Input Signal Displays

1.
Door(s)
- open -
Return: N

Open is displayed if at least one door is open. Closed is displayed if both doors are closed. If required. check wiring to control unit for open circuit or short to ground according to wiring diagram.

2.
Engine compartment
- open -
Return: N

Open is displayed if engine hood is open. Closed is displayed if engine hood is closed. If required. check wiring to alarm control unit for open circuit or short to ground according to wiring diagram.

3.
Luggage compartment
- open -
Return N

Open is displayed if hood is open. Closed is displayed if hood is closed. If required, check wiring to alarm control unit for open circuit or short to ground according to wiring diagram.

4.
Position switch
open: - closed -
closed: - open -
Return N

This display appears if doors are unlocked.

4a.
Position switch
open: - open -
closed: - closed -
Return: N

This display appears if doors are locked. If required. check position switch.

5.
Central locking
system button
- open -
Return: N

Open is displayed if the central locking system button has not been pressed down. Closed display appears if the central locking system button is pressed down.

6.
Glove compartment
- open -
Return: N

Open is displayed if glove compartment is open. Closed is displayed if glove compartment is closed.

7.
Radio
(closed loop)
- closed -
Return: N

The closed-current loop must be closed. The contact is wired to ground across the alarm horn.

- If the closed-current loop is open, check wire from control unit connector II, terminal No. 13, to alarm horn for continuity.
- Check ground connection of alarm horn.

8.
Radio contact
- open -
Return: N

If Radio contact closed is displayed:

- Check insulating strip on radio.
- Check wiring from control unit plug II, terminal 9, to alarm contact at radio bracket or to alarm contact at CD player for short to ground.

9.
Activate
button
- open-
Return: N


NOTE: The spare key is required for checks according to item 9 and 10 since the ignition must be switched off during the diagnostics.


Use the spare key to turn the locks of the driver's and passenger doors into the locking" position one after another. The display must then switch from open" to closed" ("locked").

- If closed 2 ("locked") is displayed in the rest position, check wiring from the lock barrels to the alarm control unit connector II, terminal 1, (terminal 2 for RHD vehicles) for short to ground according to wiring diagram.
- If the display remains set to open" after then lock barrels have been actuated, check wirings for continuity according to wiring diagram.

10.
Deactivate
button
- open -
Return: N

Use the spare key to turn the locks of the driver's and passenger doors into the open" position one after another. The display must then switch from open" to closed" ("locked").

If closed" (locked") is displayed in the rest position, check wiring from the lock barrels to the control unit connector II, terminal 2, (terminal 1 for RHD vehicles) for short to ground according to wiring diagram.

- If the display remains set to ,,open" after the lock barrels have been actuated, check wirings for continuity according to wiring diagram.

11.
Input 1

- open -
Return: N


NOTE: On vehicles (Cabriolet) with rear parcel shelf, the contacts of the rear parcel trays are wired to this input.


- Display ,,open" for inputs that are not wired or if the parcel trays are closed (contacts open).
- Display closed" if at least one parcel tray is open (contact closed). If required, check wiring according to wiring diagram.

12.
Input 2
- open -
Return: N

In standard version, this input is not wired. Auxiliary systems may be wired across this input. Display is ,,open" if input is not wired. If required, check auxiliary system according to manufacturers instructions.

13.
Input 3
- open -
Return: N

Refer to item 12.

14.
Speedo signal
present
Return: N

Display is not present if vehicle is stationary. Display is present if vehicle is moving. If required, check wiring from control unit plug 11, terminal 6, to speedometer according to wiring diagram.

15.
terminal 15
present
Return: N

If display is not present, check wire from alarm control unit plug II, terminal 18, to central electrical system according to wiring diagram.

16.
terminal 16
present
Return: N


NOTE: If present is displayed although the engine is not running, this may be due to a summary fault (refer to item 4, Drive links functional group). In this case, start by remedying this fault.


If display is not present although the engine is running, check wire from control unit plug II, terminal 23, to generator according to wiring diagram.