Power Sliding Door System Components
The power sliding door systems consist of the following components:
• | The left rear side door actuator control module |
• | The right rear side door actuator control module |
• | The left power sliding door actuator motor and clutch assembly |
• | The right power sliding door actuator motor and clutch assembly |
• | The left sliding door alarm |
• | The right sliding door alarm |
• | The left sliding door detent switch |
• | The right sliding door detent switch |
• | The left sliding door unlatch actuator |
• | The right sliding door unlatch actuator |
• | The left power sliding door on/off switch |
• | The right power sliding door on/off switch |
• | The left power sliding door overhead console open/close switch |
• | The right power sliding door overhead console open/close switch |
• | The left power sliding door B pillar open/close switch |
• | The right power sliding door B pillar open/close switch |
Power Sliding Door System Controls
The power sliding door systems are controlled by the following components:
• | The left rear side door actuator control module |
• | The right rear side door actuator control module |
• | The left power sliding door actuator motor and clutch assembly |
• | The right power sliding door actuator motor and clutch assembly |
• | The left sliding door detent switch |
• | The right sliding door detent switch |
• | The left power sliding door on/off switch |
• | The right power sliding door on/off switch |
• | The left power sliding door overhead console open/close switch |
• | The right power sliding door overhead console open/close switch |
• | The left power sliding door B pillar open/close switch |
• | The right power sliding door B pillar open/close switch |
• | The remote keyless entry system. |
Power Sliding Door System Description
The power sliding door system(s) can operate correctly only if the power
sliding door is in proper mechanical condition. Any mechanical problems will
affect the power sliding door operation and must be repaired before attempting
to diagnose the power sliding door system. Manually open and close the
power sliding door to determine if the door moves smoothly and without
excessive resistance or binding. The power sliding door must also latch
and unlatch without the use of excessive force. At any time during power
sliding door open or close operation, excessive resistance to the door
movement will cause the power sliding door to stop and reverse the direction
of travel.
The power sliding door will operate only when the power sliding door
on/off switch in the overhead console is in the on position. At anytime during
power sliding door operation the on/off switch may be turned to the off
position and the system will quit any function in process. The power
sliding door will not open unless the transmission shift lever is in
the park position and the door is unlocked. When the sliding door security
lock is in the locked position the power sliding door will not open from
the inside. The power sliding door close function will operate when the
vehicle is in gear. The power sliding door module uses the VSS signal
to determine if the vehicle is moving during a power sliding door close
function. The momentum of the vehicle moving forward adds resistance
to the door closing operation. When the rear side door actuator control
module determines the vehicle is moving forward while closing the door,
current flow through the actuator motor is increased instead of being
reversed. The VSS signal circuit is supplied battery positive voltage
through a resistor then monitored within the rear side door actuator
control module. The VSS signal circuit is then pulsed to ground, or pulled
low by the powertrain control module in relation to vehicle speed. The
sliding door alarm will sound repeated short tones whenever the power
sliding door system is turned on and the door is open while the transmission
is out of park.
When the power sliding door system is on and manual operation of the
power sliding door is detected the rear side door actuator control module
activates the power assist feature. When the power assist is activated
the power sliding door will continue to open or close without any further
manual effort.
The power sliding doors may be operated using the Remote Keyless Entry
System. The keyless entry transmitter will have one OPEN/CLOSE button with
a van symbol on it for each power sliding door. The power sliding door ON/OFF
switches in the overhead console must be in the ON position in order to
operate the power sliding doors using the keyless entry transmitter. When
a right hand power sliding door OPEN/CLOSE function is activated using a
keyless entry transmitter the exterior lights will flash once indicating
the RKE module has received the OPEN/CLOSE command. When activating a left
hand power sliding door OPEN/CLOSE function with the keyless entry transmitter
the exterior lights will not flash.
Rear Side Door Actuator Control Module
The rear side door actuator control module is capable of on-board diagnostic
functions described in
On-Board Diagnostic Features
. The rear side door actuator control module monitors the door
position at all times including during manual operation. After activating
the on-board diagnostic modes, loosing battery voltage, or ground to
the rear side door actuator control module the
Power Sliding Door (PSD) Re-Initialization
procedure must be
performed in order for the rear side door actuator control module to correctly
determine the door position.
Power Sliding Door Actuator Motor
The rear side door actuator control module supplies the power and ground
to operate the power sliding door actuator motor and the actuator clutch.
The direction of the actuator motor rotation is determined by which of
the control circuits is supplied 12 volts and which is grounded. The
rear side door actuator control module varies the current flow through
the actuator motor ground circuit to control the speed of the actuator
motor as necessary. The actuator clutch enables the power sliding door
to be operated manually when de-energized, or by the actuator motor when
energized.
Sliding Door Detent Switch
The rear side door actuator control module uses the sliding door detent
switch to determine when the door is latched, ajar, or open. The power sliding
door detent switch is part of the sliding door latch assembly. The detent
switch signal circuit is supplied 12 volts through a resistor within
the module. When the power sliding door is open and the door switch plate
plungers have made contact with the B-pillar switch plate pads, the detent
switch signal circuit is pulled to ground. When the door latch makes
contact with the striker and the latch moves to the ajar position, the
detent switch signal circuit opens. As the door latch passes from the
ajar position to the latched position the detent switch signal circuit
is briefly pulled to ground.
Optical Sensor
The rear side door actuator control module uses an optical sensor to
monitor the sliding door position at all times. The optical sensor requires
a 5 volt reference and reference return from the rear side door actuator
control module. There are 2 signal circuits from the optical sensor to
the rear side door actuator control module. The optical sensor sends
pulses through both signal circuits to the power sliding door module
whenever the sliding door is in motion. The optical sensor pulses allow
the rear side door actuator control module to calculate the position of
the sliding door at all times. The optical sensor signal circuits switch
from 0.01 to 4.5 volts as the sliding door is moving.