ECD SYSTEM, Diagnostic DTC:P0105

DTC Code DTC Name
P0105 Manifold Absolute Pressure / Barometric Pressure Circuit

DESCRIPTION

The manifold absolute pressure sensor generates voltage by the vacuum value as shown in the illustration. This voltage of the manifold absolute pressure sensor is one of the factors used to decide the injection volume and injection timing.

B003PW7E02
DTC No. Detection Item DTC Detection Condition Trouble Area MIL Memory
P0105 Manifold Absolute Pressure / Barometric Pressure Circuit Open or short in manifold absolute pressure sensor circuit for 2 seconds or more.

  • Open or short in manifold absolute pressure sensor circuit

  • Manifold absolute pressure sensor

  • ECM

 Comes on DTC stored

WIRING DIAGRAM

B003LNCE01

CAUTION / NOTICE / HINT

Tech Tips

Read freeze frame data using the GTS. Freeze frame data records the engine condition when malfunctions are detected. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, and other data from the time the malfunction occurred.

PROCEDURE


  1. READ VALUE USING GTS (MAF)


    1. Connect the GTS to the DLC3.

    2. Turn the ignition switch to ON and turn the GTS on.

    3. Enter the following menus: Powertrain / Engine and ECT / Data List / MAP.


      Powertrain > Engine and ECT > Data List
      Tester Display
      MAP

    4. Read the value.

      OK
      The same as atmospheric pressure.

      Tech Tips

      Standard atmospheric pressure is 101 kPa. For every 100 m increase in elevation, pressure drops by 1 kPa. This varies by weather (high atmospheric pressure, low atmospheric pressure).

      Intake Manifold Pressure (kPa) Malfunction
      Approx. 0

      • Open in VC circuit

      • Short in PIM circuit
      192 or more

      • Open in PIM circuit

      • Open in E2 circuit
      Result
      Proceed to
      OK
      NG

    NG

    GO TO STEP 3 Click here

    OK

  2. CHECK CONNECTION OF VACUUM HOSE


    1. Check that the vacuum hose is securely connected and there are no leaks from the connection.

      OK
      The vacuum hose is securely connected and there are no leaks from the connection.
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE VACUUM HOSE

    OK

  3. CHECK HARNESS AND CONNECTOR (ECM - MANIFOLD ABSOLUTE PRESSURE SENSOR)


    1. Disconnect the manifold absolute pressure sensor connector.

    2. Disconnect the ECM connector.

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

      Standard resistance
      Tester Connection Condition Specified Condition
      C53-2 (PIM) - C175-33 (PIM) Always Below 1 Ω
      C53-3 (VC) - C175-24 (VCPM) Always Below 1 Ω
      C53-1 (E) - C175-32 (EPIM) Always Below 1 Ω
      C53-2 (PIM) or C175-33 (PIM) - Body ground and other terminals Always 10 kΩ or higher
      C53-3 (VC) or C175-24 (VCPM) - Body ground and other terminals Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  4. INSPECT ECM (CHECK VOLTAGE)


    1. B003RAYC46
      *a

      Front view of wire harness connector

      (to Manifold Absolute Pressure Sensor)

      Disconnect the manifold absolute pressure sensor connector.

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

      Standard voltage
      Tester Connection Switch Condition Specified Condition
      C53-3 (VC) - C53-1 (E) Ignition switch ON 4.5 to 5.5 V
      Result
      Proceed to
      OK
      NG

    NG

    REPLACE ECM Click here

    OK

  5. REPLACE MANIFOLD ABSOLUTE PRESSURE SENSOR


    1. Replace the manifold absolute pressure sensor.

      Result
      Proceed to
      NEXT

    NEXT

  6. CHECK DTC OUTPUT


    1. Connect the GTS to the DLC3.

    2. Turn the ignition switch to ON and turn the GTS on.

    3. Clear the DTC.


      Powertrain > Engine and ECT > Clear DTCs

    4. Turn the ignition switch to ON.

    5. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes.


      Powertrain > Engine and ECT > Trouble Codes

    6. Check the DTC.

      Result
      Display (DTC output) Proceed to
      DTC P0105 is output again A
      No DTC output B

    A

    REPLACE ECM Click here

    B

    END