TIRE PRESSURE WARNING SYSTEM TC and CG Terminal Circuit

DESCRIPTION

Tire pressure warning system DTCs can be checked by connecting terminals 13 (TC) and 4 (CG) of the DLC3. The DTCs are indicated by blinking the tire pressure warning light.

WIRING DIAGRAM

B005Z7OE07
*a Main Body ECU (Multiplex Network Body ECU)
*b Tire Pressure Warning ECU and Receiver
*c Hybrid Vehicle Control ECU Assembly
*d CAN Communication Line

PROCEDURE


  1. CHECK CAN COMMUNICATION SYSTEM


    1. Check if CAN communication system DTCs are output (See page for with Central Gateway ECU, Click here for without Central Gateway ECU).

      Result
      Result Proceed to
      DTCs are not output. A
      DTCs are output (w/ Central Gateway ECU). B
      DTCs are output (w/o Central Gateway ECU). C

    B

    GO TO CAN COMMUNICATION SYSTEM Click here

    C

    GO TO CAN COMMUNICATION SYSTEM Click here

    A

  2. CHECK DTC (C2179/79)


    1. Check if DTC C2179/79 is output Click here.

      Result
      Result Proceed to
      DTC C2179/79 is not output. A
      DTC C2179/79 is output. B

    B

    GO TO DTC C2179/79 Click here

    A

  3. CHECK HARNESS AND CONNECTOR (TC of DLC3 - HYBRID VEHICLE CONTROL ECU ASSEMBLY AND ECM)


    1. Disconnect the L6 hybrid vehicle control ECU assembly connector.

    2. Disconnect the A57 ECM connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      L61-13 (TC) - L6-28 (TC) Always Below 1 Ω
      L61-13 (TC) - A57-7 (TC) Always Below 1 Ω
      L61-13 (TC), L6-28 (TC) or A57-7 (TC) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  4. CHECK HARNESS AND CONNECTOR (CG of DLC3 - BODY GROUND)


    1. B005YZJE01
      Text in Illustration
      *a Front view of DLC3

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      L61-4 (CG) - Body ground Always Below 1 Ω

    OK

    PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR