Opel Frontera UBS. Manual - part 1620

8D–158

WIRING SYSTEM

Diagnosis

Quick Chart for Check Points

Trouble mode

Check point

Both actuators inoperative

Actuator on the left (or right) side inoperative

Actuator on the left (or right) side does not

stop

1.

2.

3.

Fuse C-4 (15A)

Leveling SW

Actuator

Cable harness

LH

RH

WIRING SYSTEM

8D–159

1.  Both Actuators Inoperative

YES

REPLACE THE FUSE

NO

•

IS THE FUSE C-4 (15A) NORMAL?

IS 6  C-16  AND 7  C-16  GROUNDED
SECURELY?

YES

GROUND THEM SECURELY

NO

•

IS THE CONTINUITY IN THE HEADLIGHT
LEVELING SW NORMAL?

•

YES

REPAIR OR REPLACE THE SWITCH

NO

REPAIR A POOR CONNECTION AT THE 
CONNECTORS OR OPEN CIRCUIT BETWEEN
FUSE C-4 AND 6   I-30

2.  Actuator On The Left (Or Right) Side Inoperative

YES

REPAIR OR REPLACE THE ACTUATOR

NO

•

DOES THE ACTUATOR-LH (OR RH) OPERATES
NORMALLY WHEN THE BATTERY IS CONNECTED
TO THE ACTUATOR CONNECTOR TERMINALS?

REPAIR A POOR CONNECTION AT THE 
CONNECTORS OR A OPEN CIRCUIT BETWEEN
FUSE C-4 AND 4  C-77  (OR 4  C-76   )

8D–160

WIRING SYSTEM

3.  Actuator On The Left (Or Right) Side Does Not Stop

YES

REPAIR OR REPLACE THE ACTUATOR
(FAILURE OF THE SENSOR OR A SHORT
CIRCUIT IN THE ACTUATOR)

NO

•

IS THERE CONTINUITY BETWEEN MOTOR
CONNECTOR TERMINALS 4  C-77  AND 6  C-77
(OR 4  C-76  AND 6  C-76  )?

REPAIR OR REPLACE THE ACTUATOR (FAILURE
OF THE RELAY IN THE ACTUATOR)

WIRING SYSTEM

8D–161

Clearance Light, Taillight and

License Plate Light

General Description

The circuit consists of the lighting switch, clearance
light, taillight and license plate light.
All these lights come on when the lighting switch
are turned on with the switch to either clearance or
headlight position.