Circuit ISUZU KB P190 2007 Workshop Repair Manual

8A-422 ELECTRICAL-BODY AND CHASSIS

CIRCUIT DIAGRAM 4JA1T (L) Sheet 1/2







RTW 78AXF010001

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ELECTRICAL-BODY AND CHASSIS 8A-423

CIRCUIT DIAGRAM 4JA1T (L) Sheet 2/2

















RTW 78AXF010101

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8A-424 ELECTRICAL-BODY AND CHASSIS

CIRCUIT DIAGRAM C24SE (LHD)


RTW 780XF014001

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ELECTRICAL-BODY AND CHASSIS 8A-425

CIRCUIT DIAGRAM HFV6 (LHD)


RTW 78AXF015301

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8A-426 ELECTRICAL-BODY AND CHASSIS

CIRCUIT DIAGRAM 4JJ1-TC/4JK1-TC 4JH1-TC G.EXP


RTW 78AXF028101

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8A-428 ELECTRICAL-BODY AND CHASSIS

1. All windows do not operate

Checkpoint Trouble Cause Countermeasure


Reinstall or replace the fuse
C20 (30A)

Poor fuse contact or blown

NG


Replace the circuit breaker
C20 (50A or 60A)

C20 (50A or 60A Fuse box)
function

Circuit breaker malfunction


Repair grounding points
contact

Grounding points C2


Poor grounding point contact

NG
NG
OK
OK
OK

Fuse C20 (30A, Fuse box)


Replace the power window
relay

Power window relay
malfunction

NG
Repair an open circuit or a
poor connection of the
connectors between 1
C108
and 2
B8
Voltage between the power
window relay harness side
connector terminal 2
B8
and the ground (Should be
battery v oltage present)

Open circuit or poor connector
contact

NG
OK

Power window relay function

OK
Repair an open circuit or a
poor connection of the
connectors between 1
B8
and 1
B56 and 6 D5

Open circuit or poor connector
contact

NG Voltage between 6 D5 and
the ground (Should be battery
v oltage present)

OK
Repair an open circuit or a
poor connection of the
connectors between 3
D5
and
C2 , or 3 B8 (12
C107 ) and C109

Open circuit or poor connector
contact

NG
Continued on the next page

Voltage between 3
D5 or 3
B8 and the ground



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ELECTRICAL-BODY AND CHASSIS 8A-429
Checkpoint Trouble Cause Countermeasure

Replace the driver seat side
power window & door lock
SW .
SW . malfunction
OK
NGDriver seat side power window
& door lock SW . function
Continued from the previous page



2. Lock switch does not function

Checkpoint Trouble Cause Countermeasure

Replace the driver seat side
power window & door lock
SW .
SW . malfunction
NGDriver seat side power window
& door lock SW . function



3. Window on the driver’s side does not operate

Checkpoint Trouble Cause Countermeasure

Replace the driv er seat side
power window & door lock
SW .
SW . malfunction

NG


Replace the driv er seat side
power window motor

Motor malfunction

NG
OK

Driv er seat side power
window & door lock SW .
function
OK

Repair open circuit or
connector contact

Open circuit or poor connector
contact

NG Continuity between 7 D5
and 1
D1 , or 8 D5 and 2
D1
1. Driv er seat side power window motor function
when connection the motor
connector 1
D1 to the
battery (+) terminal, and 2
D1 to the (-) terminal
(Should the motor rotate in the “UP” direction of the
window)
2. Driv er seat side power window motor function
when connecting the motor
connector 2
D1 to the
battery (+) terminal, and 1
D1 to the (-) terminal
(Should the motor rotate in the “DOW N” direction of
the window)


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8A-434 ELECTRICAL-BODY AND CHASSIS
INSPECTION AND REPAIR






B8
RTW 78ASH002901

Power Window Relay
Check continuity between the relay terminals.
2- 1........................ No continuity
(W hen battery voltage is applied between
3 and 4)
2- 1........................ Continuity





Harness side
D20 D5


Driver’s Side Power Window & Door Lock
Switch
1. Harness Side Connector Circuit
Disconnect the switch connector, and check voltage and continuity between the harness side connector terminals as
shown in the following table.

Terminal No. Wire
color Connecting to Check item Connectin
g terminal Check condition Standard
6 G/R Power window
relay Voltage 6-Ground Starter SW “ON” Approx.
12V
7 BR/R Power window
8 BR/W motor

3 B Ground Continuity 3-Ground - Continuity






Harness side
D10


Front Passenger’s Power Window Switch
1. Harness Side Connector Circuit
Disconnect the switch connector, and check voltage and continuity between the harness side connector terminals as
shown in the following table.

Continuity
-
7-8
Continuity

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ELECTRICAL-BODY AND CHASSIS 8A-435
Terminal No. Wire
color Connecting to Check item Connectin
g terminal Check condition Standard
6 G/R Power window
relay Voltage 6-Ground Starter SW “ON” Approx.
12V
8 BR/R
7 BR/W Power window
motor Continuity 8-7
- Continuity
1,3 B Ground Continuity 1,3-Ground - Continuity






Harness side
D12 D16


Rear Power Window Switch-LH & RH
1. Harness Side Connector Circuit
Disconnect the switch connector, and check voltage and continuity between the harness side connector terminals as
shown in the following tables.


D12 (RR-LH)
Terminal No. Wire
color Connecting to Check item Connectin
g terminal Check condition Standard
6 G/R Power window
relay Voltage 6-Ground Starter SW “ON” Approx.
12V
8 BR/R
7 BR/W Power window
motor Continuity 8-7
- Continuity
3 B
4 B Ground Continuity 3,4-Ground - Continuity
D16 (RR-RH)
Terminal
No. Wire
color Connecting to Check item Connectin
g terminal Check condition Standard
6 G/R Power window
relay Voltage 6-Ground Starter SW “ON” Approx.
12V
8 BR/R
7 BR/W Power window
motor Continuity 8-7
- Continuity
3 B Ground Continuity 3-Ground - Continuity


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8A-436 ELECTRICAL-BODY AND CHASSIS




Harness side
D5

Driver’s Side Power Window Motor
1. Driver’s Side Power Window & Door Lock Switch
Connector Circuit
Disconnect the switch connector, apply the battery voltage (12V) to the harness side connector terminals and check
operation.
Connecting terminals Operation
7 (BR/R) 8 (BR/W ) direction
- + DOW N
+ - UP




D1


2. Driver’s Side Power Window Motor Connector Circuit
Disconnect the switch connector, apply the battery voltage (12V) to the motor side connector terminals and check
operation.
Connecting terminals Operation
1 2 direction
+ - DOW N
- + UP


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