Opel Frontera UE. Manual - part 525

8D–240

WIRING SYSTEM

Sunroof

General Description

The circuit consists of the starter switch, sunroof switch,
sunroof control unit, limit switch, and sunroof motor.
When the sunroof switch is turned on, the battery voltage
is applied to the sunroof control unit through the circuit
breaker and the power window relay on the circuit.
Accordingly, when the sunroof switch is set to “Open” or
“Close” position, the open or close relay incorporated into
the control unit is activated to change the rotational
direction of the sunroof motor to open or close the
sunroof.
Also, the operational process (full close 

→

 limit stop 

→

 full

open 

→

 safety stop 

→

 full close) of the sunroof is

controlled by the control unit in accordance with signals
received from the sunroof switch and limit switch.

8D–241

WIRING SYSTEM

Circuit Diagram–1

D08RX269

8D–242

WIRING SYSTEM

Parts Location

D08RWD23–1

Legend

(1) H–32
(2) C–36
(3) Relay & Fuse Box (Instrument Panel)
(4) Sunroof Switch

(5) Sunroof Motor
(6) L–1
(7) Sunroof Control Unit
(8) H–30
(9) B–8

8D–243

WIRING SYSTEM

Diagnosis

Sunroof Inoperative

Step

Action

Value(s)

Yes

No

1

1. Disconnect the sunroof connector L–1.
2. Turn the starter switch on.

Is the battery voltage applied between the harness side
connector L–1 terminal 1 and the ground?

Approx. 12V

Go to Step 3

Go to Step 2

2

Repair an open circuit between the power widow relay
and the sunroof control unit.

Is the action complete?

—

Verify reapir

—

3

Replace the sunroof control unit.

Is the action complete?

—

Verify repair

—

Safety Stop Mechanism Inoperative

Step

Action

Value(s)

Yes

No

1

Replace the sunroof control unit.

Is the action complete?

—

Verify repair

—