lock ISUZU KB P190 2007 Workshop Repair Manual

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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ELECTRICAL-BODY AND CHASSIS 8A-413





Harness side
D20 D5

2. Switch Side Connector Circuit
Remove the switch connector, and check continuity and voltage between the switch connector terminals.
(Connect the (+) terminal of the battery to 1
D5and the
(-) terminal to 3
D5.)
3
D5 - 4 D5.................. Continuity
3 D5 - 5 D5.................. Continuity
(Then, ground 3 D5.)
4
D5.......... Current flow for approx. 1 second
(Disconnect the ground of 14 D20 , and ground 13 D20.)
5
D5.......... Current flow for approx. 1 second




Harness side
D5


3. Door Lock Operation Test

After confirming that there is continuity between the switch
harness side connector terminals 4
D5 and 5 D5,
apply the battery voltage to each of the terminals to conduct
the operation test.
W hen the door lock will not operate, check the door lock actuator for any trouble.
Connecting terminals
5 (L) 4 (L/R)
+ - Unlock
- + Lock
Operation


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8A-414 ELECTRICAL-BODY AND CHASSIS




Switch side
D4

Driver’s Side Door Lock Switch
1. Switch Side Connector Circuit
Check continuity between the switch connector terminals
Terminal No.
SW position 1 2 3
Lock

Unlock




Actuator side
D9


Front Passenger’s Side Door Lock Actuator
1. Actuator Side Connector Circuit
Apply the battery voltage to the actuator connecto
r
terminals to check the operation.
W hen the door lock actuator is checked on the vehicle and there is no continuity, and when the door lock actuator itsel
f
is checked and no trouble is found, check the circuit
between the door lock actuator and the driver seat side
power window & door lock switch for any failure.
Connecting terminals
1 2
+ - Lock
- + Unlock
Operation





Door lock actuator Rear – RH/LH Harness side
D14 D18


Rear Door Lock Actuator -LH & RH
1. Actuator Side Connector Circuit
Apply the battery voltage to the actuator connecto
r
terminals to check the operation.
W hen the door lock actuator is checked on the vehicle and there is no continuity, and when the door lock actuator itsel
f
is checked and no trouble is found, check the circuit
between the door lock actuator and the driver seat side
power window & door lock switch for any failure.
Connecting terminals
1 2
+ - Lock
- + Unlock
Operation



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ELECTRICAL-BODY AND CHASSIS 8A-427

TROUBLESHOOTING
QUICK CHART FOR CHECK POINTS
Check Points



Trouble Mode Power
Window
& Door
Lock
Switch Power Window Switch
Power Window Motor

Driver’s
Side Passenger’s
Side RR-LH RR-
RH Driver’s
Side Passenger’s
Side RR-LH RR-
RH
All windows will not operate
Lock SW does not function Driver’s W indow:
W indow does not operate One-touch operation for
“DOW N” movement will not
operate


W indow operates in only
one direction

Front window on passenger
seat side:
W indow does not operate
W indow does not operate
when operating the driver’s
SW

W indow does not operate
when operating the
passenger’s SW

W indow does operate in
only one direction when
operating the driver’s SW

W indow does operate in
only one direction when
operating the passenger’s
seat side SW


Rear window on left (or right)
side:
W indow on left (or right)
side does not operate

W indow does not operate
when operating the driver’s
SW

W indow does operate in
only one direction when
operating the driver’s SW

W indow does operate in
only one direction when
operating the RR-LH (or
RH) side SW



Cable
Harness
Relay;
Power
Window


SBF9

C20

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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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