RM3660EC _51 Engine / Hybrid System _080777 NR Series ENGINE CONTROL _0393969 SFI SYSTEM C

NR Series ENGINE CONTROL SFI SYSTEM P017100 System Too Lean Bank 1 P017200 System Too Rich Bank 1

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	Memory	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 · Fuel injector assembly · Mass air flow meter sub-assembly · Engine coolant temperature sensor · Fuel pressure · Fuel delivery pipe · Gas leak from exhaust system · Open or short in air fuel ratio sensor (sensor 1) circuit · Air fuel ratio sensor (sensor 1) · Purge VSV · PCV system · Wire harness or connector · ECM	Comes on	DTC stored	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).	· Intake system · Fuel injector assembly · Mass air flow meter sub-assembly · Engine coolant temperature sensor · Ignition system · Fuel pressure · Fuel delivery pipe · Gas leak from exhaust system · Open or short in air fuel ratio sensor (sensor 1) circuit · Air fuel ratio sensor (sensor 1) · Wire harness or connector · ECM	Comes on	DTC stored	SAE Code: P0172

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.

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 fault in the fuel system and stores a DTC.

Example:

The average fuel trim learned value is +48% 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 1.48 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 +48%: 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

MONITOR STRATEGY

Required Sensors/Components	Air fuel ratio sensor (sensor 1) Mass air flow meter sub-assembly Crankshaft position sensor
Frequency of Operation	Continuous

TYPICAL ENABLING CONDITIONS

Fuel system status	Closed loop
Battery voltage	11 V or higher
Either of the following conditions is met	1 or 2
1. Engine speed	Less than 1100 rpm
2. Engine load	10% or higher

TYPICAL MALFUNCTION THRESHOLDS

EVAP purge-cut	Executing
Either of the following conditions is met	1 or 2
1. Average between short-term fuel trim and long-term fuel trim	48% or higher (varies with engine coolant temperature)
2. Average between short-term fuel trim and long-term fuel trim	-35% or less (varies with engine coolant temperature)

CONFIRMATION DRIVING PATTERN

HINT:: ·

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

Click hereEngine / Hybrid System>NR Series (ENGINE CONTROL)>SFI SYSTEM>DTC CHECK / CLEAR201906,202304,_51,_080777,_0393969,RM100000001I1QP,202304,999999,_51,_080777,_0393969,RM100000002BZUH,

·

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 0.792,0.031 1.844,0.281 1.052,0.25 10 false Vehicle Speed 1.083,0.344 2.271,0.719 1.188,0.375 10 false 100 km/h 1.146,1.229 2.302,1.615 1.156,0.385 10 false 60 km/h 1.333,1.979 1.948,2.177 0.615,0.198 10 false Idling 0.552,2.281 2.271,2.719 1.719,0.438 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 3.281,1.875 3.896,2.073 0.615,0.198 10 false [C] 2.521,1.875 3.135,2.073 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 reaches 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 P003012 for the air fuel ratio sensor (sensor 1) circuit.

Click hereEngine / Hybrid System>NR Series (ENGINE CONTROL)>SFI SYSTEM>P003012201906,999999,_51,_080777,_0393969,RM100000001I1SX_07,P003012

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

Click hereEngine / Hybrid System>NR Series (ENGINE CONTROL)>SFI SYSTEM>P010012201906,999999,_51,_080777,_0393969,RM100000001I1T7_07,P010012

Refer to DTC P044313 for purge VSV circuit.

Click hereEngine / Hybrid System>NR Series (ENGINE CONTROL)>SFI SYSTEM>P044313201906,999999,_51,_080777,_0393969,RM100000001I1U0_02,P044313

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 OR P017200)

Connect the GTS to the DLC3.

Turn the ignition switch to ON.

Turn the GTS on.

Enter the following menus: Powertrain / Engine / Trouble Codes.

Read the DTCs.

Powertrain > Engine > Trouble Codes: 50001 372

Result:

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

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

2.INSPECT PURGE VSV

GO TO DTC CHART

Click hereEngine / Hybrid System>NR Series (ENGINE CONTROL)>SFI SYSTEM>DIAGNOSTIC TROUBLE CODE CHART201906,202007,_51,_080777,_0393969,RM100000001I1R8,202007,202304,_51,_080777,_0393969,RM100000001RKKF,202304,999999,_51,_080777,_0393969,RM100000002C0B1,

2.INSPECT PURGE VSV

Inspect the purge VSV.

