- Fuel injector assembly
- Intake system
- Gas leak from exhaust system
- Ignition system
- Compression pressure
- Air fuel ratio sensor (bank 1 sensor 1)
- ECM
| Last Modified: 04-05-2023 | 6.11:8.1.0 | Doc ID: RM100000000VICB |
| Model Year Start: 2016 | Model: Sienna | Prod Date Range: [12/2015 - 08/2016] |
| Title: 2GR-FE (ENGINE CONTROL): SFI SYSTEM: P219A-P219F,P21A0,P21A1; Bank 1 Air-Fuel Ratio Imbalance; 2016 MY Sienna [12/2015 - 08/2016] | ||
|
DTC |
P219A |
Bank 1 Air-Fuel Ratio Imbalance |
|
DTC |
P219B |
Bank 2 Air-Fuel Ratio Imbalance |
|
DTC |
P219C |
Cylinder 1 Air-Fuel Ratio Imbalance |
|
DTC |
P219D |
Cylinder 2 Air-Fuel Ratio Imbalance |
|
DTC |
P219E |
Cylinder 3 Air-Fuel Ratio Imbalance |
|
DTC |
P219F |
Cylinder 4 Air-Fuel Ratio Imbalance |
|
DTC |
P21A0 |
Cylinder 5 Air-Fuel Ratio Imbalance |
|
DTC |
P21A1 |
Cylinder 6 Air-Fuel Ratio Imbalance |
DESCRIPTION
Refer to DTC P0300 (See page
![2016 MY Sienna [12/2015 - 08/2016]; 2GR-FE (ENGINE CONTROL): SFI SYSTEM: P0300-P0306; Random / Multiple Cylinder Misfire Detected+](/t3Portal/stylegraphics/info.gif)
).
Refer to DTC P2195, P2197 (See page
).
|
DTC No. |
DTC Detection Condition |
Trouble Area |
|---|---|---|
|
P219A |
The difference in air fuel ratio between the cylinders exceeds the threshold (2 trip detection logic). |
|
|
P219B |
The difference in air fuel ratio between the cylinders exceeds the threshold (2 trip detection logic). |
|
|
P219C |
The difference in air fuel ratio between the cylinders exceeds the threshold (2 trip detection logic). |
|
|
P219D |
The difference in air fuel ratio between the cylinders exceeds the threshold (2 trip detection logic). |
|
|
P219E |
The difference in air fuel ratio between the cylinders exceeds the threshold (2 trip detection logic). |
|
|
P219F |
The difference in air fuel ratio between the cylinders exceeds the threshold (2 trip detection logic). |
|
|
P21A0 |
The difference in air fuel ratio between the cylinders exceeds the threshold (2 trip detection logic). |
|
|
P21A1 |
The difference in air fuel ratio between the cylinders exceeds the threshold (2 trip detection logic). |
|
MONITOR DESCRIPTION
Fuel System Air Fuel Ratio Cylinder Imbalance Monitor
The ECM uses the air fuel ratio sensor and crankshaft position sensor to monitor the difference in air fuel ratio between the cylinders caused by differences in 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 a problem is present and stores a DTC.
Air Fuel Ratio Sensor Monitoring Method: P219A and/or P219B are stored primarily when a rich side imbalance is detected.
When the system detects a difference in the air fuel ratio between the cylinders due to fluctuation of the air fuel ratio sensor output over 1 engine cycle (2 crankshaft revolutions), the system determines that there is a problem.
Crankshaft Position Sensor Monitoring Method: P219A, P219B, P219C, P219D, P219E, P219F, P21A0 and/or P21A1 are stored primarily when a lean side imbalance is detected.
The system monitors the engine speed variation and when the variation becomes large, the system determines that there is a difference in the air fuel ratio between the cylinders, which it determines to be a problem.
