Isuzu D-Max / Isuzu Rodeo (TFR/TFS). Manual - part 1213

8-192  ELECTRICAL-BODY AND CHASSIS 

4.  Wiper does not operate at “HI” position 
 

Checkpoint  

Trouble 

Cause 

 

Countermeasure 

 

Repair open circuit or
connector contact

Open circuit or poor connector
contact

NG

Replace the wiper motor

Wiper motor function when
connecting the motor
connector1 

C-4

 to the

battery (+) terminal, and 3

C-4

 to the (-) terminal

(Should the wiper motor rotate
at a high speed)

Wiper motor malfunction

NG

OK

Continuity between the wiper
& washer SW. connector
terminals 3 

C-43

 and 4 

C-43

at the “HI” position

Repair open circuit or
connector contact

Continuity between 4 

C-43

and1 

C-4

Open circuit or poor connector
contact

NG

OK

 

 
 
5.  Rotation of the wiper motor does not stop 
 

Replace the wiper & washer
SW.

SW. malfunction

NG

OK

Continuity in the wiper &
washer SW.

Replace the wiper motor

Wiper motor function

Wiper motor malfunction

NG

 

 

ELECTRICAL-BODY AND CHASSIS  8-193 

6.  Auto-stop function of the wiper motor does not operate 
 

Checkpoint  

Trouble 

Cause 

 

Countermeasure 

 

Repair open circuit or
connector contact

Open circuit or poor connector
contact

NG

Repair open circuit or
connector contact

Open circuit or poor connector
contact

NG

Continuity between the
intermittent relay harness side
connector 6 

C-3

 and the

wiper motor harness side
connector 5 

C-4

Replace the intermittent relay

Relay malfunction

NG

Intermittent relay function

Wiper motor function
1. Disconnect the wiper motor

connector

2. Connect the motor

connector 2 

C-4

 to the

battery (+) terminal and 3

C-4

 to the (-) terminal,

and then change the
connection of the battery (+)
terminal to the connector 6

C-4

 while the motor

rotating at a low speed

3. Check to see if the wiper

motor stops at the auto stop
position when connecting
the connector terminals 2

C-4

 and 5 

C-4

 in this

condition

Continuity between the wiper
& washer SW. connector
terminals 5 

C-43

 and 6 

C-43

at the “OFF” position

OK

Replace the wiper motor

Wiper motor malfunction

NG

Repair an open circuit or a
poor connection of the
connectors between the fuse
No. CB-8 (20A) (RHD: CB-6
(20A) ) and 6 

C-4

Voltage between the wiper
motor harness side connector
terminal 6 

C-4

 and the

ground (Should be battery
voltage present)

Open circuit or poor connector
contact

NG

OK

OK

OK

 

 

8-194  ELECTRICAL-BODY AND CHASSIS 

WASHER 

1.  Washer motor does not operate 
 

Checkpoint  

Trouble 

Cause 

 

Countermeasure 

 

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

Poor fuse contact or blown

NG

Repair or an open circuit or a
poor connection of the
connectors between 1 

C-17

and 7 

C-43

Open circuit or poor connector
contact

NG

Voltage between the washer
motor harness side connector
terminal 1 

C-17

 and the

ground when the washer
button is depressed (Should
be battery voltage present)

Repair grounding point
(

C-36

) contact

Poor grounding point contact

NG

Grounding point (

C-36

)

Replace the washer motor

Motor malfunction

NG

Washer motor function when
connecting the motor side
connector 1 

C-17

 to the

battery (+) terminal, and the
connector 2 

C-17

 to the (-)

terminal (Should the washer
motor rotate)

OK

Repair open circuit or
connector contact

Open circuit or poor connector
contact

NG

Continuity between 2 

C-17

and 

C-36

OK

Continuity between the wiper
& washer SW. side connector
terminals 

C-43

 and 7 

C-43

when the washer button is
depressed

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

OK

Replace the wiper & washer
SW.

SW. malfunction

NG

Repair or an open circuit or a
poor connection of the
connectors between the fuse
No. CB-8 (20A) (RHD: CB-6
(20A) )and 1 

C-43

Voltage between the wiper &
washer SW. harness side
connector terminal 1 

C-43

and the ground (Should be
battery voltage preset)

Open circuit or poor connector
contact

NG

OK

OK

OK

 

ELECTRICAL-BODY AND CHASSIS  8-195 

 

  REMOVAL AND INSTALLATION 

 

 

 

WIPER AND WASHER SWITCH 

Removal 

Refer to the removal steps of the LIGHTING SWITCH 
(COMBINATION SWITCH) in “ LIGHTING “ of this section. 
 

 
 

 
 

Installation 

Follow the removal procedure in the reverse order to install the 
wiper and washer switch. 

 

 

Pay close attention to the important points mentioned in the 
following paragraphs. 
 

Connector 

Be absolutely sure that the wiper and washer switch connector 
is securely connected. 
This will prevent a poor contact and an open circuit.