Opel Frontera UBS. 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