headlight bulb ISUZU KB P190 2007 Workshop Repair Manual

8A-24 ELECTRICAL-BODY AND CHASSIS
MAIN DATA AND SPECIFICATIONS
BULB SPECIFICATIONS
This illustration based on LHD

RTW 78AMF000801
Light Name Bulb No. Rated Power
V-W Number
of Bulbs Lens
Color Remarks
H4 12-60/55 2 W hite A type, Halogen
HB3 12-65 2 W hite
H7 12-55 2 W hite A type, Halogen
projector type
HB3 12-60 2 W hite High Bean
Headlight
HB4 12-51 2 W hite B type
Low Bean
High mounted stoplight W 5W 12-5 4 RED
Fog light H3 12-55 2 W hite
Front turn signal light PY21W 12-21 2 W hite Bulb Lens color
Amber
Clearance light W 5W 12-5 2 W hite
Door mirror-turn signal light
(out side mirror type) - -
2 W hite LED (Illuminated
color Amber)
Side turn signal light W 5W 12-5 2 W hite with
amber
inner lens
Rear turn signal light
PY21W 12-21 2 W hite Bulb Lens color
Amber
Rear fog light P21W 12-21 1 Red
Tail and stoplight P21/5W 12-21/5 2 Red

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ELECTRICAL-BODY AND CHASSIS 8A-161
2. High or low beam does not light on both headlights

Checkpoint Trouble Cause Countermeasure


Repair or replace the
combination switch

Dimmer ⋅passing switch
continuity

Poor switch contact or switch
faulty

NG

Repair open circuit or
connector contact
Voltage between
4
X4 - ground and
4
B60 - ground

Open circuit between
headlight and dimmer ⋅passing
switch

NG
OK



3. RH (or LH) high and low beam does not light



Replace the headlight bulb

Headlight connector continuity

Blown filament or air leakage

NG

Repair or replace the wire
and/or connector
W iring continuity between
connector 3
C19 - fuse No.
EB7 or 3
C26 fuse No.
EB8

Open circuit and/or poor
connector contact

NG
OK

Reinstall or replace fuse No.
EB7 or No. EB8
Fuse No. EB7 (10A) or
No. EB8 (10A) (Relay and
fuse box)
(No. EB7 RH, No. EB8: LH)
Poor installation or blown fuse

NG
OK



4. High or low beam does not light on one headlight (RH or LH)

Replace the headlight
assemblyHeadlight connector continuityBlown filament
NG
Repair open circuit or
connector contactW iring continuity between
headlight and dimmer ⋅passing
switchOpen circuit between
headlight and dimmer ⋅passing
switch
NG
OK



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8A-162 ELECTRICAL-BODY AND CHASSIS
5. Headlight does not go out

Checkpoint Trouble Cause Countermeasure


Replace the lighting relay
Lighting relay continuity
between connector 1
X6
- 2
X6 (Should be no
continuity)

Relay point fused

NG

Replay the combination
switch Lighting switch continuity
between connector 3
B60
-1
B60 when switch is
OFF(S hould be no continuity)

point fused or faulty


NG
OK
OK

Repair or replace the
combination switch
Dimmer ⋅passing switch con-
tinuity between connector
3
B60 - 1 B60 when switch
is not operating
(Should be no continuity)

Switch point fused or faulty

NG
Repair short circuit
between 3
X6 - 3 B60
and 5
X2 - 2 B60
Check if headlight goes out
when connector
C2 , C36
is disconnected


Short circuit

NG
OK



6. Insufficient headlight brightness



Replace the headlight bulb

Headlight bulb

Bulb filament faulty

NG

Repair the wiring
Dimmer ⋅passing switch
W ire continuity between con-
nector 1
B60 - C2


Poor ground point contact

NG
OK

Clean the light lens

Headlight lens

Lens dirty

NG
OK



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8A-166 ELECTRICAL-BODY AND CHASSIS
LIGHTING SYSTEM
REMOVAL AND INSTALLATION


3 2
1
RTW 78ASH000101

FRONT COMBINATION LIGHT (A type)
Removal
1. Remove the radiator grille 1.
Refer to the removal procedure of the RADIATOR GRILLE
in Section 2B “SHEET METAL”.
2. Remove the front bumper
3.
Refer to the removal procedure of the FRONT BUMPER in
Section 2A “FRAME AND BUMPER”.
3. Disconnect the headlight connector.
4. Disconnect the clearance light connector.
5. Disconnect the turn signal light connector.
6. Remove the front combination light assembly
2.
• Remove four fixing screws.



HEADLIGHT ASSEMBLY (B type)
Removal
1. Open the bonnet.
2. Remove the front combination light assembly. • Refer to "Front Combination Light Assembly" removal
procedure in this section.
3. Remove the radiator grille. • Refer to "Radiator grille" removal procedure in 2B
section.
4. Remove the front bumper. • Refer to "Front Bumper" removal procedure in 2B
section.
5. Disconnect headlight bulb connectors.

RTW 580SH0008001
6. Remove the bolts of headlight assembly. 7. Remove the headlight assembly.



Installation
To install the front combination light assembly, follow the
removal procedure in reverse order.


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ELECTRICAL-BODY AND CHASSIS 8A-167


HEADLIGHT (HALOGEN STD TYPE)
(A type)
Removal
1. Remove the head light socket.
2. Remove the headlight dust cover.


3. Slide out the lock spring.


4. Remove the bulb.



1
RTW 78ASH000801

HEADLIGHT (HALOGEN PROJECTOR
TYPE)
Removal
1. Remove the head light socket.
2. Remove the headlight dust cover
1.



1

RTW 78ASH000901
3. Turn the bulb socket counterclockwise to remove it.
4. Remove the headlight bulb
1.

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8A-168 ELECTRICAL-BODY AND CHASSIS
HALOGEN HEADLIGHT BULB (B type)
Removal
1. Open the bonnet.
2. Disconnect the headlight bulb connectors.

RTW 580SH000101
3. Turn the bulb counterclockwise to remove it.


Installation
To install the headlight, follow the removal procedure in
reverse order.
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.


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ELECTRICAL-BODY AND CHASSIS 8A-177
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.


4. Keep the vehicle 2 1m apart from the screen 1.
5. Draw a horizontal line through point
A and Bon the screen
1.


6. Turn the headlight low beam on.
7. Adjust the CUTLINE 11.6 mm below the horizontal line
H.
8. Adjust the BENDING POINT to the vertical line
V.
NOTE:
Always adjust vertical adjustment first.


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