2004 BMW X5 sensor

DOOR LOCK ACTUATORS
The actuators are sealed, self contained units with no
replaceable parts. The door lock actuators use hall effect
sensors to provide:
• Door lock key position (driver’s door only),
• Door open/closed status.
The driver’s door lock provides the following signals to
the driver’s door switchblock module (PM-FT/SB):
• Lock / Unlock,
• DWA arm/disarm
• Convenience closing and opening signals.
DOOR LOCK POSITION HALL
SENSORS
The Drivers door switchblock
module monitors these key positions
over two wires. The signals are
generated by two hall effect sensors
(Hall Sensor 1 & 2) located in the
actuator.
When the key is turned, a plastic
cylinder in the lock actuator is
simultaneously rotated by the lock
tumbler extension rod.
A magnet is incorporated in the
plastic cylinder, which when rotated
changes the magnetic influence on
the hall sensors.
The presence of a magnet in close
proximity to the sensing surface of
either hall sensor creates a coded
input over the two wires that the GM
uses to determine the key position.
• Magnet in front of sensor, current flow through the sensor is <5 mA (0).
• Magnet rotated away from sensor, current flow through the sensor is >12 mA (1).
Hall sensor 1 & 2 are not included in the front passenger door or rear door actuators.
ZKE - 16
NEUTRAL
- 0 -
MANUAL
LOCK
HALL SENSOR 1
MANUAL
UNLOCK
• DOUBLE LOCK
 DWA ARMED
 CONVENIENCE
CLOSING (hold
until activated). UNLOCK
 DWA DISARMED
 CONVENIENCE
OPENING (hold
until activated).
HALL
SENSOR 2
TUMBLER
EXTENSION ROD
PLASTIC CYLINDER WITH ASYMMETRICAL MAGNET
(Shown in the Lock Position)

DOOR CONTACT HALL SENSOR
Also included in the driver’s door actuator is a third hall effect sensor. This sensor signals
the door open/closed status to the driver’s door switch block module and to the GM via the
P-bus.
The rotary latch plate position
activates the door contact hall
sensor.
• When the door latch is closed,
current flow through the sensor
is <5 mA (0).
• When the door is open, current
flow through the sensor is >12
mA (1).
The passenger side front door and
both rear door lock actuators only
include this hall effect sensor (hall
sensor 3). Hall sensors 1 & 2 are
not required.
ZKE - 17
PM-FT/SB

ZKE - 39
WINDOW ANTI-TRAP DETECTION
The window anti-trap detection feature is only active in the one touch and convenience
close modes of operation. If the window switch is pushed/pulled and held, the Anti-trap
feature will not function.
The rubber pressure guard located at the top
edge of each door frame consists of two contact
strips that close when subjected to pressure.
This provides anti-trap detection and signal
generation to the GM.
When the contact strip closes, the window
immediately (10ms) reverses direction as with
previous anti-trap systems. The contact strip
does not require that the anti-trap feature be
initialized prior to operation.
The pressure sensor finger guard has a
resistance of 3.0 KOhm and it is monitored for
open circuit. When pressed, the monitored
resistance changes to <1KOhm. Faults with the
anti-trap system require that the window switch
be held to close the window.
CONVENIENCE OPENING/CLOSING
The GM and Front Door Switchblock Modules provide the convenience open/close feature
providing control of the power windows (and sunroof) from outside the vehicle with the key
in the driver’s door lock. The FZV provides the same function for the opening only.
• The anti-trap feature is active during convenience closing from the driver’s door lock.
• The convenience open feature provides outside activation of the windows and sunroof
in the same manner.
• If the GM receives a request to operate convenience close or open for more than 110
seconds, the function is deactivated and a fault code is stored.
• The Car Memory Feature can activate and deactivate the Convenience Open Feature
from the FZV’s control.

ZKE - 41
SUNROOF MOTOR/MODULE (SHD)
The combined motor module has a 13 pin
connector for interfacing the switch, and
vehicle harness (power ground and K bus.)
The motor contains two hall effect sensors
that monitor the motor shaft rotation
providing sunroof panel position.
The hall sensors also provide the end limit cut
out function for the SHD once the system is
initialized. The SHD counts the pulses and
cuts the motor out prior to the detected end
run of the sunroof panel.
INITIALIZATION
Initialization is required for the SHD to learn the end positions of the motor's travel. The hall
sensors provide pulses for motor rotation, the SHD counts the pulses and determines
where the panel is by memorizing the stored pulses.
If the system is not initialized, the sunroof will only operate in the tilt up and slide close
positions. Initialize as follows:
• Press and hold the sunroof switch in either the tilt up or slide close positions for 15
seconds.
• The sunroof motor operate momentarily signifying initialization acceptance.
The SHD memorizes the pulses from the hall sensors on the next activation of the motor
by driving the panel to its end run positions. The SHD senses an amperage increase and
determines the end run position. The counted number of pulses is then used as the basis
for calculating the panel position.
ANTI TRAP FEATURE
The anti-trap feature of the sunroof uses a hall sensor to detect obstructions while the
sunroof is closing (pulse frequency slowed down) in the automatic close function. The anti-
trap feature is shut down prior to full closing (4mm from full closed) to allow the sunroof the
seat into the seal.
Additionally, the anti-trap feature is not functional when the switch is held in the manual
close position.

