Last Modified: 05-13-2024 |
6.11:8.1.0 |
Doc ID: RM1000000026JR6 |
Model Year Start: 2023 |
Model: Corolla |
Prod Date Range: [09/2022 -
] |
Title: 2ZR-FXE (ENGINE CONTROL): SFI SYSTEM: P219A00,P219C00-P219F00; Bank 1 Air-Fuel Ratio Imbalance; 2023 - 2025 MY Corolla Corolla HV [09/2022 - ] |
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.
Click here
Refer to DTC P040000.
Click here
Refer to DTC P219519.
Click here
DTC No.
|
Detection Item
|
DTC Detection Condition
|
Trouble Area
|
MIL
|
Memory
|
Note
|
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.
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
|
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
|
20 seconds: P219A
10 to 15 seconds: Others
|
MIL Operation
|
2 driving cycles
|
Sequence of Operation
|
None
|
TYPICAL ENABLING CONDITIONS
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)
|
P219A: Air Fuel Ratio Sensor Monitoring Method
Air fuel ratio sensor status
|
Activated
|
Engine speed
|
1400 rpm or more, and less than 2000 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
|
50% or more, and less than 65%
|
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
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
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
-
When clearing the permanent DTCs, refer to the "CLEAR PERMANENT DTC" procedure.
Click here
-
Connect the Techstream to the DLC3.
-
Turn the power switch on (IG).
-
Turn the Techstream on.
-
Put the engine in Inspection Mode (Maintenance Mode).
Click here
-
Start the engine and warm it up until the engine coolant temperature is 75°C (167°F) or higher [A].
-
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.)
-
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.
-
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.
-
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.
-
Idle the engine for 1 minute or more [D].
HINT:
Perform this step with drive (D) selected.
-
Repeat steps [B] through [D] above at least 3 times [E].
-
Enter the following menus: Powertrain / Engine / Trouble Codes [F].
-
Read the pending DTCs.
-
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.
-
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.
-
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.
-
Idle the engine for 1 minute or more [I].
HINT:
Perform this step with drive (D) selected.
-
Repeat steps [G] through [I] above at least 2 times [J].
-
Enter the following menus: Powertrain / Engine / Trouble Codes [K].
-
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.
-
Enter the following menus: Powertrain / Engine / Utility / All Readiness.
-
Input the DTC: P219A00, P219C00, P219D00, P219E00 or P219F00.
-
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
|
WIRING DIAGRAM
Refer to Fuel Injector Circuit.
Click here
CAUTION / NOTICE / HINT
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 P219A00, P219C00, P219D00, P219E00 and/or P219F00 is output
|
A
|
DTC P219A00, P219C00, P219D00, P219E00 and/or P219F00 and other DTCs are output
|
B
|
HINT:
If any DTCs other than DTC P219A00, P219C00, P219D00, P219E00 and/or P219F00 are output, troubleshoot those DTCs first.
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
Freeze Frame Data Items for DTC 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)
|
Note
|
-
|
-
|
Detected by EGR Port Clogged Monitoring Method.*1
|
DTC is output
|
DTC is output (Only one DTC relating to a single cylinder is 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)
|
Malfunctioning of cylinders except ones detected by Crankshaft Position Sensor Monitoring Method is primarily suspected.*2
|
DTC is not output
|
DTCs are output
|
Malfunctioning of cylinders detected by Crankshaft Position Sensor Monitoring Method is primarily suspected.
|
DTC is output
|
DTCs are 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
|
|
|
(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
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 P219A00.
(f) Enter the following menus: Powertrain / Engine / Trouble Codes.
(g) Read the DTCs.
Powertrain > Engine > Trouble Codes
Result
|
Proceed to
|
DTC P219A00 is output
|
A
|
DTC P219A00 and P219C00, P219D00, P219E00 or P219F00 are output
|
B
|
DTC P219C00, P219D00, P219E00 and/or P219F00 is output
|
A
|
|
|
4.
|
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
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
|
|
|
5.
|
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
NG |
|
REPAIR OR REPLACE EXHAUST SYSTEM
|
OK
|
|
|
(a) Check the intake system for vacuum leaks.
Click here
OK:
No leaks from the intake system.
HINT:
Perform "Inspection After Repair" after repairing or replacing the intake system.
Click here
NG |
|
REPAIR OR REPLACE INTAKE SYSTEM
|
OK
|
|
|
(a) Inspect the spark plug of the cylinder causing the imbalance.
Click here
HINT:
Perform "Inspection After Repair" after replacing the spark plug.
Click here
OK
|
|
|
8.
|
CHECK FOR SPARK (SPARK TEST)
|
(a) Perform a spark test.
Click here
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
NEXT
|
|
|
9.
|
CHECK CYLINDER COMPRESSION PRESSURE
|
(a) Measure the cylinder compression pressure of the misfiring cylinder.
Click here
HINT:
Perform "Inspection After Repair" after repairing or replacing the engine assembly.
Click here
NG |
|
CHECK ENGINE TO DETERMINE CAUSE OF LOW COMPRESSION
|
OK
|
|
|
10.
|
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 (#1) - Body ground
|
Power switch on (IG)
|
11 to 14 V
|
C34-1 (#2) - Body ground
|
Power switch on (IG)
|
11 to 14 V
|
C35-1 (#3) - Body ground
|
Power switch on (IG)
|
11 to 14 V
|
C36-1 (#4) - Body ground
|
Power switch on (IG)
|
11 to 14 V
|
OK
|
|
|
11.
|
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
HINT:
Perform "Inspection After Repair" after replacing the fuel injector assembly.
Click here
OK
|
|
|
12.
|
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
|
|
|
(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
|
|
|
14.
|
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
|
|