Isuzu D-Max / Isuzu Rodeo (TFR/TFS). Manual - part 1316

8–184 ELECTRICAL-BODY AND CHASSIS

4.

Wiper does not operate at “HI” position

Checkpoint

Trouble Cause

Countermeasure

Open circuit or poor
connector contact

Repair open circuit or
connector contact

Continuity between the
wiper & washer SW.
connector terminals 
3 C-43   and 4 C-43   at the
“HI” position

Wiper motor malfunction

Replace the wiper motor

Wiper motor function when
connecting the motor
connector 1 C-4 to the
battery (+) terminal, and 
3 C-4 to the (–) terminal
(Should the wiper motor
rotate at a high speed)

Open circuit or poor
connector contact

Repair open circuit or
connector contact

Continuity between 4 C-43
and 1  C-4

OK

OK

NG

NG

NG

5.

Rotation of the wiper motor does not stop

SW. malfunction

Replace the wiper & washer
SW.

Continuity in the wiper &
washer SW.

Wiper motor malfunction

Replace the wiper motor

Wiper motor function

OK

NG

NG

ELECTRICAL-BODY AND CHASSIS 8–185

6.

Auto-stop function of the wiper motor does not operate

Checkpoint

Trouble Cause

Countermeasure

Open circuit or poor
connector contact

Repair open circuit or
connector contact

Continuity between the
wiper & washer SW.
connector terminals 
5 C-43   and 6 C-43   at the
“OFF” position

Wiper motor malfunction

Replace the wiper motor

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

Open circuit or poor
connector contact

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

Repair open circuit or
connector contact

Continuity between the
intermittent relay harness
side connector 6 C-3 and
the wiper motor harness
side connector 5 C-4

NG

OK

OK

OK

NG

NG

NG

Relay malfunction

Replace the intermittent
relay

Intermittent relay function

OK

NG

8–186 ELECTRICAL-BODY AND CHASSIS

WASHER

1.

Washer motor does not operate

Checkpoint

Trouble Cause

Countermeasure

Poor fuse contact or blown

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

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

SW. malfunction

Replace the wiper & washer
SW.

Continuity between the
wiper & washer SW. side
connector terminals 1 C-43
and 7 C-43 when the
washer button is depressed

Open circuit or poor
connector contact

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
present)

Open circuit or poor
connector contact

Repair or an open circuit or
a poor connection of the
connectors between 
1 C-17 and 7 C-43

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)

Poor grounding point
contact

Repair grounding point 
( C-36 ) contact

Grounding point ( C-36 )

NG

OK

OK

OK

NG

NG

NG

NG

OK

Motor malfunction

Replace the washer motor

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)

NG

OK

Open circuit or poor
connector contact

Repair open circuit or
connector contact

Continuity between 2 C-17
and C-36

NG

OK

ELECTRICAL-BODY AND CHASSIS 8–187

WIPER AND WASHER SWITCH

Removal

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

OFF

PULL

MIST

OFF

HI

LO

825RV068

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.

REMOVAL AND INSTALLATION