TIRE PRESSURE WARNING SYSTEM ECU Power Source Circuit

DESCRIPTION

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

WIRING DIAGRAM

A005K6RE02

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 and/or one of the valve and transmitters 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 (POWER SOURCE OF TIRE PRESSURE WARNING ECU AND RECEIVER)


    1. Disconnect the K37 tire pressure warning ECU and receiver connector.

    2. A005LG7E01
      Text in Illustration
      *A w/o Entry and Start System
      *a

      Front view of wire harness connector

      (to Tire Pressure Warning ECU and Receiver)

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      K37-1 (IG) - Body ground Ignition switch ON 11 to 14 V
      Ignition switch off Below 1 V
      K37-7 (+B)* - Body ground Always 11 to 14 V

      • *: w/o Entry and Start System

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      K37-12 (GND) - Body ground Always Below 1 Ω

    OK

    REPLACE TIRE PRESSURE WARNING ECU AND RECEIVER Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR