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 DLC3 TERMINAL VOLTAGE

Turn the ignition switch on.

Measure the voltage.

Standard voltage

VOLTAGE SPECIFICATION

Tester Connection	Specified Condition
TS(12) - CG(4)	11 to 14 V

Fig 1: Identifying DLC3 Connector Terminals

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OK: END

NG: Go to Next Step

CHECK HARNESS AND CONNECTOR (DLC3 - BODY GROUND)

Measure the resistance.

Standard resistance

RESISTANCE SPECIFICATION

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

Fig 2: Identifying DLC3 Connector Terminal

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NG: REPAIR OR REPLACE HARNESS OR CONNECTOR

OK: Go to Next Step

CHECK HARNESS AND CONNECTOR (POWER STEERING ECU - DLC3)

Disconnect the connector from the power steering ECU.

Measure the resistance.

Standard resistance

RESISTANCE SPECIFICATION

Tester Connection	Specified Condition
TS (D31-11) - TS(12)	Below 1 Ω
TS (D31-11) - Body ground	10 kΩ or higher

Fig 3: Identifying DLC3 Connector And Power Steering ECU Connector

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR

OK: REPLACE POWER STEERING ECU