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Home >> Lexus >> 2008 >> IS F >> Repair and Diagnosis >> Body & Frame >> Windows >> Windshield/WINDOWGLASS >> Power Window Control System >> Problem Symptoms Table
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Problem Symptoms Table

HINT.

Use the table below to help determine the cause of problem symptoms. If multiple suspected areas are listed, the potential causes of the symptoms ate listed in order of probability in the "Suspected Area" column of the table Check each symptom by checking the suspected areas in the order they are listed Replace parts as necessary.

Power Window Control System 

PROBLEM SYMPTOMS CHART

Symptom Suspected Area See
Remote Up / Down Function does not Operate Multiplex communication system REMOTE UP / DOWN FUNCTION DOES NOT OPERATE 
Multiplex network master switch assembly -
Multiplex network switch assembly (for front passenger side) -
Multiplex network switch assembly (for rear LH side) -
Multiplex network switch assembly (for rear RH side) -
Main body ECU RH (cowl side junction block RH) -
Wire harness or connector -
Driver Side Power Window does not Operate with Power Window Master Switch ECU-IG RH fuse DRIVER SIDE POWER WINDOW DOES NOT OPERATE WITH POWER WINDOW MASTER SWITCH 
MPX-B fuse -
FR DOOR LH fuse -
Wire harness or connector -
Front power window regulator motor assembly (for driver side) -
Multiplex network master switch assembly -
Front Passenger Side Power Window does not Operate with Front Passenger Side Power Window Switch FR DOOR RH fuse FRONT PASSENGER SIDE POWER WINDOW DOES NOT OPERATE WITH FRONT PASSENGER SIDE POWER WINDOW SWITCH 
Wire harness or connector -
Multiplex network master switch assembly -
Front power window regulator motor assembly (for front passenger side) -
Multiplex network switch assembly (for front passenger side) -
Rear Power Window LH does not Operate with Rear Power Window Switch LH RR DOOR LH fuse REAR POWER WINDOW LH DOES NOT OPERATE WITH REAR POWER WINDOW SWITCH LH 
Wire harness or connector -
Multiplex network master switch assembly -
Rear power window regulator motor assembly (for rear LH side) -
Multiplex network switch assembly (for rear LH side) -
Rear Power Window RH does not Operate with Rear Power Window Switch RH RR DOOR RH fuse REAR POWER WINDOW RH DOES NOT OPERATE WITH REAR POWER WINDOW SWITCH RH 
Wire harness or connector -
Multiplex network master switch assembly -
Rear power window regulator motor assembly (for rear RH side) -
Multiplex network switch assembly (for rear RH side) -
Driver Side Power Window Auto Up / Down Function does not Operate with Power Window Master Switch Front power window regulator motor assembly (for driver side) DRIVER SIDE POWER WINDOW AUTO UP / DOWN FUNCTION DOES NOT OPERATE WITH POWER WINDOW MASTER SWITCH 
Multiplex network master switch assembly -
Wire harness or connector -
Front Passenger Side Power Window Auto Up / Down Function does not Operate with Front Passenger Side Power Window Switch Front power window regulator motor assembly (for front passenger side) FRONT PASSENGER SIDE POWER WINDOW AUTO UP / DOWN FUNCTION DOES NOT OPERATE WITH FRONT PASSENGER SIDE POWER WINDOW SWITCH 
Multiplex network switch assembly (for front passenger side) -
Wire harness or connector -
Rear Power Window LH Auto Up / Down Function does not Operate with Rear Power Window Switch LH Rear power window regulator motor assembly (for rear LH side) REAR POWER WINDOW LH AUTO UP / DOWN FUNCTION DOES NOT OPERATE WITH REAR POWER WINDOW SWITCH LH 
Multiplex network switch assembly (for rear LH side) -
Wire harness or connector -
Rear Power Window RH Auto Up / Down Function does not Operate with Rear Power Window Switch RH Rear power window regulator motor assembly (for rear RH side) REAR POWER WINDOW RH AUTO UP / DOWN FUNCTION DOES NOT OPERATE WITH REAR POWER WINDOW SWITCH RH 
Multiplex network switch assembly (for rear RH side) -
Wire harness or connector -
All Power Windows do not Operate with Driver Side Door Key Cylinder or Wireless Transmitter Wireless door lock control system ALL POWER WINDOWS DO NOT OPERATE WITH DRIVER SIDE DOOR KEY CYLINDER OR WIRELESS TRANSMITTER 
Power door lock control system -
Multiplex network master switch assembly -
Key-off Operation Function Operates even if Operating Conditions are not Satisfied Multiplex communication line KEY-OFF OPERATION FUNCTION OPERATES EVEN IF OPERATING CONDITIONS ARE NOT SATISFIED 
Front door courtesy light assembly (for driver side) -
Wire harness or connector -
Main body ECU RH (cowl side junction block RH) -
Auto Up Operation does not Fully Close Power Window (Jam Protection Function is Activated) Glass position initialization (applicable location) AUTO UP OPERATION DOES NOT FULLY CLOSE POWER WINDOW (JAM PROTECTION FUNCTION IS ACTIVATED) 
Check and clean glass run (applicable location) -
Multiplex network master switch assembly -
Multiplex network switch assembly (for front passenger side) -
Multiplex network switch assembly (for rear LH side) -
Multiplex network switch assembly (for rear RH side) -
Jam Protection Function does not Operate Glass position initialization (applicable location) JAM PROTECTION FUNCTION DOES NOT OPERATE 
Multiplex network master switch assembly -
Multiplex network switch assembly (for front passenger side) -
Multiplex network switch assembly (for rear LH side) -
Multiplex network switch assembly (for rear RH side) -