Isuzu D-Max / Isuzu Rodeo (TFR/TFS). Manual - part 1558

8-332  ELECTRICAL-BODY AND CHASSIS

CIRCUIT DIAGRAM (RHD)

ELECTRICAL-BODY AND CHASSIS  8-333

TROUBLE SHOOTING

Rear defogger inoperative

Checkpoint

Trouble Cause

Countermeasure

Reinstall or replace the fuse

No. CB-7 (15A) (RHD: fuse

No. CB-5 (15A))

Poor fuse contact or blown

NG

Reinstall or replace the fuse

No. CB-13 (15A)

Fuse No. CB-13 (15A, Fuse

box)

Poor fuse contact or blown

Replace the rear defogger

switch

Rear defogger switch function

Switch malfunction

NG

NG

OK

OK

OK

LHD:
Fuse No. CB-7 (15A, Fuse
box)
RHD:
Fuse No. CB-5 (15A, Fuse
box)

Replace the rear defogger

relay

Relay malfunction

NG

Continued on the next page

Rear defogger relay function

Repair grounding point

(

B-28

) contact

Grounding point (

B-28

)

Poor grounding point contact

NG

OK

Repair open circuit or poor
connector contact between
fuse No. CB-7 (15A) (RHD:
fuse No. CB-5 (15A)) and 2

B-7

, fuse No. CB-13 (15A)

and 5 

B-7

, 1 

B-7

 and 1

L-4

, 4 

B-7

 and 4 

B-15

 or

5 

B-15

 and 

B-28

Voltage between 1 

L-4

-

ground when the starter switch
and the rear defogger switch
are at on position (should be
battery voltage present)

Open circuit or poor connector

contact

NG

OK

8-334  ELECTRICAL-BODY AND CHASSIS

Checkpoint

Trouble Cause

Countermeasure

OK

Repair open circuit or

connector contact between 1

L-7

 and 

B-28

Open circuit or poor connector

contact

NG

Continued from the previous page

Continuity between 1 

L-7

and 

B-28

Repair heat wire

Continuity between rear

defogger terminals

Broken heat wire of rear

defogger

NG

OK

ELECTRICAL-BODY AND CHASSIS  8-335

 

  REMOVAL AND INSTALLATION

REAR DEFOGGER SWITCH (Except

South Africa, Chile)

Removal

1.Instrument Panel Cluster Assembly

• Refer to Section 10 “BODY” for instrument panel cluster

assembly removal steps.

2.Rear Defogger Switch

• Disconnect the switch connector.
• To remove the switch, push the lock from the back side

of the cluster assembly.

Installation

Follow the removal procedure in the reverse order to install the
rear defogger switch.