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 the 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 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

A01E1POE01

INSPECTION PROCEDURE

Note

If the ECM is replaced, 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 conditions when a malfunction is detected. When troubleshooting, freeze frame data can help determine if the vehicle was running or stopped, 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 intelligent tester ON.

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

    4. Read the values.

      Standard
      Same value as the actual atmospheric pressure.

    OK

    CHECK FOR INTERMITTENT PROBLEMS

    NG

  2. CHECK ECM (VC VOLTAGE)

    A01DZAPE01

    1. Turn the ignition switch ON.

    2. Measure the voltage of the ECM connector.

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

    NG

    REPLACE ECM Click here

    OK

  3. CHECK ECM (PIM VOLTAGE)

    A01DZAPE04

    1. Turn the ignition switch ON.

    2. Measure the voltage of the ECM connectors.

      Standard voltage
      Tester Connection Condition Specified Condition
      E7-28 (PIM) - E8-28 (E2) Applied negative pressure of 40 kPa (300 mmHg, 11.8 in.Hg) 0.1 to 0.7 V
      E7-28 (PIM) - E8-28 (E2) Same as atmospheric pressure 0.8 to 1.4 V
      E7-28 (PIM) - E8-28 (E2) Applied positive pressure of 170 kPa (1,275 mmHg, 50.2 in.Hg) 1.6 to 2.2 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 WIRE HARNESS (MANIFOLD ABSOLUTE PRESSURE SENSOR - ECM)

    A01DYYQE20

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

    NG

    REPAIR OR REPLACE HARNESS AND CONNECTOR

    OK

  5. INSPECT TURBOCHARGER SUB-ASSEMBLY


    1. Inspect the turbocharger Click here.

      OK
      None of the inspection results show any abnormalities.

    NG

    REPLACE TURBOCHARGER SUB-ASSEMBLY

    OK

  6. INSPECT EGR VALVE ASSEMBLY


    1. Inspect the EGR valve Click here.

      OK
      None of the inspection results show any abnormalities.

    NG

    REPLACE EGR VALVE ASSEMBLY

    OK

    REPLACE MANIFOLD ABSOLUTE PRESSURE SENSOR