System With Deadlock (not USA/CDN)

General
The central locking system allows all the doors, trunk/tailgate and tank cover to be locked or unlocked simultaneously. The central locking system can be operated by a key in either of the front doors and the trunk/tailgate.

The central locking system is regulated by a central locking relay and a deadlock relay located in the electrical distribution box in the passenger compartment. If the voltage supply to the central locking system is cut, the doors and tailgate can still be locked and unlocked mechanically using a key or the lock buttons and handles inside the car. The tank cover can be opened via an emergency latch located under a separate cover in the upper front section of the luggage area panel.

The central locking system with integrated deadlock makes it more difficult and inconvenient to enter the car since the door locking knobs and handles inside the car are immobilized in the locked position, blocking them and rendering them useless from inside the car if the car's own key was not first used to deactivate the dead-lock. The central locking system also controls the alarm system if fitted to the car. When fault tracing the alarm system, please refer to Anti-Theft Alarms.

Locking With The Deadlock






If the central locking system features a deadlock, there are in practice two locking settings, one for activating the central locking system and one for activating the deadlock. To activate the deadlock, the key is turned a further quarter turn after the central lock is activated. At about 60° of a turn, the key meets with greater resistance in the lock up to 90°, when the central locking system engages the deadlock. It is not possible to activate the deadlock if the ignition is switched on or if any door is open. When the deadlock is activated, the central locking relay sends a control signal to the deadlock relay which in turn activates the central lock motors, to engage the various deadlocks.

If there is no voltage supply to the central locking system when the lock units are in the deadlock position, only the driver's door can be unlocked with a key. The central locking system also controls the activation and deactivation of the alarm, if fitted. Unlike the central locking system without deadlock, which activates the alarm when the key is turned 60°, the alarm on a car equipped with deadlocks is activated only when the key is turned a full 90° to the deadlock position. When fault tracing the alarm system, please refer to the Anti-Theft Alarm Section.

NOTE: It is not possible to either activate the alarm or engage the deadlock position from the trunk/tailgate.

Central Locking Unit In Trunk/Tailgate:

Central Lock Units

The central locking system features central lock units in the doors, trunk/tailgate and tiller cover. The following components are unique to the central lock units:
Central locking motors.
Operating switch fined in the trunk/tailgate and front door central lock units, for activation of the central locking system with the key.
Switch for Interior lighting and courtesy lights.
AT-switches fined in front door central locks for activation of the alarm and deadlock with the key.
Deadlock switch fined in the door central locks for activation of deadlock. The central lock for the trunk/tailgate does not feature an AT or deadlock switch.


Central Locking Motors






The central locking motors in the doors, trunk/tailgate and tiller cover are connected in parallel. Activation at the central locking motors takes place via a short 12 V pulse lasting 0.7 seconds, transmitted tram the central lacking relay.

When the deadlock is engaged, a second short 12 V pulse lasting 0.3 seconds is transmitted tram the deadlock relay, to activate the door central lacking motors which block the control rod with the help at the integrated lack lip.

The central locking motor cables are grounded when the central lock motor is on standby to avoid accidental activation.


WARNING! If the central lock motor is in the deadlock position when there is a fault in the central locking system, it has to be reversed to unblock the locking rod.


Deadlock Switch






The deadlock switch consists of a 2-way alternating microswitch which is integrated into the central locking motors in the front and rear door central lack units. The deadlock switch features one wire far the output signal directly connected to the central locking motor coils and two wires for incoming signals tram the central locking relay and deadlock relay. The deadlock relay and central lacking relay transmit brief 12 V pulses for locking and unlocking.


Operating Switch, Central Locking

The front door central lock units feature operating switches fitted beside the inner cam disc, while the trunk/tailgate central lock unit's operating switch is integrated into the central locking motor.

Central Locking Switch Beside Inner Cam:

Central Locking Switch Intergated In Lock Motor:

The operating switch is a 2-way alternating type with one grounded input signal wire and two output wires which activate the central locking relay with a ground signal for locking and unlocking respectively. The front door operating switch can be activated mechanically by the internal cam disc when locking and unlocking via the door key, interior lock button or interior door handle.

The trunk/tailgate operating switch is activated mechanically by the central locking motors locking rod when locking or unlocking via the door key or electrically upon activation via the central locking relay. When the front door operating switches are activated, there is an alternating switch between the signal lead and constant ground signal, depending on the position of the internal cam disc.

When the trunk/tailgate operating switch is activated, there is an alternating switch between the signal lead and constant ground signal, depending on the position of the central locking motors control rod. The control rod activates the operating switch when the latter is halfway through the control rod's total sphere of movement, roughly at 40° turn of the door key.

When the position of the operating switch is altered, a ground signal Is transmitted to the central locking relay which in turn activates all the central locking motors with a short 12 V pulse to complete the unlocking or locking action and to shift the operating switches to the unlocked or locked position respectively. When shifting to the deadlock setting, the position of the operating switch is not affected.



