Dtc P0299 Turbo / Super Charger Underboost


DESCRIPTION

INSPECTION PROCEDURE

CHECK FOR ANY OTHER DTCS OUTPUT (IN ADDITION TO DTC P0299)

CHECK FREEZE FRAME DATA (COMMON RAIL PRESSURE AND TARGET COMMON RAIL PRESSURE)

DTC P0299 Turbo / Super Charger Underboost


DESCRIPTION

HINT:
Refer to DTC P0046 (LandCruiser RM000002PPL094X_01.html).

P0299
DTC Detection Drive Pattern
DTC Detection Condition
Trouble Area
Accelerate vehicle with accelerator depressed halfway or more starting from a speed of 120 km/h (75 mph) or more for 2 minutes (make sure gear is fixed and does not change)
The pressure is 55 kPa below the Target Booster Pressure for 80 seconds at an engine speed of 2800 to 4400 rpm (2 trip detection logic).
  1. Turbocharger sub-assembly
  2. Extremely low battery voltage (P0560 output simultaneously)
  3. Disconnected pipe between turbo and intake manifold
  4. Disconnected manifold absolute pressure sensor hose
  5. Throttle valve stuck closed
  6. Electric EGR control valve assembly does not close
  7. Exhaust system or intake system modified (leading to increased pressure loss, etc.)
  8. Manifold absolute pressure sensor
  9. Injection system (reduction in fuel injection volume)
  10. Fuel filter element assembly clog
  11. ECM

Related Data List
DTC No.
Data List
P0299
  1. Target Booster Pressure
  2. MAP
HINT:
  1. If DTC P0299 is stored due to the variable nozzle being stuck open, the following symptoms may appear:
    1. Lack of power
    2. Vehicle surge or hesitation under light or medium load

INSPECTION PROCEDURE

NOTICE:
  1. After replacing the ECM, the new ECM needs registration (LandCruiser RM0000012XK0AVX.html) and initialization (LandCruiser RM000000TIN08IX.html).
  2. After replacing an injector assembly, the ECM needs registration (LandCruiser RM0000012XK0AVX.html).
HINT:
  1. 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.
  2. The state of the problem symptom can be determined by comparing the Data List items "MAP" and "Target Booster Pressure" while accelerating at a medium to high engine speed.
1.CHECK FOR ANY OTHER DTCS OUTPUT (IN ADDITION TO DTC P0299)

  1. Connect the GTS to the DLC3.

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

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

  1. Read the DTCs.

    Result
    Result
    		Proceed to
    DTC P0299 is output
    		A
    DTC P0299 and other DTCs are output
    		B



B
GO TO DTC CHART (LandCruiser RM0000031HW07PX.html)
A


2.CHECK FREEZE FRAME DATA (COMMON RAIL PRESSURE AND TARGET COMMON RAIL PRESSURE)

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

  1. Record the stored DTCs and freeze frame data.

    Result
    Result
    		Proceed to
    Difference between Common Rail Pressure and Target Common Rail Pressure of freeze frame data is 20000 kPa or more
    		A
    Except above
    		B



B
GO TO LACK OF POWER OR HESITATION (LandCruiser RM000000W0E0F6X.html)
A

GO TO INSPECT CLOGGED FUEL PIPE (LACK OF POWER OR HESITATION) (LandCruiser RM000000W0E0F6X_04_0127.html)