Inspection Procedure

WARNING: This page is about a different car, the 2004 Lexus LS 430. However, it is still accessible from the selected car via links, so may be relevant.

INSPECT POWER WINDOW REGULATOR MASTER SWITCH ASSY
1. Remove the power window master switch.
2. Disconnect the P13 switch connector.
3. Measure the resistance between the terminals of the connector when the switch is operated.
Standard:

Fig 1: Terminals Resistance Reference Chart
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Fig 2: Inspecting Power Window Regulator Master Switch Assy
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPLACE POWER WINDOW REGULATOR MASTER SWITCH ASSY

OK: Go to next step.
CHECK WIRE HARNESS (POWER WINDOW REGULATOR MASTER SWITCH ASSY - DRIVER DOOR ECU)
1. Disconnect the P13 switch connector.
2. Disconnect the D24 ECU connector.
3. Measure the resistance of the wire harness side connectors.
Standard:

Fig 3: Terminals Resistance Reference Chart
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Fig 4: Checking Wire Harness (Power Window Regulator Master Switch Assy - Driver Door ECU)
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPAIR OR REPLACE HARNESS AND CONNECTOR

OK: REPLACE DRIVER DOOR ECU