Opel Frontera UBS. Manual - part 767

8D – 498 WIRING SYSTEM

Diagnosis

Quick Chart for Check Points

Trouble mode

Check point

Seat heater on both sides does not heat up

Seat heater on the driver (or passenger)

side does not heat up

Heat (or keep) position does not heat up

1.

2.

3.

Fuse C-2

(15A)

Seat heater SW

Driver side

Passenger

side

Heat unit

Driver side

Passenger

side

Cable

harness

1.   Seat Heater on Both Sides Does Not Heat Up

YES

REPLACE THE FUSE

NO

•

IS FUSE C-2 (15A) NORMAL?

IS   B-26    GROUNDED SECURELY?

YES

GROUND IT SECURELY

NO

•

REPAIR A POOR CONNECTION AT THE CONNECTORS
OR AN OPEN CIRCUIT BETWEEN C-2 (15A) AND 2   B-29
(2   B-31   )

WIRING SYSTEM 8D – 499

2.   Seat Heater on The Driver (Or Passenger) Side Does Not Heat Up

YES

REPAIR A POOR CONNECTION AT
THE CONNECTORS OR AN OPEN
CIRCUIT IN THE CIRCUIT

NO

•

•

•

DISCONNECT THE SEAT HEATER SWITCH CONNECTOR
TURN THE STARTER SWITCH “ON” 
IS THE BATTERY VOLTAGE APPLIED BETWEEN THE SEAT
HEATER SW HARNESS SIDE CONNECTOR 2  B-29
(OR 2  B-31  ) AND THE GROUND?

•

IS THE SEAT HEATER SW FUNCTION NORMAL?

YES

REPLACE THE SEAT HEATER SW

NO

•

•

DISCONNECT THE HEAT UNIT CONNECTOR
IS THERE ANY CONTINUITY BETWEEN THE HEAT UNIT
CONNECTOR 1   T-8   , 3   T-8   AND 4   T-8   (OR 1 T-10  ,
3  T-10  AND 4  T-10  )

YES

REPLACE THE HEAT UNIT

NO

REPAIR A POOR CONNECTION AT THE CONNECTORS OR AN OPEN
CIRCUIT BETWEEN 1  B-29  AND 1   T-8   , 4  B-29  AND 3   T-8   ,
4   T-8   AND GROUND (OR 1  B-31  AND 1  T-10  , 4  B-31  AND 
3  T-10  , 4  T-10  AND GROUND)

3.   Heat (Or Keep) Position Does Not Heat Up

YES

REPLACE THE SEAT HEATER SW

NO

•

IS THE SEAT HEATER SW FUNCTION NORMAL?

REPLACE THE HEAT UNIT

8D – 500 WIRING SYSTEM

Power Seat

General Description

The circuit consists of power seat switch, front tilt
motor (driver’s seat only), rear tilt motor (driver’s seat
only), slide motor and recliner motor.
Power seat switch has a tilt and slide switch and a
recliner switch. The motor built in the seat can be
actuated by operating these switches to move the
seat to desired position, independent of position of
starter switch.

WIRING SYSTEM 8D 

–

 501

Circuit Diagram (RHD)-1

D08RW640

A

H-57

C/B-2

3.0

B/L

3.0

B/L

2.0

R

1

T-2

POWER SEAT SW-RH

1

2.0

B

2.0

B

2.0

B

2.0

B

2.0

B

2.0

B

M

T-1

1

1.25

Y

1.25

Y/B

T-1

T-4

T-4

6

1.25

Y/R

1.25
Y/W

T-1

3

T-1

UP

DOWN

8

T-3

RECLINER
MOTOR & SW
-LH

DRIVER'S SEAT
TILT MOTOR
& SW-FRT

3

B

M

T-1

5

T-1

10

1.25

L/W

FRT

RR

1.25

G/R

SLIDE MOTOR
-LH

T-3

2

T-3

1

2

1

M

T-1

2

1.25

L

1.25

L/B

T-1

T-6

T-6

7

1.25

L/R

1.25

G

T-1

4

T-1

UP

DOWN

9

T-5

DRIVER'S SEAT
TILT MOTOR
& SW-RR

3

T-5

2

T-5

1

2

1

M

T-11

3

1.25

W

1.25
B/W

T-11

6

1.25

BR

1.25

LG

T-11

2

T-11

5

T-11

4

H-57

BODY-CTR

BODY-LH

BODY-RH

4

T-2

2

B-26

B-2

B-18

T-7

1

T-7

2

FRT

RR