RM38N0EC _51 Engine / Hybrid System _111785 M20C-FKS, M20D-FKS ENGINE CONTROL _0504416 SFI SYSTEM C

M20C-FKS, M20D-FKS ENGINE CONTROL  SFI SYSTEM  P227019  A/F (O2) Sensor Signal Biased/Stuck Lean Bank 1 Sensor 2 Circuit Current Above Threshold  P227118  A/F (O2) Sensor Signal Biased/Stuck Rich Bank 1 Sensor 2 Circuit Current Below Threshold  


DESCRIPTION

Refer to DTC P003612.

Click hereEngine / Hybrid System>M20C-FKS, M20D-FKS (ENGINE CONTROL)>SFI SYSTEM>P003612

HINT:

Although the DTC title say O2 sensor, these DTCs relate to the air fuel ratio sensor (sensor 2).


DTC No. Detection Item DTC Detection Condition Trouble Area MIL Note
P227019 A/F (O2) Sensor Signal Biased/Stuck Lean Bank 1 Sensor 2 Circuit Current Above Threshold While the fuel-cut operation is performed (during vehicle deceleration), the air fuel ratio sensor (sensor 2) current is 33.13 mA or more for 0.5 seconds or more (2 trip detection logic).
·

Open or short in air fuel ratio sensor (sensor 2) circuit

·

Air fuel ratio sensor (sensor 2)

·

Intake system

·

Gas leak from exhaust system

·

Fuel pressure (for high pressure side)

·

Fuel pressure (for low pressure side)

·

Port fuel injector assembly

·

Direct fuel injector assembly

·

Fuel system

·

EGR valve assembly

·

ECM


Comes on SAE Code: P2270
P227118 A/F (O2) Sensor Signal Biased/Stuck Rich Bank 1 Sensor 2 Circuit Current Below Threshold While the fuel-cut operation is performed (during vehicle deceleration), the air fuel ratio sensor (sensor 2) current is less than 7.5 mA for 0.5 seconds or more (2 trip detection logic).
·

Open or short in air fuel ratio sensor (sensor 2) circuit

·

Air fuel ratio sensor (sensor 2)

·

Intake system

·

Gas leak from exhaust system

·

Fuel pressure (for high pressure side)

·

Fuel pressure (for low pressure side)

·

Port fuel injector assembly

·

Direct fuel injector assembly

·

Fuel system

·

EGR valve assembly

·

ECM


Comes on SAE Code: P2271

HINT:
·

When any of these DTCs are stored, check the air fuel ratio sensor (sensor 2) current output by entering the following menus on the GTS: Powertrain / Engine / Data List / A/F (O2) Sensor Current B1S2.

·

Short-term fuel trim values can also be read using the GTS.

·

If an air fuel ratio sensor (sensor 2) malfunction is detected, the ECM will store a DTC.



MONITOR DESCRIPTION

A rich air fuel mixture causes a low air fuel ratio sensor (sensor 2) current, and a lean air fuel mixture causes a high air fuel ratio sensor (sensor 2) current. Therefore, the sensor output becomes low during acceleration, and it becomes high during deceleration with the throttle valve fully closed. The ECM monitors the air fuel ratio sensor (sensor 2) current during fuel-cut and detects any abnormal current values.

If the air fuel ratio sensor (sensor 2) output is 33.13 mA or more for 0.5 seconds or more of cumulative time, the ECM interprets this as a malfunction of the air fuel ratio sensor (sensor 2) and stores DTC P227019 (stuck on high side). If the air fuel ratio sensor (sensor 2) output is less than 7.5 mA for 0.5 seconds or more of cumulative time, the ECM stores DTC P227118 (stuck on low side).


