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

M20C-FKS, M20D-FKS ENGINE CONTROL SFI SYSTEM P017100 System Too Lean Bank 1 P017200 System Too Rich Bank 1 P117000 Fuel Performance/Port Injector P117B00 Fuel Performance/Direct Injector

DESCRIPTION

The fuel trim is related to the feedback compensation value, not to the basic injection duration. The fuel trim consists of both the short-term and long-term fuel trims.

The short-term fuel trim is fuel compensation that is used to constantly maintain the air fuel ratio at stoichiometric levels. The signal from the air fuel ratio sensor (sensor 1) indicates whether the air fuel ratio is rich or lean compared to the stoichiometric ratio. This triggers a reduction in the fuel injection volume if the air fuel ratio is rich and an increase in the fuel injection volume if lean.

Factors such as individual engine differences, wear over time and changes in operating environment cause short-term fuel trim to vary from the central value. The long-term fuel trim, which controls overall fuel compensation, compensates for long-term deviations in the fuel trim from the central value caused by the short-term fuel trim compensation.

DTC No.	Detection Item	DTC Detection Condition	Trouble Area	MIL	Note
P017100	System Too Lean Bank 1	With a warm engine and stable air fuel ratio feedback, the fuel trim is considerably in error to the lean side (2 trip detection logic).	· Intake system · Port fuel injector assembly · Direct fuel injector assembly · Mass air flow meter sub-assembly · Engine coolant temperature sensor · Fuel pressure · Fuel pressure sensor (for high pressure side) · Gas leak from exhaust system · Open or short in air fuel ratio sensor (sensor 1) circuit · Air fuel ratio sensor (sensor 1) · PCV valve and hose · PCV hose connections · EGR valve assembly · Wire harness or connector · ECM	Comes on	SAE Code: P0171
P017200	System Too Rich Bank 1	With a warm engine and stable air fuel ratio feedback, the fuel trim is considerably in error to the rich side (2 trip detection logic).	· Port fuel injector assembly · Direct fuel injector assembly · Mass air flow meter sub-assembly · Engine coolant temperature sensor · Ignition system · Fuel pressure · Fuel pressure sensor (for high pressure side) · Gas leak from exhaust system · Open or short in air fuel ratio sensor (sensor 1) circuit · Air fuel ratio sensor (sensor 1) · EGR valve assembly · Wire harness or connector · ECM	Comes on	SAE Code: P0172
P117000	Fuel Performance/Port Injector	Although a DTC is stored for a rich or lean condition, the amount of fuel trim during direct injection is normal (1 trip detection logic)	· Port fuel injector assembly · Direct fuel injector assembly · Fuel pressure · ECM	Does not come on	SAE Code: P1170
P117B00	Fuel Performance/Direct Injector	Although a DTC is stored for a rich or lean condition, the amount of fuel trim during port injection is normal (1 trip detection logic)	· Port fuel injector assembly · Direct fuel injector assembly · Fuel pressure · ECM	Does not come on	SAE Code: P117B

HINT:: ·

When DTC P017100 is stored, the actual air fuel ratio is on the lean side. When DTC P017200 is stored, the actual air fuel ratio is on the rich side.

·

If the vehicle runs out of fuel, the air fuel ratio is lean and DTC P017100 may be stored. The MIL is then illuminated.

·

When DTC P117000 or P117B00 is output, it may not be possible to precisely determine whether the port injection or the direct injection is malfunctioning, depending on the conditions. In this case, perform an Active Test (Control the Injection Mode) to determine which injection system is malfunctioning.

MONITOR DESCRIPTION

Under closed loop fuel control, fuel injection volumes that deviate from those estimated by the ECM cause changes in the long-term fuel trim compensation value. The long-term fuel trim is adjusted when there are persistent deviations in the short-term fuel trim values. Deviations from the fuel injection volumes estimated by the ECM also affect the average fuel trim learned value, which is a combination of the average short-term fuel trim (fuel feedback compensation value) and the average long-term fuel trim (learned value of the air fuel ratio). If the average fuel trim learned value exceeds the malfunction thresholds, the ECM interprets this as a malfunction of the fuel system and stores a DTC.

Example:

The average fuel trim learned value is +53% or higher, or -35% or less, the ECM interprets this as a fuel system malfunction.

