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.

PERFORM ACTIVE TEST USING TECHSTREAM

Connect the Techstream to the DLC3.
Turn the ignition switch to ON.
Turn the tester on.
Enter the following menus: Body Electrical / Immobilizer / Active Test.

Perform the Active Test according to the display on the tester.

Immobilizer:

ACTIVE TEST CHART

Tester Display	Test Part	Control Range	Diagnostic Note
Security Indic	Turn security indicator ON/OFF	ON/OFF	-

OK: Security indicator turns ON and OFF

OK: Go to step 3

NG: Go to next step.

CHECK HARNESS AND CONNECTOR (TRANSPONDER KEY ECU - SECURITY INDICATOR LIGHT)

Disconnect the D23 transponder key ECU connector.

Fig 1: Identifying Transponder Key ECU And Security Indicator Connector Terminals

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Disconnect the D25 security indicator connector.

Measure the resistance.

Standard resistance

TESTER CONNECTION SPECIFIED CONDITION

Tester Condition	Specified Condition
D23-8 (IND) - D25-2	Below 1Ω
D23-8 (IND) - Body ground	10 kΩ or higher

Reconnect the D23 transponder key ECU connector.
Reconnect the D25 security indicator connector.

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR

OK: Go to next step.

INSPECT TRANSPONDER KEY ECU ASSEMBLY

Measure the voltage.

Standard voltage

TESTER CONNECTION SPECIFIED CONDITION

Tester Condition	Condition	Specified Condition
D23-8 (IND) - Body ground	Immobilizer set	11 to 14 V and below 1 V output alternately

Fig 2: Identifying Transponder Key ECU Assembly Connector Terminal

NG: REPLACE TRANSPONDER KEY ECU ASSEMBLY

OK: REPLACE SECURITY INDICATOR LIGHT