Isuzu D-Max / Isuzu Rodeo (TFR/TFS). Manual — part 1248

ELECTRICAL-BODY AND CHASSIS 8-331

CIRCUIT DIAGRAM (LHD)

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