TIRE PRESSURE WARNING SYSTEM TC and CG Terminal Circuit

DESCRIPTION

DTC output mode is set by connecting terminals 13 (TC) and 4 (CG) of the DLC3. The DTCs are indicated by the blinking of the tire pressure warning light.

WIRING DIAGRAM

A01FTAYE05

INSPECTION PROCEDURE

PROCEDURE


  1. CHECK CAN COMMUNICATION SYSTEM


    1. Check if a CAN communication system DTC is output (for LHD: Click here, for RHD: Click here.

      Result
      Result Proceed to
      DTC is not output. A
      DTC is output (for LHD). B
      DTC is output (for RHD). 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 - POWER MANAGEMENT CONTROL ECU)


    1. Disconnect the power management control ECU N92 connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      N20-13 (TC) - N92-8 (TC) Always Below 1 Ω

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

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


    1. A01FT4CE65
      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
      N20-4 (CG) - Body ground Always Below 1 Ω

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  5. INSPECT DLC3 (TC VOLTAGE)


    1. A01FT4CE66
      Text in Illustration
      *a Front view of DLC3

      Connect the power management control ECU connector.

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      N20-13 (TC) - N20-4 (CG) Power switch on (IG) 11 to 14 V

    NG

    REPLACE POWER MANAGEMENT CONTROL ECU Click here

    OK

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