ECD SYSTEM (w/o EGR Cooler Bypass Valve), 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.

A01KG7RE04

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 all 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 and ECT / 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

A01KIFXE01

INSPECTION PROCEDURE

Tech Tips


  • If 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.

Note

If the ECM is replaced, the new ECM needs initialization Click here.

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. Select the following menu items: Powertrain / Engine and ECT / Data List / MAP and Atmosphere Pressure.

    4. Read the value displayed on the intelligent tester.

      OK
      Condition MAP Value
      No pressure applied Same as atmospheric pressure
      Vacuum applied Becomes vacuum
      Pressure applied Becomes pressurized

    OK

    INSPECT TURBOCHARGER SUB-ASSEMBLY Click here

    NG

  2. INSPECT ECM (VC VOLTAGE)


    1. A01KGW1E22
      Text in Illustration
      *1 ECM Connector

      Turn the ignition switch ON.

    2. Measure the voltage of the ECM connector.

      Standard voltage
      Tester Connection Specified Condition
      E6-18 (VC) - E6-28 (E2) 4.5 to 5.5 V

    NG

    REPLACE ECM

    OK

  3. INSPECT ECM (PIM VOLTAGE)


    1. A01KGW1E23
      Text in Illustration
      *1 ECM Connector

      Turn the ignition switch ON.

    2. Measure the voltage of the ECM connectors.

      Standard voltage
      Tester Connection Condition Specified Condition
      E5-28 (PIM) - E6-28 (E2) Applied negative pressure of 40 kPa (300 mmHg, 11.8 in.Hg) 0.1 to 0.7 V
      E5-28 (PIM) - E6-28 (E2) Same as atmospheric pressure 0.8 to 1.5 V
      E5-28 (PIM) - E6-28 (E2) Applied positive pressure of 170 kPa (1,275 mmHg, 50.2 in.Hg) 1.6 to 2.3 V

    OK

    REPLACE ECM

    NG

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


    1. Disconnect the T8 manifold absolute pressure sensor connector.

    2. Disconnect the E5 and E6 ECM connectors.

    3. Check the resistance.

      Standard resistance (Check for open)
      Tester Connection Specified Condition
      T8-2 (PIM) - E5-28 (PIM) Below 1 Ω
      T8-3 (VC) - E6-18 (VC) Below 1 Ω
      T8-1 (E2) - E6-28 (E2) Below 1 Ω
      Standard resistance (Check for short)
      Tester Connection Specified Condition
      T8-2 (PIM) or E5-28 (PIM) - Body ground 10 kΩ or higher
      T8-3 (VC) or E6-18 (VC) - Body ground 10 kΩ or higher
      T8-1 (E2) or E6-28 (E2) - Body ground 10 kΩ or higher

    4. Reconnect the manifold absolute pressure sensor connector.

    5. Reconnect the ECM connector.


    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 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

    OK

    REPLACE MANIFOLD ABSOLUTE PRESSURE SENSOR