Isuzu D-Max / Isuzu Rodeo (TFR/TFS). Manual - part 1514

8-156  ELECTRICAL-BODY AND CHASSIS

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.

EB-2 (10A)

Fuse No EB-2 (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
2 

X-4

 - ground or 5 

X-4

- ground (Should be battery
voltage present)

OK

Repair open circuit or

reconnect the connector

Open circuit or poor connector

contact between fuse No. EB-

2 (10A) and horn relay

NG

Remove 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

4 

X-4

 - 12 

C-42

1 

X-4

 - 1 

C-20

 (1 

C-21

)

OK

Repair open circuit or

connector contact

Open circuit or poor connector

contact

NG

ELECTRICAL-BODY AND CHASSIS  8-157

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 

C-20

(1 

C-21

) - 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 material

Stain foreign material in the

horn

NG

Horn

Recharge or replace the

battery

Battery condition

Discharged battery

NG

OK

8-158  ELECTRICAL-BODY AND CHASSIS

 

  REMOVAL AND INSTALLATION

REAR COMBINATION LIGHT
Stoplight

Removal

1. Open the rear gate.

2. Remove the screws of rear combination light.

3. Remove the rear combination light assembly.

4. Turn the bulb 

2

 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.

ELECTRICAL-BODY AND CHASSIS  8-159

FRONT TURN LIGHT

Removal

1. Remove the screws of the front turn light.

2. Pull out the light housing for front turn light from bumper.

3. Push  the  bulb  in  and  turn  it  counterclockwise  to  remove  it

from the light housing.

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.

Bulb

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