ECD SYSTEM (w/o DPF), Diagnostic DTC:P0105, P0107, P0108

DTC Code DTC Name
P0105 Manifold Absolute Pressure / Barometric Pressure Circuit
P0107 Manifold Absolute Pressure / Barometric Pressure Circuit Low Input
P0108 Manifold Absolute Pressure / Barometric Pressure Circuit High Input

DESCRIPTION

The manifold absolute pressure sensor detects the intake manifold pressure by using its built-in sensor unit. The ECM determines the basic injection duration and injection timing based on the voltage output by the manifold absolute pressure sensor.

A01BDG7E04

The manifold absolute pressure sensor monitors the absolute pressure inside the intake manifold (default is 0 kPa [0 mmHg, 0 in.Hg]). As a result the ECM controls the air-fuel ratio at the proper level under any driving conditions, and fuel control accuracy is not influenced by fluctuations in the atmospheric pressure due to factors such as high altitude, etc.

DTC No. DTC Detection Condition Trouble Area

P0105

P0107

P0108

Open or short in manifold absolute pressure sensor circuit for 0.8 seconds or more

(1 trip detection logic)

  • Open or short in manifold absolute pressure sensor circuit

  • Manifold absolute pressure sensor

  • Turbocharger sub-assembly

  • Electric EGR control valve assembly

  • ECM

Tech Tips

When DTC P0105, P0107, or P0108 is detected, check the intake manifold pressure by selecting the following menu items on an intelligent tester: Powertrain / Engine / Data List / MAP.

Reference
Intake Manifold Pressure Malfunction
Approximately 0 kPa

  • Short in PIM circuit
250 kPa (1,875 mmHg, 73.8 in.Hg) or more

  • Open or short in VC circuit

  • Open in PIM circuit

  • Open in E2 circuit

WIRING DIAGRAM

A01BI2RE06

INSPECTION PROCEDURE

Note

After replacing the ECM, the new ECM needs registration Click here and initialization Click here.

Tech Tips


  • If different DTCs related to different systems that have terminal E2 as the ground terminal are output simultaneously, terminal E2 may have an open circuit.

  • Read freeze frame data using an intelligent tester. Freeze frame data record 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, if the air-fuel ratio was lean or rich, and other data, from the time the malfunction occurred.

PROCEDURE


  1. READ VALUE USING INTELLIGENT TESTER (MAP)


    1. Connect an intelligent tester to the DLC3.

    2. Turn the ignition switch to ON and turn the tester ON.

    3. Select the following menu items: Powertrain / Engine / Data List / MAP.

    4. Read the value.

      Standard
      Same value as the actual atmospheric pressure.

    OK

    CHECK FOR INTERMITTENT PROBLEMS

    NG

  2. CHECK ECM (VC VOLTAGE)


    1. A01BADOE09

      Turn the ignition switch to ON.

    2. Measure the voltage of the ECM connector.

      Standard voltage
      Tester Connection Specified Condition
      VC (D1-18) - E2 (D1-28) 4.5 to 5.5 V

    NG

    REPLACE ECM

    OK

  3. INSPECT ECM (PIM VOLTAGE)


    1. A01BADOE10

      Turn the ignition switch to ON.

    2. Measure the voltage of the ECM connectors when applying a negative pressure and positive pressure to the manifold absolute pressure sensor using the vacuum pump and turbocharger pressure gauge.

      Standard voltage
      Tester Connection Condition Specified Condition
      PIM (D3-28) - E2 (D1-28) Applied negative pressure of 40 kPa (300 mmHg, 11.8 in.Hg) 0.1 to 0.7 V
      PIM (D3-28) - E2 (D1-28) Same as atmospheric pressure 0.8 to 1.5 V
      PIM (D3-28) - E2 (D1-28) Applied positive pressure of 170 kPa (1,275 mmHg, 50.2 in.Hg) 1.6 to 2.3 V

      Tech Tips

      Even when the output voltage from the manifold absolute pressure sensor is within the specified voltage range, there may be a problem in the sensor caused by age deterioration.


    OK

    REPLACE ECM

    NG

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


    1. A01BDSDE02

      Disconnect the D51 manifold absolute pressure sensor connector.

    2. Disconnect the D1 and D3 ECM connectors.

    3. Check the resistance.

      Standard resistance (Check for open)
      Tester Connection Specified Condition
      PIM (D51-2) - PIM (D3-28) Below 1 Ω
      VC (D51-3) - VC (D1-18) Below 1 Ω
      E (D51-1) - E2 (D1-28) Below 1 Ω
      Standard resistance (Check for short)
      Tester Connection Specified Condition
      PIM (D51-2) or PIM (D3-28) - Body ground 10 kΩ or higher
      VC (D51-3) or VC (D1-18) - Body ground 10 kΩ or higher
      E (D51-1) or E2 (D1-28) - Body ground 10 kΩ or higher

    4. Reconnect the manifold absolute pressure sensor connector.

    5. Reconnect the ECM connectors.


    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  5. INSPECT TURBOCHARGER SUB-ASSEMBLY


    1. Check the turbocharger sub-assembly Click here.

      OK
      None of the inspection results show any abnormalities.

    NG

    REPLACE TURBOCHARGER SUB-ASSEMBLY

    OK

  6. INSPECT ELECTRIC EGR CONTROL VALVE ASSEMBLY


    1. Check the electric EGR control valve assembly Click here.

      OK
      None of the inspection results show any abnormalities.

    NG

    REPLACE ELECTRIC EGR CONTROL VALVE ASSEMBLY

    OK

    REPLACE MANIFOLD ABSOLUTE PRESSURE SENSOR