ISUZU TF SERIES 2004 Workshop Manual

ELECTRICAL-BODY AND CHASSIS 8A-123
7. Passing light does not function when dimmer switch is operated

Checkpoint Trouble Cause Countermeasure


Repair or replace the dimmer
switch

Dimmer switch

Poor switch point contact
NG

Repair open circuit between
4
X-12 - 3 B-60

Voltage between
3
B-60 - ground (Should
be battery voltage present)


Open circuit
NG OK



8. Headlight beam does not change when dimmer switch is operated

Repair or replace the dimmer
switchDimmer switchLoose beam lever or foreign
material in switch NG

8A-124 ELECTRICAL-BODY AND CHASSIS
TAIL LIGHT, LICENSE PLATE LIGHT, CLEARANCE LIGHT

1. All lights do not light

Checkpoint Trouble Cause Countermeasure



Repair or replace the
combination switch
Lighting switch continuity
between connector
2
B-60 - 1 B-60


Poor switch point or connector
contact
NG

Reinstall or replace the tail
relay

Tail relay


Poor relay contact or relay
faulty
NG OK

Reinstall or replace the fuse
No. EB-6

Fuse No. EB-6 (10A, Relay
and fuse box)

Poor fuse contact or blown
NG
OK



2. Tail light does not light


Replace the bulb or repair
connector contact

Tail light bulb continuity

Bulb burned out or poor
connector contact
NG

Repair open circuit or
connector contact
Continuity between connector
3
F-5 - 4 F-5 (RH)
or 3
F-6 - 4 F-6 (LH)


Open circuit or poor connector
contact
NG OK

ELECTRICAL-BODY AND CHASSIS 8A-125
TAIL LIGHT-LH, LICENSE PLATE LIGHT, CLEARANCE LIGHT

1. All lights do not light (EC-LHD)

Checkpoint Trouble Cause Countermeasure



Repair or replace the
combination switch
Lighting switch continuity
between connector
2
B-60 - 1 B-60


Poor switch point or connector
contact
NG

Reinstall or replace the tail
relay

Tail relay


Poor relay contact or relay
faulty
NG OK

Reinstall or replace the fuse
No. EB-6

Fuse No. EB-6 (10A, Relay
and fuse box)

Poor fuse contact or blown
NG
OK



2. Tail light does not light


Replace the bulb or repair
connector contact

Tail light bulb continuity

Bulb burned out or poor
connector contact
NG

Repair open circuit or
connector contact

Continuity between connector
or 3
F-6 - 4 F-6 (LH)

Open circuit or poor connector
contact
NG OK

8A-126 ELECTRICAL-BODY AND CHASSIS
TAIL LIGHT-RH

1. All lights do not light (EC-LHD)

Checkpoint Trouble Cause Countermeasure



Repair or replace the
combination switch
Lighting switch continuity
between connector
2
B-60 - 1 B-60


Poor switch point or connector
contact
NG

Reinstall or replace the tail
relay

Tail relay


Poor relay contact or relay
faulty
NG OK

Reinstall or replace the fuse
No. EB-6

Fuse No. EB-5 (10A, Relay
and fuse box)

Poor fuse contact or blown
NG
OK



2. Tail light does not light


Replace the bulb or repair
connector contact

Tail light bulb continuity

Bulb burned out or poor
connector contact
NG

Repair open circuit or
connector contact

Continuity between connector
3
F-5 - 4 F-5 (RH)


Open circuit or poor connector
contact
NG OK

ELECTRICAL-BODY AND CHASSIS 8A-127
3. License plate light does not light

Checkpoint Trouble Cause Countermeasure



Repair open circuit or
connector contact

Continuity between
connector 1
F-7 - 2 F-7


Open circuit or poor connector
contact
NG

Replace the bulb or repair
connector contact

License plate light bulb
continuity

Bulb burned out or poor
connector contact
NG
OK



4. Clearance light does not light

Replace the bulb or repair
connector contactClearance light bulb continuityBulb burned out or poor
connector contact NG

8A-128 ELECTRICAL-BODY AND CHASSIS
LIGHTING SYSTEM
REMOVAL AND INSTALLATION


HEADLIGHT
Removal
1. Remove the radiator grille center bolt.
2. Use a screwdriver to raise the clip and release the lock.
Place a clean rag beneath the screwdriver tip to protect the
body painted surfaces.
3. Remove the radiator grille.
4. Remove the front bumper.
5. Disconnect the headlight connector.
6. Remove the headlight assembly.
7. Remove the headlight cover.
 Remove the gaid.
8. Remove the headlight.


HALOGEN HEADLIGHT
Removal
1. Remove the head light socket.
2. Remove the headlight cover.



3. Out side the lock spring.



4. Remove the bulb.

ELECTRICAL-BODY AND CHASSIS 8A-129
Installation
Follow the removal procedure in the reverse order to install the
headlight.
Pay close attention to the important points mentioned in the
following paragraphs.


Connector
Be absolutely sure that the headlight connector is securely
connected.
This will prevent a contact and an open circuit.

This illustration is based on RHD model

LIGHTING SWITCH
Removal
1. Disconnect the battery ground cable.
2. Remove the steering wheel
1.
Refer to the “STEERING” Section of this manual.
3. Remove the Instrument panel lower cover
2.
4. Remove the steering column cover
3.


This illustration is based on RHD model
5. Disconnect the connector.
6. Remove the lighting switch from the steering shaft.





Installation
Follow the removal procedure in the reverse order to install the
lighting switch.
Pay close attention to the important points mentioned in the
following paragraphs.



Connector
Be absolutely sure that the lighting switch connector is securely
connected.
This will prevent a poor contact and an open circuit.


Wire Harness
Do not pinch the wire harnesses between the cluster and the
meter hood during the cluster installation procedure.
Wire damage will result.

8A-130 ELECTRICAL-BODY AND CHASSIS
FRONT TURN LIGHT
Removal
RTW38DSH000601

1. Turn the socket counterclockwise to disconnect it from the
front turn light housing.
2. Pull the bulb from the socket.


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



Connector
Be absolutely sure that the clearance light connector is
securely connected.
This will prevent a poor contact and an open circuit.


CLEARANCE LIGHT
Removal
RTW38DSH000601

1. Turn the socket counterclockwise to disconnect it from the
clearance light housing.
2. Pull the bulb from the socket.


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



Connector
Be absolutely sure that the clearance light connector is
securely connected.
This will prevent a poor contact and an open circuit.

ELECTRICAL-BODY AND CHASSIS 8A-131


LICENSE PLATE LIGHT
Removal
1. Remove the lens cover 1 and the connector 2.
2. Pull the bulb
3 to remove it.



Installation
Follow the removal procedure in the reverse order to install the
license plate 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.



HEADLIGHT BEAM SWITCH
(COMBINATION SWITCH)
Removal
1. Disconnect the battery ground cable.
2. Remove the screws on the lower part of the steering wheel.
3. Remove the horn pad.
4. Remove the wiring connector.
5. Remove the steering wheel fixing nuts.
6. Remove the steering wheel.
Refer to the "STEERING" Section of this manual.
7. Remove the Instrument panel lower cover.
8. Remove the steering column cover.
9. Disconnect the connector.
10. Remove the headlight beam switch (lever) from the steering
shaft (combination switch).


Installation
Follow the removal procedure in the reverse order to install the
headlight beam switch (lever).
Pay close attention to the important points mentioned in the
following paragraphs.



Connector
Be absolutely sure that the headlight beam switch connector is
securely connected.
This will prevent a poor contact and an open circuit.

8A-132 ELECTRICAL-BODY AND CHASSIS

Wire Harness
Do not pinch the wire harnesses between the cluster and the
meter hood during the cluster installation procedure.
Wire damage will result.


AIMING OF HEADLIGHT
Check and adjust the inflation pressures, clean the headlight,
park the vehicle on a level surface and insure that vehicle is at
curb weight.


VERTICAL ADJUSTMENT
Use a screwdriver for vertical adjustment.



HORIZONTAL ADJUSTMENT
Use a screwdriver horizontal adjustment.


Installation
To install, follow the removal steps in the reverse order.
Noting the following point:
1. After installing the headlight, be sure to adjust the headligh
t
aim.

HEADLIGHT ADJUSTMENT
Preparation
Place the vehicle with 1 person in driver seat on a level surface
and check to see if the inflation pressure of the tires is correct,
the lenses are clean, the battery is sufficiently charged, and
adjust to place vehicle by using the screen.
1. Set a vertical screen on a level surface.
2. Toward the screen
1from the bulb center mark of the
headlight, extend parallel lines to the floor. Mark point
A
and B on the screen at the intersection of parallel line and
the screen.
3. Draw vertical lines through point
A and B on the screen.