Sunroof / Moonroof: Description and Operation

ROOF OPENING PANEL

The roof opening panel is an electronically operated panel that can be opened, closed or vented (tilted) by the roof opening panel switch. The switch has two detents for opening, two detents for closing and a center position for venting operations. Manual open and close are provided by the motor as long as the switch is held in the first detent. Express open or express close will occur if the switch is moved to the second detent, at which time it may be released. Proportional tilt-up occurs when the vent/tilt switch is pressed while the roof opening panel is in the fully closed or tilt range. Proportional tilt-up stops when the vent/tilt switch is released. One-touch tilt occurs when the vent/tilt switch is pressed and released while the moonroof is in fully open or slide. When commanded, the roof opening panel will express close then move to the full vent position.

PRINCIPLES OF OPERATION

Voltage is supplied to the roof opening panel motor at all times through circuit 30-AG12 (RD/GN) with the motor being grounded by circuit 31-AG12 (BK/GN). The driver door module (DDM) provides the delayed accessory power on circuit 10-AJ43B (GY/VT) and also the global open/close signal on circuit 8-AJ43B (WH/BU). Since the roof opening panel motor is always powered, the delayed accessory circuit is actually used by the smart motor to determine key position (key OFF, key ON).

With the delayed accessory circuit powered, the roof opening panel smart motor will operate as per the command supplied by the voltage input from the roof opening panel control switch on circuits 32-AG10 (WH/BU) (OPEN), 9-AG7 (BN/RD) common, 32-AG12 (WH/GN) (TILT UP), 33-AG10 (YE/BU) (CLOSE). The commands may include either a one-touch (express) open or close, proportional open or close, vent open or close.

The global open function will occur if the unlock button is pressed and held for two seconds. The driver door module (DDM) will receive the input from the transmitter and will transmit a signal over the global open/close circuit 8-AJ43 (WH/BU) to the roof opening panel smart motor. The microprocessor (which makes it a "smart" motor) in the smart motor will determine which global function to carry out and will then do so. If the key is turned in the driver door lock cylinder to the unlock position and held for two seconds (for global open) or to the lock position and held for two seconds (for global close), the DDM will process these inputs and send the appropriate global open/close signal to the roof opening panel smart motor.