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

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DTC Code DTC Name
  ECU Power Source Circuit
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DESCRIPTION

This circuit provides power to operate the transponder key ECU assembly.

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WIRING DIAGRAM

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INSPECTION PROCEDURE

Note:

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

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PROCEDURE


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    CHECK HARNESS AND CONNECTOR (TRANSPONDER KEY ECU - BATTERY)


    1. A017D54E14

      Disconnect the transponder key ECU connector.

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

      Standard voltage
      Tester Connection Condition Specified Condition
      D37-1 (+B) - Body ground Always 11 to 14 V
      D37-2 (IG) - Body ground Ignition switch OFF Below 1 V
      D37-2 (IG) - Body ground Ignition switch ON 11 to 14 V

  2. Click here

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


    1. A017D54E13

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

      Standard resistance
      Tester Connection Condition Specified Condition
      D37-16 (GND) - Body ground Always Below 1 Ω

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    REPAIR OR REPLACE HARNESS OR CONNECTOR, OR REPLACE FUSE

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    REPAIR OR REPLACE HARNESS OR CONNECTOR

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    REPLACE TRANSPONDER KEY ECU ASSEMBLY