TIRE PRESSURE WARNING SYSTEM Tire Pressure Warning Light Circuit

DESCRIPTION

If the ECU detects trouble, the tire pressure warning light blinks (illuminates after blinking for 1 minute) and tire pressure monitoring is canceled at the same time. At this time, the ECU stores a DTC in the memory.

Connect terminals TC and CG of the DLC3 to make the tire pressure warning light blink and output the DTC.

INSPECTION PROCEDURE

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 Click here after registration Click here of the transmitter IDs into the tire pressure warning ECU and receiver if the ECU has been replaced.

PROCEDURE


  1. CHECK CAN COMMUNICATION LINE


    1. Turn the power switch off.

    2. Connect the GTS to the DLC3.

    3. Turn the power switch on (IG) and turn the GTS on.

    4. Enter the following menus: "CAN Bus Check" from the "System Select" screen.

    5. Check the CAN communication system (for LHD: Click here, for RHD: Click here.

      OK
      The CAN communication system is normal.
      Result
      Result Proceed to
      OK A
      NG (for LHD) B
      NG (for RHD) C

    B

    GO TO CAN COMMUNICATION SYSTEM Click here

    C

    GO TO CAN COMMUNICATION SYSTEM Click here

    A

  2. CHECK OPERATION OF TIRE PRESSURE WARNING LIGHT (ACTIVE TEST)


    1. Turn the power switch off.

    2. Connect the GTS to the DLC3.

    3. Turn the power switch on (IG) and turn the GTS on.

    4. Enter the following menus: Body Electrical / Combination Meter / Active Test.

    5. Check the condition of the tire pressure warning light by operating the GTS.

      Combination Meter
      Tester Display Test Part Control Range
      Indicat. Tire Pressure Warning System Tire Pressure Warning Light OFF or ON
      OK
      The warning light turns on when operating the GTS.

    NG

    GO TO METER / GAUGE SYSTEM Click here

    OK

    REPLACE TIRE PRESSURE WARNING ECU AND RECEIVER Click here