The power sliding door systems consist of the following components:

The power sliding door systems are controlled by the following components:

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.