Opel Frontera UBS. Service manual — part 1645
8D–258
WIRING SYSTEM
Diagnosis
Quick Chart for Check Points
Trouble mode
Check point
All the doors do not lock
and unlock by door lock
SW-Driver's side
Fuse
(C-18 20A)
FRT Door
lock
(& power
window)
SW-
Driver's
side
Door lock
switch
FRT–
Driver's
side
Door lock
switch
FRT–
Passen-
ger's side
Door lock actuator
FRT–LH
FRT–RH
RR–LH
RR–RH
Tailgate
Cable
harness
All the doors do not get
locked (or unlocked) by
door lock SW-Passenger's
side
FRT door–LH does not get
locked (or unlocked)
FRT door–RH does not get
locked (or unlocked)
RR door–LH does not get
locked (or unlocked)
RR door–RH does not get
locked (or unlocked)
Tailgate does not get
locked (or unlocked)
Door lock does not operate
when operated from the
door lock key SW-Driver's
side
Door lock does not operate
when operated from the
door lock key SW-
Passenger's side
1.
2.
3.
4.
5.
6.
7.
8.
9.
FRT Door
lock
(& power
window)
SW-
Passen-
ger's side
WIRING SYSTEM
8D–259
1.
All The Doors Do Not Lock And Unlock By Door Lock SW-Driver’s Side
YES
•
IS B-18 GROUNDED SECURELY?
YES
REPLACE THE FUSE
NO
•
IS FUSE C-18 (20A) NORMAL?
•
•
DISCONNECT THE DOOR LOCK SW-DRIVER'S SIDE
CONNECTOR
IS BATTERY VOLTAGE APPLIED BETWEEN 10 D-5
AND GROUND?
GROUND B-18 SECURELY
NO
YES
•
IS THERE ANY CONTINUITY BETWEEN 1 D-5
AND B–18
REPAIR A POOR CONNECTION AT CONNECTORS
OR AN OPEN CIRCUIT BETWEEN FUSE C-18 (20A)
AND 10 D-5
NO
YES
REPAIR OR REPLACE THE FRT DOOR LOCK & POWER WINDOW
SW-DRIVER'S SIDE
REPAIR A POOR CONNECTION OF CONNECTORS
OR AN OPEN CIRCUIT BETWEEN 1 D-5 AND
B-18
NO
8D–260
WIRING SYSTEM
2.
All The Doors Do Not Get Locked (Or Unlocked) By FRT Door Lock
SW-Passenger’s Side
YES
•
CHECK THE DOOR LOCKING CONDITION BY
DOOR LOCK SW-DRIVER'S SIDE
•
IS THE CONTINUITY IN THE FRT DOOR LOCK SW-
PASSENGER'S SIDE NORMAL?
NO
REFER TO ITEM NO. 1 IN THIS DIAGNOSIS
YES
•
IS B-1 GROUNDED SECURELY?
NO
REPAIR OR REPLACE THE DOOR LOCK SW-
PASSENGER'S SIDE
YES
REPAIR A POOR CONNECTION OF CONNECTORS OR
AN OPEN CIRCUIT BETWEEN 2 D-30 AND 4 D-14
OR 1 D-30 AND 3 D-14
NO
GROUND B-1 SECURELY
3.
FRT Door–LH Does Not Get Locked (Or Unlocked)
4.
FRT Door–RH Does Not Get Locked (Or Unlocked)
5.
RR Door–LH Does Not Get Locked (Or Unlocked)
6.
RR Door–RH Does Not Get Locked (Or Unlocked)
7.
Tailgate Does Not Get Locked (Or Unlocked)
REPLACE THE DOOR LOCK ACTUATOR
WIRING SYSTEM
8D–261
8.
Door Lock Does Not Operate When Operated From The Door Lock Key
SW-Driver’s Side
YES
•
IS THE CONTINUITY IN THE DOOR LOCK KEY SW-DRIVER’S
SIDE NORMAL?
YES
REFER TO ITEM 1 IN THIS DIAGNOSIS
NO
•
CHECK THE DOOR LOCKING CONDITION OPERATED
BY DOOR LOCK SW-DRIVER'S SIDE
REPAIR OR REPLACE THE SW
NO
•
IS THERE CONTINUITY BETWEEN 3 D-8 AND THE
GROUND?
YES
REPAIR A POOR CONNECTION AT THE
CONNECTORS OR AN OPEN CIRCUIT BETWEEN
3 D-8 AND B-18
NO
REPAIR A POOR CONNECTION AT THE CONNECTORS OR AN
OPEN CIRCUIT BETWEEN 1 D-8 AND 2 D-30 OR 2 D-8
AND 1 D-30
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