Dtc P2226 Barometric Pressure Circuit


DESCRIPTION

INSPECTION PROCEDURE

REPLACE ECM

CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED

DTC P2226 Barometric Pressure Circuit

DTC P2228 Barometric Pressure Circuit Low Input

DTC P2229 Barometric Pressure Circuit High Input


DESCRIPTION

To detect atmospheric pressure, the built-in atmospheric pressure sensor in the ECM is used. Using the atmospheric pressure, the ECM corrects the injection volume, timing and duration, and adjusts the common rail internal fuel pressure in order to optimize engine combustion.

P2226
DTC Detection Drive Pattern
DTC Detection Condition
Trouble Area
Engine switch on (IG) for 1 second
Atmospheric pressure sensor voltage is 1.4 V or less, or 4.0 V or higher for 0.5 seconds (1 trip detection logic).
ECM

P2228
DTC Detection Drive Pattern
DTC Detection Condition
Trouble Area
Engine switch on (IG) for 1 second
Atmospheric pressure sensor voltage is 1.4 V or less for 0.5 seconds (1 trip detection logic).
ECM

P2229
DTC Detection Drive Pattern
DTC Detection Condition
Trouble Area
Engine switch on (IG) for 1 second
Atmospheric pressure sensor voltage is 4.0 V or higher for 0.5 seconds (1 trip detection logic).
ECM

Related Data List
DTC No.
Data List
P2226
P2228
P2229
  1. Atmosphere Pressure
  2. MAP
HINT:
  1. When the engine switch is on (IG), the intake manifold pressure, "MAP", is approximately equal to atmospheric pressure.
  2. Under standard atmospheric pressure conditions, the output of the atmospheric pressure sensor 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).
  3. If DTC P2226, P2228 and/or P2229 is stored, the following symptoms may appear:
    1. Misfire
    2. Combustion noise
    3. Black smoke
    4. White smoke

INSPECTION PROCEDURE

NOTICE:
After replacing the ECM, the new ECM needs registration (LandCruiser RM0000012XK0AUX.html) and initialization (LandCruiser RM000000TIN08HX.html).
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.REPLACE ECM

  1. Replace the ECM (LandCruiser RM0000013Z002DX.html).


NEXT


2.CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED

  1. Connect the GTS to the DLC3.

  1. Turn the engine switch on (IG) and turn the GTS on.

  1. Clear the DTCs (LandCruiser RM000000PDK1E5X.html).

  1. Turn the engine switch off and wait for 30 seconds.

  1. Turn the engine switch on (IG) and wait for 1 second or more.

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

  1. Confirm that the DTC is not output again.


NEXT

END