Isuzu KB P190. Manual — part 1302

8A-270 ELECTRICAL-BODY AND CHASSIS

CIRCUIT DIAGRAM HFV6

RTW78AXF002201

ELECTRICAL-BODY AND CHASSIS 8A-271

CIRCUIT DIAGRAM 4JJ1-TC/4JK1-TC, 4JH1-TC

RTW78AXF027201

8A-272 ELECTRICAL-BODY AND CHASSIS

CIRCUIT DIAGRAM 4JA1T (L)

RTW78AXF005701

ELECTRICAL-BODY AND CHASSIS 8A-273

TROUBLESHOOTING

WINDSHIELD WIPER

1. Wiper dose not operate at any switch position

Checkpoint

Trouble

Cause

Countermeasure

Reinstall or replace the fuse
No. C9 (20A)

Poor fuse contact or blown

NG

Repair open circuit or
connector contact

1. Wiper motor function when

connecting the motor
connector 3

C4

to the

battery (+) terminal, and 1

C4

to the (-) terminal

(Should the wiper motor
rotate at a low speed)

2. Wiper motor function when

connecting the motor
connector 2

C4

to the

battery (+) terminal, 1

C4

to the (-) terminal

(Should the wiper motor
rotate at a high speed)

Voltage between 3

B59

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

Fuse No. C9 (20A)

Repair grounding point
contact

Grounding point

C2

(LHD),

C

C36

(RHD)

Poor grounding point contact

NG

OK

OK

Replace the wiper motor

Wiper motor malfunction

NG

Repair open circuit or
connector contact

Continuity between 1

C4

and

C36

(RHD),

C2

(LHD)

Open circuit or poor connector
contact

NG

OK