Last Modified: 05-13-2024 6.11:8.1.0 Doc ID: RM100000001NMPE
Model Year Start: 2021 Model: Corolla Prod Date Range: [04/2020 - 09/2022]
Title: 2ZR-FXE (ENGINE CONTROL): SFI SYSTEM: P040314,P140000,P140596,P141004; Exhaust Gas Recirculation "A" Control Circuit 1 Open; 2021 - 2022 MY Corolla Corolla HV [04/2020 - 09/2022]

DTC

P040314

Exhaust Gas Recirculation "A" Control Circuit 1 Open

DTC

P140000

Exhaust Gas Recirculation "A" Control Circuit 2 Open

DTC

P140596

Exhaust Gas Recirculation "A" Control Circuit 3 Open

DTC

P141004

Exhaust Gas Recirculation "A" Control Circuit 4 Open

DESCRIPTION

Refer to DTC P040000.

Click here 2021 - 2022 MY Corolla Corolla HV [04/2020 - 09/2022]; 2ZR-FXE (ENGINE CONTROL): SFI SYSTEM: P040000-P04029B; Exhaust Gas Recirculation "A" Flow+

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

MIL

Memory

Note

P040314

Exhaust Gas Recirculation "A" Control Circuit 1 Open

Open or short in EGR1 circuit for 1 second or more (1 trip detection logic).

  • Open or short in EGR valve assembly circuit
  • EGR valve assembly
  • ECM

Comes on

DTC stored

  • SAE Code: P0403
  • DTC for Mexico Models: Applies

P140000

Exhaust Gas Recirculation "A" Control Circuit 2 Open

Open or short in EGR2 circuit for 1 second or more (1 trip detection logic).

  • Open or short in EGR valve assembly circuit
  • EGR valve assembly
  • ECM

Comes on

DTC stored

  • SAE Code: P0403
  • DTC for Mexico Models: Applies

P140596

Exhaust Gas Recirculation "A" Control Circuit 3 Open

Open or short in EGR3 circuit for 1 second or more (1 trip detection logic).

  • Open or short in EGR valve assembly circuit
  • EGR valve assembly
  • ECM

Comes on

DTC stored

  • SAE Code: P0403
  • DTC for Mexico Models: Applies

P141004

Exhaust Gas Recirculation "A" Control Circuit 4 Open

Open or short in EGR4 circuit for 1 second or more (1 trip detection logic).

  • Open or short in EGR valve assembly circuit
  • EGR valve assembly
  • ECM

Comes on

DTC stored

  • SAE Code: P0403
  • DTC for Mexico Models: Applies

MONITOR DESCRIPTION

These DTCs are stored if an open or short in the EGR valve assembly circuit is detected.

Example:

  • If the EGR1, EGR2, EGR3 or EGR4 terminal output voltage is excessively low, but the step motor is still operating, the ECM determines that there is a short in the EGR valve assembly circuit, illuminate the MIL and stores a DTC.
  • If the EGR1, EGR2, EGR3 or EGR4 terminal output voltage is excessively low, and the step motor is not operating, the ECM determines that there is an open in the EGR valve assembly circuit, illuminate the MIL and stores a DTC.

MONITOR STRATEGY

Related DTCs

P0403: EGR valve circuit range check

Required Sensors/Components (Main)

EGR valve assembly

Required Sensors/Components (Related)

-

Frequency of Operation

Continuous

Duration

1 second

MIL Operation

Immediate

Sequence of Operation

None

TYPICAL ENABLING CONDITIONS

All

Monitor runs whenever the following DTCs are not stored

None

All of the following conditions are met

-

Engine

Running

Auxiliary battery voltage

10.5 V or higher

Time after power switch off to on (IG)

0.5 seconds or more

Range Check (EGR1)

Either of the following conditions is met

1 or 2

1. Both of the following conditions are met

(a) and (b)

(a) Motor

Not driving

(b) Command to motor phase 1 (EGR1)

Off

2. Motor

Driving

Range Check (EGR2)

Either of the following conditions is met

1 or 2

1. Both of the following conditions are met

(a) and (b)

(a) Motor

Not driving

(b) Command to motor phase 2 (EGR2)

Off

2. Motor

Driving

Range Check (EGR3)

Either of the following conditions is met

1 or 2

1. Both of the following conditions are met

(a) and (b)

(a) Motor

Not driving

(b) Command to motor phase 3 (EGR3)

Off

2. Motor

Driving

Range Check (EGR4)

Either of the following conditions is met

1 or 2

1. Both of the following conditions are met

(a) and (b)

(a) Motor

Not driving

(b) Command to motor phase 4 (EGR4)

Off

2. Motor

Driving

TYPICAL MALFUNCTION THRESHOLDS

Range Check (EGR1)

Motor phase 1 (EGR1) output terminal voltage level

Low

Range Check (EGR2)

Motor phase 2 (EGR2) output terminal voltage level

Low

Range Check (EGR3)

Motor phase 3 (EGR3) output terminal voltage level

Low

Range Check (EGR4)

Motor phase 4 (EGR4) output terminal voltage level

Low

CONFIRMATION DRIVING PATTERN

HINT:

  • After repair has been completed, clear the DTC and then check that the vehicle has returned to normal by performing the following All Readiness check procedure.

    Click here 2020 - 2022 MY Corolla Corolla HV [01/2019 - 09/2022]; 2ZR-FXE (ENGINE CONTROL): SFI SYSTEM: DTC CHECK / CLEAR

  • When clearing the permanent DTCs, refer to the "CLEAR PERMANENT DTC" procedure.

    Click here 2020 - 2022 MY Corolla Corolla HV [01/2019 - 09/2022]; 2ZR-FXE (ENGINE CONTROL): SFI SYSTEM: DTC CHECK / CLEAR

  1. Connect the Techstream to the DLC3.
  2. Turn the power switch on (IG).
  3. Turn the Techstream on.
  4. Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).
  5. Turn the power switch off and wait for at least 30 seconds.
  6. Turn the power switch on (IG) [A].
  7. Turn the Techstream on.
  8. Put the engine in Inspection Mode (Maintenance Mode).

    Click here 2019 - 2025 MY Corolla Corolla Hatchback Corolla HV GR Corolla [06/2018 -        ]; INTRODUCTION: REPAIR INSTRUCTION: INSPECTION MODE PROCEDURE

  9. Start the engine and warm it up [B].
  10. With the engine running, drive the vehicle at 20 km/h (12 mph) or more for 10 minutes or more [C].

    CAUTION:

    When performing the confirmation driving pattern, obey all speed limits and traffic laws.

    HINT:

    If the engine stops, further depress the accelerator pedal to restart the engine.

  11. Enter the following menus: Powertrain / Engine / Trouble Codes [D].
  12. Read the pending DTCs.

    HINT:

    • If a pending DTC is output, the system is malfunctioning.
    • If a pending DTC is not output, perform the following procedure.
  13. Enter the following menus: Powertrain / Engine / Utility / All Readiness.
  14. Input the DTC: P040314, P140000, P140596 or P141004.
  15. Check the DTC judgment result.

    Techstream Display

    Description

    NORMAL

    • DTC judgment completed
    • System normal

    ABNORMAL

    • DTC judgment completed
    • System abnormal

    INCOMPLETE

    • DTC judgment not completed
    • Perform driving pattern after confirming DTC enabling conditions

    HINT:

    • If the judgment result is NORMAL, the system is normal.
    • If the judgment result is ABNORMAL, the system is malfunctioning.
    • [A] to [D]: Normal judgment procedure.

      The normal judgment procedure is used to complete DTC judgment and also used when clearing permanent DTCs.

    • When clearing the permanent DTCs, do not disconnect the cable from the auxiliary battery terminal or attempt to clear the DTCs during this procedure, as doing so will clear the universal trip and normal judgment histories.

WIRING DIAGRAM

CAUTION / NOTICE / HINT

NOTICE:

  • Inspect the fuses for circuits related to this system before performing the following procedure.
  • Vehicle Control History may be stored in the hybrid vehicle control ECU if the engine is malfunctioning. Certain vehicle condition information is recorded when Vehicle Control History is stored. Reading the vehicle conditions recorded in both the freeze frame data and Vehicle Control History can be useful for troubleshooting.

    - for Nickel Metal Hydride Battery: Click here 2020 - 2022 MY Corolla Corolla HV [01/2019 - 09/2022]; HYBRID / BATTERY CONTROL: HYBRID CONTROL SYSTEM (for NICKEL METAL HYDRIDE BATTERY): VEHICLE CONTROL HISTORY

    - for Lithium-ion Battery: Click here 2021 - 2022 MY Corolla Corolla HV [04/2020 - 09/2022]; HYBRID / BATTERY CONTROL: HYBRID CONTROL SYSTEM (for LITHIUM-ION BATTERY with P610): VEHICLE CONTROL HISTORY

    (Select Powertrain in Health Check and then check the time stamp data.)

    Click here 2020 - 2022 MY Corolla Corolla HV [01/2019 - 09/2022]; 2ZR-FXE (ENGINE CONTROL): SFI SYSTEM: DTC CHECK / CLEAR

  • If any "Engine Malfunction" Vehicle Control History item has been stored in the hybrid vehicle control ECU, make sure to clear it. However, as all Vehicle Control History items are cleared simultaneously, if any Vehicle Control History items other than "Engine Malfunction" are stored, make sure to perform any troubleshooting for them before clearing Vehicle Control History.

    - for Nickel Metal Hydride Battery: Click here 2020 - 2022 MY Corolla Corolla HV [01/2019 - 09/2022]; HYBRID / BATTERY CONTROL: HYBRID CONTROL SYSTEM (for NICKEL METAL HYDRIDE BATTERY): VEHICLE CONTROL HISTORY

    - for Lithium-ion Battery: Click here 2021 - 2022 MY Corolla Corolla HV [04/2020 - 09/2022]; HYBRID / BATTERY CONTROL: HYBRID CONTROL SYSTEM (for LITHIUM-ION BATTERY with P610): VEHICLE CONTROL HISTORY

HINT:

Read freeze frame data using the Techstream. 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, if the air fuel ratio was lean or rich, and other data from the time the malfunction occurred.

PROCEDURE

1.

PERFORM ACTIVE TEST USING TECHSTREAM (CONTROL THE EGR STEP POSITION)

(a) Connect the Techstream to the DLC3.

(b) Turn the power switch on (IG).

(c) Turn the Techstream on.

(d) Put the engine in Inspection Mode (Maintenance Mode).

Click here 2019 - 2025 MY Corolla Corolla Hatchback Corolla HV GR Corolla [06/2018 -        ]; INTRODUCTION: REPAIR INSTRUCTION: INSPECTION MODE PROCEDURE

Powertrain > Hybrid Control > Utility

Tester Display

Inspection Mode

(e) Start the engine and warm it up until the engine coolant temperature is 75°C (167°F) or higher.

HINT:

The A/C switch and all accessories should be off.

(f) Enter the following menus: Powertrain / Engine / Active Test / Control the EGR Step Position / Data List / Intake Manifold Absolute Pressure and Engine Independent.

Powertrain > Engine > Active Test

Active Test Display

Control the EGR Step Position

Data List Display

Intake Manifold Absolute Pressure

Engine Independent

(g) Confirm that the value of Data List item Engine Independent is "Operate" then check the value of Intake Manifold Absolute Pressure while performing the Active Test.

NOTICE:

  • Do not leave the EGR valve open for 10 seconds or more during the Active Test.
  • Be sure to return the EGR valve to step 0 when the Active Test is completed.
  • Do not open the EGR valve 30 steps or more during the Active Test.

OK:

The value of Intake Manifold Absolute Pressure changes in response to the EGR step position when the value of Engine Independent is "Operate".

Standard:

-

Control the EGR Step Position (Active Test)

0 Steps

0 to 30 Steps

Intake Manifold Absolute Pressure

(Data List)

(EGR valve is fully closed)

Intake Manifold Absolute Pressure value is at least +10 kPa (1.45 psi) higher than when EGR valve is fully closed

HINT:

  • If the value of Data List item Engine Independent is "Not Opr" when the engine is idling, charge control is being performed. Perform the Active Test after charge control is complete ("Operate" is displayed).
  • While performing the Active Test, if the increase in the value of Intake Manifold Absolute Pressure is small, the EGR valve assembly may be malfunctioning.
  • Even if the EGR valve assembly is malfunctioning, rough idling or an increase in the value of Intake Manifold Absolute Pressure may occur while performing the Active Test. However, the amount that the value of Intake Manifold Absolute Pressure increases will be smaller than normal.
OK

CHECK FOR INTERMITTENT PROBLEMS

NG

2.

INSPECT EGR VALVE ASSEMBLY

(a) Inspect the EGR valve assembly.

Click here 2020 - 2025 MY Corolla Corolla HV [01/2019 -        ]; 2ZR-FXE (EMISSION CONTROL): EGR VALVE: INSPECTION

HINT:

Perform "Inspection After Repair" after replacing the EGR valve assembly.

Click here 2020 - 2022 MY Corolla Corolla HV [01/2019 - 09/2022]; 2ZR-FXE (ENGINE CONTROL): SFI SYSTEM: INITIALIZATION

NG

REPLACE EGR VALVE ASSEMBLY

OK

3.

CHECK TERMINAL VOLTAGE (POWER SOURCE OF EGR VALVE ASSEMBLY)

*a

Front view of wire harness connector

(to EGR Valve Assembly)

(a) Disconnect the EGR valve assembly connector.

(b) Turn the power switch on (IG).

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

Standard Voltage:

Tester Connection

Condition

Specified Condition

C53-2 (+B1) - Body ground

Power switch on (IG)

11 to 14 V

C53-5 (+B2) - Body ground

Power switch on (IG)

11 to 14 V

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR (NO. 1 INTEGRATION RELAY - EGR VALVE ASSEMBLY)

OK

4.

CHECK HARNESS AND CONNECTOR (EGR VALVE ASSEMBLY - ECM)

(a) Disconnect the EGR valve assembly connector.

(b) Disconnect the ECM connector.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

C53-4 (EGR1) - C77-140 (EGR1)

Always

Below 1 Ω

C53-3 (EGR2) - C77-106 (EGR2)

Always

Below 1 Ω

C53-6 (EGR3) - C77-107 (EGR3)

Always

Below 1 Ω

C53-1 (EGR4) - C77-105 (EGR4)

Always

Below 1 Ω

C53-4 (EGR1) or C77-140 (EGR1) - Body ground and other terminals

Always

10 kΩ or higher

C53-3 (EGR2) or C77-106 (EGR2) - Body ground and other terminals

Always

10 kΩ or higher

C53-6 (EGR3) or C77-107 (EGR3) - Body ground and other terminals

Always

10 kΩ or higher

C53-1 (EGR4) or C77-105 (EGR4) - Body ground and other terminals

Always

10 kΩ or higher

OK

REPLACE ECM

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR