TIRE PRESSURE WARNING SYSTEM TC and CG Terminal Circuit

DTC Code DTC Name
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

C257854E07

PROCEDURE

  1. CHECK CAN COMMUNICATION SYSTEM

    1. Check the CAN communication system.

      for LHD with Central Gateway ECU:Click here

      for RHD with Central Gateway ECU:Click here

      for LHD without Central Gateway ECU:Click here

      for RHD without Central Gateway ECU:Click here

      CAN Bus Check

      OK

      The CAN communication system is normal.

      Result

      Proceed to

      OK

      NG
    NG

    GO TO CAN COMMUNICATION SYSTEM

    for LHD with Central Gateway ECU:Click here

    for RHD with Central Gateway ECU:Click here

    for LHD without Central Gateway ECU:Click here

    for RHD without Central Gateway ECU:Click here

    OK

  2. CHECK DTC OUTPUT (C2179/79)

    1. Clear the DTCs.

      Click here

      Chassis > Tire Pressure Monitor > Clear DTCs

    2. Turn the ignition switch off.

    3. Turn the ignition switch to ON.

    4. Check for DTCs.

      Click here

      Chassis > Tire Pressure Monitor > Trouble Codes

      OK

      DTC C2179/79 is not output.

      Result

      Proceed to

      OK

      NG
    NG

    GO TO DTC C2179/79

    Click here

    OK

  3. CHECK HARNESS AND CONNECTOR (TC of DLC3 - ECM)

    1. Disconnect the ECM A61*1 or A62*2 connector.

      • *1: for 2AD-FTV, 2AD-FHV

      • *2: for 2AR-FE, 3ZR-FAE, 3ZR-FE, 2WW

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

      Standard Resistance

      for 2AD-FTV, 2AD-FHV

      Tester Connection

      Condition

      Specified Condition

      G14-13 (TC) - A61-26 (TC)

      Always

      Below 1 Ω

      for 2AR-FE, 3ZR-FE (for K111, K111F)

      Tester Connection

      Condition

      Specified Condition

      G14-13 (TC) - A62-23 (TC)

      Always

      Below 1 Ω

      for 3ZR-FAE, 3ZR-FE (execept K111, K111F)

      Tester Connection

      Condition

      Specified Condition

      G14-13 (TC) - A62-33 (TC)

      Always

      Below 1 Ω

      for 2WW

      Tester Connection

      Condition

      Specified Condition

      G14-13 (TC) - A62-50 (TC)

      Always

      Below 1 Ω

    Result

    Proceed to

    OK

    NG
    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

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

    1. C207407C17

      *a

      Front view of DLC3

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

      Standard Resistance

      Tester Connection

      Condition

      Specified Condition

      G14-4 (CG) - Body ground

      Always

      Below 1 Ω

    Result

    Proceed to

    OK

    NG
    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  5. INSPECT DLC3 (TC VOLTAGE)

    1. Connect the ECM A61*1 or A62*2 connector.

      • *1: for 2AD-FTV, 2AD-FHV

      • *2: for 2AR-FE, 3ZR-FAE, 3ZR-FE, 2WW

    2. C207407C18

      *a

      Front view of DLC3

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

      Standard Voltage

      Tester Connection

      Switch Condition

      Specified Condition

      G14-13 (TC) - G14-4 (CG)

      Ignition switch ON

      11 to 14 V

      Result

      Proceed to

      OK

      NG
    OK

    PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE

    Click here

    NG

    REPLACE ECM

    for 2WW:Click here

    for 2AD-FHV:Click here

    for 2AD-FTV:Click here

    for 2AR-FE:Click here

    for 3ZR-FAE:Click here

    for 3ZR-FE:Click here