TIRE PRESSURE WARNING SYSTEM, Diagnostic DTC:C2128

DTC Code DTC Name
C2128 Auto ID Under Registration

DESCRIPTION

When ID registration is being performed via the automatic ID registration function of the tire pressure warning valve and transmitters, the tire pressure warning ECU and receiver outputs C2128 and the tire pressure warning light flashes for 1 minute. Afterward, the tire pressure warning light remains illuminated. When the tire pressure warning valve and transmitters receive the data from all tire pressure warning valve and transmitters with registered IDs, the tire pressure is judged to be normal and the tire pressure warning light turns off.

DTC No. Detection Item DTC Detection Condition Trouble Area Note
C2128 Auto ID Under Registration While ID registration is performed via the automatic ID registration function of the tire pressure warning valve and transmitter Vehicle stability control system -

PROCEDURE


  1. CHECK FOR DTC (VEHICLE STABILITY CONTROL SYSTEM)


    1. Turn the ignition switch to ON.

    2. Check if the vehicle stability control system DTC is output.

      for Hydraulic Brake Booster: Click here

      for Vacuum Brake Booster: Click here

      Tech Tips

      If DTC C2128 is output, vehicle stability control system DTCs may also have been detected. Check the vehicle stability control system first and after repairs have been completed, perform ID registration via the automatic ID registration function.

      Result
      Result Proceed to
      Vehicle stability control system DTC is not output A
      Vehicle stability control system DTC is output B

    B

    GO TO VEHICLE STABILITY CONTROL SYSTEM for Hydraulic Brake Booster: Click here
    GO TO VEHICLE STABILITY CONTROL SYSTEM for Vacuum Brake Booster: Click here

    A

  2. REGISTRATION OF TRANSMITTER ID (ID REGISTRATION VIA AUTOMATIC ID REGISTRATION FUNCTION)


    1. Turn the ignition switch off.

    2. Turn the ignition switch to ON.

    3. Perform ID registration for the tire pressure warning ECU and receiver (ID registration via the automatic ID registration function).

      Tech Tips

      Perform the following procedures within 1 trip and do not turn the ignition switch off.

      Result
      Proceed to
      NEXT

    NEXT

  3. READ VALUE USING GTS ([RAM] AUTO ID REGISTERED WHEEL JUDGMENT STATUS)


    1. Turn the ignition switch off.

    2. Connect the GTS to the DLC3.

    3. Turn the ignition switch to ON.

    4. Turn the GTS on.

    5. Enter the following menus: Chassis / Tire Pressure Monitor / Data List.

    6. According to the display on the GTS, display the ECU Data List.

      Click here

    7. Refer to the following chart and check the "[RAM] Auto ID Registered Wheel Judgment Status" of each transmitter.

      Chassis > Tire Pressure Monitor > Data List
      Tester Display Measurement Item Range Normal Condition Diagnostic Note
      [RAM] Auto ID Registered FL Wheel Judgment Status FL wheel registration condition (RAM) during automatic ID registration Fixed, Under a Judgment of Side by Side Car Influence or Under a Judgment, Not Registered Actual registration status Cleared each time the ignition switch is turned ON from off.
      [RAM] Auto ID Registered FR Wheel Judgment Status FR wheel registration condition (RAM) during automatic ID registration Fixed, Under a Judgment of Side by Side Car Influence or Under a Judgment, Not Registered Actual registration status Cleared each time the ignition switch is turned ON from off.
      [RAM] Auto ID Registered RL Wheel Judgment Status RL wheel registration condition (RAM) during automatic ID registration Fixed, Under a Judgment of Side by Side Car Influence or Under a Judgment, Not Registered Actual registration status Cleared each time the ignition switch is turned ON from off.
      [RAM] Auto ID Registered RR Wheel Judgment Status RR wheel registration condition (RAM) during automatic ID registration Fixed, Under a Judgment of Side by Side Car Influence or Under a Judgment, Not Registered Actual registration status Cleared each time the ignition switch is turned ON from off.
      [RAM] Auto ID Registered Spare Wheel Judgment Status Spare wheel registration condition (RAM) during automatic ID registration Fixed, Under a Judgment of Side by Side Car Influence or Under a Judgment, Not Registered Actual registration status Cleared each time the ignition switch is turned ON from off.
      Result
      Result Proceed to
      Displays either "[RAM] Auto ID Registered Wheel Judgment Status" data as " Under a Judgment of Side by Side Car Influence". A
      Displays all "[RAM] Auto ID Registered Wheel Judgment Status" data as "Under a Judgment of Side by Side Car Influence". B

    B

    REGISTRATION OF TRANSMITTER ID (ID REGISTRATION VIA GTS) Click here

    A

  4. REGISTRATION OF TRANSMITTER ID (ID REGISTRATION VIA GTS)


    1. Perform ID registration for the tire pressure warning ECU and receiver (ID registration via GTS).

      Click here

      Result
      Proceed to
      NEXT

    NEXT

    END Explain to customers that there is a high possibility that they traveled in parallel to another vehicle with the same type of tire pressure warning valve and transmitter during id registration via the automatic id registration function.

  5. REGISTRATION OF TRANSMITTER ID (ID REGISTRATION VIA GTS)


    1. Perform ID registration for the tire pressure warning ECU and receiver (ID registration via GTS).

      Click here

      Result
      Proceed to
      NEXT

    NEXT

    END END Explain to customers that it may take time for registration to complete depending on the driving conditions. END Identification may take longer than normal in the following driving environments. Vehicle is often stopped Vehicle is stopped for long period of time Vehicle is driven in reverse Vehicle was not stopped for 15 minutes or more before registration Vehicle was driven at 37 km/h (23 mph) or less for a long duration of time The ignition switch is turned from ON to off during ID registration