ISUZU KB P190 2007 Workshop Repair Manual

ELECTRICAL-BODY AND CHASSIS 8A-403

CIRCUIT DIAGRAM 4JJ1-TC/4JK1-TC (LHD) G.EXP STD TYPE



RTW 78AXF023201

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8A-404 ELECTRICAL-BODY AND CHASSIS

CIRCUIT DIAGRAM 4JJ1-TC/4JK1-TC (LHD) G.EXP G.EXP TYPE




RTW 78AXF023301

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ELECTRICAL-BODY AND CHASSIS 8A-405

CIRCUIT DIAGRAM 4JH1 (LHD) STD TYPE


RTW 78AXF013801

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8A-406 ELECTRICAL-BODY AND CHASSIS

CIRCUIT DIAGRAM 4JH1 (LHD) WITHOUT ANTI THEFT G.EXP TYPE

RTW 78AXF013701

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ELECTRICAL-BODY AND CHASSIS 8A-407
TROUBLESHOOTING
QUICK CHART FOR CHECK POINTS
Check Points Fuse C21
(20A) Power
Window &
Door Lock Switch Door
Lock
Switch Key Cylinder
switch Door Lock Actuator

Cable


Trouble Mode Driver’s
side Driver’s
side D/S P/S Passen
ger’s side RR-RH RR-LH
Harness
1. All the doors do not
lock and unlock
2. All the doors do not get locked (or
unlocked)

3. Driver’s side door
does not get locked
(or unlocked)

4. FRT passenger’s side
door does not get
locked (or unlocked)

5. RR door-RH does not
get locked (or
unlocked)

6. RR door-LH does not
get locked (or
unlocked)

7. Door lock does not
operate when
operating from the
driver’s seat side


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8A-408 ELECTRICAL-BODY AND CHASSIS
1. All the doors do not lock and unlock

Checkpoint Trouble Cause Countermeasure


Reinstall or replace the fuse
No. C21 (20A)

Poor fuse contact or blown

NG


Repair grounding point contact

Grounding point C2


Poor grounding point contact


Repair open circuit or
connector contact
Voltage between the driver’s
side power window & door
lock SW harness side
connector terminal 1
D5
and the ground (Should be
battery voltage present)

Open circuit or poor connector
contact

NG
NG
OK
OK
OK

Fuse No. C21 (20A, Fuse box)


Repair open circuit or
connector contact

Open circuit or poor connector
contact

NG
Replace the driver’s side
power window & door lock
SW .
Driver’s side power window &
door lock SW . function

SW . malfunction

NG
OK
Continuity between 3 or 4

D4 or 2 D24 and
C2




2. All the doors do not get locked (or unlocked)


Repair open circuit or
connector contact

Open circuit or poor connector
contact

NG

Replace the driver’s side
power window & door lock
SW .
Driver’s side power window &
door lock SW . function

SW . malfunction

NG
OK
Continuity between the driver’s
side power window & door
lock SW harness side
connector terminals 14
D20
and 6
D20


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ELECTRICAL-BODY AND CHASSIS 8A-409
3. Driver’s side door does not get locked (or unlocked)

Checkpoint Trouble Cause Countermeasure

Replace the door lock SW .Door lock SW . functionSW . malfunction
NG



4. FRT passenger’s side door does not get locked (or unlocked)

Replace the FRT passenger’s
side door lock actuatorFRT passenger’s side door
lock actuator functionActuator malfunction
NG



5. RR door-RH does not get locked (or unlocked)

Replace the RR door lock
actuator-RHRR door lock actuator-RH
functionActuator malfunction
NG



6. RR door-LH does not get locked (or unlocked)


Replace the RR door lock
actuator-LH

RR door lock actuator-LH
function

Actuator malfunction

NG



7. Door lock does not operate when operated from the driver’s seat side


Repair grounding point
C2
contact

Poor grounding point contact

NG


Replace the door lock position
SW .

Continuity between the door
lock position SW . side
connector terminals 1
D4 , 5
D4 and 3 D4 or 1 D24
and 2
D24 and 4 D4
when the SW is locked and 2
D4 and 4 D4 , 6 D4
and 3
D4 or 3 D4 and 2
D24 when the SW . unlocked

SW . malfunction

NG
OK

Grounding point
C2 (RHD),
C109 (LHD)




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8A-410 ELECTRICAL-BODY AND CHASSIS
REMOVAL AND INSTALLATION


This illustration is based on 2 doors and RHDRTW 780SH002601








DRIVER’S SEAT SIDE POWER WINDOW
& DOOR LOCK SWITCH
Removal
1. Disconnect the battery ground cable.
2. Removes the screw in pull cup with the screwdriver.
3. Remove the switch bezel by pushing the spring with the tip of a screwdriver.
4. Disconnect the connector.

ATTENTION:
When removing a switch bezel lift from the front of the
bezel.
It follows the front with the screwdriver.
The clip can break when lifting from the rear of the bezel.



Installation
To install, follow the removal steps in the reverse order.



DRIVER’S SIDE DOOR LOCK SWITCH
Removal
1. Door Lock ASM
• Refer to the removal steps of the DOORS in section 10
“BODY”.
2. Door Lock Switch



Installation
To install, follow the removal steps in the reverse order.


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ELECTRICAL-BODY AND CHASSIS 8A-411












FRT PASSENGER’S SIDE DOOR LOCK
ACTUATOR
Removal
1. Door Lock ASM
• Refer to the removal steps of the DOORS in Section 10
“BODY”.
2. Door Lock Actuator • Remove the door lock switch fixing bolts.
• Disconnect the door lock link rod.
• Disconnect the door lock switch connector.

Installation
To install, follow the removal steps in the reverse order.











RR DOOR LOCK ACTUATOR-LH & RH
Removal
1. Door Lock ASM
• Refer to the removal steps of the DOORS in section 10
“BODY”.
2. Door Lock Actuator • Remove the actuator fixing bolts.
• Disconnect the door lock link rod.
• Disconnect the actuator connector.

Installation
To install, follow the removal steps in the reverse order.



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8A-412 ELECTRICAL-BODY AND CHASSIS
INSPECTION AND REPAIR







Harness side
D20 D5


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

Terminal No. Wire
color Connecting to Check item Connectin
g terminal Check condition
Standard
Door lock SW
Driver’s Lock Continuity
(Lock) side door
Unlock No continuity
Door lock SW
Driver’s Lock No continuity
(Unlock) side door
Unlock Continuity
3 (D5) L/R Ground Continuity 3-Ground
- Continuity

4 (D5)
L/R Door lock
actuator (Lock) (Resistance)

4-5
- Continuity
There is some
resistance

5 (D5)
L Door lock
actuator
(Unlock)
5-4
- Continuity
There is some
resistance
1 (D5) LG/W Fuse
C21 (20A) Voltage 1- Ground
- Battery voltage
(Approx. 12V)
14-Ground
L/R
14 (D20)
13-Ground
L/Y
13 (D20)

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