Home Vehicle Exterior Window/Glass POWER WINDOW CONTROL SYSTEM
Last Modified: 11-27-2007 1.6 J
Service Category: Vehicle Exterior Section: Window/Glass
Model Year: 2008 Model: LX570 Doc ID: RM000000Y4601AX
Title: WINDOW / GLASS: POWER WINDOW CONTROL SYSTEM: DESCRIPTION (2008 LX570)

Driver Side Power Window Auto Up / Down Function does not Operate with Power Window Master Switch

DESCRIPTION

If the auto up/down function does not operate, the cause may be one or more of the following:

  • The ECU in the power window regulator motor determines that the power window regulator motor has not been initialized.
  • The master switch has a malfunction.
  • The Hall-IC in the driver side power window regulator motor has a malfunction.
  • There is an open or short in the wiring between the master switch and the driver side power window regulator motor.

INSPECTION PROCEDURE

PROCEDURE

1.

CHECK FOR DTC

(a) Check for DTCs WINDOW / GLASS: POWER WINDOW CONTROL SYSTEM: DTC CHECK / CLEAR (2008 LX570) .

Result

Result

Proceed to

DTC is not output

A

B2311 is output

B

B2312 is output

C

B2313 is output

D

LIN communication system DTCs are output

E

A

2.

CHECK MANUAL UP/DOWN FUNCTION

(a) Check that the driver side door power window moves when the manual up/down function of the multiplex network master switch is operated WINDOW / GLASS: POWER WINDOW CONTROL SYSTEM: OPERATION CHECK (2008 LX570) .

OK:

Driver side door power window moves.

OK

3.

READ VALUE USING TECHSTREAM (MULTIPLEX NETWORK MASTER SWITCH)

(a) Use the Data List to check if the master switch is functioning properly WINDOW / GLASS: POWER WINDOW CONTROL SYSTEM: DATA LIST / ACTIVE TEST (2008 LX570) .

Master Switch

Tester Display

Measurement Item/Range

Normal Condition

Diagnostic Note

D Door P/W Auto SW

Driver side power window auto up/down signal / ON or OFF

ON: Driver side power window auto up/down switch operated

OFF: Driver side power window switch not operated

-

OK:

Techstream display changes according to operation of multiplex network master switch.

OK