MONITOR STRATEGY
|
Related DTCs |
P219A: Air fuel ratio cylinder imbalance monitor (bank 1) P219B: Air fuel ratio cylinder imbalance monitor (bank 2) 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) P21A0: Air fuel ratio cylinder imbalance monitor (cylinder 5) P21A1: Air fuel ratio cylinder imbalance monitor (cylinder 6) |
|
Required Sensors/Components (Main) |
Air fuel ratio sensor, Crankshaft position sensor |
|
Required Sensors/Components (Related) |
Mass air flow meter sub-assembly, Engine coolant temperature sensor, Vehicle speed sensor |
|
Frequency of Operation |
Once per driving cycle |
|
Duration |
10 seconds: P219A and P219B 30 seconds: Others |
|
MIL Operation |
2 driving cycles |
|
Sequence of Operation |
None |
TYPICAL ENABLING CONDITIONS
P219A and P219B
|
Monitor runs whenever following DTCs are not present |
P0010, P0020 (Camshaft timing oil control valve bank 1, 2) P0011, P0021 (VVT system bank 1, 2 - advance) P0012, P0022 (VVT system bank 1, 2 - retard) P0013, P0023 (Exhaust camshaft timing oil control valve bank 1, 2) P0014, P0024 (Exhaust VVT system bank 1, 2 - advance) P0015, P0025 (Exhaust VVT system bank 1, 2 - retard) P0016, P0018 (VVT system bank 1, 2 - misalignment) P0017, P0019 (Exhaust VVT system bank 1, 2 - misalignment) P0031, P0032, P0051, P0052, P101D, P103D (Air fuel ratio sensor heater) P0102, P0103 (Mass air flow meter) P0115, P0117, P0118 (Engine coolant temperature sensor) P0120, P0121, P0122, P0123, P0220, P0222, P0223, P2135 (Throttle position sensor) P0125 (Insufficient coolant temperature for closed loop fuel control) P0335 (Crankshaft position sensor) P0340, P0342, P0343, P0345, P0347, P0348 (VVT sensor) P0351, P0352, P0353, P0354, P0355, P0356 (Igniter) P0365, P0367, P0368, P0390, P0392, P0393 (Exhaust VVT sensor) P0500 (Vehicle speed sensor) |
P219C, P219D, P219E, P219F, P21A0 and P21A1
|
Monitor runs whenever following DTCs are not present |
None |
P219A and P219B: Air Fuel Ratio Sensor Monitoring Method
|
Air fuel ratio sensor status |
Activated |
|
Engine speed |
1400 rpm or higher, and less than 2200 rpm |
|
Engine coolant temperature |
75°C (167°F) or higher |
|
Atmospheric pressure |
76 kPa(abs) [570 mmHg(abs)] or higher |
|
Fuel system status |
Closed loop |
|
Engine load |
45% or higher, or less than 60% |
P219C, P219D, P219E, P219F, P21A0 and P21A1: Crankshaft Position Sensor Monitoring Method
|
Vehicle speed |
10 km/h (6.25 mph) or more |
|
Engine speed |
1400 rpm or higher, and less than 2200 rpm |
|
Engine coolant temperature |
75°C (167°F) or higher |
|
Air fuel ratio sensor status |
Activated |
|
Fuel system status |
Closed loop |
|
Battery voltage |
11 V or higher |
|
Engine load |
35% or higher, or less than 70% |
TYPICAL MALFUNCTION THRESHOLDS
P219A and P219B: Air Fuel Ratio Sensor Monitoring Method
|
Air fuel ratio sensor monitoring method criteria (rich side imbalance) |
0.123 or more (for 2WD (bank 1)) 0.12715 or more (for 4WD (bank 1)) 0.1155 or more (for 2WD (bank 2)) 0.13165 or more (for 4WD (bank 2)) |
P219C, P219D, P219E, P219F, P21A0 and P21A1: Crankshaft Position Sensor Monitoring Method
|
Crankshaft position sensor monitoring method criteria (lean side imbalance) |
1 or more |
MONITOR RESULT
Refer to Checking Monitor Status (See page
).
CONFIRMATION DRIVING PATTERN
- Connect the Techstream to the DLC3.
- Turn the ignition switch to ON.
- Turn the Techstream on.
-
Start the engine and warm it up until the engine coolant temperature reaches 75°C (167°F) or higher [A].
HINT:
The A/C switch and all accessory switches should be off and the shift lever should be in P or N.
- Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).
-
Drive the vehicle at 60 km/h (37 mph) or higher for 2 minutes or more [B].
CAUTION:
When performing the confirmation driving pattern, obey all speed limits and traffic laws.
HINT:
It is acceptable to turn electrical loads on while driving.
