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 Electronically controlled brake system -

PROCEDURE


  1. CHECK FOR DTC (ELECTRONICALLY CONTROLLED BRAKE SYSTEM)


    1. Turn the power switch on (IG).

    2. Check if the electronically controlled brake system DTC is output.

      Click here


      Chassis > ABS/VSC/TRC > Trouble Codes

      Tech Tips

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

      Result
      Result Proceed to
      Electronically controlled brake system DTC is not output A
      Electronically controlled brake system DTC is output B

    B

    GO TO ELECTRONICALLY CONTROLLED BRAKE SYSTEM Click here

    A

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


    1. Turn the power switch off.

    2. Turn the power switch on (IG).

    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 power switch off.

      Result
      Proceed to
      NEXT

    NEXT

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


    1. Turn the power switch off.

    2. Connect the GTS to the DLC3.

    3. Turn the power switch on (IG).

    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


      Chassis > Tire Pressure Monitor > Data List
      Tester Display
      [RAM] Auto ID Registered FL Wheel Judgment Status
      [RAM] Auto ID Registered FR Wheel Judgment Status
      [RAM] Auto ID Registered RL Wheel Judgment Status
      [RAM] Auto ID Registered RR Wheel Judgment Status

    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 power switch is turned on (IG) 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 power switch is turned on (IG) 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 power switch is turned on (IG) 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 power switch is turned on (IG) 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 40 km/h (25 mph) or less for a long duration of time The power switch is turned from on (IG) to off during ID registration