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 LOCK ASSEMBLY LH

Apply the battery voltage to the door lock motor and check the operation of the door lock motor.

CONNECTOR TERMINAL VOLTAGE REFERENCE CHART

Measurement Condition	Specified Condition
Battery positive (+) --> Terminal 4 Battery negative(-) --> Terminal 1	Lock
Battery positive (+) --> Terminal 1 Battery negative(-) --> Terminal 4	Unlock

Fig 1: Inspecting Front Door Lock Assembly LH

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPLACE FRONT DOOR LOCK ASSEMBLY LH

OK: GO TO NEXT STEP

CHECK HARNESS AND CONNECTOR (MAIN BODY ECU - FRONT DOOR LOCK ASSEMBLY LH)

Disconnect the D33 and 4H main body ECU connectors.
Disconnect the G5 door lock connector.

Measure the resistance.

Standard resistance

TESTER CONNECTION SPECIFIED CONDITION

Tester Connection	Specified Condition
4H-17(ACT+) - G5-4 (L)	Below 1 Ω
D33-2 (ACTD) - G5-1 (UL)	Below 1 Ω

Reconnect the main body ECU connectors.
Reconnect the door lock connector.

Fig 2: Identifying D33 And 4H Main Body ECU Connectors And G5 Door Lock Connector

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR

OK: REPLACE MAIN BODY ECU