Dtc P0234 Turbocharger / Supercharger Overboost Condition. Corolla Auris

Двигатель. COROLLA, AURIS. ZZE150 ZRE151,152 NDE150
Система Управления Двигателем 2Ad-Fhv. COROLLA, AURIS. ZZE150 ZRE151,152 NDE150

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

CHECK OTHER DTC OUTPUT (IN ADDITION TO DTC P0234, P0299 AND/OR P1251)

CHECK CONNECTION OF VACUUM HOSE

CHECK VACUUM (TURBOCHARGER - VRV FOR TURBOCHARGER CONTROL)

INSPECT VRV FOR TURBOCHARGER CONTROL (VRV RESISTANCE)

CHECK HARNESS AND CONNECTOR (VRV FOR TURBOCHARGER CONTROL - ECM)

INSPECT TURBOCHARGER SUB-ASSEMBLY

INSPECT EGR VALVE ASSEMBLY

READ VALUE OF DIESEL TURBO PRESSURE SENSOR

DTC P0234 Turbocharger / Supercharger Overboost Condition

DTC P0299 Turbocharger / Supercharger Underboost

DTC P1251 Turbocharger / Supercharger Overboost Condition (Too High)


DESCRIPTION


DTC No.
DTC Detection Condition
Trouble Area
P0234
Turbocharging pressure is higher than the threshold for 60 seconds.
(1-trip detection logic)
  1. VRV for turbocharger control
  2. Open or short in VRV circuit
  3. Turbocharger
  4. Vacuum hose
  5. EGR valve
  6. ECM
P0299
Turbocharging pressure is lower than the threshold for 40 seconds when the turbocharging pressure deviates from the requirement.
(2-trip detection logic)
P1251
Turbocharging pressure is higher than the requirement for 0.5 seconds.
(1-trip detection logic)

WIRING DIAGRAM


COROLLA, AURIS. ZZE150 ZRE151,152 NDE150.Система Управления Двигателем 2Ad-Fhv.Система Ecd. Dtc P0234 Turbocharger / Supercharger Overboost Condition


INSPECTION PROCEDURE

ПРИМЕЧАНИЕ:
After replacing the ECM, the new ECM needs registration (See page Нажмите здесь) and initialization (See page Нажмите здесь).
УКАЗАНИЕ:
Read freeze frame data using the intelligent tester. The ECM records vehicle and driving condition information as freeze frame data the moment a DTC is stored. 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 P0234, P0299 AND/OR P1251)

  1. Connect the intelligent tester to the DLC3.

  1. Turn the ignition switch on (IG) and turn the tester on.

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

  1. Read the DTCs.

    Result:

    Result
    		Proceed to
    DTC P0234, P0299 and/or P1251 are output
    		A
    DTC P0234, P0299 and/or P1251 and other DTCs are output
    		B


B
GO TO DTC CHART (Нажмите здесь)
A


2.CHECK CONNECTION OF VACUUM HOSE
УКАЗАНИЕ:
Check connections of the vacuum hoses of the turbocharger system.


NG
REPAIR OR REPLACE VACUUM HOSE
OK


3.CHECK VACUUM (TURBOCHARGER - VRV FOR TURBOCHARGER CONTROL)

  1. Using a three-way connector, connect a vacuum gauge to the hose between the VRV and turbocharger.

  1. Warm up the engine coolant temperature to above 75°C (167°F).

  1. Check the vacuum at the engine speed of 900 rpm.

    Result:

    Result
    		Proceed to
    Vacuum: 0 kPa (0 mmHg, 0 in.Hg) to 50 kPa (375 mmHg, 14.8 in.Hg)
    		A
    Vacuum: Above 50 kPa (375 mmHg, 14.8 in.Hg)
    		B


B
Перейдите к шагу 6
A


4.INSPECT VRV FOR TURBOCHARGER CONTROL (VRV RESISTANCE)


    COROLLA, AURIS. ZZE150 ZRE151,152 NDE150.Система Управления Двигателем 2Ad-Fhv.Система Ecd. Dtc P0234 Turbocharger / Supercharger Overboost Condition

  1. Disconnect the VRV connector.

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

    Standard resistance:
    Tester Connection
    		Condition
    		Specified Condition
    1 - 2
    		20°C (68°F)
    		11.1 to 12.5 Ω

  1. Reconnect the VRV connector.



NG
REPLACE VRV FOR TURBOCHARGER CONTROL (Нажмите здесь)
OK


5.CHECK HARNESS AND CONNECTOR (VRV FOR TURBOCHARGER CONTROL - ECM)


    COROLLA, AURIS. ZZE150 ZRE151,152 NDE150.Система Управления Двигателем 2Ad-Fhv.Система Ecd. Dtc P0234 Turbocharger / Supercharger Overboost Condition

  1. Disconnect the VRV connector.

  1. Disconnect the ECM connector.

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

    Standard resistance (Check for open):
    Tester Connection
    		Condition
    		Specified Condition
    B31-84 (VN) - B45-2
    		Always
    		Below 1 Ω
    Standard resistance (Check for short):
    Tester Connection
    		Condition
    		Specified Condition
    B31-84 (VN) or B45-2 - Body ground
    		Always
    		10 kΩ or higher

  1. Reconnect the VRV connector.

  1. Reconnect the ECM connector.



NG
REPAIR OR REPLACE HARNESS OR CONNECTOR (VRV FOR TURBOCHARGER CONTROL - ECM)
OK


6.INSPECT TURBOCHARGER SUB-ASSEMBLY

  1. Check the turbocharger sub-assembly (See page Нажмите здесь).



NG
REPLACE TURBOCHARGER SUB-ASSEMBLY (Нажмите здесь)
OK


7.INSPECT EGR VALVE ASSEMBLY

  1. Check the EGR valve assembly (See page Нажмите здесь).



NG
REPLACE EGR VALVE ASSEMBLY (Нажмите здесь)
OK


8.READ VALUE OF DIESEL TURBO PRESSURE SENSOR

  1. Connect the intelligent tester to the DLC3.

  1. Turn the ignition switch on (IG) and turn the tester on.

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

  1. Read the value.

    OK:
    Condition
    		MAP Value
    No pressure applied
    		Same as atmospheric pressure
    Vacuum applied
    		Becomes vacuum
    Pressure applied
    		Becomes pressurized


NG
REPLACE DIESEL TURBO PRESSURE SENSOR (Нажмите здесь)
OK

REPLACE ECM (Нажмите здесь)