SFI SYSTEM, Diagnostic DTC:P0107 and P0108

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

DESCRIPTION

A263608E01

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 purge VSV and corrects any errors in the air fuel ratio due to change in pressure.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

MIL

Memory

P0107

Manifold Absolute Pressure / Barometric Pressure Circuit Low Input

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

Comes on

DTC stored

P0108

Manifold Absolute Pressure / Barometric Pressure Circuit High Input

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

Comes on

DTC stored
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.

Manifold Absolute Pressure

Malfunction

Approximately 0 kPa(abs) [0 mmHg(abs)]

  • Short in PIM circuit to ground

  • Short in PIM circuit to EPIM circuit

  • Open in VCPM circuit

130 kPa(abs) [975 mmHg(abs)] or higher

  • Short in VCPM circuit to PIM circuit

  • Open in PIM circuit

  • Open in EPIM circuit

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 pressure sensor and stores a DTC.

Example:

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

MONITOR STRATEGY

Frequency of Operation

Continuous

CONFIRMATION DRIVING PATTERN

  1. Connect the GTS to the DLC3.

  2. Turn the ignition switch to ON and turn the GTS on.

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

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

  5. Turn the ignition switch to ON and turn the GTS on.

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

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

  8. Read pending DTCs.

    Tip:

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

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

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

  10. Input the DTC: P0107 or P0108.

  11. 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 the DTC judgment result again.

WIRING DIAGRAM

A256088E77

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.

PROCEDURE

  1. READ VALUE USING GTS (MAP)

    1. Connect the GTS to the DLC3.

    2. Turn the ignition switch to ON.

    3. Turn the GTS on.

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

      Powertrain > Engine and ECT > Data List

      Tester Display

      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(abs) (7.5 mmHg(abs)). Varies by weather (high atmospheric pressure, low atmospheric pressure).

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

    Result

    Proceed to

    OK

    NG
    OK

    CHECK FOR INTERMITTENT PROBLEMS

    Click here

    NG

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

    1. A248180C07

      *a

      Front view of wire harness connector

      (to Manifold Absolute Pressure Sensor)

      Disconnect the manifold absolute pressure sensor connector.

    2. Turn the ignition switch to ON.

    3. Measure the voltage between the terminals of the manifold absolute pressure sensor connector.

      Standard Voltage

      Tester Connection

      Condition

      Specified Condition

      B18-3 (VC) - B18-1 (E2)

      Ignition switch ON

      4.75 to 5.25 V

      B18-2 (PIM) - B18-1 (E2)

      Ignition switch ON

      3.0 to 5.25 V

    Result

    Proceed to

    OK

    NG
    NG

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

    OK

  3. REPLACE MANIFOLD ABSOLUTE PRESSURE SENSOR

    1. Replace the manifold absolute pressure sensor.

      Click here

    Result

    Proceed to

    NEXT
    NEXT

  4. CHECK WHETHER DTC OUTPUT RECURS (DTC P0107 OR P0108)

    1. Connect the GTS to the DLC3.

    2. Turn the ignition switch to ON.

    3. Turn the GTS on.

    4. Clear the DTCs.

      Powertrain > Engine and ECT > Clear DTCs

    5. Turn the ignition switch off and wait for at least 30 seconds.

    6. Turn the ignition switch to ON.

    7. Turn the GTS on.

    8. Drive the vehicle in accordance with the driving pattern described in the Confirmation Driving Pattern.

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

    10. Read the DTCs.

      Powertrain > Engine and ECT > Trouble Codes

    Result

    Result

    Proceed to

    DTC is not output

    A

    DTC P0107 or P0108 is output

    B
    A

    END

    B

    REPLACE ECM

    Click here

  5. 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

      B18-3 (VC) - B186-77 (VCPM)

      Always

      Below 1 Ω

      B18-1 (E2) - B186-76 (EPIM)

      Always

      Below 1 Ω

      B18-2 (PIM) - B186-78 (PIM)

      Always

      Below 1 Ω

      B18-3 (VC) or B186-77 (VCPM) - Body ground

      Always

      10 kΩ or higher

      B18-2 (PIM) or B186-78 (PIM) - Body ground

      Always

      10 kΩ or higher

    Result

    Proceed to

    OK

    NG
    OK

    REPLACE ECM

    Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR