AUTOMATIC TRANSMISSION SYSTEM, Diagnostic DTC:P072012, P072014, P072031

DTC Code DTC Name
P072012 Output Speed Sensor Circuit Short to Battery
P072014 Output Speed Sensor Circuit Short to Ground or Open
P072031 Output Speed Sensor No Signal

DESCRIPTION

The transmission revolution sensor (SP2) detects the output shaft rotation speed and sends it to the ECM.

Based on the transmission revolution sensor (NT) signal and the transmission revolution sensor (SP2) signal, the ECM controls engine torque and shift timing.

DTC No. Detection Item DTC Detection Condition Trouble Area MIL Memory Note
P072012 Output Speed Sensor Circuit Short to Battery When the engine switch is on (IG), the transmission revolution sensor (SP2) input voltage is higher than 1.8 V for 4.5 seconds or more (1-trip detection logic).

  • Harness and connector

  • Transmission wire

  • Transmission revolution sensor (SP2)

  • ECM

 Comes on DTC stored SAE: P077D
P072014 Output Speed Sensor Circuit Short to Ground or Open When the engine switch is on (IG), the transmission revolution sensor (SP2) input voltage is below 0.2 V for 4.5 seconds or more (1-trip detection logic).

  • Harness and connector

  • Transmission wire

  • Transmission revolution sensor (SP2)

  • ECM

 Comes on DTC stored SAE: P077C
P072031 Output Speed Sensor No Signal

All conditions are met for 5 seconds or more (1-trip detection logic):


  • Transmission revolution sensor (NT) value is 1500 rpm or more.

  • Vehicle speed is 10 km/h (6.22 mph) or more.

  • Shift state drive (D).

  • SP2 signal is not input.

  • Harness and connector

  • Transmission wire

  • Transmission revolution sensor (SP2)

  • ECM

 Comes on DTC stored SAE: P0722

MONITOR DESCRIPTION

The transmission revolution sensor (SP2) monitors the output shaft speed.

The ECM controls the gearshift point and the lock up timing based on the signals from the transmission revolution sensor (SP2) and throttle position sensor.

If the ECM detects no signal from the transmission revolution sensor (SP2) even while the vehicle is moving, it will determine the transmission revolution sensor (SP2) is malfunctioning, illuminate the MIL and store a DTC.

CONFIRMATION DRIVING PATTERN

Tech Tips

After repair has been completed, clear the DTC and then check that the vehicle has returned to normal by performing the following All Readiness check procedure.


  1. Connect the GTS to the DLC3.

  2. Turn the engine switch on (IG) and turn the GTS on.

  3. Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).

  4. Turn the engine switch off and wait for at least 30 seconds.

  5. Turn the engine switch on (IG) and turn the GTS on.

  6. Perform the D Position Shift Test inspection in Road Test.

    Click here

  7. Enter the following menus: Powertrain / Transmission / Utility / All Readiness.

  8. Input the DTC: P072012, P072014 or P072031.

  9. Check the DTC judgment result.

    GTS Display Description
    NORMAL

    • DTC judgment completed

    • System normal
    ABNORMAL

    • DTC judgment completed

    • System abnormal
    INCOMPLETE

    • DTC judgment not completed

    • Perform driving pattern after confirming DTC enabling conditions
    N/A

    • Unable to perform DTC judgment

    • Number of DTCs which do not fulfill DTC preconditions has reached ECU memory limit

    Tech Tips


    • If the judgment result shows NORMAL, the system is normal.

    • If the judgment result shows ABNORMAL, the system has a malfunction.

    • If the judgment result shows INCOMPLETE or N/A, perform the Confirmation Driving Pattern and check the DTC judgment result again.

WIRING DIAGRAM

B000V1ME06
*a Transmission Revolution Sensor (SP2)
*b Transmission Wire

CAUTION / NOTICE / HINT

Note

Perform registration and/or initialization when parts related to the automatic transmission are replaced.

Click here


  1. DATA LIST

    Tech Tips

    Using the GTS to read the Data List allows the values or states of switches, sensors, actuators and other items to be read without removing any parts. This non-intrusive inspection can be very useful because intermittent conditions or signals may be discovered before parts or wiring is disturbed. Reading the Data List information early in troubleshooting is one way to save diagnostic time.

    Note

    In the table below, the values listed under "Normal Condition" are reference values. Do not depend solely on these reference values when deciding whether a part is faulty or not.


