Dtc P0400 Exhaust Gas Recirculation Flow. Corolla Auris

Двигатель. COROLLA, AURIS. ZZE150 ZRE151,152 NDE150
Система Управления Двигателем 1Nd-Tv. COROLLA, AURIS. ZZE150 ZRE151,152 NDE150

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

CHECK ANY OTHER DTCS OUTPUT (IN ADDITION TO DTC P0400)

INSPECT EGR VALVE ASSEMBLY

CHECK EGR VALVE ASSEMBLY (VOLTAGE)

CHECK HARNESS AND CONNECTOR (EGR VALVE ASSEMBLY - ECM)

CHECK FOR DEPOSIT (EGR VALVE ASSEMBLY)

CHECK FOR DEPOSIT (EGR PASSAGE)

INSPECT FOR EXHAUST GAS LEAK

INSPECT DIESEL THROTTLE BODY ASSEMBLY

READ VALUE USING INTELLIGENT TESTER (MAF)

INSPECT FUSE (EFI NO. 2 FUSE)

DTC P0400 Exhaust Gas Recirculation Flow


DESCRIPTION

The EGR (Exhaust Gas Recirculation) system recirculates exhaust gases, which are controlled to the proper volume in accordance with driving conditions. The recirculated gas mingles with the intake air, therefore slowing down the engine combustion and lowering the combustion temperature. This helps reduce nitrogen oxide (NOx) emissions.
In order to increase circulatory efficiency, the ECM adjusts the lift of the EGR valve and intake shutter valve (throttle valve).

DTC No.
DTC Detection Condition
Trouble Area
P0400
Target and actual mass air flow rates differ
(The MIL is illuminated and a DTC is set when the same malfunction is detected on 2 consecutive trips*
*: One trip is counted when the ignition switch is turned from off to the ON position and back to off)
  1. Open or short in EGR circuit
  2. EGR valve assembly
  3. EGR passage
  4. Intake shutter
  5. Mass air flow meter
  6. Contamination in mass air flow meter
  7. ECM
УКАЗАНИЕ:
  1. DTC P0400 is set while the engine is running in steady condition.
  2. If DTC P0403 has already been set, P0400 is not set.

WIRING DIAGRAM

Refer to DTC P0121 (See page Нажмите здесь).

COROLLA, AURIS. ZZE150 ZRE151,152 NDE150.Система Управления Двигателем 1Nd-Tv.Система Ecd. Dtc P0400 Exhaust Gas Recirculation Flow


INSPECTION PROCEDURE

УКАЗАНИЕ:
Read freeze frame data using an 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 be helpful in determining whether the vehicle was running or stopped, whether the engine was warmed up or not, whether the air fuel ratio was lean or rich, as well as other data recorded at the time of a malfunction.
1.CHECK ANY OTHER DTCS OUTPUT (IN ADDITION TO DTC P0400)

  1. Connect the intelligent tester to the DLC3.

  1. Turn the ignition switch to the ON position.

  1. Turn the tester on.

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

  1. Read the DTCs.

    Result:
    Result
    		Proceed to
    DTC P0400 is output
    		A
    DTC P0400 and other DTCs are output
    		B
    УКАЗАНИЕ:
    If any DTCs other than P0400 are output, troubleshoot those DTCs first.


B
GO TO DTC CHART (Нажмите здесь)
A


2.INSPECT EGR VALVE ASSEMBLY


    COROLLA, AURIS. ZZE150 ZRE151,152 NDE150.Система Управления Двигателем 1Nd-Tv.Система Ecd. Dtc P0400 Exhaust Gas Recirculation Flow

  1. Disconnect the EGR valve assembly connector.

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

    Standard resistance:
    Tester Connection
    		Condition
    		Specified Condition
    B69-5 (+B2) - B69-4 (EGR1)
    		20°C (68°F)
    		18.2 to 21.0 Ω
    B69-5 (+B2) - B69-6 (EGR3)
    		20°C (68°F)
    		18.2 to 21.0 Ω
    B69-2 (+B1) - B69-1 (EGR2)
    		20°C (68°F)
    		18.2 to 21.0 Ω
    B69-2 (+B1) - B69-3 (EGR4)
    		20°C (68°F)
    		18.2 to 21.0 Ω

  1. Reconnect the EGR valve assembly assembly.



NG
REPLACE EGR VALVE ASSEMBLY (Нажмите здесь)
OK


3.CHECK EGR VALVE ASSEMBLY (VOLTAGE)


    COROLLA, AURIS. ZZE150 ZRE151,152 NDE150.Система Управления Двигателем 1Nd-Tv.Система Ecd. Dtc P0400 Exhaust Gas Recirculation Flow

  1. Disconnect the EGR valve assembly connector.

  1. Turn the ignition switch to the ON position.

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

    Standard voltage:
    Tester Connection
    		Switch Condition
    		Specified Condition
    B69-2 (+B1) - Body ground
    		Ignition switch ON
    		9 to 14 V
    B69-5 (+B2) - Body ground
    		Ignition switch ON
    		9 to 14 V

