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

B004Q09E38
*a Main Body ECU (Multiplex Network Body ECU)
*b Tire Pressure Warning ECU and Receiver
*c Hybrid Vehicle Control ECU
*d CAN Communication Line

PROCEDURE


  1. CHECK CAN COMMUNICATION SYSTEM


    1. Check for DTCs.

      Click here

      Result
      Result Proceed to
      DTCs are not output. A
      DTCs are output. B

    B

    GO TO CAN COMMUNICATION SYSTEM Click here

    A

  2. CHECK DTC (C2179/79)


    1. Check if DTC C2179/79 is output.

      Click here


      Chassis > Tire Pressure Monitor > Trouble Codes
      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)


    1. Disconnect the F3 hybrid vehicle control ECU connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      F29-13 (TC) - F3-30 (TC) Always Below 1 Ω
      F29-13 (TC) or F3-30 (TC) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

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


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

      Standard Resistance
      Tester Connection Condition Specified Condition
      F29-4 (CG) - Body ground Always Below 1 Ω
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  5. INSPECT DLC3 TERMINAL VOLTAGE (TC VOLTAGE)


    1. Reconnect the F3 hybrid vehicle control ECU connector.

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      F29-13 (TC) - F29-4 (CG) Power switch on (IG) 11 to 14 V
      Result
      Proceed to
      OK
      NG

    OK

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

    NG

    REPLACE HYBRID VEHICLE CONTROL ECU Click here