Dtc P0105 Manifold Absolute Pressure / Barometric Pressure Circuit


DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

READ VALUE USING GTS (MAP)

CHECK CONNECTION OF VACUUM HOSE

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

INSPECT ECM (CHECK VOLTAGE)

REPLACE MANIFOLD ABSOLUTE PRESSURE SENSOR

READ OUTPUT DTC (DTC P0105 IS OUTPUT AGAIN)

DTC P0105 Manifold Absolute Pressure / Barometric Pressure Circuit


DESCRIPTION

The manifold absolute pressure sensor generates voltage by the vacuum value as shown in the illustration. This voltage of the manifold absolute pressure sensor is one of the factors used to decide the injection volume and injection timing.
Land Cruiser, Land Cruiser Prado. Grj150 Trj150,155 Kdj150,155 Lj150, Gdj150,155.5L-E Engine Control.Ecd System. Dtc P0105 Manifold Absolute Pressure / Barometric Pressure Circuit

DTC No.
DTC Detection Condition
Trouble Area
P0105
Open or short in manifold absolute pressure sensor circuit for 2 seconds or more.
  1. Open or short in manifold absolute pressure sensor circuit
  2. Manifold absolute pressure sensor
  3. ECM

WIRING DIAGRAM


Land Cruiser, Land Cruiser Prado. Grj150 Trj150,155 Kdj150,155 Lj150, Gdj150,155.5L-E Engine Control.Ecd System. Dtc P0105 Manifold Absolute Pressure / Barometric Pressure Circuit


INSPECTION PROCEDURE

HINT:
Read freeze frame data using the GTS. Freeze frame data records the engine condition when malfunctions are detected. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, and other data from the time the malfunction occurred.
1.READ VALUE USING GTS (MAP)

  1. Connect the GTS to the DLC3.

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

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

  1. Read the value.

    OK:
    The same as atmospheric pressure.
    HINT:
    Standard atmospheric pressure is 101 kPa. For every 100 m increase in elevation, pressure drops by 1 kPa. This varies by weather (high atmospheric pressure, low atmospheric pressure).

    Intake Manifold Pressure (kPa)
    		Malfunction
    Approx. 0
    1. Open in VC circuit
    2. Short in PIM circuit
    192 or more
    1. Open in PIM circuit
    2. Open in E2 circuit


NG
Go to step 3
OK


2.CHECK CONNECTION OF VACUUM HOSE

  1. Check that the vacuum hose is securely connected and there are no leaks from the connection.

    OK:
    The vacuum hose is securely connected and there are no leaks from the connection.


NG
REPAIR OR REPLACE VACUUM HOSE
OK


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

  1. Disconnect the manifold absolute pressure sensor connector.

  1. Disconnect the ECM connector.

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

    Standard Resistance:

    Tester Connection
    		Condition
    		Specified Condition
    C83-2 (PIM) - G183-33 (PIM)
    		Always
    		Below 1 Ω
    C83-3 (VC) - G183-24 (VCPM)
    		Always
    		Below 1 Ω
    C83-1 (E) - G183-32 (EPIM)
    		Always
    		Below 1 Ω
    C83-2 (PIM) or G183-33 (PIM) - Body ground
    		Always
    		10 kΩ or higher
    C83-3 (VC) or G183-24 (VCPM) - Body ground
    		Always
    		10 kΩ or higher


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK


4.INSPECT ECM (CHECK VOLTAGE)


    Land Cruiser, Land Cruiser Prado. Grj150 Trj150,155 Kdj150,155 Lj150, Gdj150,155.5L-E Engine Control.Ecd System. Dtc P0105 Manifold Absolute Pressure / Barometric Pressure Circuit

  1. Disconnect the manifold absolute pressure sensor connector.

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

    Standard Voltage:
    Tester Connection
    		Switch Condition
    		Specified Condition
    C83-3 (VC) - C83-1 (E)
    		Ignition switch ON
    		4.5 to 5.5 V
    Text in Illustration
    *a
    		Front view of wire harness connector
    (to Manifold Absolute Pressure Sensor)


NG
REPLACE ECM (LandCruiser RM000000VW203FX.html)
OK


5.REPLACE MANIFOLD ABSOLUTE PRESSURE SENSOR

  1. Replace the manifold absolute pressure sensor.


NEXT


6.READ OUTPUT DTC (DTC P0105 IS OUTPUT AGAIN)

  1. Connect the GTS to the DLC3.

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

  1. Clear the DTC (LandCruiser RM000000VR600WX.html).

  1. Turn the ignition switch to ON.

  1. Check the DTC (LandCruiser RM000000VR600WX.html).

    Result:

    Display (DTC output)
    		Proceed to
    DTC P0105 is output again
    		A
    No DTC output
    		B


B
END
A

REPLACE ECM (LandCruiser RM000000VW203FX.html)