuity
Poor ground contact
Repair grounding point
contact
Grounding point
NG
OK
NG
2.
Backup light does not light on both sides
Poor fuse contact or blown
fuse
Reinstall or replace fuse
No. CB-11 (15A)
Fuse No. CB-11 (15A, Fuse
box)
Poor switch point contact
or faulty switch
Repair or replace the switch
Back up light switch (mode
switch) continuity
Open circuit or poor
connector contact
Repair open circuit or
connector contact
Voltage between 5 T-1
(5 T-6 ) - ground with
starter switch ON and shift
lever into reverse position
(Should be battery voltage
present)
OK
OK
NG
NG
NG
ELECTRICAL-BODY AND CHASSIS 8–153
HORN
1.
Both sides of horn do not sound
Checkpoint
Trouble Cause
Countermeasure
Poor fuse contact or blown
fuse
Reinstall or replace fuse
No. EB-2 (10A)
Fuse No EB-2 (10A, Relay
and fuse box)
Poor ground contact
Repair the grounding point
Grounding point
Poor relay contact or faulty
horn relay
Reinstall or replace the
horn relay
Horn relay
Open circuit or poor
connector contact between
fuse No. EB-2 (10A) and
horn relay
Repair open circuit or
reconnect the connector
Voltage between connector
2 X-4 - ground or 5 X-4
- ground (Should be battery
voltage present)
Remove steering pad and
steering wheel
Poor switch point contact
or faulty switch
Repair or replace the horn
switch
Horn switch continuity
NG
OK
OK
OK
OK
NG
NG
NG
NG
Open circuit or poor
connector contact
Repair open circuit or
connector contact
Continuity between
4 X-4 -
12 C-42
1 X-4 -
1 C-20 (1 C-21 )
OK
NG
8–154 ELECTRICAL-BODY AND CHASSIS
2.
One side of horn does not blow
Checkpoint
Trouble Cause
Countermeasure
Faulty horn assembly
Replace the horn assembly
Horn continuity between
connectors
Open circuit or poor
connector contact
Repair open circuit or
reconnect the connector
Voltage between 1 C-20
(1 C-21 )- ground with
horn switch depressed
(Should be battery voltage
present)
NG
OK
NG
3.
Insufficient horn volume
Discharged battery
Recharge or replace the
battery
Battery condition
Stain or foreign material in
the horn
Clean and/or remove the
foreign material
Horn
OK
NG
NG
ELECTRICAL-BODY AND CHASSIS 8–155
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.
D08RV751
4. Turn the bulb
2 counterclockwise to remove it.
2
D08RV887
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.
REMOVAL AND INSTALLATION
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