Circuit ISUZU KB P190 2007 Workshop Repair Manual

ELECTRICAL-BODY AND CHASSIS 8A-231
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
1
C25 - 6 B60 (FRT),
1
C35 - 6 B60 (SIDE)
1
F6 - 6 B60 (RR)
(RH)
Continuity between
1
C22 - 7 B60 (FRT),
1
C1 - 7 B60 (SIDE)
1
F5 - 7 B60 (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
B16 -
ground (Should be battery
voltage present)

Hazard SW . continuity


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

Fuse No. EB16 (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. EB16 (10A) -
5
B16
NG



4. Flashing rate too fast (One side)

Replace the bulb or repair
open circuitInspect bulbBurned out bulb
NG


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8A-232 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 F6
(5
F5 ) - ground with
starter switch ON and shift
lev er into rev erse position
(Should be battery v oltage
present)

Back up light switch (mode
switch) continuity


Reinstall or replace fuse No.
C10 (15A)

Fuse No. C10 (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



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ELECTRICAL-BODY AND CHASSIS 8A-233
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.
EB15 (10A)

Fuse No EB15 (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
3
X3 - ground or 1 X3
- ground (Should be battery
v oltage present) OK

Repair open circuit or
reconnect the connector
Open circuit or poor connector
contact between fuse No.
EB15 (10A) and horn relay

NG

Remov e 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
5
X3 - 10 B60
2
X3 - 1 C20 (1 C21 )
OK

Repair open circuit or
connector contact

Open circuit or poor connector
contact

NG



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8A-234 ELECTRICAL-BODY AND CHASSIS
2. One side of horn does not blow

Checkpoint Trouble Cause Countermeasure



Repair open circuit or
reconnect the connector

Open circuit or poor connector
contact

NG Voltage between 1
C20
(1
C21 ) - ground with
horn switch depressed
(Should be battery voltage
present)

Replace the horn assembly

Horn continuity between
connectors

Faulty horn assembly

NG
OK



3. Insufficient horn volume

Clfean and/or remove the
foreign materialStain foreign material in the
horn
NGHorn
Recharge or replace the
batteryBattery conditionDischarged battery
NG
OK



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ELECTRICAL-BODY AND CHASSIS 8A-235
REMOVAL AND INSTALLATION



A Type
RTW 780SH002101

REAR COMBINATION LIGHT
Stoplight
Removal
1. Open the tail gate.
2. Remove the screws of rear combination light.
3. Remove the rear combination light assembly.




B Type
RTW 580SH000401



A Type
RTW 780SH001201
4. Turn the bulb (1) counterclockwise to remove it.




B Type
RTW 580SH000501



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



Bulb
Be absolutely sure that each bulb is correctly installed.
This will prevent a poor contact and an open circuit.


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8A-236 ELECTRICAL-BODY AND CHASSIS
HIGH MOUNTED STOPLIGHT
Remove the bulb socket
1. Remove the high mounted stoplight ASM. • Remove the screws.
• Disconnect the connector.

2. Remove the bulb socket.
• Turn the bulb
1 counterclockwise to remove it.


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



Bulb
Be absolutely sure that each bulb is correctly installed.
This will prevent a poor contact and an open circuit.



DOOR MIRROR - TURN SIGNAL LIGHT
Removal
1. Pull the lower outside corner of the mirror toward you.





RUW 580SH000701
2. Press the blade of an ordinary screwdriver (2) into the
mirror outside groove near the mirror base hole (1).

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8A-238 ELECTRICAL-BODY AND CHASSIS

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




A Type
RTW 780SH002101















REAR COMBINATION LIGHT
Turn Signal Light
Removal
1. Open the tail gate.
2. Remove the screws.
3. Remove the rear combination light assembly.



B Type
RTW 580SH000401



A Type
RTW 780SH001301

4. Turn the bulb 1 counterclockwise to remove it.




B Type
RTW 78ASH002501

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

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ELECTRICAL-BODY AND CHASSIS 8A-239

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


RTW 780SH000901
This illustration is based on RHD model
TURN SIGNAL LIGHT 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 instruments panel lower cover
2.
4. Remove the steering column cover
3.




RTW 780SH001001
This illustration is based on RHD model
5. Disconnect the connector.
6. Remove the turn signal switch from the steering shaft.




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



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




A Type
RTW 780SH002101

REAR COMBINATION LIGHT
Backup Light
Removal
1. Open the rear gate.
2. Remove the screws.
3. Remove the rear combination light assembly.

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8A-240 ELECTRICAL-BODY AND CHASSIS


B Type
RTW 580SH000401



A Type
RTW 780SH001401

4. Turn the bulb 1 counterclockwise to remove it.




B Type
RTW 78ASH002601



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



Bulbs
Be absolutely sure that each bulb is correctly installed.
This will prevent a poor contact and an open circuit.




RTW 780SH001501
This illustration is based on RHD model

HAZARD WARNING FLASHER SWITCH
Removal
1. Disconnect the battery ground cable.
2. Instrument Panel Cluster Assembly • Refer to Section 10 “BODY” for instrument panel cluste
r
assembly removal steps.
3. Hazard W arning Switch • Disconnect the switch connector.
• To remove the switch, push the lock from the back side
of the cluster assembly.

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ELECTRICAL-BODY AND CHASSIS 8A-241

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



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

BACKUP LIGHT SWITCH
Removal
1. Disconnect the battery ground cable.
2. Disconnect the connector
1.
3. Remove the backup light switch from the transmission
2.



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



Backup Light Switch Threads
Apply liquid gasket to the threaded portion and install the
backup light switch.



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




HORN
Removal
1. Remove the radiator grille.
Refer to the “HEADLIGHT” removal procedure.
2. Loosen the horn bolt.
3. Disconnect the horn connector.


Installation
Follow the removal procedure in the reverse order to install the
horn.
Pay close attention to the important point mentioned in the
following paragraphs.



Connector
Be absolutely sure the horn connector is securely connected.
This will prevent a poor contact and open circuit.


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