Part One
Power Sliding Doors System Description
Back Ground
The power sliding door system has a number of electrical and mechanical components that must work in synchronization with each other for the doors to open and close properly.
Components
Power Sliding Door Control Unit (behind rear inner trim panel)
This unit receives inputs from the switches and sensors in the sliding door system and from B-CAN. It controls the slide motor, the release actuator, and the closer motor to control the movement of the doors. It also controls the sliding door buzzer and indicator.
Power Slide Door Pulse-The power slide door pulse is integrated into the Power Sliding Door Control Unit. It generates pulses that are sent to the power sliding door control unit as the sliding door moves. The power sliding door control unit uses these pulses to determine the speed and position of the door.
Power Slide Motor (built into the power sliding door control unit)
This motor moves the door in both directions. It includes an electromagnetic clutch and a cable tension adjuster.
Electromagnetic Clutch-This clutch engages the motor with the slide door cables.
Power Sliding Door Latch Remote Control Assembly
This assembly operates cables that release the front and rear slide door latches, pulls the inner handle lower roller latch release linkage, triggers the 4 remote control switches and activates the fail-safe lever cable. The assembly includes the remote control switches, the door lock actuator, the release actuator, the door lock, the child-proof lock, and the inside door handle linkage.
- Remote Control Switch 1 (A)-This switch signals the power sliding door control unit that the outside door handle is being pulled toward the open direction. The remote control switch 1 operation is the same when the child lock is in to ON or OFF position. However, when the door handle is in the open position, it signals that the door handle is being pulled toward the close direction.
- Remote Control Switch 2 (B)-This switch signals the power sliding door control unit that the inside door handle is being pulled toward the close position.
- Remote Control Switch 3 (C)-This switch signals the power sliding door control unit that the inside door handle is being pulled toward the open position. However, if the child lock is engaged, and the door is fully closed or ajar with ratchet switch input, remote 3 is cancelled to prevent opening the door from the middle row.
- Remote Control Switch 4 (D)-This switch indicates whether the child lock is ON or OFF position.
Power Sliding Door Release Actuator (built into the power sliding door latch remote control assembly)
This assembly operates the lower roller latch cable when the inner handle lower roller latch release linkage is pulled by the remote control assembly, the outer handle cable is pulled by the outer handle, or the release actuator is operated.
Release Actuator (A)- When the dashboard switch, the remote transmitter, B-pillar power sliding door switches, or either the inside or outside door handle is used to open or close the door, the release actuator rotates the outer handle crank assembly linkage, pulling the lower roller latch cable.
Power Sliding Door Rear Latch
This assembly mechanically latches the rear of the door in the closed position. It contains the closer motor, the half-latch/full-latch switch, the base position switch, ratchet switch, and the fail-safe lever.
- Closer Motor (A)-This motor moves the latch from the half-latched to the fully latched position to finish closing the door.
- Half-Latch Switch/Full-Latch Switch (B)-These switches signal to the power sliding door control unit that the door has reached the half-latched position and the fully latched position when the door is fully closed.
- Base Position Switch (C)-This switch signals to the power sliding door control unit that the closer motor is in its normal or off position.
- Ratchet Switch (D)-The ratchet switch is also used for inner handle open operation from the full closed position. When the child lock is enabled the ratchet switch will not be activated while the door is fully closed because the rear latch cable between the remote control assembly and the rear latch is not engaged.
- Fail-safe Lever (E)-This lever mechanically disconnects the closer motor from the door latch. See Emergency Stop Operation.
Door Lower Roller Assembly and Sliding Door Half Stopper Assembly (attached to lower front of slide door)
This assembly is attached to the lower roller's bracket. The lower roller latch latches the door in the open position when it is fully opened. The lower roller stopper stops the door at the "open window" position for safety. It contains the lower roller latch and the lower roller lever as well as the lower rollers.
Sliding Door Power Window Regulator Assembly
This assembly moves the sliding door window in the window run channels, actuates the sliding door window position switch, and pulls the lower roller stopper cable. It contains a power window motor, position plate, and sliding door window position switch.
Sliding Door Window Position Switch (A)-This switch signals the power window control unit that the window is open at 108 mm (4.3 in) or more.
Front Latch Assembly
This assembly mechanically latches the front of the door in the closed position.
Rear Latch Cable
This cable is routed between the remote control assembly and the rear latch assembly. It is pulled by the remote control assembly and releases the rear latch to open the door.
Front Latch Cable
This cable is routed between the remote control assembly and the front latch assembly. It is pulled by the remote control assembly and releases the front latch to open the door.
Fail-Safe Lever Cable
This cable is routed between the remote control assembly and the rear latch assembly. It is pulled by the remote control assembly and activates the fail-safe lever.
Lower Roller Latch Cable
This cable is routed between the outer handle crank and the lower roller latch assembly. It is pulled by the outer handle crank and releases the lower roller latch.
Switches and Indicators
Main Switch
This switch, when it is OFF, turns off the door's power slide function, and disables the sliding door buzzer. The doors can only be opened and closed manually. The closer function continues to operate once the door is manually moved to the half-latched position.
Power Sliding Door Switch
There is a rocker switch for each door located on the dashboard and in the B-pillar. Each switch signals its respective power sliding door control unit that the driver or the middle row passenger wants to open or close that door.
Sliding Door Indicator (without multi-information display)
This indicator normally comes on for about 2 seconds when the ignition switch is turned to ON (II). If it comes on at any other time, it is signaling the driver that there is a problem with the power sliding door system. The door with the problem will no longer operate electrically, only manually. The technician can use this indicator to read out trouble codes stored in the power sliding door system.
NOTE: When equipped with a multi-information display (MID), the MID is used to inform the driver of a fault in the power sliding door system.
Sliding Door Buzzer
This buzzer alerts the driver and occupants that the sliding door system requires attention for safety reasons.
Basic Operation
Opening a Door with the Power Sliding Door Switch
To open a door electrically:
- The main switch must be ON.
- If the ignition switch is ON (II), the shift lever must be in P or the foot brake must be ON or parking brake must be ON and the vehicle speed, including the wheel speed sensor, indicated zero.
- The door must be unlocked, and the fuel fill door must be closed (left door only).
- If the Power Sliding Door Switch is used, the switch sends a signal to the power sliding door control unit for that door.
- The power sliding door control unit sends a signal to the release actuator to unlatch the door.
- The release actuator rotates the linkage on the outer handle crank which pulls the front and rear latch cables. This releases the front and rear latches, mechanically unlatching the door.
- The power sliding door control unit then activates the electromagnetic clutch and starts the slide motor. The slide motor moves the cables that move the door.
- The power slide door motor pulse senses the movement of the slide motor, and sends pulses to the power sliding door control unit. The control unit uses these pulses to judge the speed and the position of the door.
- When the power sliding door control unit judges that the door is fully open, it turns off the slide motor and the electromagnetic clutch.
- The lower roller latch, located in the lower roller assembly, secures the door in the fully open or open window position.
Opening a Door with the Power Sliding Door Transmitter
To open a door electrically:
- The Main switch must be ON.
- If the ignition switch is ON (II), the shift lever must be in P or the foot brake must be ON or parking brake must be ON, and the vehicle speed, including the wheel speed sensor, indicated zero.
- The fuel fill door must be closed (left door only)
- The Immobi/Keyless unit sends an open message to the power sliding door control unit for that door
- If the slide door is locked, the power slide door control unit sends a message to the MICU to unlock the slide door and the front door on the same side of the vehicle.
- When the door is detected as unlocked, the power sliding door control unit sends a signal to the release actuator to unlatch the door.
- The release actuator rotates the linkage on the outer handle crank which pulls the front and rear latch cables. This releases the front and rear latches, mechanically unlatching the door.
- The power sliding door control unit then activates the electromagnetic clutch and starts the slide motor. The slide motor moves the cables that move the door.
- The power slide door motor pulse senses the movement of the slide motor, and sends pulses to the power sliding door control unit. The control unit uses these pulses to judge the speed and position of the door.
- When the power sliding door control unit judges that the door is fully open, it turns off the slide motor and the electromagnetic clutch.