    1. Warm up the engine.

    2. Turn the engine switch off.

    3. Connect the GTS to the DLC3.

    4. Turn the engine switch on (IG).

    5. Turn the GTS on.

    6. Enter the following menus: Powertrain / Transmission / Data List / Speed (SP2).

    7. Read the Data List according to the display on the GTS.


      Powertrain > Transmission > Data List
      Tester Display Measurement Item Range Normal Condition Diagnostic Note
      Speed (SP2) Output shaft speed

      Min.: 0 km/h (0 mph)

      Max.: 255 km/h (158 mph)

      0 km/h (0 mph): Vehicle stopped

      (Output shaft speed is equal to vehicle speed)

      		 -

      Powertrain > Transmission > Data List
      Tester Display
      Speed (SP2)

      Tech Tips


      • Speed (SP2) is always 0 while driving: Open or short in the sensor or circuit.

      • The Speed (SP2) value displayed on the GTS is much lower than the actual vehicle speed: Sensor malfunction, improper installation, or intermittent connection malfunction of the circuit.

PROCEDURE


  1. READ VALUE USING GTS (SPEED (SP2) AND SP2 SENSOR VOLTAGE)


    1. Connect the GTS to the DLC3.

    2. Turn the engine switch on (IG).

    3. Turn the GTS on.

    4. Enter the following menus: Powertrain / Transmission / Data List / Speed (SP2), SP2 Sensor Voltage.

    5. Read the Data List according to the display on the GTS.


      Powertrain > Transmission > Data List
      Tester Display Measurement Item Range Normal Condition Diagnostic Note
      Speed (SP2) Output shaft speed

      Min.: 0 km/h (0 mph)

      Max.: 255 km/h (158 mph)

      0 km/h (0 mph): Vehicle stopped

      (Output shaft speed is equal to vehicle speed)

      		 -
      SP2 Sensor Voltage SP2 sensor voltage

      Min.: 0.000 V

      Max.: 4.999 V

      		 0.2 to 1.8 V: Idling -

      Powertrain > Transmission > Data List
      Tester Display
      Speed (SP2)
      SP2 Sensor Voltage

      Tech Tips

      If the Data List updates slowly, perform measurement after selecting only the "Speed (SP2)" and "SP2 Sensor Voltage" items.

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

    A

    GO TO STEP 5 Click here

    B

  2. CHECK TRANSMISSION REVOLUTION SENSOR TERMINAL (SP2 TERMINAL)


    1. B000XTIC80
      *a

      Front view of wire harness connector

      (to Transmission Wire)

      Disconnect the transmission wire connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      G2-30 (SP2O) - Body ground Always 99 to 101 Ω

    3. Turn the engine switch on (IG).

    4. Measure the voltage according to the value(s) in the table below.

      Standard Voltage
      Tester Connection Condition Specified Condition
      G2-29 (SP2B) - Body ground Engine switch on (IG) 11 to 14 V
      Result
      Proceed to
      OK
      NG

    NG

    CHECK HARNESS AND CONNECTOR (TRANSMISSION WIRE - ECM) Click here

    OK

  3. INSPECT TRANSMISSION WIRE (TRANSMISSION REVOLUTION SENSOR (SP2))


    1. B000UL2C02
      *a

      Front view of wire harness connector

      (to Transmission Revolution Sensor (SP2))
      *b

      Component without harness connected

      (Transmission Wire)

      Disconnect the transmission revolution sensor (SP2) connector.

      Click here

    2. Disconnect the transmission wire connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      Terminal 2 of the transmission revolution sensor (SP2) connector - 29 (SP2B) Always Below 1 Ω
      Terminal 1 of the transmission revolution sensor (SP2) connector - 30 (SP2O) Always Below 1 Ω
      Terminal 2 of the transmission revolution sensor (SP2) connector or 29 (SP2B) - Body ground Always 10 kΩ or higher
      Terminal 1 of the transmission revolution sensor (SP2) connector or 30 (SP2O) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE TRANSMISSION REVOLUTION SENSOR (SP2) Click here

    NG

    REPAIR OR REPLACE TRANSMISSION WIRE Click here

  4. CHECK HARNESS AND CONNECTOR (TRANSMISSION WIRE - ECM)


    1. Disconnect the G2 transmission wire connector.

    2. Disconnect the G42 ECM connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      G2-29 (SP2B) - G42-117 (SP2B) Always Below 1 Ω
      G2-30 (SP2O) - G42-116 (SP2O) Always Below 1 Ω
      G2-29 (SP2B) or G42-117 (SP2B) - Body ground Always 10 kΩ or higher
      G2-30 (SP2O) or G42-116 (SP2O) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  5. REPLACE ECM


    1. Replace the ECM.

      Click here

      Result
      Proceed to
      NEXT

    NEXT

    PERFORM A/T CODE REGISTRATION Click here