SFI SYSTEM(w/ Canister Pump Module), Diagnostic DTC:P01052A

DTC Code DTC Name
P01052A Manifold Absolute Pressure / Barometric Pressure Sensor Signal Stuck in Range

DESCRIPTION

Refer to DTC P010511.

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DTC No. Detection Item DTC Detection Condition Trouble Area MIL Memory Note
P01052A Manifold Absolute Pressure / Barometric Pressure Sensor Signal Stuck in Range Intake manifold pressure measured after engine start drops by less than 2 kPa [0.29 psi] compared to the intake manifold pressure (atmospheric pressure) measured before engine start (2 trip detection logic).

  • Intake system

  • Manifold absolute pressure sensor

 Comes on DTC stored SAE: P0106

MONITOR DESCRIPTION

When the intake manifold pressure measured after engine start drops by less than 2 kPa [0.29 psi] compared to the intake manifold pressure (atmospheric pressure) measured before engine start, the ECM interprets this as a malfunction of the manifold absolute pressure sensor and stores DTC P01052A.

MONITOR STRATEGY

Frequency of Operation Continuous

CONFIRMATION DRIVING PATTERN


  1. Connect the GTS to the DLC3.

  2. Turn the power 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 power switch off and wait for at least 30 seconds.

  6. Turn the power switch on (IG).

  7. Turn the GTS on.

  8. Put the engine in Inspection Mode (2WD for measuring Exhaust Gas).

    Click here

  9. Start the engine and warm it up until the engine coolant temperature is 75°C (167°F) or higher.

  10. Move the shift lever to N.

  11. Idle the engine for 10 seconds or more [A].

  12. Enter the following menus: Powertrain / Engine / Trouble Codes [B].

  13. 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.

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

  15. Input the DTC: P01052A.

  16. 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 shows NORMAL, the system is normal.

    • If the judgment result shows ABNORMAL, the system is malfunctioning.

    • If the judgment result shows INCOMPLETE, perform steps [A] and [B] again.

CAUTION / NOTICE / HINT

Note


  • Vehicle Control History may be stored in the hybrid vehicle control ECU if the engine is malfunctioning. Certain vehicle condition information is recorded when Vehicle Control History is stored. Reading the vehicle conditions recorded in both the freeze frame data and Vehicle Control History can be useful for troubleshooting.

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    (Select Powertrain in Health Check and then check the time stamp data.)

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  • If any "Engine Malfunction" Vehicle Control History item has been stored in the hybrid vehicle control ECU, make sure to clear it. However, as all Vehicle Control History items are cleared simultaneously, if any Vehicle Control History items other than "Engine Malfunction" are stored, make sure to perform any troubleshooting for them before clearing Vehicle Control History.

    Click here

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 P01052A)


    1. Connect the GTS to the DLC3.

    2. Turn the power switch on (IG).

    3. Turn the GTS on.

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

    5. Read the DTCs.


      Powertrain > Engine > Trouble Codes
      Result
      Result Proceed to
      DTC P01052A is output A
      DTC P01052A and other DTCs are output B

      Tech Tips

      If any DTCs other than P01052A are output, troubleshoot those DTCs first.


    B

    GO TO DTC CHART Click here

    A

  2. READ VALUE USING GTS (INTAKE MANIFOLD ABSOLUTE PRESSURE)


    1. Connect the GTS to the DLC3.

    2. Turn the power switch on (IG).

    3. Turn the GTS on.

    4. Enter the following menus: Powertrain / Engine / Data List / Intake Manifold Absolute Pressure and Engine Independent.


      Powertrain > Engine > Data List
      Tester Display
      Intake Manifold Absolute Pressure
      Engine Independent

    5. Read the value of Intake Manifold Absolute Pressure.

    6. Put the engine in Inspection Mode (2WD for measuring Exhaust Gas).


      Powertrain > Hybrid Control > Utility
      Tester Display
      Inspection Mode

    7. Start the engine.

    8. Confirm that the value of Data List item Engine Independent is "Operate" then check the value of Intake Manifold Absolute Pressure.

      Standard
      Engine Condition GTS Display
      Engine Independent Intake Manifold Absolute Pressure
      Power switch on (IG) (Engine stopped) - 80 to 110 kPa (11.6 to 15.95 psi)
      Idling Operate 20 to 40 kPa (2.9 to 5.8 psi)

      Tech Tips

      If the value of Data List item Engine Independent is "Not Opr" when the engine is idling, charge control is being performed. Check the Intake Manifold Absolute Pressure after charge control is complete ("Operate" is displayed).

      Result
      Proceed to
      OK
      NG

    OK

    CHECK FOR INTERMITTENT PROBLEMS Click here

    NG

  3. CHECK INTAKE SYSTEM


    1. Check the intake system for vacuum leaks.

      Click here

      OK
      No leaks from intake system.

      Tech Tips

      Perform "Inspection After Repair" after repairing or replacing the intake system.

      Click here

      Result
      Proceed to
      OK
      NG

    OK

    REPLACE MANIFOLD ABSOLUTE PRESSURE SENSOR Click here

    NG

    REPAIR OR REPLACE INTAKE SYSTEM