Click hereEngine / Hybrid System>NR Series (EMISSION CONTROL)>PURGE VALVE>INSPECTION201906,999999,_51,_080792,_0392496,RM100000001HRBO,

Result:

Proceed to
OK
NG

3.CHECK HARNESS AND CONNECTOR (PURGE VSV - ECM)

REPLACE PURGE VSV

Click hereEngine / Hybrid System>NR Series (EMISSION CONTROL)>PURGE VALVE>REMOVAL201906,999999,_51,_080792,_0392496,RM100000001HRBQ,

3.CHECK HARNESS AND CONNECTOR (PURGE VSV - ECM)

Disconnect the purge VSV connector.

Disconnect the ECM connector.

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

Standard Resistance:

Tester Connection	Condition	Specified Condition
C29-2 - C78-70 (PRG)	Always	Below 1 Ω
C29-2 or C78-70 (PRG) - Body ground and other terminals	Always	10 kΩ or higher

Result:

Proceed to
OK
NG

4.CHECK PCV VALVE

REPAIR OR REPLACE HARNESS OR CONNECTOR

4.CHECK PCV VALVE

1.844,1.031 2.021,0.375 2.021,0.375 2.177,0.375 true 2.24,0.302 2.469,0.479 0.229,0.177 10 true *1

*1	Air Hole Cover

Before inspecting the PCV valve, first check that there is no suction from the air hole cover.

OK:: No suction from air hole cover, and PCV valve operation is normal.

Check PCV valve.

Click hereEngine / Hybrid System>NR Series (EMISSION CONTROL)>PCV VALVE>INSPECTION201906,999999,_51,_080792,_0392500,RM100000001HRBW,

Result:

Proceed to
OK
NG

5.CHECK INTAKE SYSTEM

REPAIR OR REPLACE PCV SYSTEM

5.CHECK INTAKE SYSTEM

Check the intake system for vacuum leaks.

Click hereEngine / Hybrid System>NR Series (INTAKE / EXHAUST)>INTAKE SYSTEM>ON-VEHICLE INSPECTION201906,999999,_51,_080791,_0392514,RM100000001HRD3_01_0001,

OK:: No leaks in intake system.

HINT:: Perform "Inspection After Repair" after repairing or replacing the intake system.; Click hereEngine / Hybrid System>NR Series (ENGINE CONTROL)>SFI SYSTEM>INITIALIZATION201906,999999,_51,_080777,_0393969,RM100000001I1RE,

Result:

Proceed to
OK
NG

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

REPAIR OR REPLACE INTAKE SYSTEM

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

Connect the GTS to the DLC3.

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

Turn the GTS on.

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

Enter the following menus: Powertrain / Engine / Active Test / Control the Injection Volume for A/F Sensor / Data List / Coolant Temperature, A/F (O2) Sensor Voltage B1S1 and A/F (O2) Sensor Current B1S2.

Powertrain > Engine > Active Test

Active Test Display
Control the Injection Volume for A/F Sensor

Data List Display
Coolant Temperature
A/F (O2) Sensor Voltage B1S1
A/F (O2) Sensor Current B1S2

50004 372 8 205,225,564

Perform the Control the Injection Volume for A/F Sensor for operation with the engine idling (change the fuel injection volume).

Monitor the output values of the air fuel ratio sensors (A/F (O2) Sensor Voltage 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 voltage does not change (almost no reaction) while performing the Active Test, the sensor may be malfunctioning.

Standard:

GTS Display (Sensor)	Injection Volume	Status	Value
A/F (O2) Sensor Voltage B1S1 (Air fuel ratio sensor (sensor 1))	12.5%	Rich	Below 3.1 V
	-12.5%	Lean	Higher than 3.4 V
A/F (O2) Sensor Current B1S2 (Air fuel ratio sensor (sensor 2))	12.5%	Rich	Below -0.86 mA
	-12.5%	Lean	More than 0.33 mA

Result:

Status of A/F (O2) Sensor Voltage B1S1	Status A/F (O2) Sensor Current B1S2	Air Fuel Ratio Condition and Air Fuel Ratio Sensor (Sensor 1) Condition	Suspected Trouble Area	Proceed to
Lean/Rich	Lean/Rich	Normal	-	A
Lean	Lean	Actual air fuel ratio lean	· PCV valve · PCV system · Gas leak from exhaust system · Intake system · Fuel pressure · Mass air flow meter sub-assembly · Engine coolant temperature sensor
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
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 voltage (A/F (O2) Sensor Voltage B1S1) is consistently higher than 3.4 V, 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 voltage (A/F (O2) Sensor Voltage B1S1) is consistently below 3.1 V, 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 value 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 Voltage B1S1, A/F (O2) Sensor Current B1S2].; Click hereEngine / Hybrid System>NR Series (ENGINE CONTROL)>SFI SYSTEM>DATA LIST / ACTIVE TEST201906,202007,_51,_080777,_0393969,RM100000001I1R7,202007,999999,_51,_080777,_0393969,RM100000001RKK9,

7.READ VALUE USING GTS (COOLANT TEMPERATURE)

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

7.READ VALUE USING GTS (COOLANT TEMPERATURE)

Connect the GTS to the DLC3.

Turn the ignition switch to ON.

Turn the GTS on.

Enter the following menus: Powertrain / Engine / Data List / Coolant Temperature.

Powertrain > Engine > Data List

Tester Display
Coolant Temperature

50003 372 205

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

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>NR Series (ENGINE CONTROL)>SFI SYSTEM>INITIALIZATION201906,999999,_51,_080777,_0393969,RM100000001I1RE,

Result:

Proceed to
OK
NG

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

REPLACE ENGINE COOLANT TEMPERATURE SENSOR

Click hereEngine / Hybrid System>NR Series (ENGINE CONTROL)>ENGINE COOLANT TEMPERATURE SENSOR>REMOVAL201906,999999,_51,_080777,_0392343,RM100000001HQ2H,

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

Connect the GTS to the DLC3.

Start the engine and warm it up.

Turn the GTS on.

Enter the following menus: Powertrain / Engine / Data List / Engine Speed, Mass Air Flow Sensor and Coolant Temperature.

Powertrain > Engine > Data List

Tester Display
Engine Speed
Mass Air Flow Sensor
Coolant Temperature

50003 372 211,215,205

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

Read Mass Air Flow Sensor with the engine speed at 3000 rpm.

Standard:

GTS Display	Condition	Specified Condition
Mass Air Flow Sensor	· Shift lever position: P · A/C: Off · Engine warmed up · Engine Speed: 3000 rpm	Between 4.0 and 14.0 gm/sec

Result:

Proceed to
OK
NG

9.CHECK FUEL PRESSURE (FOR LOW PRESSURE SIDE)

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

9.CHECK FUEL PRESSURE (FOR LOW PRESSURE SIDE)

Check the fuel pressure (for low pressure side).

Click hereEngine / Hybrid System>NR Series (FUEL)>FUEL SYSTEM>ON-VEHICLE INSPECTION201906,202304,_51,_080750,_0393845,RM100000001I0DQ_01_0002,202304,999999,_51,_080750,_0393845,RM100000002BH2I_01_0002,

Result:

Proceed to
OK
NG

10.READ VALUE USING GTS (HIGH FUEL PRESSURE SENSOR)

14.INSPECT FUEL PUMP (FOR LOW PRESSURE SIDE)

10.READ VALUE USING GTS (HIGH FUEL PRESSURE SENSOR)

Connect the GTS to the DLC3.

Start the engine and warm it up.

Turn the GTS on.

Enter the following menus: Powertrain / Engine / Data List / High Fuel Pressure Sensor.

Powertrain > Engine > Data List

Tester Display
High Fuel Pressure Sensor

50003 372 47

Read the values.

Standard:

GTS Display	Condition	Specified Condition
High Fuel Pressure Sensor	· Shift lever position: P · A/C: Off · Engine warmed up · Engine idling	2.4 to 30 MPa
High Fuel Pressure Sensor	· Shift lever position: P · A/C: Off · Engine warmed up · Engine speed: 3000 rpm	2.4 to 30 MPa

Result:

Proceed to
OK
NG

11.CHECK FOR EXHAUST GAS LEAK

CHECK AND REPLACE FUEL SYSTEM (FOR HIGH PRESSURE SIDE)

11.CHECK FOR EXHAUST GAS LEAK

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 hereEngine / Hybrid System>NR Series (ENGINE CONTROL)>SFI SYSTEM>INITIALIZATION201906,999999,_51,_080777,_0393969,RM100000001I1RE,

Result:

Proceed to
OK
NG

12.CHECK FOR SPARK (SPARK TEST)

REPAIR OR REPLACE EXHAUST SYSTEM

12.CHECK FOR SPARK (SPARK TEST)

Perform a spark test.

Click hereEngine / Hybrid System>NR Series (ENGINE CONTROL)>IGNITION SYSTEM>ON-VEHICLE INSPECTION201906,999999,_51,_080777,_0392332,RM100000001HQ1A_01_0001,

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 hereEngine / Hybrid System>NR Series (ENGINE CONTROL)>SFI SYSTEM>INITIALIZATION201906,999999,_51,_080777,_0393969,RM100000001I1RE,

Result:

Proceed to
NEXT

13.INSPECT FUEL INJECTOR ASSEMBLY

Check the resistance of the fuel injector assembly.

Click hereEngine / Hybrid System>NR Series (FUEL)>FUEL INJECTOR>INSPECTION201906,999999,_51,_080750,_0393846,RM100000001I0DV,

HINT:: Perform "Inspection After Repair" after replacing the fuel injector assembly.; Click hereEngine / Hybrid System>NR Series (ENGINE CONTROL)>SFI SYSTEM>INITIALIZATION201906,999999,_51,_080777,_0393969,RM100000001I1RE,

Result:

Proceed to
OK
NG

19.CHECK WHETHER DTC OUTPUT RECURS (DTC P017100 OR P017200)

REPLACE FUEL INJECTOR ASSEMBLY

Click hereEngine / Hybrid System>NR Series (FUEL)>FUEL INJECTOR>REMOVAL201906,202205,_51,_080750,_0393846,RM100000001I0DX,202205,202304,_51,_080750,_0393846,RM10000000231S4,202304,999999,_51,_080750,_0393846,RM100000002BCBA,

14.INSPECT FUEL PUMP (FOR LOW PRESSURE SIDE)

Inspect the fuel pump (for low pressure side).

Click hereEngine / Hybrid System>NR Series (FUEL)>FUEL PUMP>INSPECTION201906,999999,_51,_080750,_0393849,RM100000001I0E5,

HINT:: Perform "Inspection After Repair" after replacing the fuel pump (for low pressure side).; Click hereEngine / Hybrid System>NR Series (ENGINE CONTROL)>SFI SYSTEM>INITIALIZATION201906,999999,_51,_080777,_0393969,RM100000001I1RE,

Result:

Proceed to
OK
NG

REPAIR OR REPLACE FUEL LINE (FOR LOW PRESSURE SIDE)

REPLACE FUEL PUMP (FOR LOW PRESSURE SIDE)

Click hereEngine / Hybrid System>NR Series (FUEL)>FUEL PUMP>REMOVAL201906,202205,_51,_080750,_0393849,RM100000001I0EQ,202205,202304,_51,_080750,_0393849,RM10000000231T5,202304,999999,_51,_080750,_0393849,RM100000002BCBH,

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

Inspect the air fuel ratio sensor (sensor 1).

Click hereEngine / Hybrid System>NR Series (ENGINE CONTROL)>AIR FUEL RATIO SENSOR (for Sensor 1)>INSPECTION201906,999999,_51,_080777,_0392347,RM100000001HQ2V,

HINT:: Perform "Inspection After Repair" after replacing the air fuel ratio sensor (sensor 1).; Click hereEngine / Hybrid System>NR Series (ENGINE CONTROL)>SFI SYSTEM>INITIALIZATION201906,999999,_51,_080777,_0393969,RM100000001I1RE,

Result:

Proceed to
OK
NG

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

REPLACE AIR FUEL RATIO SENSOR (SENSOR 1)

Click hereEngine / Hybrid System>NR Series (ENGINE CONTROL)>AIR FUEL RATIO SENSOR (for Sensor 1)>REMOVAL201906,999999,_51,_080777,_0392347,RM100000001HQ2X,

16.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
C55-1 (HA1A) - C78-19 (HA1A)	Always	Below 1 Ω
C55-3 (A1A+) - C78-131 (A1A+)	Always	Below 1 Ω
C55-4 (A1A-) - C78-132 (A1A-)	Always	Below 1 Ω
C55-1 (HA1A) or C78-19 (HA1A) - Body ground and other terminals	Always	10 kΩ or higher
C55-3 (A1A+) or C78-131 (A1A+) - Body ground and other terminals	Always	10 kΩ or higher
C55-4 (A1A-) or C78-132 (A1A-) - Body ground and other terminals	Always	10 kΩ or higher

Result:

Proceed to
OK
NG

17.REPLACE AIR FUEL RATIO SENSOR (SENSOR 1)

REPAIR OR REPLACE HARNESS OR CONNECTOR

17.REPLACE AIR FUEL RATIO SENSOR (SENSOR 1)

Replace the air fuel ratio sensor (sensor 1).

Click hereEngine / Hybrid System>NR Series (ENGINE CONTROL)>AIR FUEL RATIO SENSOR (for Sensor 1)>REMOVAL201906,999999,_51,_080777,_0392347,RM100000001HQ2X,

HINT:: Perform "Inspection After Repair" after replacing the air fuel ratio sensor (sensor 1).; Click hereEngine / Hybrid System>NR Series (ENGINE CONTROL)>SFI SYSTEM>INITIALIZATION201906,999999,_51,_080777,_0393969,RM100000001I1RE,

Result:

Proceed to
NEXT

18.CLEAR DTC

Connect the GTS to the DLC3.

Turn the ignition switch to ON.

Turn the GTS on.

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

19.CHECK WHETHER DTC OUTPUT RECURS (DTC P017100 OR P017200)

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

Enter the following menus: Powertrain / Engine / Trouble Codes.

Read the DTCs.

Powertrain > Engine > Trouble Codes: 50001 372

Result:

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

END

20.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 PROCEDURE201906,999999,_V1,_080724,_0393250,RM100000001HWSP,

HINT:: Repair any problems.

Result:

Proceed to
NEXT

21.CLEAR DTC

Connect the GTS to the DLC3.

Turn the ignition switch to ON.

Turn the GTS on.

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

22.CHECK WHETHER DTC OUTPUT RECURS (DTC P017100 OR P017200)

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

Enter the following menus: Powertrain / Engine / Trouble Codes.

Read the DTCs.

Powertrain > Engine > Trouble Codes: 50001 372

Result:

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

END

23.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
C25-3 (VG) - C78-92 (VG)	Always	Below 1 Ω
C25-2 (E2G) - C78-91 (E2G)	Always	Below 1 Ω
C25-3 (VG) or C78-92 (VG) - Body ground and other terminals	Always	10 kΩ or higher

Result:

Proceed to
OK
NG

24.REPLACE MASS AIR FLOW METER SUB-ASSEMBLY

REPAIR OR REPLACE HARNESS OR CONNECTOR

24.REPLACE MASS AIR FLOW METER SUB-ASSEMBLY

Replace the mass air flow meter sub-assembly.

Click hereEngine / Hybrid System>NR Series (ENGINE CONTROL)>MASS AIR FLOW METER>REMOVAL201906,999999,_51,_080777,_0392339,RM100000001HQ23,

HINT:: ·

If the result of the inspection performed in step 8 (READ VALUE USING GTS (MASS AIR FLOW SENSOR)) indicated no problem, proceed to the next step without replacing the mass air flow meter sub-assembly.

·

Perform "Inspection After Repair" after replacing the mass air flow meter sub-assembly.

Click hereEngine / Hybrid System>NR Series (ENGINE CONTROL)>SFI SYSTEM>INITIALIZATION201906,999999,_51,_080777,_0393969,RM100000001I1RE,

Result:

Proceed to
NEXT

25.CLEAR DTC

Connect the GTS to the DLC3.

Turn the ignition switch to ON.

Turn the GTS on.

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

26.CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED

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

Enter the following menus: Powertrain / Engine / Trouble Codes.

Read the DTCs.

Powertrain > Engine > Trouble Codes: 50001 372

Result:

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

END

REPLACE ECM

Click hereEngine / Hybrid System>NR Series (ENGINE CONTROL)>ECM>REMOVAL201906,202205,_51,_080777,_0392337,RM100000001HQ1V,202205,202304,_51,_080777,_0392337,RM1000000022YB3,202304,999999,_51,_080777,_0392337,RM100000002BCAH,