2.292,1.958 2.646,1.958 false 2.292,3.073 2.646,3.073 false 1.5,1.667 1.583,1.667 1.583,1.667 1.833,1.917 false 1.5,3.333 1.583,3.333 1.583,3.333 1.833,3.083 false 2.26,0.385 3.479,0.771 1.219,0.385 10 false Fuel Compensation Amount 1.917,1.865 2.531,2.063 0.615,0.198 10 false 1.53 1.917,3.01 2.323,3.229 0.406,0.219 10 false 0.65 1.979,2.438 2.594,2.635 0.615,0.198 10 false 1.0 0.125,1.146 0.896,1.344 0.771,0.198 10 false P017100 0.292,1.531 1.458,2.104 1.167,0.573 10 false +53%: Malfunction Threshold of Lean Condition 0.125,2.875 0.896,3.073 0.771,0.198 10 false P017200 0.292,3.198 1.458,3.771 1.167,0.573 10 false -35%: Malfunction Threshold of Rich Condition

CONFIRMATION DRIVING PATTERN

HINT:: ·

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 / CLEAR202303,999999,_51,_111785,_0504416,RM1000000029K26,

·

Permanent misfire and fuel system DTCs can only be cleared when performing the universal trip driving pattern when no malfunction is detected.

2.802,2.073 3.25,0.271 3.25,0.271 3.5,0.271 false 0.677,0.052 1.729,0.302 1.052,0.25 10 false Vehicle Speed 1.083,0.365 1.698,0.563 0.615,0.198 10 false 100 km/h 1.146,1.229 1.76,1.427 0.615,0.198 10 false 60 km/h 1.333,1.979 1.948,2.177 0.615,0.198 10 false Idling 0.521,2.24 1.688,2.5 1.167,0.26 10 false Ignition Switch ON 2.031,2.344 2.646,2.542 0.615,0.198 10 false [A] 3.573,0.219 6.531,0.469 2.958,0.25 10 false Engine coolant temperatures is 75°C or higher 3.281,1.896 3.896,2.094 0.615,0.198 10 false [C] 2.521,1.896 3.135,2.094 0.615,0.198 10 false [B] 4.865,0.479 5.479,0.677 0.615,0.198 10 false [D] 2.115,3.083 3.344,3.26 1.229,0.177 10 false Warming up 2.979,3.083 4.208,3.26 1.229,0.177 10 false 2 minutes or more 5.604,3.365 6.573,3.552 0.969,0.188 10 false [E] 4.323,3.094 5.552,3.271 1.229,0.177 10 false 5 minutes or more

Connect the GTS to the DLC3.

Turn the ignition switch to ON.

Turn the GTS on.

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

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

Turn the ignition switch to ON [A].

Turn the GTS on.

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

With the engine warmed up, idle the engine for 2 minutes or more [C].

10.

Drive the vehicle at a speed between 60 and 100 km/h (37 and 62 mph) for 5 minutes or more [D].

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

11.

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

12.

Read the pending DTCs.

HINT:: ·

If a pending DTC is output, the system is malfunctioning.

·

If no pending DTC is output, the system is normal.

WIRING DIAGRAM

Refer to DTC P010012 for the mass air flow meter sub-assembly circuit.

Click hereEngine / Hybrid System>M20C-FKS, M20D-FKS (ENGINE CONTROL)>SFI SYSTEM>P010012202303,999999,_51,_111785,_0504416,RM1000000029IGL_07,P010012

Refer to DTC P003012 for the air fuel ratio sensor (sensor 1) circuit.

Click hereEngine / Hybrid System>M20C-FKS, M20D-FKS (ENGINE CONTROL)>SFI SYSTEM>P003012202303,999999,_51,_111785,_0504416,RM1000000029K30_07,P003012

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.

·

A low air fuel ratio sensor (sensor 1) voltage could be caused by a rich air fuel mixture. Check for conditions that would cause the engine to run rich.

·

A high air fuel ratio sensor (sensor 1) voltage could be caused by a lean air fuel mixture. Check for conditions that would cause the engine to run lean.

·

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 DTC P017100, P017200, P117000 AND/OR P117B00)

Read the DTCs.

Powertrain > Engine > Trouble Codes: 50001 372

Result:

Result	Proceed to
DTC P017100, P017200, P117000 and/or P117B00 is output	A
DTC P017100, P017200, P117000 and/or P117B00 and other DTCs are output	B

HINT:: If any DTCs other than P017100, P017200, P117000 and/or P117B00 are output, troubleshoot those DTCs first.

2.PERFORM ACTIVE TEST USING GTS (CONTROL THE INJECTION MODE)

GO TO DTC CHART

2.PERFORM ACTIVE TEST USING GTS (CONTROL THE INJECTION MODE)

Start the engine and warm it up until the engine coolant temperature is 80°C (176°F) or higher with all the accessories switched off.

Powertrain > Engine > Data List

Tester Display
Coolant Temperature

50003 372 205

According to the display on the GTS, read the Data List with the Active Test "Control the Injection Mode" set to Port.

Powertrain > Engine > Active Test

Active Test Display
Control the Injection Mode

Data List Display
Injection Mode
Short FT B1S1
Long FT B1S1

50004 372 42004 294,207,209

OK:

GTS Display	Specified Condition
Total of Short FT B1S1 and Long FT B1S1	Between -20 and 20%

According to the display on the GTS, read the Data List with the Active Test "Control the Injection Mode" set to Direct.

OK:

GTS Display	Specified Condition
Total of Short FT B1S1 and Long FT B1S1	Between -20 and 20%

Result:

Item		Proceed to
Port	Direct	Proceed to
OK	OK	A
OK	NG	B
NG	OK	C
NG	NG	D

3.CHECK IF VEHICLE HAS RUN OUT OF FUEL IN PAST

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

11.INSPECT PORT FUEL INJECTOR ASSEMBLY

12.CHECK PCV VALVE AND HOSE CONNECTIONS

3.CHECK IF VEHICLE HAS RUN OUT OF FUEL IN PAST

Has the vehicle run out of fuel in the past?

Result:

Proceed to
YES
NO

YES

DTC CAUSED BY RUNNING OUT OF FUEL

CHECK FOR INTERMITTENT PROBLEMS

Click hereEngine / Hybrid System>M20C-FKS, M20D-FKS (ENGINE CONTROL)>SFI SYSTEM>CHECK FOR INTERMITTENT PROBLEMS202111,999999,_51,_111785,_0504416,RM100000001ZNYV,

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

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

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

5.PERFORM ACTIVE TEST USING GTS (CONTROL THE INJECTION MODE (DIRECT))

7.CHECK MISFIRE COUNT OF DIRECT INJECTION

5.PERFORM ACTIVE TEST USING GTS (CONTROL THE INJECTION MODE (DIRECT))

Start the engine and warm it up until the engine coolant temperature is 80°C (176°F) or higher with all the accessories switched off.

Powertrain > Engine > Data List

Tester Display
Coolant Temperature

50003 372 205

According to the display on the GTS, read the Data List with the Active Test "Control the Injection Mode" set to Direct.

Powertrain > Engine > Active Test

Active Test Display
Control the Injection Mode

Data List Display
High Pressure Fuel Pump Duty Ratio (D4)
Injection Mode
Short FT B1S1
Long FT B1S1

50004 372 42004 46,294,207,209

HINT:: The A/C switch and all accessory switches should be off, and the shift lever should be in P, and the engine should be fully warmed up.

Result:

Item			Proceed to
Injection Mode	High Pressure Fuel Pump Duty Ratio (D4)	Total of Short FT B1S1 and Long FT B1S1	Proceed to
Direct	10% to 50%	-	A
	50% or higher	-20% or less	B
	10% or less	+20% or higher	B
	50% or higher	+20% or higher	C
	10% or less	-20% or less	D

HINT:: Perform "Inspection After Repair" after replacing the fuel pressure sensor (for high pressure side).; Click hereEngine / Hybrid System>M20C-FKS, M20D-FKS (ENGINE CONTROL)>SFI SYSTEM>INITIALIZATION202303,999999,_51,_111785,_0504416,RM1000000029BFF,

6.PERFORM ACTIVE TEST USING GTS (CONTROL THE INJECTION MODE (DIRECT))

REPLACE FUEL PRESSURE SENSOR (FOR HIGH PRESSURE SIDE)

Click hereEngine / Hybrid System>M20C-FKS, M20D-FKS (FUEL)>FUEL PRESSURE SENSOR (for High Pressure)>REMOVAL202303,999999,_51,_111793,_0504180,RM100000002AMOI,

8.REPLACE FUEL (ENGINE ROOM SIDE) PUMP ASSEMBLY (FOR HIGH PRESSURE SIDE)

REPLACE ECM

Click hereEngine / Hybrid System>M20C-FKS, M20D-FKS (ENGINE CONTROL)>ECM>REMOVAL202303,999999,_51,_111785,_0503271,RM1000000029P3U,

6.PERFORM ACTIVE TEST USING GTS (CONTROL THE INJECTION MODE (DIRECT))

Start the engine and warm it up until the engine coolant temperature is 80°C (176°F) or higher with all the accessories switched off.

Powertrain > Engine > Data List

Tester Display
Coolant Temperature

50003 372 205

According to the display on the GTS, read the Data List with the Active Test "Control the Injection Mode" set to Direct.

Powertrain > Engine > Active Test

Active Test Display
Control the Injection Mode

Data List Display
High Pressure Fuel Pump Duty Ratio (D4)
Injection Mode
Short FT B1S1
Long FT B1S1

50004 372 42004 46,294,207,209

HINT:: The A/C switch and all accessory switches should be off, and the shift lever should be in P, and the engine should be fully warmed up.

