Dtc P0069 Manifold Absolute Pressure - Barometric Pressure Correlation

Engine Hybrid System. Land Cruiser. Urj200, 202 Grj200 Vdj200
1Vd-Ftv Engine Control. Land Cruiser. Urj200, 202 Grj200 Vdj200

DESCRIPTION

INSPECTION PROCEDURE

CHECK OTHER DTC OUTPUT (IN ADDITION TO DTC P0069)

INSPECT MANIFOLD ABSOLUTE PRESSURE SENSOR

CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED

DTC P0069 Manifold Absolute Pressure - Barometric Pressure Correlation


DESCRIPTION

To detect atmospheric pressure, the atmospheric pressure sensor built into the ECM is used in the common rail system. Following the changes in the atmospheric pressure, the ECM corrects the fuel injection volume, timing and duration, and adjusts the common rail internal fuel pressure to optimize combustion.

P0069
DTC Detection Drive Pattern
DTC Detection Condition
Trouble Area
1 second elapses after ignition switch turned from off to ON (starter remains off)
After the ignition switch is turned to ON, the difference between the atmospheric pressure sensor output and manifold absolute pressure sensor output exceeds the range of +/-8 kPa for 0.5 seconds.
  1. Manifold absolute pressure sensor
  2. ECM

Related Data List
DTC No.
Data List
P0069
  1. Atmosphere Pressure
  2. MAP
HINT:
  1. Turn the ignition switch to ON and check the Atmosphere Pressure and MAP items in the Data List. If the atmospheric pressure displayed on the tester differs greatly from the actual atmospheric pressure (standard: 101 kPa), the sensor (atmospheric pressure sensor or manifold absolute pressure sensor) is malfunctioning.
  2. If DTC P0069 is stored, the following symptoms may appear:
    1. Misfire
    2. Combustion noise
    3. Black smoke
    4. White smoke
    5. Lack of power

INSPECTION PROCEDURE

NOTICE:
After replacing the ECM, the new ECM needs registration (Click here) and initialization (Click here).
HINT:
  1. Although the DTC titles say MAP Sensor Too High or Too Low, these DTCs relate to the atmospheric pressure sensor.
  2. Read freeze frame data using the intelligent tester. 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.CHECK OTHER DTC OUTPUT (IN ADDITION TO DTC P0069)

  1. Connect the intelligent tester to the DLC3.

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

  1. Enter the following menus: Powertrain / Engine / DTC.

  1. Read the DTCs.

    Result
    Result
    		Proceed to
    P0069 is output
    		A
    P0069 and other DTCs are output
    		B

    HINT:
    If codes other than P0069 are output, perform troubleshooting for those DTCs first.


B
GO TO DTC CHART (Click here)
A


2.INSPECT MANIFOLD ABSOLUTE PRESSURE SENSOR
HINT:
Before inspecting the manifold absolute pressure sensor, perform a wire harness inspection and if there are any problems with the wire harness, repair or replace it.

  1. Connect the intelligent tester to the DLC3.

  1. Turn the ignition switch to ON.

  1. Turn the intelligent tester on.

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

  1. Read the value.

    OK:
    Same value as the actual atmospheric pressure.


NG
REPLACE MANIFOLD ABSOLUTE PRESSURE SENSOR (Click here)
OK


3.CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED

  1. Connect the intelligent tester to the DLC3.

  1. Clear the DTC (Click here).

  1. Turn the ignition switch off.

  1. Turn the ignition switch to ON for 1 second.

  1. Enter the following menus: Powertrain / Engine / DTC.

  1. Read the DTCs.

    Result
    Result
    		Proceed to
    P0069 is output
    		A
    No DTC is output
    		B



B
END
A

REPLACE ECM (Click here)