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SFI SYSTEM, Diagnostic DTC:P0107, P0108

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

The manifold absolute pressure sensor detects pressure inside the intake manifold as an absolute pressure with a built-in sensor and outputs a voltage. Based on the voltage from the manifold absolute pressure sensor, the ECM controls the air fuel ratio, and detects errors in the pressure sensor using the changes in pressure.

DTC No. DTC Detecting Condition Trouble Area
P0107 The output voltage from the manifold absolute pressure sensor less than 0.5 V for 0.5 seconds (1 trip detection logic).

  • Open or short in manifold absolute pressure sensor circuit

  • Manifold absolute pressure sensor

  • ECM
P0108 The output voltage from the manifold absolute pressure sensor higher than 4.5 V for 0.5 seconds (1 trip detection logic).

  • Open or short in manifold absolute pressure sensor circuit

  • Manifold absolute pressure sensor

  • ECM
Tip:

When any of these DTCs are output, check the manifold absolute pressure using the GTS. Enter the following menus: Powertrain / Engine and ECT / Data List / All Data / MAP.

Pressure Displayed Malfunction
Approximately 0 kPa(abs) [0 mmHg(abs)]

  • Short in PIM circuit to ground

  • Short in PIM circuit to E2 circuit

  • Open in VC circuit
130 kPa(abs) [975 mmHg(abs)] or higher

  • Short in VC circuit to PIM circuit

  • Open in PIM circuit

  • Open in E2 circuit
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MONITOR DESCRIPTION

The ECM monitors the sensor voltage and uses this value to calculate the manifold absolute pressure. When the sensor output voltage deviates from the normal operating range, the ECM interprets this as a malfunction in the manifold absolute pressure sensor and stores a DTC.

Example:

When the sensor output voltage remains less than 0.5 V, or higher than 4.5 V for 0.5 seconds, the ECM stores a DTC.

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MONITOR STRATEGY

Frequency of Operation Continuous
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CONFIRMATION DRIVING PATTERN


  1. Connect the GTS to the DLC3.

  2. Turn the power switch on (IG) and turn the GTS on.

  3. Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).

  4. Turn the power switch off and wait for at least 30 seconds.

  5. Turn the power switch on (IG) and turn the GTS on.

  6. Put the engine in inspection mode (maintenance mode) (Click here).

  7. Start the engine and wait 5 seconds or more.

  8. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes.

  9. Read the pending DTCs.

    Tip:

    • If a pending DTC is output, the system is malfunctioning.

    • If a pending DTC is not output, perform the following procedure.

  10. Enter the following menus: Powertrain / Engine and ECT / Utility / All Readiness.

  11. Input the DTC: P0107 or P0108.

  12. Check the DTC judgment result.

    GTS Display Description
    NORMAL

    • DTC judgment completed

    • System normal
    ABNORMAL

    • DTC judgment completed

    • System abnormal
    INCOMPLETE

    • DTC judgment not completed

    • Perform driving pattern after confirming DTC enabling conditions
    N/A

    • Unable to perform DTC judgment

    • Number of DTCs which do not fulfill DTC preconditions has reached ECU memory limit
    Tip:

    • If the judgment result shows NORMAL, the system is normal.

    • If the judgment result shows ABNORMAL, the system has a malfunction.

    • If the judgment result shows INCOMPLETE or N/A, perform the Confirmation Driving Pattern and check the DTC judgment result again.

Table 1. *a Manifold Absolute Pressure Sensor
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WIRING DIAGRAM

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CAUTION / NOTICE / HINT

Tip:

Read freeze frame data using the GTS. The ECM records vehicle and driving condition information as freeze frame data the moment a DTC is stored. 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.

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PROCEDURE


  1. Click here

    READ VALUE USING GTS (MAP)


    1. Connect the GTS to the DLC3.

    2. Turn the power switch on (IG).

    3. Turn the GTS on.

    4. Enter the following menus: Powertrain / Engine and ECT / Data List / All Data / MAP.

    5. Read the MAP value.

      OK
      Same value as the actual atmospheric pressure.
      Tip:

      • Standard atmospheric pressure is 101 kPa(abs) [758 mmHg(abs)]. For every 100 m (328 ft) increase in altitude, pressure drops by 1 kPa (7.5 mmHg). The pressure also varies due to the weather (high atmospheric pressure, low atmospheric pressure).

      • Also, check "Atmosphere Pressure" in the Data List.


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    CHECK TERMINAL VOLTAGE (POWER SOURCE OF MANIFOLD ABSOLUTE PRESSURE SENSOR)


    1. A0007IAE01

      Disconnect the manifold absolute pressure sensor connector.

    2. Turn the power switch on (IG).

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      D22-3 (VC) - D22-1 (E2) Power switch on (IG) 4.75 to 5.25 V
      D22-2 (PIM) - D22-1 (E2) Power switch on (IG) 3.0 to 5.0 V
      Table 2. Text in Illustration
      *a

      Front view of wire harness connector

      (to Manifold Absolute Pressure Sensor)

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    REPLACE MANIFOLD ABSOLUTE PRESSURE SENSOR


    1. Replace the manifold absolute pressure sensor (Click here).


  4. Click here

    CHECK WHETHER DTC OUTPUT RECURS (DTC P0107 OR P0108)


    1. Connect the GTS to the DLC3.

    2. Turn the power switch on (IG) and turn the GTS on.

    3. Clear the DTCs (Click here).

    4. Turn the power switch off and wait for at least 30 seconds.

    5. Turn the power switch on (IG).

    6. Turn the GTS on.

    7. Drive the vehicle in accordance with the diving pattern described in the Confirmation Driving Pattern.

    8. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes.

    9. Read the DTCs.

      Table 3. Result
      Result Proceed to
      DTC is not output A
      DTC P0107 or P0108 is output B

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


    1. Disconnect the manifold absolute pressure sensor connector.

    2. Disconnect the ECM connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      D22-3 (VC) - D24-78 (VCPM) Always Below 1 Ω
      D22-1 (E2) - D24-80 (EPIM) Always Below 1 Ω
      D22-2 (PIM) - D24-79 (PIM) Always Below 1 Ω
      D22-3 (VC) or D24-78 (VCPM) - Body ground Always 10 kΩ or higher
      D22-2 (PIM) or D24-79 (PIM) - Body ground Always 10 kΩ or higher

    • OK

      REPLACE ECM (Click here)

    • NG

      REPAIR OR REPLACE HARNESS OR CONNECTOR