Isuzu D-Max / Isuzu Rodeo (TFR/TFS). Manual — part 1108
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
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
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