Dtc P0299 Turbocharger / Supercharger Underboost

Engine Hybrid System. Hilux. Tgn26, 36 Kun25, 26, 35, 36 Ggn25
2Kd-Ftv Engine Control. Hilux. Tgn26, 36 Kun25, 26, 35, 36 Ggn25

DESCRIPTION

INSPECTION PROCEDURE

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

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

DTC P0299 Turbocharger / Supercharger Underboost


DESCRIPTION

HINT:
Refer to DTC P0046 (HILUX_TGN26 RM000002PPL057X_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 (1 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 sub-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. Inspect the fuses of circuits related to this system before performing the following inspection procedure.
  2. After replacing the ECM, the new ECM needs registration (HILUX_TGN26 RM0000012XK070X.html) and initialization (HILUX_TGN26 RM000000TIN057X.html).
  3. After replacing the fuel supply pump assembly, the ECM needs initialization (HILUX_TGN26 RM000000TIN057X.html).
  4. After replacing an injector assembly, the ECM needs registration (HILUX_TGN26 RM0000012XK070X.html).
HINT:
  1. 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.
  2. Comparison of the data list items manifold absolute pressure and target booster pressure during acceleration under medium to high engine speeds can be used to determine the state of the problem.
1.CHECK FOR ANY OTHER DTCS OUTPUT (IN ADDITION TO DTC P0299)

  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 and ECT / DTC.

  1. Read the DTCs.

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



B
GO TO DTC CHART (HILUX_TGN26 RM0000031HW04EX.html)
A


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

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

  1. Record the stored DTCs and freeze frame data.

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



A
GO TO INSPECT CLOGGED FUEL PIPE (LACK OF POWER OR HESITATION) (HILUX_TGN26 RM000000W0E0ANX_04_0127.html)
B

GO TO LACK OF POWER OR HESITATION (HILUX_TGN26 RM000000W0E0ANX_02.html)