TIRE PRESSURE WARNING SYSTEM, Diagnostic DTC:C2179/79

DTC Code DTC Name
C2179/79 Tire Pressure Monitor ECU Communication Stop

DESCRIPTION

The main body ECU (network gateway ECU) sends signals to the tire pressure warning ECU and receiver via a direct line.

DTC No. DTC Detection Condition Trouble Area
C2179/79 Communication between the main body ECU (network gateway ECU) and tire pressure warning ECU and receiver is interrupted for 10 seconds or more.
  • Main body ECU (network gateway ECU)

  • Wire harness or connector

  • Tire pressure warning ECU and receiver

WIRING DIAGRAM

A004J2QE03
*a BPRG
*b Main Body ECU (Network Gateway ECU)
*c Tire Pressure Warning ECU and Receiver

CAUTION / NOTICE / HINT

Note


  • When replacing the tire pressure warning ECU and receiver, read the IDs stored in the old ECU using the GTS and write them down before removal.

  • It is necessary to perform initialization (See page ) after registration Click here of the transmitter IDs into the tire pressure warning ECU after the ECU has been replaced.

PROCEDURE


  1. CHECK HARNESS AND CONNECTOR (TIRE PRESSURE WARNING ECU AND RECEIVER - MAIN BODY ECU (NETWORK GATEWAY ECU))


    1. Disconnect the H28 tire pressure warning ECU and receiver connector and the D6 main body ECU (network gateway ECU) connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      H28-5 (BPRG) - D6-6 (PRG) Always Below 1 Ω
      H28-5 (BPRG) - Body ground Always 10 kΩ or higher

    NG
    OK
  2. REPLACE TIRE PRESSURE WARNING ECU AND RECEIVER


    1. Replace the tire pressure warning ECU and receiver Click here.


    NEXT
  3. REGISTRATION OF TRANSMITTER ID


    1. Perform registration Click here.


    NEXT
  4. PERFORM INITIALIZATION


    1. Perform initialization Click here.


    NEXT
  5. CHECK DTC OUTPUT


    1. Clear the DTCs Click here.

    2. Turn the ignition switch off.

    3. Turn the ignition switch to ON.

    4. Check for DTCs Click here.

      OK
      DTC C2179/79 is not output.

    OK
    NG