TIRE PRESSURE WARNING SYSTEM ECU Power Source Circuit

DESCRIPTION

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

WIRING DIAGRAM

A000OS3E05

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.

Tech Tips

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

PROCEDURE


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


    1. A000QI0E02
      Text in Illustration
      *A except AWL10R-BEXQHQ and GWL10R-BEXQBQ
      *B for AWL10R-BEXQHQ and GWL10R-BEXQBQ
      *a

      Front view of wire harness connector

      (to Tire Pressure Warning ECU and Receiver)

      Disconnect the tire pressure warning ECU and receiver connector.

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

      Standard Voltage
      except AWL10R-BEXQHQ and GWL10R-BEXQBQ
      Tester Connection Switch Condition Specified Condition
      T32-1 (IG) - Body ground Power switch on (IG) 10 to 16 V
      Power switch off Below 1 V
      for AWL10R-BEXQHQ and GWL10R-BEXQBQ
      Tester Connection Switch Condition Specified Condition
      U22-1 (IG) - Body ground Power switch on (IG) 10 to 16 V
      Power switch off Below 1 V

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

      Standard Resistance
      except AWL10R-BEXQHQ and GWL10R-BEXQBQ
      Tester Connection Condition Specified Condition
      T32-12 (GND) - Body ground Always Below 1 Ω
      for AWL10R-BEXQHQ and GWL10R-BEXQBQ
      Tester Connection Condition Specified Condition
      U22-12 (GND) - Body ground Always Below 1 Ω
      Result
      Result Proceed to
      NG A
      OK (except AWL10R-BEXQHQ and GWL10R-BEXQBQ) B
      OK (for AWL10R-BEXQHQ and GWL10R-BEXQBQ) C

    A

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    B

    REPLACE TIRE PRESSURE WARNING ECU AND RECEIVER Click here

    C

    REPLACE TIRE PRESSURE WARNING ECU AND RECEIVER Click here