Last Modified: 05-13-2024 6.11:8.1.0 Doc ID: RM100000001NMQB
Model Year Start: 2021 Model: Corolla Prod Date Range: [04/2020 - 09/2022]
Title: 2ZR-FXE (ENGINE CONTROL): SFI SYSTEM: P10AA00,P219A00,P219C00-P219F00; Clogged EGR Port Imbalance Bank1; 2021 - 2022 MY Corolla Corolla HV [04/2020 - 09/2022]

DTC

P10AA00

Clogged EGR Port Imbalance Bank1

DTC

P219A00

Bank 1 Air-Fuel Ratio Imbalance

DTC

P219C00

Cylinder 1 Air-Fuel Ratio Imbalance

DTC

P219D00

Cylinder 2 Air-Fuel Ratio Imbalance

DTC

P219E00

Cylinder 3 Air-Fuel Ratio Imbalance

DTC

P219F00

Cylinder 4 Air-Fuel Ratio Imbalance

DESCRIPTION

Refer to DTC P030000.

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Refer to DTC P040000.

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Refer to DTC P219519.

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DTC No.

Detection Item

DTC Detection Condition

Trouble Area

MIL

Memory

Note

P10AA00

Clogged EGR Port Imbalance Bank1

The difference in the air fuel ratios between the cylinders exceeds the threshold when the EGR valve is open (2 trip detection logic).

Intake manifold

Comes on / Does not come on

DTC stored

  • SAE Code: P10AA
  • DTC for Mexico Models: Applies

P219A00

Bank 1 Air-Fuel Ratio Imbalance

The difference in air fuel ratios between the cylinders exceeds the threshold (2 trip detection logic).

  • Fuel injector assembly
  • Intake system
  • Gas leaks from exhaust system
  • Ignition system
  • Compression pressure
  • Air fuel ratio sensor (sensor 1)
  • ECM

Comes on

DTC stored

  • SAE Code: P219A
  • DTC for Mexico Models: Does not apply

P219C00

Cylinder 1 Air-Fuel Ratio Imbalance

The difference in air fuel ratios between the cylinders exceeds the threshold (2 trip detection logic).

  • Fuel injector assembly
  • Intake system
  • Gas leaks from exhaust system
  • Ignition system
  • Compression pressure
  • Air fuel ratio sensor (sensor 1)
  • ECM

Comes on

DTC stored

  • SAE Code: P219C
  • DTC for Mexico Models: Does not apply

P219D00

Cylinder 2 Air-Fuel Ratio Imbalance

The difference in air fuel ratios between the cylinders exceeds the threshold (2 trip detection logic).

  • Fuel injector assembly
  • Intake system
  • Gas leaks from exhaust system
  • Ignition system
  • Compression pressure
  • Air fuel ratio sensor (sensor 1)
  • ECM

Comes on

DTC stored

  • SAE Code: P219D
  • DTC for Mexico Models: Does not apply

P219E00

Cylinder 3 Air-Fuel Ratio Imbalance

The difference in air fuel ratios between the cylinders exceeds the threshold (2 trip detection logic).

  • Fuel injector assembly
  • Intake system
  • Gas leaks from exhaust system
  • Ignition system
  • Compression pressure
  • Air fuel ratio sensor (sensor 1)
  • ECM

Comes on

DTC stored

  • SAE Code: P219E
  • DTC for Mexico Models: Does not apply

P219F00

Cylinder 4 Air-Fuel Ratio Imbalance

The difference in air fuel ratios between the cylinders exceeds the threshold (2 trip detection logic).

  • Fuel injector assembly
  • Intake system
  • Gas leaks from exhaust system
  • Ignition system
  • Compression pressure
  • Air fuel ratio sensor (sensor 1)
  • ECM

Comes on

DTC stored

  • SAE Code: P219F
  • DTC for Mexico Models: Does not apply

MONITOR DESCRIPTION

Fuel System Air Fuel Ratio Cylinder Imbalance Monitor

The ECM uses the air fuel ratio sensor, crankshaft position sensor and EGR valve assembly to monitor the difference in air fuel ratios between the cylinders caused by differences in fuel injection volume between the cylinders, leakage in the intake or exhaust system, etc.

When the air fuel ratios of the cylinders are lean or rich with respect to each other, the ECM determines that there is a malfunction, illuminates the MIL and stores a DTC.

EGR Port Clogged Monitoring Method: P10AA00 is stored primarily when a rich side imbalance for clogged EGR port is detected.

By comparing the air fuel ratio when EGR valve is open and closed, a clog in an EGR port can be detected. If an EGR port is clogged when the EGR valve is open, the ECM will store a DTC.

Air Fuel Ratio Sensor Monitoring Method: P219A00 is stored primarily when a rich side imbalance is detected.

When the system detects a difference in air fuel ratios between the cylinders due to fluctuation in the air fuel ratio sensor output over 1 engine cycle (2 crankshaft revolutions), the ECM determines that there is a malfunction.

Crankshaft Position Sensor Monitoring Method: P219C00, P219D00, P219E00 and/or P219F00 are stored primarily when a lean side imbalance is detected.

The system monitors the engine speed variation and when the variation becomes large, the ECM determines that there is a difference in air fuel ratios between the cylinders, which it determines to be a malfunction.

MONITOR STRATEGY

Related DTCs

P10AA: Air fuel ratio cylinder imbalance monitor for clogged EGR runner

P219A: Air fuel ratio cylinder imbalance monitor

P219C: Air fuel ratio cylinder imbalance monitor (cylinder 1)

P219D: Air fuel ratio cylinder imbalance monitor (cylinder 2)

P219E: Air fuel ratio cylinder imbalance monitor (cylinder 3)

P219F: Air fuel ratio cylinder imbalance monitor (cylinder 4)

Required Sensors/Components (Main)

EGR valve assembly

Air fuel ratio sensor

Crankshaft position sensor

Required Sensors/Components (Related)

Mass air flow meter sub-assembly

Engine coolant temperature sensor

Frequency of Operation

Once per driving cycle

Duration

Approximately 20 seconds: P10AA

20 seconds: P219A

10 to 15 seconds: Others

MIL Operation

2 driving cycles

Sequence of Operation

None

TYPICAL ENABLING CONDITIONS

P10AA, P219A

Monitor runs whenever the following DTCs are not stored

P0010 (Camshaft timing oil control valve)

P0011 (VVT system - advance)

P0012 (VVT system - retard)

P0016 (VVT system - misalignment)

P0031, P0032, P101D (Air fuel ratio sensor heater)

P0101, P0102, P0103 (Mass air flow meter)

P0107, P0108 (Manifold absolute pressure)

P0117, P0118 (Engine coolant temperature sensor)

P0121, P0122, P0123, P0222, P0223, P2135 (Throttle position sensor)

P0125 (Insufficient coolant temperature for closed loop fuel control)

P014C, P014D, P015A, P015B, P2195, P2196, P2237, P2238, P2239, P2252, P2253, P2A00 (Air fuel ratio sensor)

P0335 (Crankshaft position sensor)

P0340, P0342, P0343 (Camshaft position sensor)

P0351 - P0354 (Igniter)

P0400 (EGR system)

P0401 (EGR system (closed))

P0657, P0658, P2102, P2103 (Throttle actuator)

P219C, P219D, P219E and P219F

Monitor runs whenever the following DTCs are not stored

P0010 (Camshaft timing oil control valve)

P0011 (VVT system - advance)

P0012 (VVT system - retard)

P0016 (VVT system - misalignment)

P0101, P0102, P0103 (Mass air flow meter)

P0107, P0108 (Manifold absolute pressure)

P0112, P0113 (Intake air temperature sensor)

P0117, P0118 (Engine coolant temperature sensor)