A392746E01
1.51,0.979 2.74,1.177 1.229,0.198 10 false Fuel-cut 2.604,0.906 3.833,1.104 1.229,0.198 10 false ON 2.604,1.177 3.833,1.375 1.229,0.198 10 false OFF 0.917,2.052 2.906,2.375 1.99,0.323 10 false Air Fuel Ratio Sensor (Sensor 2) Current (mA) 5.448,4.25 6.042,4.521 0.594,0.271 10 false Time 1.521,2.781 2.865,3.021 1.344,0.24 10 false High Side Threshold 1.542,3.448 2.885,3.688 1.344,0.24 10 false Low Side Threshold

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 hereEngine / Hybrid System>M20C-FKS, M20D-FKS (ENGINE CONTROL)>SFI SYSTEM>DTC CHECK / CLEAR

·

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

Click hereEngine / Hybrid System>M20C-FKS, M20D-FKS (ENGINE CONTROL)>SFI SYSTEM>DTC CHECK / CLEAR



A403645
0.292,0.563 2.281,0.76 1.99,0.198 10 false Vehicle Speed 0.615,1.208 2.604,1.406 1.99,0.198 10 false 75 km/h 0.813,2.208 2.802,2.406 1.99,0.198 10 false Idling 0.229,2.479 1.135,2.823 0.906,0.344 10 false Ignition Switch Off 1.75,2.146 2.052,2.375 0.302,0.229 10 false [A] 3.031,1.073 3.333,1.302 0.302,0.229 10 false [B]* 4.188,1.073 4.49,1.302 0.302,0.229 10 false [C] 5.177,1.073 5.479,1.302 0.302,0.229 10 false [C] 6.167,1.073 6.469,1.302 0.302,0.229 10 false [C] 6.677,3.188 6.979,3.417 0.302,0.229 10 false [D] 1.49,2.76 3.479,2.958 1.99,0.198 10 false Warming up 2.563,2.771 4.552,2.969 1.99,0.198 10 false 10 minutes or more 0.104,3.365 4.75,3.646 4.646,0.281 10 false *: Drive the vehicle while keeping the engine load as constant as possible

1.

Connect the GTS to the DLC3.

2.

Turn the ignition switch to ON.

3.

Turn the GTS on.

4.

Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).

5.

Turn the ignition switch off and wait for at least 30 seconds.

6.

Turn the ignition switch to ON.

7.

Turn the GTS on.

8.

Start the engine and warm it up until the engine coolant temperature is 75°C (167°F) or higher with the shift lever in P [A].

HINT:

In order to keep the idle stable, turn off the A/C and all other electric loads and do not perform any shift operations.


9.

Drive the vehicle at approximately 75 km/h (46 mph) for 10 minutes or more [B].

CAUTION:

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


HINT:

Drive the vehicle while keeping the engine load as constant as possible.


10.

With the shift lever in M or 2nd gear, drive the vehicle at 75 km/h (46 mph), and then decelerate the vehicle by releasing the accelerator pedal for 10 seconds or more to perform the fuel-cut [C].

CAUTION:

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


11.

Repeat step [C] 2 times or more in one driving cycle.

12.

Enter the following menus: Powertrain / Engine / Trouble Codes / Pending [D].

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.



14.

Enter the following menus: Powertrain / Engine / Utility / All Readiness.

15.

Input the DTC: P227019 or P227118.

16.

Check the DTC judgment result.

GTS 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, drive the vehicle with the shift lever in M or 2nd gear, and then perform step [C] again.

·

[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 battery terminal or attempt to clear the DTCs during this procedure, as doing so will clear the universal trip and normal judgment histories.




CAUTION / NOTICE / HINT

NOTICE:

Inspect the fuses for circuits related to this system before performing the following procedure.


HINT:
·

Sensor 1 refers to the sensor closest to the engine assembly.

·

Sensor 2 refers to the sensor farthest away from the engine assembly.

·

Read Freeze Frame Data using the GTS. 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 (IN ADDITION TO P227019 OR P227118)
a.

Read the DTCs.

Powertrain > Engine > Trouble Codes
50001 372
Result:
Result Proceed to
DTC P227019 or P227118 is output A
DTC P227019 or P227118 and P00D562 are output
DTC P227019 or P227118 and P013A7C are output
DTC P227019 or P227118 and other DTCs are output B


HINT:

If any DTCs other than P227019 or P227118 are output, troubleshoot those DTCs first.




A

2.CONFIRM IF VEHICLE HAS RUN OUT OF FUEL IN PAST

B

GO TO DTC CHART

2.CONFIRM IF VEHICLE HAS RUN OUT OF FUEL IN PAST
a.

Has the vehicle run out of fuel in the past?


Result:
Proceed to
YES
NO



YES

3.CLEAR DTC

NO

5.CLEAR DTC
3.CLEAR DTC
a.

Clear the DTCs.

Powertrain > Engine > Clear DTCs
50002 372

b.