- Enter the following menus: Powertrain / Engine / Trouble Codes [C].
-
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.
-
Drive the vehicle at less than 30 km/h (18.65 mph) for 5 seconds or more [D].
CAUTION:
When performing the confirmation driving pattern, obey all speed limits and traffic laws.
-
Accelerate the vehicle from 30 to 60 km/h (18.65 to 37 mph) over a period of approximately 10 to 20 seconds.
CAUTION:
When performing the confirmation driving pattern, obey all speed limits and traffic laws.
HINT:
Refer to the values of mass air flow and engine speed in Typical Enabling Conditions before accelerating the vehicle from 30 to 60 km/h (18.65 to 37 mph).
-
Drive the vehicle at 60 km/h (37 mph) or more for 5 seconds or more [E].
CAUTION:
When performing the confirmation driving pattern, obey all speed limits and traffic laws.
-
Drive the vehicle at less than 30 km/h (18.65 mph) for 5 seconds or more [F].
CAUTION:
When performing the confirmation driving pattern, obey all speed limits and traffic laws.
-
Accelerate the vehicle from 30 to 60 km/h (18.65 to 37 mph) over a period of approximately 10 to 20 seconds.
CAUTION:
When performing the confirmation driving pattern, obey all speed limits and traffic laws.
HINT:
Refer to the values of mass air flow and engine speed in Typical Enabling Conditions before accelerating the vehicle from 30 to 60 km/h (18.65 to 37 mph).
-
Drive the vehicle at 60 km/h (37 mph) or more for 5 seconds or more [G].
CAUTION:
When performing the confirmation driving pattern, obey all speed limits and traffic laws.
- Repeat steps [F] and [G] above at least 2 times [H].
- Enter the following menus: Powertrain / Engine / Trouble Codes [I].
-
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: P219A, P219B, P219C, P219D, P219E, P219F, P21A0 or P21A1.
-
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
N/A
- Unable to perform DTC judgment
- Number of DTCs which do not fulfill DTC preconditions has reached ECU memory limit
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 or N/A, perform the following procedure.
-
If no pending DTC is output, perform a universal trip and check for permanent DTCs (See page
).
HINT:
- If a permanent DTC is output, the system is malfunctioning.
- If no permanent DTC is output, the system is normal.
WIRING DIAGRAM
Refer to Fuel Injector Circuit (See page
).
CAUTION / NOTICE / HINT
HINT:
- Read freeze frame data using the Techstream. Freeze frame data records the engine condition when malfunctions are detected. 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.
- 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 level. This may result in an air fuel ratio imbalance of normal cylinders and DTCs may be stored.
PROCEDURE
|
1. |
CHECK ANY OTHER DTCS OUTPUT |
(a) Connect the Techstream to the DLC3.
(b) Turn the ignition switch to ON.
(c) Turn the Techstream on.
(d) Enter the following menus: Powertrain / Engine / Trouble Codes.
(e) Read DTCs.
Result
|
Result |
Proceed to |
|---|---|
|
DTC P219A, P219B, P219C, P219D, P219E, P219F, P21A0 and/or P21A1 is output |
A |
|
DTC P219A, P219B, P219C, P219D, P219E, P219F, P21A0 and/or P21A1 and other DTCs are output |
B |
HINT:
If any DTCs other than P219A, P219B, P219C, P219D, P219E, P219F, P21A0 and/or P21A1 are output, troubleshoot those DTCs first.
| B |
|
|
|
2. |
READ VALUE USING TECHSTREAM (FREEZE FRAME DATA) |
(a) Connect the Techstream to the DLC3.
(b) Turn the ignition switch to ON.
(c) Using the Techstream, confirm the vehicle conditions recorded in the freeze frame data which were present when the DTC was stored (See page
).
