ECD SYSTEM, 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

By a built-in sensor unit, the turbo pressure sensor (manifold absolute pressure sensor) detects the intake manifold pressure as a voltage. The ECM then determines the basic injection duration and basic ignition advance angle based on this voltage.

Since the turbo pressure sensor does not use the atmospheric pressure as a criterion, but senses the absolute pressure inside the intake manifold (the pressure in proportion to the preset absolute vacuum 0), it is not influenced by fluctuations in the atmospheric pressure due to high altitude and other factors. This permits it to control the air fuel ratio at the proper level under all conditions.

A01CGRCE11
DTC No. DTC Detection Condition Trouble Area
P0105

After engine is started, condition (a) continues for more than 2.0 seconds

(a) Open or short in turbo pressure sensor circuit for 0.5 seconds or more

  • Open or short in turbo pressure sensor circuit

  • Turbo pressure sensor

  • ECM
P0107

After engine is started, condition (a) continues for more than 2.0 seconds

(a) Short in turbo pressure sensor circuit for 0.5 seconds or more

  • Open or short in turbo pressure sensor circuit

  • Turbo pressure sensor

  • ECM
P0108

After engine is started, condition (a) continues for more than 2.0 seconds

(a) Open in turbo pressure sensor circuit for 0.5 seconds or more

  • Open or short in turbo pressure sensor circuit

  • Turbo pressure sensor

  • ECM

Tech Tips

If 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.

Intake Manifold Pressure (kPa) Malfunction
Approximately 0 Short in PIM circuit
255 or more

  • Open or short in VC circuit

  • Open in PIM circuit

  • Open in E2 circuit

WIRING DIAGRAM

A01CIOHE01

INSPECTION PROCEDURE

Tech Tips


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

  • Read freeze frame data using the intelligent tester. The ECM records vehicle and driving condition information as freeze frame data the moment a DTC is stored. When troubleshooting, freeze frame data can be helpful in determining whether the vehicle was running or stopped, whether the engine was warmed up or not, whether the air fuel ratio was lean or rich, as well as other data recorded at the time of a malfunction.

PROCEDURE


  1. READ VALUE USING INTELLIGENT TESTER (MANIFOLD ABSOLUTE PRESSURE)


    1. Connect the intelligent tester to the DLC3.

    2. Turn the ignition switch to the ON position.

    3. Turn the tester on.

    4. Enter the following menu items: Powertrain / Engine and ECT / Data List / MAP.

    5. Read the value.

      Result
      Pressure Displayed Proceed to
      130 kPa A
      0 kPa B
      OK (same as atmospheric pressure near to intake manifold) C

    B

    CHECK ECM (PIM VOLTAGE) Click here

    C

    CHECK FOR INTERMITTENT PROBLEMS

    A

  2. CHECK ECM (VC VOLTAGE)


    1. A01CGXCE01

      Turn the ignition switch to the ON position.

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

      Standard voltage
      Tester Connection Condition Specified Condition
      E22-18 (VC) - E22-28 (E2) Ignition switch in the ON position 4.5 to 5.5 V

    NG

    REPLACE ECM

    OK

  3. CHECK ECM (PIM VOLTAGE)


    1. A01CGXCE02

      Turn the ignition switch to the ON position.

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

      Standard voltage
      Tester Connection Condition Specified Condition
      E23-28 (PIM) - E22-28 (E2) Negative pressure of 93 kPa (698 mmHg, 27.5 in.Hg) applied 0.25 to 0.4 V
      E23-28 (PIM) - E22-28 (E2) Positive pressure of 150 kPa (1125 mmHg, 44 in.Hg) applied 1.0 to 1.4 V

    NG

    REPLACE ECM

    OK

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


    1. A01CJ58E04

      Disconnect the turbo pressure sensor connectors.

    2. Disconnect the ECM connector.

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

      Standard resistance
      Check for open
      Tester Connection Condition Specified Condition
      T2-2 (PB) - E23-28 (PIM) Always Below 1 Ω
      T2-3 (VC) - E22-18 (VC) Always Below 1 Ω
      T2-1 (GND) - E22-28 (E2) Always Below 1 Ω
      Check for short
      Tester Connection Condition Specified Condition
      T2-2 (PB) or E23-28 (PIM) - Body ground Always 10 kΩ or higher
      T2-3 (VC) or E22-18 (VC) - Body ground Always 10 kΩ or higher

    4. Reconnect the turbo pressure sensor connector.

    5. Reconnect the ECM connectors.


    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR (TURBO PRESSURE SENSOR - ECM)

    OK

    REPLACE TURBO PRESSURE SENSOR