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CONTINUOUSLY VARIABLE TRANSAXLE SYSTEM, Diagnostic DTC:P2767

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DTC Code DTC Name
P2767 Input / Turbine Speed Sensor "B" Circuit No Signal
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DESCRIPTION

The ECM detects the input shaft rotation speed based on the signal from the primary pulley speed sensor (transmission revolution sensor (NIN)) and performs gear ratio control.

DTC Code

DTC Detection Condition


  1. Diagnosis Condition

  2. Malfunction Status

  3. Malfunction Time

  4. Other

 Trouble Area
P2767

  1. The vehicle is driven with the shift lever in D, the output shaft speed is 300 rpm or more and the vehicle speed is approx. 7 km/h (4.3 mph).

  2. The transmission revolution sensor (NIN) value is less than 300 rpm.

  3. 2 seconds

  4. 1 trip detection logic

  • Open or short in transmission revolution sensor (NIN) circuit

  • Transmission revolution sensor (NIN)

  • ECM
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MONITOR DESCRIPTION

The ECM receives a signal from the primary pulley speed sensor (transmission revolution sensor (NIN)) installed in the continuously variable transaxle and determines the input shaft speed in order to control the gear ratio. If the ECM detects no signal from the primary pulley speed sensor even while the vehicle is moving, it will conclude that there is a malfunction in the primary pulley speed sensor. The ECM will illuminate the MIL and store the DTC.

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WIRING DIAGRAM

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INSPECTION PROCEDURE

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PROCEDURE


  1. Click here

    READ VALUE USING INTELLIGENT TESTER (SPD (NIN))


    1. Connect the intelligent tester to the DLC3.

    2. Turn the ignition switch to ON.

    3. Turn the intelligent tester on.

    4. Enter the following menus: Powertrain / Engine and ECT / Data List.

    5. In accordance with the display on the tester, read the Data List.

      Table 1. Engine and ECT
      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      SPD (NIN)

      Primary pulley speed (NIN)/

      min.: 0 rpm

      max.: 12750 rpm

      • Vehicle stopped: 0 rpm

      • Lock-up on (After warming up engine): Primary pulley speed (NIN) equal to engine speed

      		 Data is displayed in increments of 50 rpm.
      Table 2. Result
      Result Proceed to
      Data displayed is not as specified under Normal Condition A
      Data displayed is as specified under Normal Condition B

  2. Click here

    INSPECT TRANSMISSION REVOLUTION SENSOR (NIN)


    1. A01INBHE01

      Disconnect the transmission revolution sensor (NIN) connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      1 (NIN-) - 2 (NIN+) 20°C (68°F) 560 to 680 Ω
      Table 3. Text in Illustration
      *1

      Component without harness connected

      (Transmission Revolution Sensor (NIN))

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    CHECK HARNESS AND CONNECTOR (TRANSMISSION REVOLUTION SENSOR (NIN) - ECM)


    1. A01IUJYE47

      Disconnect the ECM connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      C68-100 (NIN-) - C68-122 (NIN+) 20°C (68°F) 560 to 680 Ω
      C68-100 (NIN-) - Body ground Always 10 kΩ or higher
      C68-122 (NIN+) - Body ground Always 10 kΩ or higher
      Table 4. Text in Illustration
      *1

      Front view of wire harness connector

      (to ECM)

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    REPLACE ECM


    1. Replace the ECM (Click here).


  5. Click here

    PERFORM INITIALIZATION

    Note:

    • Performing reset memory will clear the learned values of both the yaw rate sensor (deceleration sensor 0 point calibration) and CVT oil pressure (CVT oil pressure calibration). Make sure to perform reset memory, yaw rate sensor 0 point calibration and CVT oil pressure calibration when replacing any of the parts shown in the following table:

      Replaced Part

      • Continuously variable transaxle assembly

      • ECM

      • Oil pressure sensor

      • Yaw rate sensor

    • After performing reset memory, always perform yaw rate sensor (deceleration sensor 0 point) calibration first, and then CVT oil pressure calibration.

    • Always perform 0 point calibration with the vehicle on level ground (inclination: 0 +/-0.25°).

    • Do not shake or vibrate the vehicle during 0 point calibration.


    1. Using the intelligent tester, perform reset memory, deceleration sensor 0 point calibration and CVT oil pressure calibration (Click here).

    2. Check that no DTC is stored.


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    END

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    REPLACE ECM


    1. Replace the ECM (Click here).


  8. Click here

    PERFORM INITIALIZATION

    Note:

    • Performing reset memory will clear the learned values of both the yaw rate sensor (deceleration sensor 0 point calibration) and CVT oil pressure (CVT oil pressure calibration). Make sure to perform reset memory, yaw rate sensor 0 point calibration and CVT oil pressure calibration when replacing any of the parts shown in the following table:

      Replaced Part

      • Continuously variable transaxle assembly

      • ECM

      • Oil pressure sensor

      • Yaw rate sensor

    • After performing reset memory, always perform yaw rate sensor (deceleration sensor 0 point) calibration first, and then CVT oil pressure calibration.

    • Always perform 0 point calibration with the vehicle on level ground (inclination: 0 +/-0.25°).

    • Do not shake or vibrate the vehicle during 0 point calibration.


    1. Using the intelligent tester, perform reset memory, deceleration sensor 0 point calibration and CVT oil pressure calibration (Click here).

    2. Check that no DTC is stored.


  9. Click here

    END

  10. Click here

    REPLACE TRANSMISSION REVOLUTION SENSOR (NIN)Click here

  11. Click here

    REPAIR OR REPLACE HARNESS OR CONNECTOR