  1. Reconnect the EGR valve assembly connector.



NG
Перейдите к шагу 10
OK


4.CHECK HARNESS AND CONNECTOR (EGR VALVE ASSEMBLY - ECM)


    COROLLA, AURIS. ZZE150 ZRE151,152 NDE150.Система Управления Двигателем 1Nd-Tv.Система Ecd. Dtc P0400 Exhaust Gas Recirculation Flow

  1. Disconnect the EGR valve assembly 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
    B69-4 (EGR1) - A57-12 (EGR1)
    		Always
    		Below 1 Ω
    B69-1 (EGR2) - A57-11 (EGR2)
    		Always
    		Below 1 Ω
    B69-6 (EGR3) - A57-31 (EGR3)
    		Always
    		Below 1 Ω
    B69-3 (EGR4) - A57-30 (EGR4)
    		Always
    		Below 1 Ω
    Standard resistance (Check for short):
    Tester Connection
    		Condition
    		Specified Condition
    B69-4 (EGR1) or A57-12 (EGR1) - Body ground
    		Always
    		10 kΩ or higher
    B69-1 (EGR2) or A57-11 (EGR2) - Body ground
    		Always
    		10 kΩ or higher
    B69-6 (EGR3) or A57-31 (EGR3) - Body ground
    		Always
    		10 kΩ or higher
    B69-3 (EGR4) or A57-30 (EGR4) - Body ground
    		Always
    		10 kΩ or higher

  1. Reconnect the EGR valve assembly connector.

  1. Reconnect the ECM connector.



NG
REPAIR OR REPLACE HARNESS OR CONNECTOR (EGR VALVE ASSEMBLY - ECM)
OK


5.CHECK FOR DEPOSIT (EGR VALVE ASSEMBLY)
OK:
No deposit


NG
REPAIR OR REPLACE EGR VALVE ASSEMBLY (Нажмите здесь)
OK


6.CHECK FOR DEPOSIT (EGR PASSAGE)
OK:
No deposit


NG
REPAIR OR REPLACE MALFUNCTIONING PARTS
OK


7.INSPECT FOR EXHAUST GAS LEAK

  1. Check for exhaust gas leaks (See page Нажмите здесь).

    OK:
    No leakage


NG
REPAIR OR REPLACE EXHAUST GAS LEAKAGE POINT (Нажмите здесь)
OK


8.INSPECT DIESEL THROTTLE BODY ASSEMBLY


    COROLLA, AURIS. ZZE150 ZRE151,152 NDE150.Система Управления Двигателем 1Nd-Tv.Система Ecd. Dtc P0400 Exhaust Gas Recirculation Flow

  1. Disconnect the diesel throttle body assembly connector.

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

    Standard resistance:
    Tester Connection
    		Condition
    		Specified Condition
    1 (CL+) - 3 (CL-)
    		20°C (68°F)
    		0.3 to 100 Ω

  1. Reconnect the diesel throttle body assembly connector.



NG
REPLACE DIESEL THROTTLE BODY ASSEMBLY (Нажмите здесь)
OK


9.READ VALUE USING INTELLIGENT TESTER (MAF)
ПРИМЕЧАНИЕ:
  1. Perform the inspection with the vehicle indoors and on a level surface.
  2. Perform the inspection of the mass air flow meter while it is installed to the air cleaner case (installed to the vehicle).
  3. During the test, do not use the exhaust air duct to perform suction on the exhaust pipe.

  1. Turn the ignition switch to the ON position.

    ПРИМЕЧАНИЕ:
    Do not run the engine.

  1. Turn the tester on.

  1. Enter the following menu items: Powertrain / Engine and ECT / Data List / MAF.

  1. Wait 30 seconds, and read the values on the tester.

    Standard:
    Less than 0.23 g/sec.


NG
REPLACE MASS AIR FLOW METER (Нажмите здесь)
OK

REPLACE EGR VALVE ASSEMBLY (Нажмите здесь)

10.INSPECT FUSE (EFI NO. 2 FUSE)


    COROLLA, AURIS. ZZE150 ZRE151,152 NDE150.Система Управления Двигателем 1Nd-Tv.Система Ecd. Dtc P0400 Exhaust Gas Recirculation Flow

  1. Remove the EFI No. 2 fuse from the engine room relay block.

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

    Standard resistance:
    Tester Connection
    		Condition
    		Specified Condition
    EFI No. 2 fuse
    		Always
    		Below 1 Ω

  1. Reinstall the EFI No. 2 fuse.



NG
REPLACE FUSE (EFI NO. 2 FUSE)
OK

REPAIR OR REPLACE HARNESS OR CONNECTOR (EGR VALVE ASSEMBLY - INTEGRATION RELAY (EFI MAIN RELAY))