ECD SYSTEM (w/ EGR Cooler), 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 advance timing based on the voltage output by the manifold absolute pressure sensor.

A01E2LVE04

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 assembly

  • EGR valve assembly

  • ECM

Tech Tips

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

Reference
Intake Manifold Pressure Malfunction
Approximately 0 kPa

  • Short in PIM circuit to ground

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

  • short in VC circuit to PIM circuit

  • Open in PIM circuit

  • Open in E2 circuit

WIRING DIAGRAM

A01DW9SE10

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 the intelligent tester. 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 INTELLIGENT TESTER (MAP)


    1. Connect the intelligent tester to the DLC3.

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

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

    4. Read the value.

      Standard
      Same value as the actual atmospheric pressure.

    OK

    CHECK FOR INTERMITTENT PROBLEMS Click here

    NG

  2. CHECK ECM (VC VOLTAGE)


    1. A01DXHUE12

      Turn the ignition switch ON.

    2. Measure the voltage of the ECM connector.

      Standard voltage
      Tester Connection Specified Condition
      VC (E8-18) - E2 (E8-28) 4.5 to 5.5 V

    NG

    REPLACE ECM Click here

    OK

  3. INSPECT ECM (PIM VOLTAGE)


    1. A01DXHUE13

      Turn the ignition switch ON.

    2. Measure the voltage of the ECM connectors.

      Standard voltage
      Tester Connection Condition Specified Condition
      PIM (E7-28) - E2 (E8-28) Applied negative pressure of 40 kPa (300 mmHg, 11.8 in.Hg) 0.1 to 0.7 V
      PIM (E7-28) - E2 (E8-28) Same as atmospheric pressure 0.8 to 1.5 V
      PIM (E7-28) - E2 (E8-28) 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 Click here

    NG

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


    1. A01DWB0E06

      Disconnect the T9 manifold absolute pressure sensor connector.

    2. Disconnect the E7 and E8 ECM connectors.

    3. Measure the resistance of the wire harness side connectors.

      Standard resistance (Check for open)
      Tester Connection Specified Condition
      PIM (T9-2) - PIM (E7-28) Below 1 Ω
      VC (T9-3) - VC (E8-18) Below 1 Ω
      E (T9-1) - E2 (E8-28) Below 1 Ω
      Standard resistance (Check for short)
      Tester Connection Specified Condition
      PIM (T9-2) or PIM (E7-28) - Body ground 10 kΩ or higher
      VC (T9-3) or VC (E8-18) - Body ground 10 kΩ or higher
      E (T9-1) or E2 (E8-28) - Body ground 10 kΩ or higher

    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 Click here

    OK

  6. INSPECT EGR VALVE ASSEMBLY


    1. Check the EGR valve assembly Click here.

      OK
      None of the inspection results show any abnormalities.

    NG

    REPLACE EGR VALVE ASSEMBLY Click here

    OK

    REPLACE MANIFOLD ABSOLUTE PRESSURE SENSOR