2004 ISUZU TF SERIES switch

ELECTRICAL-BODY AND CHASSIS 8A-143

RTW48ASH000401

Inspection
Check to see if there is any continuity between the terminals of
the front fog light switch.
Replace the switch when the result of inspection is found
abnormal.

Removal
Preparation:
Disconnect the battery ground cable.
1. Ventilation grille
2. Harness connector
3. Front fog light & Rear fog light switch
To remove the switch, push the lock from the back side of
the cluster assembly.
4. Remove the bulb.




RTW48ASH000301
Installation
To install, follow the removal steps in the reverse noting the
following point.
1. Push in the switch with your fingers until it locks securely.

8A-148 ELECTRICAL-BODY AND CHASSIS




RTW48ASH000701

REAR FOG LIGHT
Removal
1. Remove the screws 1.
2. Remove the lens cover
2.
3. Rear fog push turn the bulb
3 counterclockwise to
disconnect it from the light housing.



Installation
Follow the removal procedure in the reverse order to install the
rear fog light.
Pay close attention to the important points mentioned in the
following paragraphs.



Bulb
Be absolutely sure that the license plate light bulb is correctly
installed.
This will prevent a poor contact and open circuit.




RTU4Z0SH000601
FRONT FOG & RR FOG SWITCH



RTW48ASH000401

Inspection
Check to see if there is any continuity between the terminals of
the leveling switch.
Replace the switch when the result of inspection is found
abnormal.

Removal
Preparation:
Disconnect the battery ground cable.
1. Ventilation grille
2. Harness connector
3. Front fog light & Rear fog light switch
To remove the switch, push the lock from the back side of
the cluster assembly.
4. Remove the bulb.

ELECTRICAL-BODY AND CHASSIS 8A-153

HEADLIGHT LEVELING SWITCH
Incorrect beam angle due to load change can be corrected.
A four position switch, 0-3, can alter the beam angle through
1.7 degrees on the long wheel base model and 2.17 degrees
on the short wheel base model.
825R300049

Inspection
Check to see if there is any continuity between the terminals of
the leveling switch.
Replace the switch when the result of inspection is found
abnormal.



Removal
Preparation:
Disconnect the battery ground cable.
1. Ventilation grille
2. Harness connector
3. Headlight leveling switch
To remove the switch, push the lock from the back side of
the cluster assembly.



Installation
To install, follow the removal steps in the reverse noting the
following point.
1. Push in the switch with your fingers until it locks securely.

8A-160 ELECTRICAL-BODY AND CHASSIS


RTU4Z0SH000901
ILLUMINATION SWITCH




RTW48ASH000601

Inspection
Check to see if there is any continuity between the terminals of
the switch.
Replace the switch when the result of inspection is found
abnormal.




RTW48ASH000501

Removal
Preparation:
Disconnect the battery ground cable.
1. Instrument panel driver lower cover assembly
Refer to the removal steps Sec.10
2. Harness switch
3. Illumination control
To remove the switch, push the lock from the back side of
the cluster assembly.
4. Remove the bulb.

8A-166 ELECTRICAL-BODY AND CHASSIS
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


Continuity between
9
H-9 - 2 F-6 (LH) (or
2
F-5 (RH))


Open circuit or poor connector
contact

Continuity between

C-109 - 4 F-6 (LH) (or
4
F-5 (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 F-6
ground or 2
F-5 - 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.
SBF-9 (50A)
or 1
C-108 - 4
C-107
Fuse No. C-18 (15A)


Fuse No. SBF-9 (50A, Fuse
and Relay box)
or 1
C-108 - 4
C-107
Fuse No. C-18 (15A)


Poor fuse contact or blown
NG
OK

8A-168 ELECTRICAL-BODY AND CHASSIS
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
5
B-60 - 6 B-60 and
5
B-60 - 7 B-60 when
turn signal switch operates
Short circuit between
connector 3
B-61 - 1 B-61
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.
EB-16 (10A)

Fuse No. EB-16 (10A, Fuse
box)

Poor fuse contact or blown
fuse
NG
OK OK

Repair open circuit or
connector contact
Continuity between
connector 2
B-61 -ground
(Should be continuity)


Open circuit or poor connector
contact
NG

ELECTRICAL-BODY AND CHASSIS 8A-169
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
3
C-25 - 6 B-60 (FRT),
1
C-35 - 6 B-60 (SIDE)
1
F-6 - 6 B-60 (RR)
(RH)
Continuity between
3
C-18 - 7 B-60 (FRT),
1
C-1 - 7 B-60 (SIDE)
1
F-5 - 7 B-60 (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 5 B-16 -
ground (Should be battery
voltage present)

Hazard SW. continuity


Reinstall or replace the fuse
No. EB-16 (10A)

Fuse No. EB-16 (10A, 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-16 (10A) -
5
B-16 NG



4. Flashing rate too fast (One side)

Replace the bulb or repair
open circuitInspect bulbBurned out bulb NG

8A-170 ELECTRICAL-BODY AND CHASSIS
BACKUP LIGHT
1. Backup light does not light on one side (RH or LH)

Checkpoint Trouble Cause Countermeasure

Repair grounding point contactPoor ground contact NGGrounding point
Replace the bulb or repair
connector contactBackup light bulb continuityBurned 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 F-6
(5
F-5 ) - 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.
C-4 (15A)

Fuse No. C-4 (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