Isuzu D-Max / Isuzu Rodeo (TFR/TFS). Manual - part 1212

8-188  ELECTRICAL-BODY AND CHASSIS 

 

B-27

2

B-27

5

0.85LG/W

0.85LG/W

B-27

7

0.5GR/G

0.5B

2R/B

2R/B

2B

0.5B

2B

1.25B

B-27

3

0.85G/R

FUSE EB-13

0.85LG/W

0.85LG/W

HEADLIGHT
WASHER SW

3B/R

3B/R

HEADLIGHT WASHER 

CONTROL UNIT

B-4

4

B-4

5

2

B-4

B-4

6

B-4

3

2B/W

2B/W

0.85LG/W

17

H-8

H-7

2

H-8

20

CB-8
20A FRONT WIPER

BODY-RH

B-9   

BODY-LH

B-28   

C-2   

FENDER-RH

HEADLIGHT
WASHER MOTOR

H-8

9

C-12

1

M

C-12

2

 

 

ELECTRICAL-BODY AND CHASSIS  8-189 

CIRCUIT DIAGRAM (RHD)  

 

 

8-190  ELECTRICAL-BODY AND CHASSIS 

TROUBLESHOOTING 

WINDSHIELD WIPER 

1.  Wiper dose not operate at any switch position 
 

Checkpoint  

Trouble 

Cause 

 

Countermeasure 

 

Reinstall or replace the fuse
No. CB-8 (20A) (RHD: CB-6
(20A) )

Poor fuse contact or blown

NG

Repair open circuit or
connector contact

1. Wiper motor function when

connecting the motor
connector 2 

C-4

 to the

battery (+) terminal, and 3

C-4

 to the (-) terminal

(Should the wiper motor
rotate at a low speed)

2. Wiper motor function when

connecting the motor
connector 1 

C-4

 to the

battery (+) terminal, 3 

C-4

to the (-) terminal (Should
the wiper motor rotate at a
high speed)

Voltage between 3 

C-43

 and

the ground (Should be battery
voltage present)

Open circuit or poor connector
contact

Replace the wiper & washer
SW.

Continuity in the wiper &
washer SW.

SW. malfunction

NG

NG

OK

OK

LHD:
Fuse No. CB-8 (20A)
RHD:
Fuse No. CB-6 (20A)

Repair grounding point
(

C-2

) contact

Grounding point (

C-2

)

Poor grounding point contact

NG

OK

OK

Replace the wiper motor

Wiper motor malfunction

NG

Repair open circuit or
connector contact

Continuity between 3 

C-4

and 

C-2

Open circuit or poor connector
contact

NG

OK

 

 

ELECTRICAL-BODY AND CHASSIS  8-191 

2.  Wiper dose not operate at “ INT “ position 
 

Checkpoint  

Trouble 

Cause 

 

Countermeasure 

 

Replace the wiper & washer
SW.

SW. malfunction

NG

Repair grounding point contact

Grounding point 

C-2

Poor rounding point contact

Repair open circuit or
connector contact

Voltage between the
intermittent relay harness side
connector terminal 4 

C-3

and the ground at the “INT”
position (Should be battery
voltage present)

Open circuit or poor connector
contact

NG

NG

OK

OK

Continuity between the wiper
& washer SW connector
terminals 3 

C-43

 and 2 

C-43

at the “ INT “ position

Replace the intermittent relay

Intermittent relay function

Relay malfunction

NG

OK

 

 
 
3.  Wiper does not operate at “LO” position 
 

Replace the wiper motor

Wiper motor function
1. Disconnect the wiper &

washer SW. connector

2. Turn the starter SW. on
3. Short-circuit between the

wiper & washer SW.
harness side connector
terminals.

3.

C-43

 and 5 

C-43

4. Check to see if the wiper

motor rotates at a low
speed

Wiper motor malfunction

NG

Replace the wiper & Washer
SW.

Wiper & washer SW. function

SW. malfunction

NG

OK