ENGINE IMMOBILISER SYSTEM (w/ Entry and Start System) Certification ECU Power Source Circuit

DESCRIPTION

This circuit provides power to the certification ECU.

WIRING DIAGRAM

A01IR6WE02

INSPECTION PROCEDURE

Note

Inspect the fuses for circuits related to this system before performing the following inspection procedure.

PROCEDURE


  1. CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU - BATTERY AND BODY GROUND)


    1. A01ISEIE06
      Text in Illustration
      *1

      Front view of wire harness connector

      (to Certification ECU)

      Disconnect the H51 ECU connector.

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      H51-1 (+B) - Body ground Always 11 to 14 V
      H51-16 (IG) - Body ground Engine switch off Below 1 V
      H51-16 (IG) - Body ground Engine switch on (IG) 11 to 14 V
      H51-17 (CUTB) - Body ground Always 11 to 14 V

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      H51-15 (E) - Body ground Always Below 1 Ω

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

    PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE Click here