Isuzu D-Max / Isuzu Rodeo (TFR/TFS). Manual — part 1099
ELECTRICAL-BODY AND CHASSIS 8-153
TURN SIGNAL LIGHT AND HAZARD WARNING LIGHT
1. Turn signal light does not light on both sides (RH and LH)
Checkpoint
Trouble Cause
Countermeasure
Replace the flasher unit
Flasher unit malfunction
NG
Repair or replace the
combination switch
Turn signal switch continuity
between connector
3
C-42
- 4
C-42
and
3
C-42
- 5
C-42
when
turn signal switch operates
Short circuit between
connector 1
C-45
- 2
C-45
when turn signal switch
operates with starter switch
in “ON” position (Turn
signal light should be ON)
Poor switch point contact or
faulty switch
NG
OK
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
Continuity between
connector 3
C-45
-ground
(Should be continuity)
Open circuit or poor connector
contact
NG
8-154 ELECTRICAL-BODY AND CHASSIS
2. Turn signal light does not light on one side (RH or LH)
Checkpoint
Trouble Cause
Countermeasure
Repair open circuit or
connector contact
Open circuit or poor connector
contact
NG
(LH)
Continuity between
2
C-25
- 4
C-42
(FRT),
1
C-1
- 4
C-42
(SIDE)
1
T-6
- 4
C-42
(RR)
(RH)
Continuity between
2
C-22
- 5
C-42
(FRT),
1
C-1
- 5
C-42
(SIDE)
1
T-6
- 5
C-42
(RR)
Repair or replace the
combination switch
Turn signal switch continuity
Poor switch point contact or
faulty switch
NG
OK
OK
Repair open circuit or
connector contact
Open circuit or poor connector
contact
NG
3. Hazard warning light does not light
Repair or replace the hazard
SW.
Hazard SW. malfunction
NG
Voltage between 2
B-16
-
ground (Should be battery
voltage present)
Hazard SW. continuity
Reinstall or replace the fuse
No. EB-1 (15A)
Fuse No. EB-1 (15A, Relay
and fuse box)
Poor fuse contact or blown
fuse
NG
OK
OK
Repair open circuit or
connector contact
Open circuit or poor
connector contact between
fuse No. EB-1 (15A) -
2
B-16
NG
4. Flashing rate too fast (One side)
Replace the bulb or repair
open circuit
Inspect bulb
Burned out bulb
NG
ELECTRICAL-BODY AND CHASSIS 8-155
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
8-156 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
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