SFI SYSTEM(w/ Canister Pump Module), Diagnostic DTC:P071531

DTC Code DTC Name
P071531 Input/Turbine Speed Sensor "A" No Signal

DESCRIPTION

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

DTC No. Detection Item DTC Detection Condition Trouble Area MIL Memory Note
P071531 Input/Turbine Speed Sensor "A" No Signal No transmission revolution sensor (NT) signal to the main CPU while running ECM Comes on DTC stored SAE: P0717

MONITOR DESCRIPTION

The NT signal is input from the transmission revolution sensor (NT) to the ECM (main CPU and transmission control ECU) while the vehicle is driven. When the NT signal is not input to the main CPU only while the vehicle is driven, a malfunction in an internal ECM circuit is judged, the MIL is illuminated and a DTC is stored.

MONITOR STRATEGY

Required Sensors/Components Transmission revolution sensor (NT)
Frequency of Operation Continuous

CONFIRMATION DRIVING PATTERN


  1. Connect the GTS to the DLC3.

  2. Turn the engine switch on (IG).

  3. Turn the GTS on.

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

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

  6. Turn the engine switch on (IG).

  7. Turn the GTS on.

  8. Drive the vehicle at approximately 30 km/h (18.65 mph) for 30 seconds or more.

  9. Enter the following menus: Powertrain / Engine / Trouble Codes.

  10. Read the pending DTCs.

    Tech Tips


    • If a pending DTC is output, the system is malfunctioning.

    • If a pending DTC is not output, perform the following procedure.

  11. Enter the following menus: Powertrain / Engine / Utility / All Readiness.

  12. Input the DTC: P071531.

  13. 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

    Tech Tips


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

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

CAUTION / NOTICE / HINT

Tech Tips

Read Freeze Frame Data using the GTS. The ECM records vehicle and driving condition information as Freeze Frame Data the moment a DTC is stored. When troubleshooting, Freeze Frame Data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, if the air fuel ratio was lean or rich, and other data from the time the malfunction occurred.

PROCEDURE


  1. CHECK ANY OTHER DTCS OUTPUT (IN ADDITION TO DTC P071531)


    1. Connect the GTS to the DLC3.

    2. Turn the engine switch on (IG).

    3. Turn the GTS on.

    4. Enter the following menus: System Select / Health Check.

    5. Read the DTCs.

      Result
      Result Proceed to
      DTC P071531 is output A
      DTC P071531 and other DTCs are output B

      Tech Tips

      If any DTCs other than P071531 are output, troubleshoot those DTCs first.


    A

    REPLACE ECM Click here

    B

    GO TO DTC CHART