ISUZU KB P190 2007 Workshop Repair Manual
KB P190 2007
ISUZU
ISUZU
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ISUZU KB P190 2007 Workshop Repair Manual
Page 5423 of 6020
ELECTRICAL-BODY AND CHASSIS 8A-485
CIRCUIT DIAGRAM C24SE (LHD)
RTW 780XF014501
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Page 5424 of 6020

8A-486 ELECTRICAL-BODY AND CHASSIS
TROUBLE SHOOTING
Rear defogger inoperative
Checkpoint Trouble Cause Countermeasure
Reinstall or replace the fuse
No. C7 (10A) and 9
B56
Poor fuse contact or blown
NG
Reinstall or replace the fuse
C18 (20A)
C18 (20A, Fuse box)
Poor fuse contact or blown
Replace the rear defogger
switch
Rear defogger switch function
Switch malfunction
NG
NG
OK
OK
OK
Fuse No. C3 (10A, Fuse box)
and 9
B56
Replace the rear defogger
relay
Relay malfunction
NG
Continued on the next page
Rear defogger relay function
Repair grounding point contact
Grounding point
C2
Poor grounding point contact
NG
OK
Repair open circuit or poor
connector contact between
fuse No. C3 (10A) and 3
B7 , C18 (20A) and 1
B7 , 2 B7 (3 B55) and
1
L4 , 4 B7 (3 B54)
and 3
B46 or 1 B46 and
C2
Voltage between 1 L4 -
ground when the starter switch
and the rear defogger switch
are at on position (should be
battery voltage present)
Open circuit or poor connector
contact
NG
OK
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Page 5425 of 6020
ELECTRICAL-BODY AND CHASSIS 8A-487
Checkpoint Trouble Cause Countermeasure
OK
Repair open circuit or
connector contact between 1
L7 and C2
Open circuit or poor connector
contact
NG
Continued from the previous page
Continuity between 1
L7
and
C2
Repair heat wire
Continuity between rear
defogger terminals
Broken heat wire of rear
defogger
NG
OK
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Page 5431 of 6020
ELECTRICAL-BODY AND CHASSIS 8A-493
CIRCUIT DIAGRAM C24SE
RTW 780XF014601
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Page 5432 of 6020
8A-494 ELECTRICAL-BODY AND CHASSIS
CIRCUIT DIAGRAM HFV6
RTW 78AXF013301
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Page 5433 of 6020
ELECTRICAL-BODY AND CHASSIS 8A-495
CIRCUIT DIAGRAM 4JJ1-TC / 4JK1-TC (RHD) SOUTH AFRICA
RTW 78AXF018601
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Page 5434 of 6020
8A-496 ELECTRICAL-BODY AND CHASSIS
CIRCUIT DIAGRAM 4JJ1-TC / 4JK1-TC EXCEPT SOUTH AFRICA
RTW 78AXF028601
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Page 5435 of 6020
ELECTRICAL-BODY AND CHASSIS 8A-497
CIRCUIT DIAGRAM 4JA1T(L), 4JH1-TC
RTW 78AXF009801
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Page 5443 of 6020
ELECTRICAL-BODY AND CHASSIS 8A-505
CIRCUIT DIAGRAM C24SE
RTW 680XF014201
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Page 5444 of 6020
8A-506 ELECTRICAL-BODY AND CHASSIS
CIRCUIT DIAGRAM HFV6 (RHD)
RTW 78AXF023801
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