Result:

Item			Proceed to
Injection Mode	High Pressure Fuel Pump Duty Ratio (D4)	Total of Short FT B1S1 and Long FT B1S1	Proceed to
Direct	10 to 50%	-25% or less	A
	10 to 50%	+25% or higher	A
	10 to 50%	-25 to +25%	B

HINT:: Perform "Inspection After Repair" after replacing the direct fuel injector assembly.; Click hereEngine / Hybrid System>M20C-FKS, M20D-FKS (ENGINE CONTROL)>SFI SYSTEM>INITIALIZATION202303,999999,_51,_111785,_0504416,RM1000000029BFF,

REPLACE DIRECT FUEL INJECTOR ASSEMBLY

Click hereEngine / Hybrid System>M20C-FKS, M20D-FKS (FUEL)>FUEL INJECTOR (for Direct Injection)>REMOVAL202203,999999,_51,_111793,_0504176,RM1000000022KBX,

CHECK FOR INTERMITTENT PROBLEMS

Click hereEngine / Hybrid System>M20C-FKS, M20D-FKS (ENGINE CONTROL)>SFI SYSTEM>CHECK FOR INTERMITTENT PROBLEMS202111,999999,_51,_111785,_0504416,RM100000001ZNYV,

7.CHECK MISFIRE COUNT OF DIRECT INJECTION

Start the engine and warm it up until the engine coolant temperature is 80°C (176°F) or higher with all the accessories switched off.

Powertrain > Engine > Data List

Tester Display
Coolant Temperature

50003 372 205

According to the display on the GTS, read the Data List with the Active Test "Control the Injection Mode" set to Direct.

Powertrain > Engine > Active Test

Active Test Display
Control the Injection Mode

Data List Display
Injection Mode
Misfire Count Cylinder #1
Misfire Count Cylinder #2
Misfire Count Cylinder #3
Misfire Count Cylinder #4

50004 372 42004 294,148,149,150,151

HINT:: The A/C switch and all accessory switches should be off, and the shift lever should be in P, and the engine should be fully warmed up.

Result:

Injection Mode	Misfire Count	Proceed to
Direct	No misfire counts, or misfire counts occur randomly in all cylinders	A
Direct	Misfire counts occur in particular cylinder	B

HINT:: Perform "Inspection After Repair" after replacing the direct fuel injector assembly.; Click hereEngine / Hybrid System>M20C-FKS, M20D-FKS (ENGINE CONTROL)>SFI SYSTEM>INITIALIZATION202303,999999,_51,_111785,_0504416,RM1000000029BFF,

8.REPLACE FUEL (ENGINE ROOM SIDE) PUMP ASSEMBLY (FOR HIGH PRESSURE SIDE)

REPLACE DIRECT FUEL INJECTOR ASSEMBLY

Click hereEngine / Hybrid System>M20C-FKS, M20D-FKS (FUEL)>FUEL INJECTOR (for Direct Injection)>REMOVAL202203,999999,_51,_111793,_0504176,RM1000000022KBX,

8.REPLACE FUEL (ENGINE ROOM SIDE) PUMP ASSEMBLY (FOR HIGH PRESSURE SIDE)

Click hereEngine / Hybrid System>M20C-FKS, M20D-FKS (FUEL)>FUEL PUMP (for High Pressure)>REMOVAL202303,999999,_51,_111793,_0504182,RM100000002AK25,

HINT:: Perform "Inspection After Repair" after replacing the fuel pump assembly (for high pressure side).; Click hereEngine / Hybrid System>M20C-FKS, M20D-FKS (ENGINE CONTROL)>SFI SYSTEM>INITIALIZATION202303,999999,_51,_111785,_0504416,RM1000000029BFF,

Result:

Proceed to
NEXT

9.CLEAR DTC

Clear the DTCs.

Powertrain > Engine > Clear DTCs: 50002 372

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

Result:

Proceed to
NEXT

10.CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED

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

Read the DTCs.

Powertrain > Engine > Trouble Codes: 50001 372

Result:

Result	Proceed to
DTCs are not output	A
DTC P017100, P017200, P117000 and/or P117B00 are output	B

END

REPLACE ECM

Click hereEngine / Hybrid System>M20C-FKS, M20D-FKS (ENGINE CONTROL)>ECM>REMOVAL202303,999999,_51,_111785,_0503271,RM1000000029P3U,

11.INSPECT PORT FUEL INJECTOR ASSEMBLY

Click hereEngine / Hybrid System>M20C-FKS, M20D-FKS (FUEL)>FUEL INJECTOR (for Port Injection)>INSPECTION202111,999999,_51,_111793,_0504175,RM100000001ZHDG,

HINT:: Perform "Inspection After Repair" after replacing the port fuel injector assembly.; Click hereEngine / Hybrid System>M20C-FKS, M20D-FKS (ENGINE CONTROL)>SFI SYSTEM>INITIALIZATION202303,999999,_51,_111785,_0504416,RM1000000029BFF,

Result:

Proceed to
OK
NG

REPLACE ECM

Click hereEngine / Hybrid System>M20C-FKS, M20D-FKS (ENGINE CONTROL)>ECM>REMOVAL202303,999999,_51,_111785,_0503271,RM1000000029P3U,

REPLACE PORT FUEL INJECTOR ASSEMBLY

Click hereEngine / Hybrid System>M20C-FKS, M20D-FKS (FUEL)>FUEL INJECTOR (for Port Injection)>REMOVAL202203,999999,_51,_111793,_0504175,RM1000000022KBW,

12.CHECK PCV VALVE AND HOSE CONNECTIONS

Check the PCV hose connections.

