TIRE PRESSURE WARNING SYSTEM, Diagnostic DTC:C2177/77

DTC Code DTC Name
C2177/77 Initialization not Completed

DESCRIPTION

Initialization is necessary if one of the following occurs:

  • The tire pressure warning ECU and receiver is replaced.

  • A tire pressure warning valve and transmitter is replaced.

  • Tires with a different tire standard pressure are installed.

  • The tires are rotated.

  • A new vehicle is delivered.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

C2177/77

Initialization not Completed

All conditions below are met:

  • During initialization

  • Tire pressure warning valve and transmitter is not in stop mode

  • Signal is not received from tire pressure warning valve and transmitter for 20 minutes or more

  • Vehicle speed is more than 37 km/h (23 mph) for a total of 20 minutes

  • Tire pressure warning valve and transmitter

  • Wire harness or connector

  • Tire pressure warning ECU and receiver

WIRING DIAGRAM

C257450E16

CAUTION / NOTICE / HINT

Note:

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

  • It is necessary to perform initialization (Click here) after registration (Click here) of the transmitter IDs into the tire pressure warning ECU and receiver if the ECU and/or one of the valve and transmitters has been replaced.

PROCEDURE

  1. CHECK FREQUENCY RECEIVING CONDITION

    1. Check that the vehicle is not located in an area such as described below:

      1. Facilities or devices that use similar radio frequencies are located in the vicinity of the vehicle.

        Tip:

        If the vehicle is located in an area such as the one described above, the tire pressure warning light may come on after blinking 1 minute only in a particular area due to interfering radio frequencies.

      2. Devices using similar radio frequencies are used in the vehicle.

        OK

        Facilities, or devices that use similar radio frequencies are not located in the vicinity of the vehicle.

        Tip:

        Radio transmissions may be interrupted due to the surroundings, or devices installed by the user.

    Result

    Proceed to

    OK

    NG
    NG

    CHECK IF ANY DEVICE IS INSTALLED BY USER

    OK

  2. PERFORM INITIALIZATION

    1. Perform initialization.

      Click here

    Result

    Proceed to

    NEXT
    NEXT

  3. CONFIRM TIRE INFLATION PRESSURE (DATA LIST)

    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. Check the values by referring to the table below.

      Chassis > Tire Pressure Monitor > Data List

      Tester Display

      Measurement Item

      Range

      Normal Condition

      Diagnostic Note

      ID 1 Tire Inflation Pressure

      ID1 tire inflation pressure

      min.: Absolute pressure (abs) / 0 kPa (0 kgf/cm2, 0 psi), Relative pressure (Gauge) / 0 kPa (0 kgf/cm2, 0 psi)

      max.: Absolute pressure (abs) / 480 kPa (4.9 kgf/cm2, 70 psi), Relative pressure (Gauge) / 380 kPa (3.9 kgf/cm2, 55 psi)

      Actual tire inflation pressure

      If N/A is displayed, data has not been received.*

      ID 2 Tire Inflation Pressure

      ID2 tire inflation pressure

      min.: Absolute pressure (abs) / 0 kPa (0 kgf/cm2, 0 psi), Relative pressure (Gauge) / 0 kPa (0 kgf/cm2, 0 psi)

      max.: Absolute pressure (abs) / 480 kPa (4.9 kgf/cm2, 70 psi), Relative pressure (Gauge) / 380 kPa (3.9 kgf/cm2, 55 psi)

      Actual tire inflation pressure

      If N/A is displayed, data has not been received.*

      ID 3 Tire Inflation Pressure

      ID3 tire inflation pressure

      min.: Absolute pressure (abs) / 0 kPa (0 kgf/cm2, 0 psi), Relative pressure (Gauge) / 0 kPa (0 kgf/cm2, 0 psi)

      max.: Absolute pressure (abs) / 480 kPa (4.9 kgf/cm2, 70 psi), Relative pressure (Gauge) / 380 kPa (3.9 kgf/cm2, 55 psi)

      Actual tire inflation pressure

      If N/A is displayed, data has not been received.*

      ID 4 Tire Inflation Pressure

      ID4 tire inflation pressure

      min.: Absolute pressure (abs) / 0 kPa (0 kgf/cm2, 0 psi), Relative pressure (Gauge) / 0 kPa (0 kgf/cm2, 0 psi)

      max.: Absolute pressure (abs) / 480 kPa (4.9 kgf/cm2, 70 psi), Relative pressure (Gauge) / 380 kPa (3.9 kgf/cm2, 55 psi)

      Actual tire inflation pressure

      If N/A is displayed, data has not been received.*

      ID 5 Tire Inflation Pressure

      ID5 tire inflation pressure

      min.: Absolute pressure (abs) / 0 kPa (0 kgf/cm2, 0 psi), Relative pressure (Gauge) / 0 kPa (0 kgf/cm2, 0 psi)

      max.: Absolute pressure (abs) / 480 kPa (4.9 kgf/cm2, 70 psi), Relative pressure (Gauge) / 380 kPa (3.9 kgf/cm2, 55 psi)

      Actual tire inflation pressure

      • If N/A is displayed, data has not been received.*

      • w/ Full Size Spare Tire
      Tip:

      • *: It may take a few minutes until the values are displayed.

      • When no "ID Tire Inflation Pressure" data has changed, reset the tire pressure to the appropriate specified value and rotate the tire 90 to 270 degrees. Then rapidly release the tire pressure and recheck the data.

      Chassis > Tire Pressure Monitor > Data List

      Tester Display

      ID 1 Tire Inflation Pressure

      ID 2 Tire Inflation Pressure

      ID 3 Tire Inflation Pressure

      ID 4 Tire Inflation Pressure

      ID 5 Tire Inflation Pressure

      Result

      Proceed to

      All tire pressure readings are equal to specified values.

      Tire pressure values are not displayed.
    All tire pressure readings are equal to specified values.

    END

    Tire pressure values are not displayed.

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