Inspection Procedure
WARNING: This page is about a different car, the 2007 Lexus SC 430. However, it is still accessible from the selected car via links, so may be relevant.
- INSPECT POWER WINDOW REGULATOR MASTER SWITCH ASSEMBLY
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
- Remove the master switch.
- Measure the resistance of the switch when the switch is operated.
Standard resistance:
for Driver switch
TESTER CONNECTION SPECIFIED CONDITIONTester Connection Switch Condition Specified Condition 6 (PW) - 16 (AUTO)
6 (PW) - 20 (DUP)AUTO UP Below 50 Ω 6 (PW) - 20 (DUP) UP Below 50 Ω - OFF - 6 (PW) - 11 (DDN) DOWN Below 10 Ω 8 (PW) - 16 (AUTO) AUTO DOWN Below 10 Ω 6 (PW) - 11 (DDN) Below 50 Ω for Door control switch
TESTER CONNECTION SPECIFIED CONDITIONSwitch Condition Tester Connection Specified Condition UNLOCK 10 (E) - 18 (MUL) Below 1 Ω LOCK 8 (ML) - 10 (E) Below 1 Ω OFF - -
NG: REPLACE POWER WINDOW REGULATOR MASTER SWITCH ASSEMBLY
OK: Go to Next Step
- CHECK WIRE HARNESS (MASTER SWITCH - DOOR ECU FRONT LH)
- Disconnect the P14 switch connector.
- Disconnect the D17 ECU connector.
- Measure the resistance of the wire harness side connectors.
Standard resistance
TESTER CONNECTION SPECIFIED CONDITIONTester Connection Specified Condition P14-6 (PW) - D17-21 (PWS) Below 1 Ω P14-10 (E) - D17-29 (PWE) Below 1 Ω P14-16 (AUTO) - D17-2 (AUTO) Below 1 Ω P14-20 (DUP) - D17-23 (MUP) Below 1 Ω P14-11 (DDN) - D17-25 (MDN) Below 1 Ω P14-8 (ML) - D17-8 (ML) Below 1 Ω P14-18 (MUL) - D17-19 (MUL) Below 1 Ω P14-6 (PW) or D17-21 (PWS) - Body ground 10 kΩ or higher P14-10 (E) or D17-29 (PWE) - Body ground 10 kΩ or higher P14-16 (AUTO) or D17-2 (AUTO) - Body ground 10 kΩ or higher P14-20 (DUP) or D17-23 (MUP) - Body ground 10 kΩ or higher P14-11 (DDN) or D17-25 (MDN) - Body ground 10 kΩ or higher P14-8 (ML) or D17-8 (ML) - Body ground 10 kΩ or higher P14-18 (MUL) or D17-19 (MUL) - Body ground 10 kΩ or higher
NG: REPAIR OR REPLACE HARNESS AND CONNECTOR
OK: REPLACE MULTIPLEX NETWORK DOOR ECU FRONT LH