Check the PCV valve.

Click hereEngine / Hybrid System>M20C-FKS, M20D-FKS (EMISSION CONTROL)>PCV VALVE>INSPECTION202111,999999,_51,_111790,_0503713,RM100000001ZFOM,

OK:: PCV hose and PCV valve are connected correctly and are not damaged.

Result:

Proceed to
OK
NG

13.CHECK INTAKE SYSTEM

REPAIR OR REPLACE PCV VALVE OR HOSE

13.CHECK INTAKE SYSTEM

Check the intake system for vacuum leaks.

Click hereEngine / Hybrid System>M20C-FKS, M20D-FKS (INTAKE / EXHAUST)>INTAKE SYSTEM>ON-VEHICLE INSPECTION202111,999999,_51,_111792,_0503715,RM100000001ZFOV,

OK:: No leaks in 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>INITIALIZATION202303,999999,_51,_111785,_0504416,RM1000000029BFF,

Result:

Proceed to
OK
NG

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

REPAIR OR REPLACE INTAKE SYSTEM

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

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

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

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

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	Voltage
A/F (O2) Sensor Current B1S1 (Air fuel ratio [sensor 1])	12.5%	Rich	Below -0.075 mA
A/F (O2) Sensor Current B1S1 (Air fuel ratio [sensor 1])	-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
A/F (O2) Sensor Current B1S2 (Air fuel ratio [sensor 2])	-12.5%	Lean	More than 0.33 mA

Result:

Status A/F (O2) Sensor Current B1S1	Status A/F (O2) Sensor Current B1S2	Air Fuel Ratio Condition and Air Fuel Ratio Sensor Condition	Suspected Trouble Area	Proceed to
Lean/Rich	Lean/Rich	Normal	-	A
Lean	Lean	Actual air fuel ratio lean	· PCV valve and hose · PCV hose connections · Gas leak from exhaust system · Intake system · Fuel pressure · Mass air flow meter sub-assembly · Engine coolant temperature sensor · EGR valve assembly
Rich	Rich	Actual air fuel ratio rich	· Gas leak from exhaust system · Ignition system · Fuel pressure · Mass air flow meter sub-assembly · Engine coolant temperature sensor · EGR valve assembly
Lean	Lean/Rich	Air fuel ratio sensor (sensor 1) malfunction	· Air fuel ratio sensor (sensor 1)	B
Rich	Lean/Rich	Air fuel ratio sensor (sensor 1) malfunction	· Air fuel ratio sensor (sensor 1)	B

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 and A/F (O2) Sensor Current B1S2].; Click hereEngine / Hybrid System>M20C-FKS, M20D-FKS (ENGINE CONTROL)>SFI SYSTEM>DATA LIST / ACTIVE TEST202303,999999,_51,_111785,_0504416,RM100000002BJEC,

15.READ VALUE USING GTS (COOLANT TEMPERATURE)

24.INSPECT AIR FUEL RATIO SENSOR (SENSOR 1) (HEATER RESISTANCE)

15.READ VALUE USING GTS (COOLANT TEMPERATURE)

Read the Data List twice, when the engine is both cold and warmed up.

Powertrain > Engine > Data List

Tester Display
Coolant Temperature

50003 372 205

Standard:

GTS Display	Condition	Specified Condition
Coolant Temperature	Cold engine	Same as ambient air temperature
Coolant Temperature	Warm engine	Between 75 and 100°C (167 and 212°F)

HINT:: Perform "Inspection After Repair" after replacing the engine coolant temperature sensor.; Click hereEngine / Hybrid System>M20C-FKS, M20D-FKS (ENGINE CONTROL)>SFI SYSTEM>INITIALIZATION202303,999999,_51,_111785,_0504416,RM1000000029BFF,

Result:

Proceed to
OK
NG

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

REPLACE ENGINE COOLANT TEMPERATURE SENSOR

Click hereEngine / Hybrid System>M20C-FKS, M20D-FKS (ENGINE CONTROL)>ENGINE COOLANT TEMPERATURE SENSOR>REMOVAL202203,999999,_51,_111785,_0503277,RM1000000022E6M,

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

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

HINT:: The A/C switch and all accessory switches should be off.

Powertrain > Engine > Data List

Tester Display
Coolant Temperature

50003 372 205

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:

-	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

18.READ VALUE USING GTS (MASS AIR FLOW SENSOR)

17.INSPECT EGR VALVE ASSEMBLY

Remove the EGR valve assembly.

Click hereEngine / Hybrid System>M20C-FKS, M20D-FKS (EMISSION CONTROL)>EGR VALVE>REMOVAL202303,999999,_51,_111790,_0503705,RM100000002AUOO,

Check if the EGR valve is stuck open.

OK:: EGR valve is tightly closed.

HINT:: Perform "Inspection After Repair" after replacing the EGR valve assembly.; Click hereEngine / Hybrid System>M20C-FKS, M20D-FKS (ENGINE CONTROL)>SFI SYSTEM>INITIALIZATION202303,999999,_51,_111785,_0504416,RM1000000029BFF,

Result:

Proceed to
OK
NG

18.READ VALUE USING GTS (MASS AIR FLOW SENSOR)

REPLACE EGR VALVE ASSEMBLY

Click hereEngine / Hybrid System>M20C-FKS, M20D-FKS (EMISSION CONTROL)>EGR VALVE>REMOVAL202303,999999,_51,_111790,_0503705,RM100000002AUOO,

18.READ VALUE USING GTS (MASS AIR FLOW SENSOR)

Start the engine.

Allow the engine to idle until Coolant Temperature reaches 75°C (167°F) or higher.

Powertrain > Engine > Data List

Tester Display
Engine Speed
Mass Air Flow Sensor
Coolant Temperature

50003 372 211,215,205

Read Mass Air Flow Sensor while maintaining an engine speed of 3000 rpm.

Standard:

GTS Display	Condition	Specified Condition
Mass Air Flow Sensor	Engine warmed up Shift position: P A/C: Off Engine Speed: 3000 rpm	Between 8 and 13 gm/sec

Result:

Proceed to
OK
NG

19.CHECK FUEL PRESSURE (FOR LOW PRESSURE SIDE)

31.CHECK HARNESS AND CONNECTOR (MASS AIR FLOW METER SUB-ASSEMBLY CONNECTOR CONNECTION)

19.CHECK FUEL PRESSURE (FOR LOW PRESSURE SIDE)

Click hereEngine / Hybrid System>M20C-FKS, M20D-FKS (FUEL)>FUEL SYSTEM>ON-VEHICLE INSPECTION202111,999999,_51,_111793,_0504174,RM100000001ZHDC_01_0005,

Result:

Proceed to
OK
NG

20.CHECK FOR EXHAUST GAS LEAK

23.CHECK FUEL LINE

20.CHECK FOR EXHAUST GAS LEAK

OK:: No gas leaks.

HINT:: Perform "Inspection After Repair" after repairing or replacing the exhaust system.; Click hereEngine / Hybrid System>M20C-FKS, M20D-FKS (ENGINE CONTROL)>SFI SYSTEM>INITIALIZATION202303,999999,_51,_111785,_0504416,RM1000000029BFF,

Result:

Proceed to
OK
NG

21.INSPECT SPARK PLUG

REPAIR OR REPLACE EXHAUST SYSTEM

21.INSPECT SPARK PLUG

Click hereEngine / Hybrid System>M20C-FKS, M20D-FKS (ENGINE CONTROL)>IGNITION SYSTEM>ON-VEHICLE INSPECTION202111,999999,_51,_111785,_0503263,RM100000001ZE0J,

HINT:: Perform "Inspection After Repair" after replacing the spark plug.; Click hereEngine / Hybrid System>M20C-FKS, M20D-FKS (ENGINE CONTROL)>SFI SYSTEM>INITIALIZATION202303,999999,_51,_111785,_0504416,RM1000000029BFF,

Result:

Proceed to
OK
NG

22.CHECK FOR SPARK (SPARK TEST)

REPLACE SPARK PLUG

Click hereEngine / Hybrid System>M20C-FKS, M20D-FKS (ENGINE CONTROL)>IGNITION COIL AND SPARK PLUG>REMOVAL202111,999999,_51,_111785,_0503276,RM100000001ZE1Y,

22.CHECK FOR SPARK (SPARK TEST)

Click hereEngine / Hybrid System>M20C-FKS, M20D-FKS (ENGINE CONTROL)>IGNITION SYSTEM>ON-VEHICLE INSPECTION202111,999999,_51,_111785,_0503263,RM100000001ZE0J,

HINT:: ·

If the result of the spark test is normal, proceed to the next step.

·

Perform "Inspection After Repair" after replacing the spark plug or ignition coil assembly.

Click hereEngine / Hybrid System>M20C-FKS, M20D-FKS (ENGINE CONTROL)>SFI SYSTEM>INITIALIZATION202303,999999,_51,_111785,_0504416,RM1000000029BFF,

Result:

Proceed to
NEXT

31.CHECK HARNESS AND CONNECTOR (MASS AIR FLOW METER SUB-ASSEMBLY CONNECTOR CONNECTION)

23.CHECK FUEL LINE

Check the fuel lines for leaks or blockage.

