ENGINE IMMOBILISER SYSTEM (w/o Smart Entry and Start System) Diagnosis Circuit

DESCRIPTION

This circuit is used to read the DTCs that are output from the transponder key ECU assembly with the GTS.

WIRING DIAGRAM

A01EMB1E02

INSPECTION PROCEDURE

Note

If the transponder key ECU assembly is replaced, register the key and ECU communication ID (Refer to Service Bulletin).

PROCEDURE


  1. CHECK HARNESS AND CONNECTOR (DLC3 - TRANSPONDER KEY ECU AND BODY GROUND)


    1. A01EMQHE01
      Text in Illustration
      *1

      Front view of wire harness connector

      (to Transponder Key ECU Assembly)
      *2

      Front view of wire harness connector

      (to DLC3)

      Disconnect the transponder key ECU assembly connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      D22-9 (D) - D1-7 (SIL) Always Below 1 Ω
      D1-4 (CG) - Body ground Always Below 1 Ω
      D22-9 (D) - Body ground Always 10 kΩ or higher
      D1-7 (SIL)- Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

    REPLACE TRANSPONDER KEY ECU ASSEMBLY