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 intelligent tester.

WIRING DIAGRAM

A017FI2E05

INSPECTION PROCEDURE

Note

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

PROCEDURE


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


    1. A017BXRE03

      Disconnect the transponder key ECU connector.

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

      Standard resistance
      Tester Connection Condition Specified Condition
      D37-9 (D) - D43-7 (SIL) Always Below 1 Ω
      D37-9 (D) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  2. CHECK HARNESS AND CONNECTOR (DLC3 - BODY GROUND)


    1. A017CLNE04

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

      Standard resistance
      Tester Connection Condition Specified Condition
      D43-4 (CG) - Body ground Always Below 1 Ω

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

    REPLACE TRANSPONDER KEY ECU ASSEMBLY