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Windshield / Windowglass: Other Lexus IS II

Windows 5 illustrations ~635 words

PRECAUTION

Note. When disconnecting the negative (-) battery cable, initialize the following systems after the cable is reconnected.

System NameSee procedure
Power Window Control SystemINITIALIZATION

SYSTEM NAME AND PROCEDURE DESCRIPTION TABLE

Scheme 85

Scheme 85: PARTS LOCATION

Scheme 86

Scheme 86: SYSTEM DIAGRAM

CUSTOMIZE PARAMETERS

HINT

The following items can be customized.

Note. After confirming whether the items requested by the customer are applicable or not for customization, perform customize operations. Be sure to record the current settings before customizing. When troubleshooting, make sure that the item in question is not set to "OFF" as a result of customization. (Example: For the symptom "the wireless function does not operate", first check that the wireless function is not set to "OFF", then perform troubleshooting).

POWER WINDOW

DISPLAY (ITEM)DEFAULT CONTENTSCONTENTSSETTING
UP/DOOR KEY (Door key linked P/W UP)ONFunction that enables all power windows to move up manually, via manual operation, when driver side door key cylinder is held in lock position for 1.5 seconds when engine switch is off.ON/OFF
DOWN/DOOR KEY (Door key linked P/W DOWN)ONFunction that enables all power windows to move down manually, via manual operation, when driver side door key cylinder is held in unlock position for 1.5 seconds when engine switch is off.ON/OFF
DOWN/WIRELESS (P/W DOWN w/ transmitter)ONFunction that enables all power windows to move down manually, via manual operation, when unlock switch on transmitter is held for 1.5 seconds when engine switch is off.ON/OFF
UP/WIRELESS (P/W UP w/ transmitter)ONFunction that enables all power windows to move up manually, via manual operation, when lock switch on transmitter is held for 1.5 seconds when engine switch is off.ON/OFF

POWER WINDOW CUSTOMIZE PARAMETERS

INITIALIZATION

  1. RESET (INITIALIZE) POWER WINDOW REGULATOR MOTOR NOTE: Resetting the power window motor (initializing the pulse sensor) is necessary when the battery terminal is disconnected; when the power window regulator master switch, power window regulator switch, wire harness, power window regulator and power window motor are replaced or removed/ installed; or when the fuses are replaced. AUTO operation function, jam protection function and remote operation function via the power window regulator master switch do not operate without resetting. Be sure to reset the power window regulator motors using the power window switch on each door because the motors cannot be reset by remote operation using the power window master switch. In order to prevent a large amount of current from flowing in the wires, do not simultaneously reset 2 or more power window regulator motors. If the power window switch has been continuously operated for a long time, the power window regulator motor will stop so that no additional load will be applied to the motor. Continuing to operate the switch even after the motor has stopped will cause the switch to blink while restricting the AUTO UP/DOWN function and the remote UP/DOWN function. If this happens, reset the motor again after several minutes have passed. Whenever disconnecting the battery terminal, reset all the other systems besides the power window control system. Turn the engine switch on (IG). Halfway open the power window by pressing the power window switch. Fully pull up the switch until the power window is fully closed and continue to hold the switch for approx. 1 second after the power window is fully closed. Check that the AUTO UP/DOWN function operates normally. If the AUTO UP/DOWN function operates normally, reset operations have been completed at this time. If not normal, follow the steps below. Disconnect the negative battery terminal for 10 seconds. Connect the battery terminal. Turn the engine switch on (IG). Halfway open the power window by pressing the power window switch. If the AUTO UP/DOWN function operates normally, reset operations have been completed at this time. If not normal, follow the steps below. Turn the engine switch on (IG). Halfway open the power window by pressing the power window switch. Fully pull up the switch until the power window is fully closed and continue to hold the switch for approx. 12 seconds after the power window is fully closed. Check that the AUTO UP/DOWN function operates normally.

FAIL-SAFE TABLE

  1. CHECK POWER WINDOW FAIL-SAFE FUNCTION HINT: If there is a malfunction in the power window system, some of the power window functions will be disabled.

Driver Side Power Window

Malfunctioning PartDisabled FunctionOperative Function
Pulse sensor circuit in power window motorAUTO UP/DOWN function Power window operation function after engine switch is turned offManual UP (fully pulled UP position) Manual DOWN Remote (AUTO and manual) Remote function after engine switch is turned off (AUTO and manual)
CPU in power window master switchAUTO UP/DOWN function Remote function (AUTO and manual)Manual UP (fully pulled UP position) Manual DOWN

DRIVER SIDE POWER WINDOW DESCRIPTION

Power Windows Except Driver Side Power Window

Malfunctioning PartDisabled FunctionOperative Function
Pulse sensor circuit in power window motor CPU in power window master switch Communication between master switch and each power window switchAUTO UP/DOWN function Power window operation function after engine switch is turned offManual UP (fully pulled UP position) Manual DOWN

POWER WINDOWS EXCEPT DRIVER SIDE POWER WINDOW DESCRIPTION TABLE

  1. INITIALIZATION NOTE: When disconnecting the cable from the negative (-) battery terminal, initialize the following systems after the cable is reconnected.
System NameSee procedure
Power Window Control SystemINITIALIZATION

SYSTEM NAME AND PROCEDURE

Scheme 87

Scheme 87: PARTS LOCATION

Scheme 88

Scheme 88: SYSTEM DIAGRAM

WINDOW DEFOGGER SYSTEM

SymptomSuspected area
Rear Window Defogger System does not OperateLH-IG fuse
DEFOG fuse
DEFOG relay
Multimedia module display (with navigation system)
Integration control & panel (without navigation system)
Rear window defogger wire
Wire harness

PROBLEM SYMPTOMS TABLE

Scheme 89

Scheme 89: TERMINALS OF ECU
  1. CHECK A/C AMPLIFIER ASSEMBLY Measure the voltage and resistance of each terminal of the connectors.

Voltage

Symbols (Terminal No)Wire ColorTerminal DescriptionConditionSpecified Condition
DFG (J58-3) - GND (J58-20)B - W-BRear Defogger SignalEngine switch on (IG) Rear defogger switch OFF10 to 14 V

A/C AMPLIFIER ASSEMBLY (VOLTAGE)

Resistance

Symbols (Terminal No)Wire ColorTerminal DescriptionConditionSpecified Condition
GND (J58-20) - Body groundW-B - Body groundGroundAlwaysBelow 1 ohms

A/C AMPLIFIER ASSEMBLY (RESISTANCE)