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Home >> Toyota >> 2008 >> 4Runner Limited, 4.7 T, AWD >> Repair and Diagnosis >> Electrical >> Body Electrical >> OEM System Circuits >> Moon Roof System >> System Outline

System Outline

Current is always applied from the POWER fuse to TERMINAL 10 of the moon roof control ECU. When the ignition SW is turned on, current flows to TERMINAL 9 of the moon roof control ECU.

  1. Moon Roof Open/Close Operation 

    To operate the moon roof, two sets of moon roof control switches are provided: "Slide open/tilt down"; and "Slide close/tilt up". When a switch is pressed and held down for a certain period of time, the one touch automatic operation takes over in depending on the function of the switch and the operation will continue even if the switch is then released.

  2. Key-Off Operation 

    The roof remains operable for around 45 seconds after the ignition SW is turned from ON to OFF, or until the driver seat door is opened and then closed, whichever occurs first. However, if an overload reverse operation is occurring at the time, the key-off operation will continue until it completes the overload reverse operation.

  3. Overload Reverse Operation 

    The moon roof control ECU determines if any foreign material has become jammed in the moon roof from abnormal motor speed signals and reverses the moon roof operation whenever a jam is detected.

  4. Deflector Control Function 

When the roof is slid fully open, the moon roof control ECU automatically adjusts the height of deflector according to the vehicle cruising speed.

* If the battery terminal or fuse is disconnected, the roof position needs to be reset to its initial position using the moon roof control SW and by following the procedure outlined below:

  1. Reconnect the battery terminal or fuse.
  2. Turn the ignition SW ON.
  3. Operate the moon roof control SW to open the roof halfway or more.
  4. Then operate the moon roof control SW to fully close the roof.

Do not release the switch for at least one second after the roof is fully closed.