Result:

Proceed to
OK
NG

GO TO FUEL PUMP CONTROL CIRCUIT

Click hereEngine / Hybrid System>M20C-FKS, M20D-FKS (ENGINE CONTROL)>SFI SYSTEM>Fuel Pump Control Circuit202303,999999,_51,_111785,_0504416,RM1000000029J5K,

REPAIR OR REPLACE FUEL SYSTEM

24.INSPECT AIR FUEL RATIO SENSOR (SENSOR 1) (HEATER RESISTANCE)

Click hereEngine / Hybrid System>M20C-FKS, M20D-FKS (ENGINE CONTROL)>AIR FUEL RATIO SENSOR (for Sensor 1)>INSPECTION202303,999999,_51,_111785,_0503279,RM10000000291TW,

HINT:: Perform "Inspection After Repair" after replacing the air fuel ratio sensor (sensor 1).; Click hereEngine / Hybrid System>M20C-FKS, M20D-FKS (ENGINE CONTROL)>SFI SYSTEM>INITIALIZATION202303,999999,_51,_111785,_0504416,RM1000000029BFF,

Result:

Proceed to
OK
NG

25.CHECK TERMINAL VOLTAGE (POWER SOURCE OF AIR FUEL RATIO SENSOR (SENSOR 1))

REPLACE AIR FUEL RATIO SENSOR (SENSOR 1)

Click hereEngine / Hybrid System>M20C-FKS, M20D-FKS (ENGINE CONTROL)>AIR FUEL RATIO SENSOR (for Sensor 1)>REMOVAL202111,999999,_51,_111785,_0503279,RM100000001ZE2B,

25.CHECK TERMINAL VOLTAGE (POWER SOURCE OF AIR FUEL RATIO SENSOR (SENSOR 1))

Disconnect the air fuel ratio sensor (sensor 1) connector.

Turn the ignition switch to ON.

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

Standard Voltage:

Tester Connection

Switch Condition

Specified Condition

Click Location & Routing(C72)Location & Routingewd_type=routing;type=c;code=C72

Click Connector(C72)Engine Compartment>Engine Wire>Air Fuel Ratio Sensorewd_type=component;type=c;code=C72;pinno=2

C72-2 (+B) - Body ground

Ignition switch ON

11 to 14 V

Result:

Proceed to
OK
NG

26.CHECK HARNESS AND CONNECTOR (AIR FUEL RATIO SENSOR (SENSOR 1) - ECM)

REPAIR OR REPLACE AIR FUEL RATIO SENSOR (SENSOR 1) POWER SOURCE CIRCUIT

Click hereEngine / Hybrid System>M20C-FKS, M20D-FKS (ENGINE CONTROL)>SFI SYSTEM>P003012202303,999999,_51,_111785,_0504416,RM1000000029K30,P003012

26.CHECK HARNESS AND CONNECTOR (AIR FUEL RATIO SENSOR (SENSOR 1) - ECM)

Disconnect the air fuel ratio sensor (sensor 1) connector.

Disconnect the ECM connector.

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

Standard Resistance:

Tester Connection	Condition	Specified Condition
Click Location & Routing(C72,C115)Location & Routingewd_type=routing;type=c,c;code=C72,C115 Click Connector(C72)Engine Compartment>Engine Wire>Air Fuel Ratio Sensorewd_type=component;type=c;code=C72;pinno=1,3,4 Click Connector(C115)Engine Compartment>Engine Wire>ECMewd_type=component;type=c;code=C115;pinno=10,169,168
C72-1 (HA1A) - C115-10 (HA1A)	Always	Below 1 Ω
C72-3 (A1A+) - C115-169 (A1A+)	Always	Below 1 Ω
C72-4 (A1A-) - C115-168 (A1A-)	Always	Below 1 Ω
C72-1 (HA1A) or C115-10 (HA1A) - Body ground and other terminals	Always	10 kΩ or higher
C72-3 (A1A+) or C115-169 (A1A+) - Body ground and other terminals	Always	10 kΩ or higher
C72-4 (A1A-) or C115-168 (A1A-) - Body ground and other terminals	Always	10 kΩ or higher

Result:

Proceed to
OK
NG

27.REPLACE AIR FUEL RATIO SENSOR (SENSOR 1)

REPAIR OR REPLACE HARNESS OR CONNECTOR

27.REPLACE AIR FUEL RATIO SENSOR (SENSOR 1)

Click hereEngine / Hybrid System>M20C-FKS, M20D-FKS (ENGINE CONTROL)>AIR FUEL RATIO SENSOR (for Sensor 1)>REMOVAL202111,999999,_51,_111785,_0503279,RM100000001ZE2B,

HINT:: Perform "Inspection After Repair" after replacing the air fuel ratio sensor (sensor 1).; Click hereEngine / Hybrid System>M20C-FKS, M20D-FKS (ENGINE CONTROL)>SFI SYSTEM>INITIALIZATION202303,999999,_51,_111785,_0504416,RM1000000029BFF,

Result:

Proceed to
NEXT

28.CLEAR DTC

Clear the DTCs.