Switch For Passenger Compartment, Courtesy Lights And Door-Warning Light

The switches for the passenger compartment, courtesy light and door-warning light are 2-stage micro- switches located in the central lock units, which are activated by the position of the central lock unit's latch. The switch at the front door's central lock unit consists of dual microswitches. When the door is open, both microswitches are grounded, one controls the interior lights and the other the courtesy lights and door-warning lights.






The rear door central lock unit has a single microswitch which controls both interior lighting and the door-warning lights. If either of the front doors is open, the rear door warning lights will therefore also come on. When the door is opened or shut, control signals are sent from the interior light microswitch to the central locking relay, which regulates the interior lighting functions.

The switch at the trunk/tailgate's central lock unit consists of a microswitch which only controls the cargo area lighting, so it does not send any signals to the central locking relay.

Trunk/Tailgate Lock Unit Signals Only Central Locking Relay:

The switches can be blocked to allow the interior, courtesy and door-warning lights to remain off when the doors are opened, by using a screwdriver to move the central lock unit's latch upwards to the locked position.

AT-Switch

Deadlock Switch Located At Outer Cam Disc:

The AT switch consists of a 2-way alternating micro-switch and it is only fitted to the two front door central lock units, on the outer cam discs.
The AT switch activates or deactivates the car's alarm and it is affected only when the key is used to engage the deadlock setting.

When engaging the deadlock setting, the AT switch is activated when the key is turned approx. 70°, sending a ground signal to the central locking relay which in turn sends one control signal to the deadlock relay for locking and another control signal to the alarm relay to activate the alarm.

For unlocking, the AT switch is activated after the key is turned just 20°, when just one control signal is sent to the alarm relay for deactivation of the alarm. The AT switch does not affect the central locking system's functions. When fault tracing the alarm system, see Anti-Theft Alarm.

Service Security Setting






The trunk/tailgate central lock unit, which can only be operated mechanically by the master key and wallet key, features a service security setting whereby the central lock unit is bypassed by the central locking system. In the service security setting, the central locking motor is activated but its control rod is detached from the central lock unit's locking mechanism, so it does not affect the mechanism. Locking to service security setting:

Turn key about 90° anti-clockwise Pull the key out horizontally
Unlocking from the deadlock position:

Turn the key about 120° clockwise a, the key will automatically return to the vertical position . Pull out the key vertically.


Central Locking Relay






The central locking relay is actually a control module consisting of a microprocessor, two relay coils for voltage supply to the central locking motors and a relay coil for voltage supply to the interior lighting. The central locking relay receives control signals and activates the car's central locking system, interior lighting and alarm relay.

Central locking relay connections:
ATR 12 V pulsed input signal from receiver for remote- controlled central locking or optional alarm.
15 12V input signal from ignition lock, key in position II.
30 Incoming voltage supply (30) from fuse box position 11/6:1.
31 Ground.
85A Grounded input signal from operating switch, driver's door, when unlocking.
85B Grounded input signal from operating switch, passenger's door, when unlocking.
85R Grounded input signal from operating switch, trunk/tailgate, when unlocking.
86 Grounded input signal from operating switches in front doors and trunk/tailgate when locking.
87 12 V output signal to central locking motors for 0.7 seconds when locking.
88 12 V output signal to central locking motors for 0.8 seconds when unlocking.
AL1 Grounded and coded output signal to deadlock relay when conditions for engaging deadlock are met.
AL2 Output signal to alarm relay. 5 V constant output signal when the alarm is activated and grounded constant output signal when the alarm is deactivated.
AT Grounded input signal from central lock units in front doors.
LA Grounded output signal to roof lights.
T Grounded input signal from door switches for roof lights.

Deadlock Relay






The deadlock relay is a control module consisting of a microprocessor and two relay coils for voltage supply to the central locking motors on the left and right sides respectively.

The deadlock relay receives control signals from the central locking relay and activates the car's central locking system when it Is set to the deadlock setting. If the central locking relay Is faulty, It is possible to bridge the connection from ground position 31 to positions MBL and MBH. The system then functions as a central locking system without a deadlock, although the alarm will continue to function as though the deadlock relay was still connected.

Deadlock relay connections:
30 Input voltage supply (30) from fuse box position 11/6:1.
31 Ground.
AL1 Grounded and coded input signal from central locking relay when conditions for locking to dead- lock setting are met.
MBH 12 V output signal to right side central locking motors for 0.3 seconds.
MBL 12 V output signal to left side central locking motors for 0.3 seconds.


WARNING! It is vital that the deadlock relay is fitted when the central lock is operated, since: the deadlock relay's grounded outputs slow down the central locking motors so that they are not activated to the deadlock setting during normal locking. The deadlock relay grounds the central locking motors during unlocking from the deadlock position to normal locked position.