Freeze Frame Data Item for DTC P219A, P219B, P219C, P219D, P219E, P219F, P21A0 and/or P21A1:
- Vehicle Speed
- Engine Speed
- Calculate Load
- Short FT #1, #2
- Long FT #1, #2
- Cylinder #1 Misfire Count to Cylinder #6 Misfire Count
HINT:
When the sum of Short FT and Long FT is positive, the engine is running lean, and when the sum is negative, the engine is running rich.
|
Air Fuel Ratio Sensor Monitoring Method (P219A and P219B) |
Crankshaft Position Sensor Monitoring Method (P219C, P219D, P219E, P219F, P21A0 and P21A1) |
Note |
|---|---|---|
|
DTCs are 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 |
|
DTCs are 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.*1 |
|
DTCs are not output |
DTCs are output |
Malfunctioning of cylinders detected by Crankshaft Position Sensor Monitoring Method is primarily suspected. |
|
DTCs are output |
DTCs are not output |
Malfunctioning of the bank detected by Air Fuel Ratio Sensor Monitoring Method is primarily suspected |
*1: 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 level. This may result in an air fuel ratio imbalance of normal cylinders and DTCs may be stored.
|
|
3. |
READ DTC OUTPUT |
(a) Connect the Techstream to the DLC3.
(b) Turn the ignition switch to ON.
(c) Turn the Techstream on.
(d) Drive the vehicle in accordance with the driving pattern described in Confirmation Driving Pattern.
HINT:
- If any misfire count ("Cylinder #1 Misfire Count" to "Cylinder #6 Misfire Count) increases while idling or driving the vehicle, proceed to step 6.
- Perform inspections while focusing on the cylinder whose misfire count has increased.
(e) Enter the following menus: Powertrain / Engine / Trouble Codes.
(f) Read the DTCs.
Result
|
Result |
Proceed to |
|---|---|
|
P219A or P219B is output |
A |
|
DTC P219A or P219B, and P219C, P219D, P219E, P219F, P21A0 or P21A1 is output |
B |
|
DTC P219C, P219D, P219E, P219F, P21A0 and/or P21A1 is output |
| B |
|
|
|
4. |
PERFORM ACTIVE TEST USING TECHSTREAM (CONTROL THE INJECTION VOLUME) |
(a) Connect the Techstream to the DLC3.
(b) Turn the ignition switch to ON.
(c) Turn the Techstream on.
(d) Warm up the engine.
HINT:
The A/C switch and all accessory switches should be off and the shift lever should be in P or N.
(e) Enter the following menus: Powertrain / Engine / Active Test / Control the Injection Volume / Data List / Cylinder #1 to #6 Misfire Count.
HINT:
When the "Control the Injection Volume" Active Test is selected (injection volume is 0%), if a misfire count increases, proceed to step 6 (Check Intake System).
(f) Perform the Control the Injection Volume operation with the engine idling.
(g) Check the misfire counts ("Cylinder #1 Misfire Count" to "Cylinder #6 Misfire Count") while decreasing the injection volume in 5% increments.
NOTICE:
Do not decrease the injection volume by more than 20%.
The cylinder whose misfire count has not increased can be assumed to be running rich. Therefore, perform inspections while focusing on that cylinder.
|
|
5. |
CHECK FOR EXHAUST GAS LEAK |
(a) Check for exhaust gas leaks.
OK:
No exhaust gas leaks.
HINT:
Perform "Inspection After Repair" after repairing or replacing the exhaust system (See page
).
| NG |
|
REPAIR OR REPLACE EXHAUST SYSTEM |
|
|
6. |
CHECK INTAKE SYSTEM |
(a) Check the intake system for vacuum leaks (See page
).
OK:
No leaks in intake system.
HINT:
Perform "Inspection After Repair" after repairing or replacing the intake system (See page
).
| NG |
|
REPAIR OR REPLACE INTAKE SYSTEM |
|
|
7. |
INSPECT SPARK PLUG |
(a) Inspect the spark plug of the imbalanced cylinder (See page
).
HINT:
Perform "Inspection After Repair" after replacing the spark plug (See page
).
| NG |
|
|
|
8. |
CHECK FOR SPARK (SPARK TEST) |
(a) Perform a spark test (See page
).
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 (See page
).
| NG |
|
|
|
9. |
CHECK CYLINDER COMPRESSION PRESSURE |
(a) Measure the cylinder compression pressure of the misfiring cylinder (See page
).
HINT:
Perform "Inspection After Repair" after repairing or replacing the engine assembly (See page
).
| NG |
|
CHECK ENGINE TO DETERMINE CAUSE OF LOW COMPRESSION |
|
|
10. |
CHECK FUEL INJECTOR ASSEMBLY (POWER SOURCE) |
|
(a) Disconnect the fuel injector assembly connectors. |
|
(b) Turn the ignition switch to ON.
