CONTINUOUSLY VARIABLE TRANSAXLE SYSTEM, Diagnostic DTC:P276531

DTC Code DTC Name
P276531 Input/Turbine Speed Sensor "B" No Signal

DESCRIPTION

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

DTC No. Detection Item DTC Detection Condition Trouble Area MIL Memory Note
P276531 Input/Turbine Speed Sensor "B" No Signal While the vehicle is driven with the shift lever in D, and the output shaft speed is 300 rpm or more (vehicle speed is approximately 7 km/h (4.375 mph) or more), the speed indicated by the transmission revolution sensor (NIN) is less than 300 rpm for 2 seconds (1 trip detection logic).

  • Wire harness or connector

  • Transmission revolution sensor (NIN)

  • ECM

 Comes on DTC stored

SAE Code:

P2767

MONITOR DESCRIPTION

The ECM receives a signal from the transmission revolution sensor (NIN) installed to 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 transmission revolution sensor (NIN) even while the vehicle is moving, it will determine that there is a malfunction in the transmission revolution sensor (NIN), illuminate the MIL and store this DTC.

WIRING DIAGRAM

A001XQBE12
*a Transmission Revolution Sensor (NIN)

CAUTION / NOTICE / HINT

Note


  • Perform initialization after replacing any parts related to the continuously variable transaxle system.

    Click here

  • Check that no DTCs are stored after performing initialization.

    Click here

Tech Tips

After performing repair, clear the DTCs and perform the following procedure to check that DTCs are not output.


  1. Drive the vehicle for 2 seconds or more at 7 km/h (4.375 mph) or more with the shift lever in D.

  2. Check for DTCs again.

    Click here

PROCEDURE


  1. READ VALUE USING GTS (ENGINE SPEED, NIN SENSOR SPEED AND LOCK UP STATUS)


    1. Connect the GTS to the DLC3.

    2. Turn the ignition switch to ON.

    3. Turn the GTS on.

    4. Enter the following menus: Powertrain / Transmission / Data List.


      Powertrain > Transmission > Data List
      Tester Display
      Engine Speed
      NIN Sensor Speed
      Lock Up Status

    5. According to the display on the GTS, read the Data List.


      Powertrain > Transmission > Data List
      Tester Display Measurement Item Range Normal Condition Diagnostic Note
      Engine Speed Engine speed

      Min.: 0 rpm

      Max.: 16383 rpm

      		 680 to 780 rpm: Idling (shift lever in N, engine warmed up and A/C switch off) When the crankshaft position sensor is malfunctioning, "Engine Speed" is approximately 0 rpm or varies greatly from the actual engine speed.
      NIN Sensor Speed Primary pulley speed (NIN)

      Min.: 0 rpm

      Max.: 12750 rpm

      • 0 rpm: Vehicle stopped

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

      		 Data is displayed in increments of 50 rpm.
      Lock Up Status Lock-up OFF or ON

      • ON: Lock-up operating

      • OFF: Lock-up not operating

      		 -
      Result
      Result Proceed to
      Data List value is not normal A
      Data List value is normal B

    B

    REPLACE ECM Click here

    A

  2. INSPECT TRANSMISSION REVOLUTION SENSOR (NIN)


    1. A001SHYC07
      *a

      Component without harness connected

      (Transmission Revolution Sensor (NIN))

      Disconnect the C45 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

    3. Connect the C45 transmission revolution sensor (NIN) connector.

      Result
      Proceed to
      OK
      NG

    NG

    REPLACE TRANSMISSION REVOLUTION SENSOR (NIN) Click here

    OK

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


    1. A001VESC23
      *a

      Front view of wire harness connector

      (to ECM)

      Disconnect the ECM connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      C62-44 (NIN+) - C62-43 (NIN-) 20°C (68°F) 560 to 680 Ω
      C62-44 (NIN+) - Body ground and other terminals Always 10 kΩ or higher
      C62-43 (NIN-) - Body ground and other terminals Always 10 kΩ or higher

    3. Connect the ECM connector.

      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR (TRANSMISSION REVOLUTION SENSOR (NIN) - ECM)

    OK

  4. REPLACE ECM


    1. Replace the ECM.

      Click here

      Result
      Proceed to
      NEXT

    NEXT

    PERFORM INITIALIZATION Click here

  5. REPLACE ECM


    1. Replace the ECM.

      Click here

      Result
      Proceed to
      NEXT

    NEXT

    PERFORM INITIALIZATION Click here