Power Window Control System

WARNING: This page is about a different car, the 2002 Toyota Sequoia. However, it is still accessible from the selected car via links, so may be relevant.

This system uses the multiplex communication system, so check diagnosis system of the multiplex communication system before you proceed with troubleshooting.

POWER WINDOW CONTROL SYSTEM

Symptom/Suspect Area

See

All Power Windows Do Not Operate (Power Door Lock System Is Normal)

Power Window Master Switch

⁽¹⁾

Wire Harness

.....

Body ECU

⁽²⁾

Only Driver's Window Does Not Operate

Power Window Master Switch

⁽¹⁾

Power Window Switch

⁽¹⁾

Power Window Motor

⁽³⁾

Wire Harness

.....

Window Lock Function Does Not Operate

Power Window Master Switch

⁽¹⁾

Only One Window Glass Does Not Move

Power Window Master Switch

⁽¹⁾

Power Window Switch

⁽¹⁾

Power Window Motor

⁽³⁾

Wire Harness

.....

Key Related Power Window Operations Do Not Operate With Driver Side Door Key Cylinder (Master Switch Operation Is Normal)

Power Window Master Switch

⁽¹⁾

Wire Harness

.....

Auto Up Or Auto Down Does Not Operate ⁽⁴⁾

Power Window Switch

⁽¹⁾

Power Window Motor

⁽³⁾

Wire Harness

.....

⁽¹⁾	See Step 3 Of INSPECTION

⁽²⁾	BODY, CAB CONTROL SYSTEMS -Body ECU

⁽³⁾	See Steps 5-8 Of INSPECTION

⁽⁴⁾

AUTO UP OR " AUTO DOWN MAY NOT FUNCTION WHEN THE MANUAL SWITCH IS PRESSED AND HELD FOR 2 SECONDS OR MORE WITH THE WINDOW GLASS FULLY OPEN OR CLOSED. IN THIS CASE, BY PERFORMING A SEQUENCE OF THE WINDOW GLASS OPERATIONS (FULL OPEN, FULLY CLOSE AND THEN HALF OPEN), THE FUNCTION CAN BE RESTORED. IF NOT, REPLACE THE ECU