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.

CHECK HARNESS AND CONNECTOR (DLC3 - ECM)

Turn the ignition switch off.
Disconnect the connector from the ECM.

Measure the resistance.

Standard resistance

TESTER CONNECTION SPECIFIED CONDITION

Tester Connection	Condition	Specified Condition
D15-13(TC)-A21-27 (TC)	Always	Below 1 Ω

Fig 1: Identifying Connector Terminal (DLC3 - ECM)

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR (TC OF DLC3 - TC OF ECM) CHECK HARNESS AND CONNECTOR (CG OF DLC3 - BODY GROUND)

OK: GO TO NEXT STEP

CHECK HARNESS AND CONNECTOR (CG OF DLC3-BODY GROUND)

Measure the resistance.

Standard resistance

TESTER CONNECTION SPECIFIED CONDITION

Tester Connection	Condition	Specified Condition
D15-4(CG)-Body ground	Always	Below 1 Ω

Fig 2: Identifying DLC3 Connector Terminal

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR (CG OF DLC3 - BODY GROUND)

OK: GO TO NEXT STEP

CHECK HARNESS AND CONNECTOR (TC OF ECM)

Measure the resistance.

Standard resistance

TESTER CONNECTION SPECIFIED CONDITION

Tester Connection	Condition	Specified Condition
A21-27(TC) - Body ground	Always	1 MΩ or higher

Fig 3: Identifying ECM Connector Terminals

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR

OK: GO TO NEXT STEP

REPLACE ECM

Replace the ECM.

Check for DTCs of the ECM (See DTC CHECK/CLEAR ). Result

Result

RESULT REFERENCE

Result	Proceed to
Normal system code is output	A
DTC is output	B
DTC output mode is set (except center airbag sensor assembly)	C

A: END

B: GO TO INSPECTION PROCEDURE OF DTC OUTPUT

C: REPLACE CENTER AIRBAG SENSOR ASSEMBLY