Powertrain > Engine > Clear DTCs: 50002 372

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

Result:

Proceed to
NEXT

29.CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED

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

Read the DTCs.

Powertrain > Engine > Trouble Codes: 50001 372

Result:

Result	Proceed to
DTCs are not output	A
DTC P017100, P017200, P117000 and/or P117B00 is output	B

END

30.READ VALUE USING GTS (MASS AIR FLOW SENSOR)

Start the engine.

Allow the engine to idle until Coolant Temperature reaches 75°C (167°F) or higher.

Powertrain > Engine > Data List

Tester Display
Engine Speed
Mass Air Flow Sensor
Coolant Temperature

50003 372 211,215,205

Read Mass Air Flow Sensor while maintaining an engine speed of 3000 rpm.

Standard:

GTS Display	Condition	Specified Condition
Mass Air Flow Sensor	Engine warmed up Shift position: P A/C: Off Engine Speed: 3000 rpm	Between 8 and 13 gm/sec

Result:

Proceed to
NEXT

31.CHECK HARNESS AND CONNECTOR (MASS AIR FLOW METER SUB-ASSEMBLY CONNECTOR CONNECTION)

Check the connection and terminal contact pressure of connectors and wire harnesses between the mass air flow meter sub-assembly and ECM.

Click hereGeneral>INTRODUCTION>HOW TO TROUBLESHOOT ECU CONTROLLED SYSTEMS>ELECTRONIC CIRCUIT INSPECTION PROCEDURE202111,999999,_V1,_111779,_0504974,RM100000001ZKRP,

HINT:: Repair any problems.

Result:

Proceed to
NEXT

32.CLEAR DTC

Clear the DTCs.

Powertrain > Engine > Clear DTCs: 50002 372

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

Result:

Proceed to
NEXT

33.CHECK WHETHER DTC OUTPUT RECURS (DTC P017100, P017200, P117000 OR P117B00)

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

Read the DTCs.

Powertrain > Engine > Trouble Codes: 50001 372

Result:

Result	Proceed to
DTCs are not output	A
DTC P017100, P017200, P117000 or P117B00 is output	B

END

34.CHECK HARNESS AND CONNECTOR (MASS AIR FLOW METER SUB-ASSEMBLY - ECM)

Disconnect the mass air flow meter sub-assembly connector.

Disconnect the ECM connector.

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

Standard Resistance:

Tester Connection	Condition	Specified Condition
Click Location & Routing(C18,C115)Location & Routingewd_type=routing;type=c,c;code=C18,C115 Click Connector(C18)Engine Compartment>Engine Wire>Intake Mass Air Flow Meter Sub-Assemblyewd_type=component;type=c;code=C18;pinno=3,1,2 Click Connector(C115)Engine Compartment>Engine Wire>ECMewd_type=component;type=c;code=C115;pinno=137,135,136
C18-3 (VCC) - C115-137 (VCVG)	Always	Below 1 Ω
C18-1 (FG) - C115-135 (VG)	Always	Below 1 Ω
C18-2 (E2G) - C115-136 (E2G)	Always	Below 1 Ω
C18-3 (VCC) or C115-137 (VCVG) - Body ground and other terminals	Always	10 kΩ or higher
C18-1 (FG) or C115-135 (VG) - Body ground and other terminals	Always	10 kΩ or higher
C18-2 (E2G) or C115-136 (E2G) - Body ground and other terminals	Always	10 kΩ or higher

Result:

Proceed to
OK
NG

35.INSPECT MASS AIR FLOW METER SUB-ASSEMBLY

REPAIR OR REPLACE HARNESS OR CONNECTOR

35.INSPECT MASS AIR FLOW METER SUB-ASSEMBLY

Click hereEngine / Hybrid System>M20C-FKS, M20D-FKS (ENGINE CONTROL)>MASS AIR FLOW METER>INSPECTION202111,999999,_51,_111785,_0503273,RM100000001ZE1M,

Result:

Proceed to
NEXT

36.CLEAR DTC

Clear the DTCs.

Powertrain > Engine > Clear DTCs: 50002 372

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

Result:

Proceed to
NEXT

37.CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED

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

Read the DTCs.

Powertrain > Engine > Trouble Codes: 50001 372

Result:

Result	Proceed to
DTCs are not output	A
DTC P017100, P017200, P117000 and/or P117B00 are output	B

END

REPLACE ECM

Click hereEngine / Hybrid System>M20C-FKS, M20D-FKS (ENGINE CONTROL)>ECM>REMOVAL202303,999999,_51,_111785,_0503271,RM1000000029P3U,