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 FRONT COURTESY LIGHT ASSEMBLY
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
- Remove the door courtesy light.
- Apply battery voltage to the door courtesy light connector and check that the door courtesy light illuminates.
OK
MEASUREMENT CONDITION AND SPECIFIED CONDITIONMeasurement Condition Specified Condition Battery positive (+) → Terminal 1
Battery negative (-) → Terminal 2Door courtesy light illuminates
NG: FRONT COURTESY LIGHT ASSEMBLY
OK: Go to Next step
- CHECK WIRE HARNESS (ECU - LIGHT)
- Check the wire harness between the driver door ECU and door courtesy light LH.
- Disconnect the D17 ECU connector.
- Disconnect the D6 light connector.
- Measure the resistance of the wire harness side connectors.
Standard resistance
RESISTANCE SPECIFICATIONMeasurement Condition Specified Condition D17-18 (CYL) - D6-2 Below 1 Ω D17-7 (CYLB) - D6-1 Below 1 Ω D17-18 (CYL) - Body ground 10 kΩ or higher D17-7 (CYLB) - Body ground 10 kΩ or higher
- Check the wire harness between the passenger door ECU and door courtesy light RH.
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
- Disconnect the P9 ECU connector.
- Disconnect the D7 light connector.
- Measure the resistance of the wire harness side connectors.
Standard resistance
RESISTANCE SPECIFICATIONMeasurement Condition Specified Condition P9-18 (CYL) - D7-2 Below 1 Ω P9-7 (CYLB) - D7-1 Below 1 Ω P9-18 (CYL) - Body ground 10 kΩ or higher P9-7 (CYLB) - Body ground 10 kΩ or higher
NG: REPAIR OR REPLACE HARNESS AND CONNECTOR
OK: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE
- Check the wire harness between the driver door ECU and door courtesy light LH.