CONTINUOUSLY VARIABLE TRANSAXLE SYSTEM, Diagnostic DTC:P2767

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

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 change control.

DTC No.

DTC Detection Condition


  1. Diagnosis Condition

  2. Malfunction Status

  3. Malfunction Time

  4. Other

 Trouble Area
P2767

  1. Driving with shift lever in D and output shaft speed 300 rpm or more

  2. 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

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 set the DTC.

WIRING DIAGRAM

A005J1QE01

PROCEDURE


  1. 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 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.

      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.
      Result
      Result Proceed to
      Data display is not within Normal Condition range A
      Data display is within Normal Condition range B

    B

    REPLACE ECM Click here

    A

  2. INSPECT TRANSMISSION REVOLUTION SENSOR (NIN)


    1. A005GOSE02
      Text in Illustration
      *a

      Component without wire harness connected:

      (Transmission Revolution Sensor (NIN))

      Disconnect the B46 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 - 2 20°C (68°F) 560 to 680 Ω

    NG

    REPLACE TRANSMISSION REVOLUTION SENSOR (NIN) Click here

    OK

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


    1. Reconnect the B46 transmission revolution sensor (NIN) connector.

    2. Disconnect the B22 (for LHD) or B23 (for RHD) ECM connector.

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

      Standard Resistance (Check for Open) (for LHD)
      Tester Connection Condition Specified Condition
      B22-127 (NIN+) - B22-128 (NIN-) 20°C (68°F) 560 to 680 Ω
      Standard Resistance (Check for Open) (for RHD)
      Tester Connection Condition Specified Condition
      B23-127 (NIN+) - B23-128 (NIN-) 20°C (68°F) 560 to 680 Ω
      Standard Resistance (Check for Short) (for LHD)
      Tester Connection Condition Specified Condition
      B22-127 (NIN+) - Body ground) Always 10 kΩ or higher
      B22-128 (NIN-) - Body ground Always 10 kΩ or higher
      Standard Resistance (Check for Short) (for RHD)
      Tester Connection Condition Specified Condition
      B23-127 (NIN+) - Body ground) Always 10 kΩ or higher
      B23-128 (NIN-) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  4. REPLACE ECM


    1. Replace the ECM Click here.


    NEXT

  5. 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

      • Skid control computer (w/o VSC)

      • Oil pressure sensor

      • Deceleration sensor (w/o VSC)

      • Airbag sensor assembly (Yaw rate sensor) (w/ VSC)

    • 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.

    • 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.


    NEXT

    END