Inspection Procedure

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

NOTE: If the transponder key ECU is replaced, register the key and ECU communication ID.

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 - IMMOBILIZER

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

OK:

The security indicator turns on and off according to the tester operation.

NG: Go to step 2

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

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

Disconnect the E73 transponder key ECU connectors.

Fig 1: Identifying E73 Transponder Key ECU Connectors And E32 Air Conditioning Control Connectors

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Disconnect the E32 air conditioning control connectors.

Measure the resistance according to the value (s) in the table below.

Standard resistance

STANDARD RESISTANCE

Tester Connection	Condition	Specified Condition
E73-8 (IND) - E32-15 (LP)	Always	Below 1 Ω.
E73-8 (IND) - Body ground	Always	10 kΩ or higher

Reconnect the transponder key ECU connectors.
Reconnect the air conditioning control connectors.

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR

OK: Go to Next Step

CHECK HARNESS AND CONNECTOR (SECURITY INDICATOR LIGHT - BODY GROUND)

Disconnect E32 air conditioning control connector.

Fig 2: Identifying E32 Air Conditioning Control Connector

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Measure the resistance according to the value (s) in the table below.

Standard resistance

STANDARD RESISTANCE

Tester Connection	Condition	Specified Condition
E32-20 (E) - Body ground	Always	Below 1 Ω

Reconnect the air conditioning control connector.

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR

OK: Go to Next Step

INSPECT TRANSPONDER KEY ECU

Fig 3: Identifying E73 Transponder Key ECU Connectors

Measure the voltage according to the value (s) in the table below.

Standard voltage

STANDARD VOLTAGE

Tester Connection	Condition	Specified Condition
E73-8 (IND) - Body ground	Immobilizer set state (No key is in ignition key cylinder)	Repeats 11 to 14 V and below 1 V

NG: REPLACE AIR CONDITIONING CONTROL (See REMOVAL )

OK: REPLACE TRANSPONDER KEY ECU (See REMOVAL )