Turn the ignition switch off and wait for at least 30 seconds.


Result:
Proceed to
NEXT



NEXT

4.CHECK WHETHER DTC OUTPUT RECURS (DTC P227019 OR P227118)
4.CHECK WHETHER DTC OUTPUT RECURS (DTC P227019 OR P227118)
a.

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


b.

Check the DTC judgment result.

Powertrain > Engine > Utility
Tester Display
All Readiness
50005 372 20

c.

Input the DTC: P227019 or P227118.

Result:
Result Proceed to
NORMAL
(DTCs are not output) 		A
ABNORMAL
(DTC P227019 or P227118 is output) 		B




A

DTC CAUSED BY RUNNING OUT OF FUEL

B

5.CLEAR DTC
5.CLEAR DTC
a.

Clear the DTCs.

Powertrain > Engine > Clear DTCs
50002 372

b.

Turn the ignition switch off and wait for at least 30 seconds.


Result:
Proceed to
NEXT



NEXT

6.READ VALUE USING GTS (TEST VALUE OF AIR FUEL RATIO SENSOR (SENSOR 2))
6.READ VALUE USING GTS (TEST VALUE OF AIR FUEL RATIO SENSOR (SENSOR 2))
a.

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

Powertrain > Engine > Monitor
50010 372

b.

Check that the status of O2 Sensor is Complete. If the status is still Incomplete, drive the vehicle according to the driving pattern again.

Powertrain > Engine > Monitor
50010 372

c.

Check the test value of the air fuel ratio sensor (sensor 2) output current during fuel-cut.

Result:
Test Value Proceed to
Within normal range (7.5 mA or more, and less than 33.13 mA) A
Outside normal range (Less than 7.5 mA, or 33.13 mA or more) B




A

7.PERFORM ACTIVE TEST USING GTS (CONTROL THE INJECTION VOLUME FOR A/F SENSOR)

B

19.REPLACE AIR FUEL RATIO SENSOR (SENSOR 2)
7.PERFORM ACTIVE TEST USING GTS (CONTROL THE INJECTION VOLUME FOR A/F SENSOR)
a.

Start the engine and warm it up until the engine coolant temperature reaches 80°C (176°F) or higher.

Powertrain > Engine > Data List
Tester Display
Coolant Temperature
50003 372 205

b.

Warm up the air fuel ratio sensors at an engine speed of 2500 rpm for 90 seconds.

Powertrain > Engine > Data List
Tester Display
Engine Speed
50003 372 211

c.

Perform the Control the Injection Volume for A/F Sensor operation with the engine idling.

Powertrain > Engine > Active Test
Active Test Display
Control the Injection Volume for A/F Sensor
Data List Display
A/F (O2) Sensor Current B1S1
A/F (O2) Sensor Current B1S2
50004 372 8 230,564

d.

Monitor the output values of the air fuel ratio sensor (sensor 1) and air fuel ratio sensor (sensor 2) (A/F (O2) Sensor Current B1S1 and A/F (O2) Sensor Current B1S2) displayed on the GTS.

HINT:
·

The Control the Injection Volume for A/F Sensor operation lowers the fuel injection volume by 12.5% or increases the injection volume by 12.5%.

·

The air fuel ratio sensor (sensor 1) has an output delay of a few seconds and the air fuel ratio sensor (sensor 2) has a maximum output delay of approximately 20 seconds.

·

If the sensor output value does not change (almost no reaction) while performing the Active Test, the sensor may be malfunctioning.



Standard
GTS Display (Sensor) Injection Volume Status Current
A/F (O2) Sensor Current B1S1
(Air fuel ratio (sensor 1)) 		12.5% Rich Below -0.075 mA
-12.5% Lean More than 0.037 mA
A/F (O2) Sensor Current B1S2
(Air fuel ratio (sensor 2)) 		12.5% Rich Below -0.86 mA
-12.5% Lean More than 0.33 mA

Result:
Status of A/F (O2) Sensor Current B1S1 Status of A/F (O2) Sensor Current B1S2 Air Fuel Ratio Condition and Air Fuel Ratio Sensor (Sensor 2) Condition Proceed to
Lean Lean Actual air fuel ratio lean A
Rich Rich Actual air fuel ratio rich
Lean/Rich Lean Air fuel ratio sensor (sensor 2) malfunction B
Lean/Rich Rich Air fuel ratio sensor (sensor 2) malfunction
Lean/Rich Lean/Rich Normal


Lean: During the Control the Injection Volume for A/F Sensor Active Test, the air fuel ratio sensor (sensor 1) output current (A/F (O2) Sensor Current B1S1) is consistently more than 0.037 mA, and the air fuel ratio sensor (sensor 2) output current (A/F (O2) Sensor Current B1S2) is consistently more than 0.33 mA.

Rich: During the Control the Injection Volume for A/F Sensor Active Test, the air fuel ratio sensor (sensor 1) output current (A/F (O2) Sensor Current B1S1) is consistently below -0.075 mA, and the air fuel ratio sensor (sensor 2) output current (A/F (O2) Sensor Current B1S2) is consistently below -0.86 mA.

Lean/Rich: During the Control the Injection Volume for A/F Sensor Active Test, the output current of the air fuel ratio sensor (sensor 1) or air fuel ratio sensor (sensor 2) alternate correctly.


HINT:

Refer to "Data List / Active Test" [A/F (O2) Sensor Current B1S1, A/F (O2) Sensor Current B1S2].

Click hereEngine / Hybrid System>M20C-FKS, M20D-FKS (ENGINE CONTROL)>SFI SYSTEM>DATA LIST / ACTIVE TEST




A

8.CHECK INTAKE SYSTEM

B

19.REPLACE AIR FUEL RATIO SENSOR (SENSOR 2)
8.CHECK INTAKE SYSTEM
a.

Check the intake system for vacuum leaks.

Click hereEngine / Hybrid System>M20C-FKS, M20D-FKS (INTAKE / EXHAUST)>INTAKE SYSTEM>ON-VEHICLE INSPECTION

OK:

No leaks in the intake system.


HINT:

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

Click hereEngine / Hybrid System>M20C-FKS, M20D-FKS (ENGINE CONTROL)>SFI SYSTEM>INITIALIZATION



Result:
Proceed to
OK
NG



OK

9.CHECK FOR EXHAUST GAS LEAK

NG

REPAIR OR REPLACE INTAKE SYSTEM

9.CHECK FOR EXHAUST GAS LEAK
OK:

No gas leaks in exhaust system.


HINT:

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

Click hereEngine / Hybrid System>M20C-FKS, M20D-FKS (ENGINE CONTROL)>SFI SYSTEM>INITIALIZATION


Result:
Proceed to
OK
NG



OK

10.PERFORM ACTIVE TEST USING GTS (CONTROL THE EGR STEP POSITION)

NG

REPAIR OR REPLACE EXHAUST SYSTEM

10.PERFORM ACTIVE TEST USING GTS (CONTROL THE EGR STEP POSITION)
a.

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.


Powertrain > Engine > Data List
Tester Display
Coolant Temperature
50003 372 205

b.

Check the engine idling condition and Intake Manifold Absolute Pressure values in the Data List while performing the Active Test.

Powertrain > Engine > Active Test
Active Test Display
Control the EGR Step Position
Data List Display
Engine Speed
Intake Manifold Absolute Pressure
50004 372 25 211,385
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 and Engine Speed change in response to EGR step position.


Standard:
- Control the EGR Step Position (Active Test)
0 Steps 0 to 30 Steps
Idling condition Steady idling Idling changes from steady to rough idling or engine stalls
Intake Manifold Absolute Pressure
(Data List) 		Intake Manifold Absolute Pressure value is 18 to 38 kPa(abs) (2.6 to 5.5 psi(abs))
(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:

During Active Test, if the idling condition does not change in response to EGR step position, then there is probably a malfunction in the EGR valve.



Result:
Proceed to
OK
NG



OK

12.CHECK FUEL PRESSURE (FOR LOW PRESSURE SIDE)

NG

11.INSPECT EGR VALVE ASSEMBLY
12.CHECK FUEL PRESSURE (FOR LOW PRESSURE SIDE)

Click hereEngine / Hybrid System>M20C-FKS, M20D-FKS (FUEL)>FUEL SYSTEM>ON-VEHICLE INSPECTION

Result:
Proceed to
OK
NG



OK

13.INSPECT DIRECT FUEL INJECTOR ASSEMBLY

NG

22.CHECK FUEL LINE
13.INSPECT DIRECT FUEL INJECTOR ASSEMBLY
a.

