Windows: Service Precautions

Precautions

1. Precautions for Power window system

CAUTION:
- Power window system uses large-scale multiplex communication for vehicle body [LIN]. At first, follow the "How to proceed the troubleshooting" and perform the "Communication function checking" to check that malfunction does not occur in the communication system, and then proceed to the troubleshooting.
- When malfunction occurs in the auto-reverse function of the power window system, disable the AUTO operation. Otherwise, accidental pinching may arise. Check that the diagnostic code is not output, then proceed to the troubleshooting.
- When replacing the power window regulator motor ASSY with new one or reusing its motor, perform the initialization of the power window system.
- After replacing door glass and/or weather strip, AUTO UP operation sometimes activates auto-reverse function. In this case, the door glass is fully closed by performing the procedure in the following order (*3). AUTO U0 HOLD -> (the auto-reverse function (glass reverse operation)) -> (*1) -> AUTO U0 HOLD -> (the auto-reverse function (glass reverse operation)) -> AUTO UP HOLD (*2).

- *1: If DOWN operation, IG OFF & timer operation OFF, and/or index operation is executed between auto-reverse function and AUTO UP HOLD, return to the beginning of the procedure.
- *2: The upper end position of the glass is relearned by this operation (AUTO UP HOLD).
- *3: The failure of the door glass or regulator may prevent full closing of the door glass.

- Even if the power window system is normal, unexpected operation of the auto-reverse function may occur resulting from the abrupt change of the opening/closing speed of the window. This symptom occurs when the system detects any value out of the learned operation.
a. Window opening/closing operation while driving the vehicle on rough roads.
b. Window opened/closed operation when door is opened/closed.
c. Sudden voltage variation occurs.

- Never disconnect the battery with IG ON. If the battery is disconnected while IG ON, DTC may not be output properly.