Inspection Procedure

WARNING: This page is about a different car, the 2008 Toyota Yaris. However, it is still accessible from the selected car via links, so may be relevant.

INSPECT FRONT DOOR COURTESY SWITCH ASSEMBLY

Remove the driver side front door courtesy switch.

Measure the resistance.

Standard resistance

TESTER CONNECTION SPECIFIED CONDITION

Tester Connection	Condition	Specified Condition
1 - Switch body	Switch pressed	10 kΩ or higher
1 - Switch body	Switch free	Below 1 Ω

Fig 1: Identifying Front Door Courtesy Switch Assembly Operation

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Reinstall the driver side front door courtesy switch.

NG: REPLACE FRONT DOOR COURTESY SWITCH ASSEMBLY

OK: Go to next step.

CHECK HARNESS AND CONNECTOR (FRONT DOOR COURTESY SWITCH CIRCUIT)

Disconnect the D23 ECU connector.

Measure the resistance.

Standard resistance

TESTER CONNECTION SPECIFIED CONDITION

Tester Connection	Condition	Specified Condition
D23-7 (CTY) - Body ground	Courtesy switch pushed	10 kΩ or higher
D23-7 (CTY) - Body ground	Courtesy switch free	Below 1 Ω

Fig 2: Identifying Front Door Courtesy Switch Connector Terminal

Reconnect the ECU connector.

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR

OK: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE