Opel Frontera UBS. Manual - part 709

8D–266

WIRING SYSTEM

Diagnosis

All Windows Do Not Operate

STEP

ACTION

VALUE(S)

YES

NO

Is the fuse C–4 normal?

Is the circuit breaker C/B–2 normal?

Is B–19 grounded securely?

Disconnect the power window relay connector B–37.
Is the battery voltage applied between harness side
connector B–37 terminal 2 and the ground?

Repair an open circuit between the circuit breaker C/B–2 and
connector B–37 terminal 2.
Is the action complete?

Turn the starter switch on
Is the battery voltage applied between harness side
connector B–37 terminal 1 and the ground?

Repair an open circuit between the fuse C–4 and connector 
B–37 terminal 1.
Is the action complete?

Is there continuity between harness side connector B–37
terminal 3 and the ground B–19?

Repair an open circuit between connector B–37 terminal 3
and the ground B–19.
Is the action complete?

–

–

–

Approx. 12V

–

Approx. 12V

–

–

–

Go to
step 2

Go to
step 3

Go to
step 4

Go to
step 6

Go to
step 4

Go to
step 8

Go to
step 6

Replace
the relay

Verify
repair

Replace
the fuse

Replace
the circuit
breaker

Ground it
securely

Go to
step 5

–

Go to
step 7

–

Go to
step 9

–

1

2

3

4

5

6

7

8

9

WIRING SYSTEM

8D–267

Window On The Driver’s Side Does Not Operate

STEP

ACTION

VALUE(S)

YES

NO

Is B–18 grounded securely?

Is there continuity between harness side connector D–5
terminal 1 and the ground B–18?

Repair an open circuit between connector D–5 terminal 1
and the ground B–18.
Is the action complete?

Turn the starter switch on.
Is the battery voltage applied between harness side
connector D–5 terminal 7 and the ground?

Repair an open circuit between connector B–37 terminal 4
and connector D–5 terminal 7.
Is the action complete?

Connect the battery positive terminal with harness side
connector D–5 terminal 5 or 6, and the negative terminal with
harness side connector D–5 terminal 6 or 5.
Does the motor operate?

1. Disconnect the front power window motor–RH connector 

D–2.

2. Connect the battery positive terminal with the motor side

connector D–2 terminal 1 or 2, and connect the battery
negative terminal with the motor side connector D–2
terminal 2 or 1.

Does the motor operate?

Repair an open circuit between the front power window &
door lock switch–RH and the front power window motor–RH.
Is the action complete?

–

–

–

Approx. 12V

–

–

–

–

Go to
step 2

Go to
step 4

Go to
step 2

Go to
step 6

Go to
step 4

Replace
the front
power
window &
door lock
switch–RH

Go to
step 8

Verify
repair

Ground it
securely

Go to
step 3

–

Go to 
step 5

–

Go to
step 7

Replace
the motor

–

1

2

3

4

5

6

7

8

8D–268

WIRING SYSTEM

Window On The Front Passenger’s Side Does Not Operate

STEP

ACTION

VALUE(S)

YES

NO

Is B–1 grounded securely?

Disconnect the front power window & door lock switch–LH
connector D–14.
Is there continuity between harness side connector D–14
terminal 7 and the ground B–1?

Repair an open circuit between connector D–14 terminal 7
and the ground B–1.
Is the action complete?

Turn the starter switch on.
Is the battery voltage applied between harness side
connector D–14 terminal 5 and the ground?

Repair an open circuit between connector B–37 terminal 4
and connector D–14 terminal 5.
Is the action complete?

Connect the battery positive terminal with harness side
connector D–14 terminal 10 or 1, and connect the battery
negative terminal with harness side connector D–14 terminal
1 or 10.
Does the motor operate?

1. Disconnect the front power window motor–LH connector 

D–11.

2. Connect the battery positive terminal with the motor side

connector D–11 terminal 1 or 2, and connect the battery
negative terminal with the motor side connector D–11
terminal 2 or 1.

Does the motor operate?

Repair an open circuit between the front power window &
door lock switch–LH and the front power window motor–LH.
Is the action complete?

–

–

–

Approx. 12V

–

–

–

–

Go to
step 2

Go to
step 4

Go to
step 2

Go to
step 6

Go to
step 4

Replace
the front
power
window &
door lock
switch–LH

Go to
step 8

Verify
repair

Ground it
securely

Go to
step 3

–

Go to
step 5

–

Go to
step 7

Replace
the motor

–

1

2

3

4

5

6

7

8

WIRING SYSTEM

8D–269

Rear Window On The Left (or Right) Side Does Not Operate

STEP

ACTION

VALUE(S)

YES

NO

1. Disconnect the rear power window switch–LH connector 

D–22 or the rear power window & door lock switch–RH
connector D–27.

2. Turn the starter switch on.
Is the battery voltage applied between harness side
connector D–22 terminal 4 and the ground, or harness side
connector D–27 terminal 4 and the ground?

Repair an open circuit between connector B–37 terminal 4
and connector D–22 terminal 4 or connector D–27 terminal 4.
Is the action complete?

Is there continuity between harness side connector D–22
terminal 3 and the ground, or harness side connector 
D–27 terminal 3 and the ground?

Repair an open circuit between connector D–22 terminal 3 or
connector D–27 terminal 3 and the ground.
Is the action complete?

Connect the battery positive terminal with harness side
connector D–22 terminals 5 or harness side connector D–27
terminal 5, and connect the battery negative terminal with
harness side connector D–22 terminal 6 or harness side
connector D–27 terminal 6.
Does the motor operate?

1. Disconnect the rear power window motor connector D–20

or D–25.

2. Connect the battery positive terminal with motor side

connector D–20 or D–25 terminal 1 or 2, and connect the
battery negative terminal with the motor side connector 
D–20 or D–25 terminal 2 or 1.

Does the motor operate?

Repair an open circuit between the rear power window
switch and the rear power window motor.
Is the action complete?

Approx. 12V

–

–

–

–

–

–

Go to
step 3

Go to
step 1

Go to
step 5

Go to
step 3

Replace
the rear
power
window
switch–LH
or –RH

Go to
step 7

Verify
repair

Go to
step 2

–

Go to
step 4

–

Go to
step 6

Replace
the motor

–

1

2

3

4

5

6

7