TIRE PRESSURE WARNING SYSTEM ECU Power Source Circuit

DESCRIPTION

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

WIRING DIAGRAM

A01X30GE07

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. A01X5ZXE02
      Text in Illustration
      *A w/o Front Antenna
      *B w/ Front Antenna
      *a

      Front view of wire harness connector

      (to Tire Pressure Warning ECU and Receiver)

      Disconnect the L65*1 or L75*2 tire pressure warning ECU and receiver connector.

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition

      L65-1 (IG) - Body ground*1

      L75-1 (IG) - Body ground*2

      		 Ignition switch ON 10 to 16 V
      Ignition switch off Below 1 V

      • *1: w/o Front Antenna

      • *2: w/ Front Antenna

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

      Standard Resistance
      Tester Connection Condition Specified Condition

      L65-12 (GND) - Body ground*1

      L75-12 (GND) - Body ground*2

      		 Always Below 1 Ω

      • *1: w/o Front Antenna

      • *2: w/ Front Antenna


    OK

    REPLACE TIRE PRESSURE WARNING ECU AND RECEIVER Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR