Zke 4 - Overview - E36: Overview BMW Z3 E36 рестайлинг

Lock Actuator Operation

The lock actuators contain the electrical motor drive, the lock/ unlock switch contacts and the integral single/double lock limiting switch.

The actuators control the mechanical locking/unlocking function of the doors by sliding two protruding levers. The precise positioning of the levers provides the unlock, single lock and double lock positions of the latch mechanism.

The electro-mechanical operation of all the lock positions are provided in the appropriate articles

Scheme 362

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1. All switch contacts are in their rest positions.
2. The lock actuator/latch mechanisms are in the unlocked position.
3. Raising the door handle or pulling the interior door latch will mechanically open the door.

Principle of Operation

The GM controls the lock heater by providing voltage through a final stage transistor. The heater is switched on by raising the driver's door handle. Prerequisites for heater operation include

1. Vehicle locked.
2. Door handle raised for approximately 3 seconds.

Power is applied to the heater for a maximum of 32 seconds. A timed arrest of 16 minutes is activated after 3 heating attempts. The door lock heater is switched off immediately after unlocking the door.

Scheme 364

All window operation request signals are digital inputs to the GM.

1. Comfort Closing of the windows from the driver's or passenger's lock cylinder when held in the locking position.
2. When the ignition key is in accessory or "ON" press the switch to open or close the windows. Window operation is possible with the ignition switched off until a front door is opened or 16 minutes (maximum) has elapsed.
3. Power protection against a jammed or seized motor is monitored by the hall sensors in the window motors. The GM will interrupt the power to a jammed motor. Rear windows utilize current sensing for shut off.
4. The one-touch function is activated by momentarily pressing the window switch to the second detent. Window travel will cease when the full up or down position has been reached. One-touch can be canceled by pressing the window switch a second time. Anti-trap is provided by the GM monitoring the door glass movement from the hall sensor. If the door glass encounters resistance in the closing direction (>100N.m) the motor will stop and reverse direction for 50 mm of travel.

Scheme 365

1. Central Window Switch: Located in the center console, the switch will raise or lower all four windows at the same time. The window lowering has the one-touch feature.
2. Convertible top operation: Prior to lowering the top, the top control module signals the GM to lower all four windows half way. If the top switch is held after the top is fully lowered, the windows will close fully. If the top switch is held after the top is fully closed the GM will close the windows.
3. With the introduction of the fully automatic convertible top, the comfort close feature of the convertible was also added.

Window Operation specific to the Coupe, Convertible and Z3 Coupe

The design of the E36 Coupe, Convertible and Z3 Coupe required changes in the window operation.

Scheme 366

1. When opening the door, the door glass is automatically lowered by approximately 10mm. When the door latch opens (switch closes), the window will drop. It remains down until the door contact switch opens when the door is closed. The window will then raise back into the door seal.
2. When the door is closed, the glass is raised back into the seal. This allows the glass to drop out of the door seal when opening the door and provides a tighter seal when the door and glass are closed.
3. The window motor contains a Hall sensor for this feature that is monitored by the GM.

The motor incorporates a sunroof module (>96 MY) which receives inputs from the sunroof switch (1) for operation. This sunroof system has the one touch open function.

The sunroof module is linked to the GM for two purposes

Scheme 367

1. The comfort closing feature when the key is held in the lock position in one of the door lock cylinders.
2. Unloader signal. This signal (30h) informs the sunroof motor module to stop running the sunroof motor when the GM receives a start signal (KL 50).

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The interior light switch is a rocker switch that will activate the interior lights "On or Off" (left/right positions). When the light switch is in the center position (automatic)

1. If the interior lights are switched "ON" by the button with the ignition switched ON , the interior lights will remain on until they are switched off by the button.
2. If the interior lights are switched "ON" when the ignition is switched OFF , the lights will remain on for 16 minutes (consumer cutout).
3. Locking the vehicle from the outside will immediately switch off the interior lights.

The ON/OFF conditions for the interior lights in the automatic mode are as follows

ON Conditions

1. Door Open.
2. Switching off ignition after exterior lights have been switched off.
3. Crash Alarm/MRS input.

OFF Conditions

1. All doors closed with ignition on.
2. All doors closed with ignition off after 20 seconds.
3. 20 seconds after switching off ignition with lights off.
4. 8 seconds after switching the ignition off.
5. 16 minutes with door(s) open.
6. When doors are locked.

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1. The GM in 3 Series convertibles provide power to the manual circuit of the interior lights.
2. Through the production range there are minor changes in the lighting fixtures. For example: the additional map light switch on rear seat interior lights on 1997 models. Always refer to the specific appropriate article for the vehicle being serviced.