ZKE - 42
SHD SELF DIAGNOSIS
The SHD monitors its operation and stores fault codes if a defect is determined: The SHD
monitors the following conditions:
• SHD motor relays:The relays are checked for sticking contacts (plausibility) and non
functional contacts.
• Hall effect position sensors:The SHD must detect a pulse frequency from the hall
effect sensor(s) during operation.
• Sunroof Switch: The SHD monitors the signal plausibility of the coded signaling from
the sunroof switch.
SUNROOF FAULT RESPONSE CHARACTERISTICS
If a fault occurs with any of these functions, the SHD responds as follows:
• Overrides the end run detection.
• Switches the motor off if the relay contacts stick for more than 500 ms.
• Switches the motor off if pulses are not received.
EMERGENCY OPERATION OF SUNROOF
If the sunroof motor does not respond to the switch signals, the hex key in the trunk lid tool
kit is used to manually turn the motor shaft drive as on previous systems

ZKE - 43
INTERIOR LIGHTING
The GM controls the interior lighting automatically with the status change of several moni-
tored inputs. The lighting can also be manually controlled using the interior light switch.
COMPONENTS
DOOR CONTACTS: The door lock actuators contain a hall effect sensor for the purpose
of monitoring door open/closed status (hall sensor 3 in the driver's door actuator). The hall
effect sensor is located directly behind the rotary latch plate encased in the actuator. The
sensor is activated by the rotary latch plate's position. A change in current flow informs the
General module when a door is opened or closed.
Front seat interior/map light unit: The overhead
front seat interior/map light unit contains a single
main interior light. The light is controlled by the GM
automatically or by momentarily pressing interior
light switch located on the light assembly. The
switch provides a momentary ground signal that the
GM recognizes as a request to either turn the light
on (if off) or turn the light off (if on).
If the switch is held for more than 3 seconds, the GM interprets the continuous ground sig-
nal as a request to turn the interior light circuit off for the Workshop Mode as on previous
systems. The workshop mode is stored in memory and will not come back on even if the
GM is removed from it's power supply and reconnected. The switch must be pressed to
turn the lights back on.
There are two reading/map lights also located in the assembly. Each map light is mechan-
ically controlled by depressing it's corresponding on/off switch. The power supply for the
map lights is supplied by the GM through the Consumer Cut Off circuit.
Rear seat interior light unit:
In the center headliner is an additional interior/reading light unit. This unit contains an inte-
rior light that is controlled with the front interior light and a mechanically switched reading
light on the consumer cut off circuit.
Front footwell lights:
In each front footwell, there is also a courtesy light. These lights are only operated when
the GM provides power to the interior lighting circuit.

ZKE - 45
AUTOMATIC CONTROL FUNCTION
The GM provides 12 volts (linear application providing soft on feature) to the interior light-
ing circuit when the one of the following input signal statuses change:
• Door contact hall sensor active (door opened)
• An Unlock request from the driver's door key lock hall sensors are received. This only
occurs if the ignition switch is off.
• An Unlock request is from the FZV keyless entry system is received via the K bus. This
only occurs if the ignition switch is off as well.
• The ignition switch is switched off and the vehicle exterior lights (LCM III) have been on
for a minimum of 2 minutes prior. This information is provided to the GM via the K bus.
• Active crash signal from the MRS III control module.
• Lock button of FZV key is pressed with the vehicle is already locked (interior search
function).
The GM gradually reduces the full 12 volt power supply (linear reduction providing soft off)
until the lights are off when the following input signal statuses change:
• Immediately after the ignition switch is turned to KL R with the driver's door hall sensor
door contact closed.
• When the vehicle is locked (single or double) with the door contacts closed.
• When the vehicle door contacts are closed. The lights remain on for 20 seconds and
then go to soft off.
• After the interior search function is activated, the lights will automatically turn off (soft off)
after 8 seconds.
• After 16 minutes with a door contact active (open door) and the key off, the lights are
switched off (consumer cutoff function).
• The component activation function of the DIS also has the ability to switch the lights.
The Interior lighting output circuit of the GM is approximately 3.5 amps with all lights on.

ZKE - 46
ANTI-THEFT (DWA) SYSTEM
The GM utilizes the following components to provide the DWA function:
• Door lock hall effect sensor contacts (door open/closed).
• Tailgate lid switch contact (monitored for closed tailgate).
• Hood switch (monitored for closed hood, located under the hood).
• DWA status LED (part of rear view mirror).
• Tilt sensor located in the electrical
carrier forward of the glove box (next
to GM)
• UIS Interior compartment monitoring
sensor (pre wiring in area of installa-
tion in center headliner).
• DWA siren (left cowl area next to mas-
ter cylinder).