(c) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
|
Tester Connection |
Switch Condition |
Specified Condition |
|---|---|---|
|
B7-2 - Body ground |
Ignition switch ON |
11 to 14 V |
|
B8-2 - Body ground |
Ignition switch ON |
11 to 14 V |
|
B9-2 - Body ground |
Ignition switch ON |
11 to 14 V |
|
B10-2 - Body ground |
Ignition switch ON |
11 to 14 V |
|
B11-2 - Body ground |
Ignition switch ON |
11 to 14 V |
|
B12-2 - Body ground |
Ignition switch ON |
11 to 14 V |
Text in Illustration
|
*a |
Front view of wire harness connector (to Fuel Injector Assembly) |
| NG |
|
|
|
11. |
CHECK HARNESS AND CONNECTOR (FUEL INJECTOR ASSEMBLY - ECM) |
(a) Disconnect the B7, B8, B9, B10, B11 and B12 fuel injector assembly connectors.
(b) Disconnect the B1 ECM connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
B7-1 - B1-86 (#10) |
Always |
Below 1 Ω |
|
B8-1 - B1-109 (#20) |
Always |
Below 1 Ω |
|
B9-1 - B1-85 (#30) |
Always |
Below 1 Ω |
|
B10-1 - B1-108 (#40) |
Always |
Below 1 Ω |
|
B11-1 - B1-84 (#50) |
Always |
Below 1 Ω |
|
B12-1 - B1-107 (#60) |
Always |
Below 1 Ω |
|
B7-1 or B1-86 (#10) - Body ground |
Always |
10 kΩ or higher |
|
B8-1 or B1-109 (#20) - Body ground |
Always |
10 kΩ or higher |
|
B9-1 or B1-85 (#30) - Body ground |
Always |
10 kΩ or higher |
|
B10-1 or B1-108 (#40) - Body ground |
Always |
10 kΩ or higher |
|
B11-1 or B1-84 (#50) - Body ground |
Always |
10 kΩ or higher |
|
B12-1 or B1-107 (#60) - Body ground |
Always |
10 kΩ or higher |
| NG |
|
REPAIR OR REPLACE HARNESS AND CONNECTOR |
|
|
12. |
CHECK FUEL INJECTOR ASSEMBLY OF IMBALANCE CYLINDER |
(a) Check the fuel injector injection [whether fuel volume is high or low, and whether injection pattern is poor] (See page
).
HINT:
Perform "Inspection After Repair" after replacing the fuel injector assembly (See page
).
| NG |
|
|
|
13. |
CHECK FOR CAUSE OF FAILURE |
(a) If the case 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 on the intake valve, remove the cylinder head and check the intake valve.
|
|
14. |
CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED |
(a) Connect the Techstream to the DLC3.
(b) Turn the ignition switch to ON.
(c) Turn the Techstream on.
(d) Clear the DTCs.
(e) Turn the ignition switch off and wait for at least 30 seconds.
(f) Turn the ignition switch to ON.
(g) Turn the Techstream on.
(h) Drive the vehicle in accordance with the driving pattern described in Confirmation Driving Pattern.
(i) Enter the following menus: Powertrain / Engine / Trouble Codes.
(j) Check for DTCs.
DTC is not output.
| NEXT |
|
END |
|
15. |
CHANGE TO NORMAL SPARK PLUG AND CHECK SPARK OF CYLINDER CAUSING IMBALANCE |
(a) Change the installed spark plug to a spark plug that functions normally.
(b) Perform a spark test (See page).
CAUTION:
Always disconnect all injector connectors.
NOTICE:
Do not crank the engine for more than 2 seconds.
OK:
Sparks jump across electrode gap.
| OK |
|
|
|
16. |
CHANGE TO NORMAL IGNITION COIL ASSEMBLY AND CHECK SPARK OF CYLINDER CAUSING IMBALANCE |
(a) Change the ignition coil assembly to an ignition coil assembly that functions normally.
(b) Perform a spark test (See page
).
CAUTION:
Always disconnect all injector connectors.
NOTICE:
Do not crank the engine for more than 2 seconds.
OK:
Sparks jump across electrode gap.
| OK |
|
| NG |
|
|
|