TIRE PRESSURE WARNING SYSTEM ECU Power Source Circuit

DESCRIPTION

This is the power source for the tire pressure warning ECU and receiver.

WIRING DIAGRAM

A0055VAE52

CAUTION / NOTICE / HINT

Note


  • When replacing the tire pressure warning ECU and receiver, read the transmitter IDs stored in the old ECU using the GTS and write them down before removal.

  • It is necessary to perform initialization (See page ) after registration Click here of the transmitter IDs into the tire pressure warning ECU and receiver if the ECU has been replaced

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

PROCEDURE


  1. CHECK HARNESS AND CONNECTOR (ECU - BATTERY)


    1. A0055NQE02
      Text in Illustration
      *A for Sedan
      *B for Wagon
      *a

      Front view of wire harness connector

      (to Tire Pressure Warning ECU and Receiver)

      Disconnect the tire pressure warning ECU and receiver G62*1 or L2*2 connector.


      • *1: for Sedan

      • *2: for Wagon

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

      Standard Voltage
      for Sedan
      Tester Connection Condition Specified Condition
      G62-1 (IG) - Body ground Ignition switch ON 10 to 16 V
      Ignition switch off Below 1 V
      for Wagon
      Tester Connection Condition Specified Condition
      L2-1 (IG) - Body ground Ignition switch ON 10 to 16 V
      Ignition switch off Below 1 V

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

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


    1. A0053F3E02
      Text in Illustration
      *A for Sedan
      *B for Wagon
      *a

      Front view of wire harness connector

      (to Tire Pressure Warning ECU and Receiver)

      Disconnect the tire pressure warning ECU and receiver G62*1 or L2*2 connector.


      • *1: for Sedan

      • *2: for Wagon

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

      Standard Resistance
      for Sedan
      Tester Connection Condition Specified Condition
      G62-12 (GND) - Body ground Always Below 1 Ω
      for Wagon
      Tester Connection Condition Specified Condition
      L2-12 (GND) - Body ground Always Below 1 Ω
      Result
      Result Proceed to
      OK (for Sedan) A
      OK (for Wagon) B
      NG C

    A

    REPLACE TIRE PRESSURE WARNING ECU AND RECEIVER Click here

    B

    REPLACE TIRE PRESSURE WARNING ECU AND RECEIVER Click here

    C

    REPAIR OR REPLACE HARNESS OR CONNECTOR