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

Click hereEngine / Hybrid System>M20C-FKS, M20D-FKS (FUEL)>FUEL INJECTOR (for Port Injection)>INSPECTION

HINT:

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

Click hereEngine / Hybrid System>M20C-FKS, M20D-FKS (ENGINE CONTROL)>SFI SYSTEM>INITIALIZATION



Result:
Proceed to
OK
NG



OK

14.READ VALUE USING GTS (FUEL PRESSURE (HIGH))

NG

REPLACE PORT FUEL INJECTOR ASSEMBLY

Click hereEngine / Hybrid System>M20C-FKS, M20D-FKS (FUEL)>FUEL INJECTOR (for Port Injection)>REMOVAL


14.READ VALUE USING GTS (FUEL PRESSURE (HIGH))
a.

Start the engine and warm it up until the engine coolant temperature is 75°C (167°F) or higher with all the accessories switched off.

Powertrain > Engine > Data List
Tester Display
Coolant Temperature
50003 372 205

b.

According to the display on the GTS, read the Data List.

Powertrain > Engine > Data List
Tester Display
Engine Speed
Fuel Pressure (High)
Injection Mode
50003 372 211,265,294
Standard:
GTS Display Condition Specified Condition
Fuel Pressure (High)
·

Shift position: P

·

A/C: Off

·

Engine warmed up

·

Engine Speed: 3000 rpm

·

Injection Mode: Direct


2400 to 20000 kPag



Result:
Proceed to
OK
NG



OK

15.INSPECT DIRECT FUEL INJECTOR ASSEMBLY

NG

REPAIR OR REPLACE FUEL SYSTEM (FOR HIGH PRESSURE SIDE)

17.CLEAR DTC
a.

Clear the DTCs.

Powertrain > Engine > Clear DTCs
50002 372

b.

Turn the ignition switch off and wait for at least 30 seconds.


Result:
Proceed to
NEXT



NEXT

18.CHECK WHETHER DTC OUTPUT RECURS (DTC P227019 OR P227118)
18.CHECK WHETHER DTC OUTPUT RECURS (DTC P227019 OR P227118)
a.

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


b.

Input the DTC: P227019 or P227118.

Powertrain > Engine > Utility
Tester Display
All Readiness
50005 372 20

c.

Check the DTC judgment result.

Result:
Result Proceed to
NORMAL
(DTCs are not output) 		A
ABNORMAL
(DTC P227019 or P227118 is output) 		B




A

END

B

REPLACE ECM

Click hereEngine / Hybrid System>M20C-FKS, M20D-FKS (ENGINE CONTROL)>ECM>REMOVAL


20.CLEAR DTC
a.

Clear the DTCs.

Powertrain > Engine > Clear DTCs
50002 372

b.

Turn the ignition switch off and wait for at least 30 seconds.


Result:
Proceed to
NEXT



NEXT

21.CHECK WHETHER DTC OUTPUT RECURS (DTC P227019 OR P227118)
21.CHECK WHETHER DTC OUTPUT RECURS (DTC P227019 OR P227118)
a.

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


b.

Input the DTC: P227019 or P227118.

Powertrain > Engine > Utility
Tester Display
All Readiness
50005 372 20

c.

Check the DTC judgment result.

Result:
Result Proceed to
NORMAL
(DTCs are not output) 		A
ABNORMAL
(DTC P227019 or P227118 is output) 		B




A

END

B

REPLACE ECM

Click hereEngine / Hybrid System>M20C-FKS, M20D-FKS (ENGINE CONTROL)>ECM>REMOVAL


22.CHECK FUEL LINE
a.

Check the fuel lines for leaks or blockage.

HINT:

Perform "Inspection After Repair" after replacing the fuel pump (for low pressure side).

Click hereEngine / Hybrid System>M20C-FKS, M20D-FKS (ENGINE CONTROL)>SFI SYSTEM>INITIALIZATION



Result:
Proceed to
OK
NG



OK

GO TO FUEL PUMP CONTROL CIRCUIT

Click hereEngine / Hybrid System>M20C-FKS, M20D-FKS (ENGINE CONTROL)>SFI SYSTEM>Fuel Pump Control Circuit


NG

REPAIR OR REPLACE FUEL SYSTEM