Power Windows Do Not Operate At All: Procedure

CHECK HARNESS AND CONNECTOR (POWER WINDOW POWER SOURCE)

Disconnect the power window master switch connector.

Fig 1: Identifying I3 Power Window Master Switch Connector
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Measure the voltage according to the value(s) table below.

Standard Voltage

Tester Connection	Switch Condition	Specified Condition
I3-6 (B) - Body ground	Ignition switch ON	11 to 14 V

NG → See step 4

OK: Go to next step

CHECK HARNESS AND CONNECTOR (POWER WINDOW MASTER SWITCH - BODY GROUND)

Measure the resistance according to the value(s) in the table below.

Fig 2: Identifying I3 Power Window Master Switch Connector Terminal

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Standard Resistance

Tester Connection	Condition	Specified Condition
I3-1 (E)- Body ground	Always	Below 1 Ω

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR

OK → See step 3

CHECK HARNESS AND CONNECTOR (MAIN BODY ECU - BODY GROUND)

Disconnect the instrument panel junction block connector.

Fig 3: Identifying 2E Instrument Panel Junction Block Connector Terminal
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Measure the resistance according to the value(s) in the table below.

Standard Resistance

Tester Connection	Condition	Specified Condition
2E-17 (PWS) - Body ground	Always	Below 1 Ω

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR

OK → REPLACE MAIN BODY ECU (INSTRUMENT PANEL JUNCTION BLOCK)