Isuzu D-Max / Isuzu Rodeo (TFR/TFS). Manual — part 1380
ELECTRICAL-BODY AND CHASSIS 8-85
TROUBLESHOOTING
STOPLIGHT AND HIGH MOUNTED STOPLIGHT
1. One side of stoplight does not light
Checkpoint
Trouble Cause
Countermeasure
Replace the bulb or repair
connector contact
Burned out bulb or poor
connector contact
NG
Repair open circuit or
connector contact
Repair open circuit or
connector contact
Open circuit or poor connector
contact
LHD:
Continuity between
8
H-8
- 2
T-1
(LH) (or
2
T-6
(RH))
RHD:
Continuity between
18
H-6
- 2
T-1
(LH) (or
2
T-6
(RH))
Open circuit or poor connector
contact
Continuity between
B-34
- 4
T-1
(LH) (or
4
T-6
(RH))
NG
NG
OK
OK
Stoplight bulb continuity
2. Both sides of stoplight do not light
Adjust the switch installation
position
Stop light switch (or brake
switch) function
Incorrect the switch installation
or adjustment
NG
Repair open circuit or
connector contact
Voltage between 2
T-1
ground or 2
T-6
- ground
with brake pedal depressed
(Should be battery voltage
present)
Open circuit or poor connector
contact between stoplight
switch (or brake switch) and
stoplight
NG
OK
Reinstall or replace fuse No.
EB-11 (10A)
Fuse No. EB-11 (10A, Fuse
and Relay box)
Poor fuse contact or blown
NG
OK
8-86 ELECTRICAL-BODY AND CHASSIS
3. High mounted stoplight does not light
Checkpoint
Trouble Cause
Countermeasure
Repair or replace the high
mounted stoplight
Continuity between 1
L-5
-
1
L-6
High mounted stoplight
malfunction
NG
Repair an open circuit or
connector contact between
1
L-5
- 8
H-8
Voltage between 1
L-5
-
ground with brake pedal
depressed
(Should be battery voltage
present)
Open circuit or poor connector
contact
NG
OK
Repair grounding point
(
B-28
) contact
Grounding point (
B-28
)
Poor grounding point contact
NG
OK
ELECTRICAL-BODY AND CHASSIS 8-87
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
8-88 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
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