TIRE PRESSURE WARNING SYSTEM ECU Power Source Circuit

DESCRIPTION

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

WIRING DIAGRAM

A01HTXEE02

INSPECTION PROCEDURE

Note


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

  • It is necessary to perform 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 (TIRE PRESSURE WARNING ECU AND RECEIVER - AUXILIARY BATTERY AND BODY GROUND)


    1. A01HSX2E12
      Text in Illustration
      *A w/o Intuitive Parking Assist System
      *B w/ Intuitive Parking Assist System
      *a

      Front view of wire harness connector

      (to Tire Pressure Warning ECU and Receiver)

      Disconnect the tire pressure warning ECU and receiver O33 or N41 connector.

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition

      O33-1 (IG) - Body ground*1

      N41-1 (IG) - Body ground*2

      		 Power switch on (IG) 10 to 16 V
      Power switch off Below 1 V

      • *1: w/o Intuitive Parking Assist System

      • *2: w/ Intuitive Parking Assist System

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

      Standard Resistance
      Tester Connection Condition Specified Condition

      O33-12 (GND) - Body ground*1

      N41-12 (GND) - Body ground*2

      		 Always Below 1 Ω

      • *1: w/o Intuitive Parking Assist System

      • *2: w/ Intuitive Parking Assist System


    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

    REPLACE TIRE PRESSURE WARNING ECU AND RECEIVER Click here