P0121, P0122, P0123, P0222, P0223, P2135 (Throttle position sensor)

P0125 (Insufficient coolant temperature for closed loop fuel control)

P0327, P0328 (Knock control sensor)

P0335 (Crankshaft position sensor)

P0340, P0342, P0343 (Camshaft position sensor)

P0351 - P0354 (Igniter)

P0400 (EGR system)

P0401 (EGR system (closed))

P0657, P0658, P2102, P2103 (Throttle actuator)

P10AA: EGR Port Clogged Monitoring Method

Air fuel ratio sensor status

Activated

Engine coolant temperature

75°C (167°F) or higher

Atmospheric pressure

76 kPa(abs) [11 psi(abs)] or higher

Fuel cut

Off

EGR valve assembly malfunction

Not detected

Both of the following conditions are met

1 and 2

1. EGR on delta air fuel ratio parameter is calculated when all of the following conditions are met

-

Engine speed

1800 rpm or higher, and less than 2600 rpm

Fuel system status

Closed loop

Engine load

40% or higher, and less than 60%

EGR valve operation

More than 20 steps

2. EGR off delta air fuel ratio parameter is calculated when all of the following conditions are met

-

Engine speed

1200 rpm or higher, and less than 2600 rpm

Engine load

40% or higher, and less than 70%

EGR valve operation

0 steps or less

P219A: Air Fuel Ratio Sensor Monitoring Method

Air fuel ratio sensor status

Activated

Engine speed

1600 rpm or more, and less than 2400 rpm

Engine coolant temperature

75°C (167°F) or higher

Atmospheric pressure

76 kPa(abs) [11 psi(abs)] or higher

Fuel system status

Closed loop

Engine load

40% or more, and less than 60%

P219C, P219D, P219E and P219F: Crankshaft Position Sensor Monitoring Method (First Judgment)

Engine speed

1200 rpm or more, and less than 1600 rpm

Engine Load

40% or more, and less than 60%

Engine coolant temperature

75°C (167°F) or higher

Air fuel ratio sensor status

Activated

Fuel system status

Closed loop

Auxiliary battery voltage

11 V or higher

P219C, P219D, P219E and P219F: Crankshaft Position Sensor Monitoring Method (Second Judgment)

Vehicle speed

Less than 3 km/h (2 mph)

Engine speed

1050 rpm or more, and less than 1350 rpm

Engine coolant temperature

75°C (167°F) or higher

Air fuel ratio sensor status

Activated

Fuel system status

Closed loop

Auxiliary battery voltage

11 V or higher

TYPICAL MALFUNCTION THRESHOLDS

P10AA: EGR Port Clogged Monitoring Method

EGR port clogged monitoring method criteria

1 or more

P219A: Air Fuel Ratio Sensor Monitoring Method

Air fuel ratio sensor monitoring method criteria

1 or more

Crankshaft Position Sensor Monitoring Method (First Judgment)

Crankshaft position sensor monitoring method criteria (first judgment)

1.5 or more

Crankshaft Position Sensor Monitoring Method (Second Judgment)

Crankshaft position sensor monitoring method criteria (second judgment)

1 or more

HINT:

If the first judgment while driving shows that the value of Engine Speed Fluctuation Average is between 0.5 and 1.5, then second judgment will be performed when the vehicle is stopped and the engine is idling.

MONITOR RESULT

Refer to detailed information in Checking Monitor Status.

Click here 2020 - 2025 MY Corolla Corolla HV [01/2019 -        ]; 2ZR-FXE (ENGINE CONTROL): SFI SYSTEM: CHECKING MONITOR STATUS

P10AA: Fuel System / CLOGGED EGR PORT IMBALANCE B1

Monitor ID

Test ID

Scaling

Unit

Description

$81

$97

Multiply by 0.001

No dimension

Monitoring method using air fuel ratio sensor for clogged EGR port

P219A: Fuel System / A/F SENSOR DETERMINATION B1

Monitor ID

Test ID

Scaling

Unit

Description

$81

$95

Multiply by 0.001

No dimension

Monitoring method using air fuel ratio sensor

P219C: Fuel System / ENGINE SPEED FLUCTUATION AVERAGE #1

Monitor ID

Test ID

Scaling

Unit

Description

$81

$85

Multiply by 0.001

No dimension

Monitoring method using crank angle sensor

P219D: Fuel System / ENGINE SPEED FLUCTUATION AVERAGE #2

Monitor ID

Test ID

Scaling

Unit

Description

$81

$86

Multiply by 0.001

No dimension

Monitoring method using crank angle sensor

P219E: Fuel System / ENGINE SPEED FLUCTUATION AVERAGE #3

Monitor ID

Test ID

Scaling

Unit

Description

$81

$87

Multiply by 0.001

No dimension

Monitoring method using crank angle sensor

P219F: Fuel System / ENGINE SPEED FLUCTUATION AVERAGE #4

Monitor ID

Test ID

Scaling

Unit

Description

$81

$88

Multiply by 0.001

No dimension

Monitoring method using crank angle sensor

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

P10AA00

  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).

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  9. Start the engine and warm it up until the engine coolant temperature is 75°C (167°F) or higher [B].
  10. Turn the power switch off. [C]
  11. Turn the power switch on (READY).
  12. Start the engine by depressing the accelerator pedal approximately 40% and accelerating the vehicle from 10 km/h (6 mph) to a speed between 50 and 60 km/h (31 to 37 mph) in 10 to 15 seconds [D].

    CAUTION:

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

    HINT:

    If the engine does not start, further depress the accelerator pedal.

  13. Decelerate the vehicle to less than 10 km/h (6 mph) and allow the engine to stop [E].

    CAUTION:

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

    HINT:

    The vehicle can be decelerated by any method.

  14. Repeat steps [D] and [E] above 15 to 20 times [F].
  15. Enter the following menus: Powertrain / Engine / Trouble Codes [G].
  16. 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.
  17. Enter the following menus: Powertrain / Engine / Utility / All Readiness.
  18. Input the DTC: P10AA00.
  19. 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.
    • If the judgment result is INCOMPLETE, perform the confirmation driving pattern and check the judgment result again.
    • [A] to [G]: 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.

P219A00, P219C00, P219D00, P219E00 and P219F00

  1. Connect the Techstream to the DLC3.
  2. Turn the power switch on (IG).
  3. Turn the Techstream on.
  4. Put the engine in Inspection Mode (Maintenance Mode).

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  5. Start the engine and warm it up until the engine coolant temperature is 75°C (167°F) or higher [A].
  6. Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).

    NOTICE:

    Use the Techstream to clear the DTCs. (Do not disconnect the cable from negative (-) auxiliary battery terminal to clear the DTCs.)

  7. With the engine running, drive the vehicle at 40 km/h (25 mph) or higher.

    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.

  8. With the engine running, gradually accelerate the vehicle from 40 km/h (25 mph) to 80 km/h (50 mph) taking approximately 10 to 20 seconds [B].

    HINT:

    • Refer to engine load and engine speed in Typical Enabling Conditions, and then accelerate the vehicle to 80 km/h (50 mph).
    • If the engine stops, further depress the accelerator pedal to restart the engine.
  9. With the engine running, drive the vehicle at 80 km/h (50 mph) or higher for 1 minute or more [C].

    CAUTION:

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

    HINT:

    • Electrical load can be applied while the vehicle is driven.
    • If the engine stops, further depress the accelerator pedal to restart the engine.
  10. Idle the engine for 1 minute or more [D].

    HINT:

    Perform this step with drive (D) selected.

  11. Repeat steps [B] through [D] above at least 3 times [E].
  12. Enter the following menus: Powertrain / Engine / Trouble Codes [F].
  13. 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.
    • [A] to [F]: 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.
  14. With the engine running, drive the vehicle at 80 km/h (50 mph).

    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.

  15. With the engine running, gradually accelerate the vehicle from 80 km/h (50 mph) to 100 km/h (62 mph) taking approximately 5 to 15 seconds [G].

    CAUTION:

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

    HINT:

    • Refer to engine load and engine speed in Typical Enabling Conditions, and then accelerate the vehicle to 100 km/h (62 mph).
    • If the engine stops, further depress the accelerator pedal to restart the engine.
  16. With the engine running, drive the vehicle at 100 km/h (62 mph) or higher for 1 minute or more [H].

    CAUTION:

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

    HINT:

    • Electrical load can be applied while the vehicle is driven.
    • If the engine stops, further depress the accelerator pedal to restart the engine.
  17. Idle the engine for 1 minute or more [I].

    HINT:

    Perform this step with drive (D) selected.

  18. Repeat steps [G] through [I] above at least 2 times [J].
  19. Enter the following menus: Powertrain / Engine / Trouble Codes [K].
  20. 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.
  21. Enter the following menus: Powertrain / Engine / Utility / All Readiness.
  22. Input the DTC: P219A00, P219C00, P219D00, P219E00 or P219F00.
  23. 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 shows NORMAL, the system is normal.
    • If the judgment result shows ABNORMAL, the system has a malfunction.
    • If the judgment result shows INCOMPLETE, perform the confirmation driving pattern and check the judgment result again.
    • [A] to [K]: 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

Refer to Fuel Injector Circuit.

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

CAUTION / NOTICE / HINT

NOTICE:

  • 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.)

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  • 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:

  • Sensor 1 refers to the sensor closest to the engine assembly.
  • Sensor 2 refers to the sensor farthest away from the engine assembly.
  • When any air fuel ratio imbalance is detected, the ECM will perform air fuel ratio feedback control to make the air fuel ratio close to the stoichiometric air fuel ratio. This may result in an air fuel ratio imbalance of normal cylinders and DTCs may be stored.
  • 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.

CHECK ANY OTHER DTCS OUTPUT

(a) Connect the Techstream to the DLC3.

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

(c) Turn the Techstream on.

(d) Enter the following menus: Powertrain / Engine / Trouble Codes.

(e) Read the DTCs.

Powertrain > Engine > Trouble Codes

Result

Proceed to

DTC P10AA00, P219A00, P219C00, P219D00, P219E00 and/or P219F00 is output

A

DTC P10AA00, P219A00, P219C00, P219D00, P219E00 and/or P219F00 and other DTCs are output

B

HINT:

If any DTCs other than DTC P10AA00, P219A00, P219C00, P219D00, P219E00 and/or P219F00 are output, troubleshoot those DTCs first.

B

GO TO DTC CHART

A

2.

READ VALUE USING TECHSTREAM (FREEZE FRAME DATA)

(a) Connect the Techstream to the DLC3.

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

(c) Turn the Techstream on.

(d) Using the Techstream, confirm the vehicle conditions recorded in the freeze frame data which were present when the DTC was stored.

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

Freeze Frame Data Items for DTC P10AA00, P219A00, P219C00, P219D00, P219E00 and/or P219F00:

  • Vehicle Speed
  • Engine Speed
  • Calculate Load
  • Short FT B1S1
  • Long FT B1S1
  • Misfire Count Cylinder #1 to #4

HINT:

When the sum of Short FT B1S1 and Long FT B1S1 is positive, the engine is running lean, and when the sum is negative, the engine is running rich.

Air Fuel Ratio Sensor Monitoring Method (P219A00)

Crankshaft Position Sensor Monitoring Method (P219C00, P219D00, P219E00 and P219F00)

EGR Port Clogged Monitoring Method (P10AA00)

Note

-

-

DTC is output

Detected by EGR Port Clogged Monitoring Method.*1

DTC is output

DTC is output (Only one DTC relating to a single cylinder is output)

DTC is not output

Malfunctioning of cylinders detected by Crankshaft Position Sensor Monitoring Method is primarily suspected

DTC is output

DTCs are output (Multiple DTCs relating to multiple cylinders are output)

DTC is not output

Malfunctioning of cylinders except ones detected by Crankshaft Position Sensor Monitoring Method is primarily suspected.*2

DTC is not output

DTCs are output

DTC is not output

Malfunctioning of cylinders detected by Crankshaft Position Sensor Monitoring Method is primarily suspected.

DTC is output

DTCs are not output

DTC is not output

Malfunctioning of the bank detected by Air Fuel Ratio Sensor Monitoring Method is primarily suspected.

*1: Even if other DTCs are output, it is likely that an EGR port is clogged.

*2: When any air fuel ratio imbalance is detected, the ECM will perform air fuel ratio feedback control to make the air fuel ratio close to the stoichiometric air fuel ratio. This may result in an air fuel ratio imbalance of normal cylinders and DTCs may be stored.

NEXT

3.

READ OUTPUT DTC

(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) Drive the vehicle in accordance with Confirmation Driving Pattern.

HINT:

  • If any misfire count (Misfire Count Cylinder #1 to #4) increases while idling or driving the vehicle, proceed to step 7.
  • Perform inspections while focusing on the cylinder whose misfire count has increased.
  • Perform the confirmation driving patterns for both DTC P10AA00 and P219A00.

(f) Enter the following menus: Powertrain / Engine / Trouble Codes.

(g) Read the DTCs.

Powertrain > Engine > Trouble Codes

Result

Proceed to

DTC P10AA00 is output

A

DTC P219A00 is output

B

DTC P219A00 and P219C00, P219D00, P219E00 or P219F00 are output

C

DTC P219C00, P219D00, P219E00 and/or P219F00 is output

B

GO TO STEP 5

C

GO TO STEP 7

A

4.

REPLACE INTAKE MANIFOLD

(a) Replace the intake manifold.

Click here 2020 - 2022 MY Corolla Corolla HV [01/2019 - 09/2022]; 2ZR-FXE (INTAKE / EXHAUST): INTAKE MANIFOLD: REMOVAL

HINT:

Perform "Inspection After Repair" after replacing the intake system.

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

NEXT

GO TO STEP 14

5.

PERFORM ACTIVE TEST USING TECHSTREAM (CONTROL THE INJECTION VOLUME)

(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.

HINT:

The A/C switch and all accessories should be off and park (P) or neutral (N) should be selected.

(f) Enter the following menus: Powertrain / Engine / Active Test / Control the Injection Volume / Data List / Misfire Count Cylinder #1 to #4.

HINT:

When the "Control the Injection Volume" Active Test is selected (injection volume is 0%), if a misfire count increases, proceed to step 7 (Check Intake System).

Powertrain > Engine > Active Test

Active Test Display

Control the Injection Volume

Data List Display

Misfire Count Cylinder #1

Misfire Count Cylinder #2

Misfire Count Cylinder #3

Misfire Count Cylinder #4

(g) According to the display on the Techstream, perform the Active Test with the engine idling.

(h) Check the misfire counts (Misfire Count Cylinder #1 to #4) while decreasing the injection volume in 5% increments.

The cylinder whose misfire count has not increased can be assumed to be running rich. Therefore, perform inspections while focusing on that cylinder.

NEXT

6.

CHECK FOR EXHAUST GAS LEAK

(a) Check for exhaust gas leaks.

OK:

No gas leaks in exhaust system.

HINT:

Perform "Inspection After Repair" after repairing or replacing the exhaust system.

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

NG

REPAIR OR REPLACE EXHAUST SYSTEM

OK

7.

CHECK INTAKE SYSTEM

(a) Check the intake system for vacuum leaks.

Click here 2020 - 2022 MY Corolla Corolla HV [01/2019 - 09/2022]; 2ZR-FXE (INTAKE / EXHAUST): INTAKE SYSTEM: ON-VEHICLE INSPECTION

OK:

No leaks from the intake system.

HINT:

Perform "Inspection After Repair" after repairing or replacing the intake system.

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

NG

REPAIR OR REPLACE INTAKE SYSTEM

OK

8.

INSPECT SPARK PLUG

(a) Inspect the spark plug of the cylinder causing the imbalance.

Click here 2020 - 2025 MY Corolla Corolla HV [01/2019 -        ]; 2ZR-FXE (ENGINE CONTROL): IGNITION SYSTEM: ON-VEHICLE INSPECTION+

HINT:

Perform "Inspection After Repair" after replacing the spark plug.

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

NG

REPLACE SPARK PLUG

OK

9.

CHECK FOR SPARK (SPARK TEST)

(a) Perform a spark test.

Click here 2020 - 2025 MY Corolla Corolla HV [01/2019 -        ]; 2ZR-FXE (ENGINE CONTROL): IGNITION SYSTEM: ON-VEHICLE INSPECTION+

HINT:

  • If the result of the spark test is normal, proceed to the next step.
  • Perform "Inspection After Repair" after repairing or replacing the ignition system.

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

NEXT

10.

CHECK CYLINDER COMPRESSION PRESSURE

(a) Measure the cylinder compression pressure of the misfiring cylinder.

Click here 2020 - 2025 MY Corolla Corolla HV [01/2019 -        ]; 2ZR-FXE (ENGINE MECHANICAL): ENGINE: ON-VEHICLE INSPECTION+

HINT:

Perform "Inspection After Repair" after repairing or replacing the engine assembly.

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

NG

CHECK ENGINE TO DETERMINE CAUSE OF LOW COMPRESSION

OK

11.

CHECK TERMINAL VOLTAGE (POWER SOURCE OF FUEL INJECTOR ASSEMBLY)

*a

Front view of wire harness connector

(to Fuel Injector Assembly)

(a) Disconnect the fuel injector 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

C33-1 - Body ground

Power switch on (IG)

11 to 14 V

C34-1 - Body ground

Power switch on (IG)

11 to 14 V

C35-1 - Body ground

Power switch on (IG)

11 to 14 V

C36-1 - Body ground

Power switch on (IG)

11 to 14 V

NG

CHECK FUEL INJECTOR CIRCUIT

OK

12.

CHECK FUEL INJECTOR ASSEMBLY OF CYLINDER CAUSING IMBALANCE

(a) Check the fuel injector assembly injection (whether fuel volume is high or low, and whether injection pattern is poor).

Click here 2020 - 2025 MY Corolla Corolla HV [01/2019 -        ]; 2ZR-FXE (FUEL): FUEL INJECTOR: INSPECTION

HINT:

Perform "Inspection After Repair" after replacing the fuel injector assembly.

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

NG

REPLACE FUEL INJECTOR ASSEMBLY

OK

13.

CHECK FOR CAUSE OF FAILURE

(a) If the cause of the problem has not been found even after performing the troubleshooting procedure, perform the inspection below.

(b) Check the intake valve for deposits.

HINT:

As the DTC may have been stored due to deposits an the intake valve, remove the cylinder head and check the intake valves.

NEXT

14.

CLEAR DTC

(a) Connect the Techstream to the DLC3.

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

(c) Turn the Techstream on.

(d) Clear the DTCs.

Powertrain > Engine > Clear DTCs

(e) Turn the power switch off and wait for at least 30 seconds.

NEXT

15.

CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED

(a) Drive the vehicle in accordance with the driving pattern described in Confirmation Driving Pattern.

HINT:

Perform the appropriate confirmation driving patterns for the DTCs that were output.

(b) Enter the following menus: Powertrain / Engine / Trouble Codes.

(c) Check for DTCs.

Powertrain > Engine > Trouble Codes

OK:

DTCs are not output.

NEXT

END