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Home >> Lexus >> 2005 >> ES 330 V6-3.3L (3MZ-FE) >> Repair and Diagnosis >> Accessories and Optional Equipment >> Antitheft and Alarm Systems >> Alarm Module >> Testing and Inspection >> Theft Deterrent System
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Theft Deterrent System

TERMINALS OF ECU




1. CHECK THEFT WARNING ECU ASSY (THEFT DETERRENT ECU)




a. Disconnect the theft warning ECU assy connector, and check the voltage and continuity of each terminal of the disconnected connector.

If the result is not as specified, the wire harness side may malfunction.




b. Connect the theft warning ECU assy connector, and check the voltage of each terminal of the connector.

If the result is not as specified, the theft warning ECU assy may malfunction.




2. CHECK DRIVER SIDE JUNCTION BLOCK ASSY (BODY ECU)

a. Inspect the ECU B fuse.




b. Disconnect the 2F driver side junction block connector, and check the voltage of the terminal of the disconnected connector.

If the result is not as specified, the wire harness side may malfunction.

c. Connect the 2F driver side junction block connector.




d. Check the voltage of each terminal of the connectors.

HINT: If the value is not as specified the vehicle may be defective. In this case, check the harness, connector and fuse between the ECU and battery, then repair or replace it if necessary.
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