RM3660EC _51 Engine / Hybrid System _080778 8ZR-FXE ENGINE CONTROL _0393982 SFI SYSTEM C

8ZR-FXE 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 the stoichiometric air fuel ratio. The signal from the air fuel ratio sensor 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 · 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	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).	· Fuel injector assembly · Mass air flow meter sub-assembly · Engine coolant temperature sensor · Ignition system · Fuel pressure · 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	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.

·

When the total of the short-term and long-term fuel trim values is within the malfunction threshold (and the engine coolant temperature is higher than 75°C [167°F]), the system is functioning normally.

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 +48% or higher, or -35% or less, the ECM interprets this as a fuel system malfunction.

2.292,1.75 2.656,1.75 false 1.906,1.74 1.583,1.438 1.583,1.438 1.406,1.438 false 2.302,3.073 2.708,3.073 false 1.927,3.146 1.656,3.5 1.656,3.5 1.458,3.5 false 2.323,0.448 4.24,0.698 1.917,0.25 10 false Fuel Compensation Amount 0.24,0.958 1.031,1.208 0.792,0.25 10 false P017100 0.25,1.229 1.427,1.802 1.177,0.573 10 false +48%: Malfunction Threshold of Lean Condition 1.979,1.667 2.448,1.875 0.469,0.208 10 false 1.48 2.021,2.427 2.49,2.635 0.469,0.208 10 false 1.0 1.979,2.99 2.448,3.198 0.469,0.208 10 false 0.65 0.24,3.052 1.031,3.302 0.792,0.25 10 false P017200 0.292,3.313 1.469,3.885 1.177,0.573 10 false -35%: Malfunction Threshold of Rich Condition

MONITOR STRATEGY

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

TYPICAL ENABLING CONDITIONS

Fuel system status	Closed loop
Auxiliary 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
Catalyst monitor	Not executed

TYPICAL MALFUNCTION THRESHOLDS

P017100 and P017200: Fuel-trim Lean/Rich
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>8ZR-FXE (ENGINE CONTROL)>SFI SYSTEM>DTC CHECK / CLEAR202304,999999,_51,_080778,_0393982,RM100000002BDLJ,

·

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 0.531,0.344 1.635,0.74 1.104,0.396 10 false 100 km/h [Engine running] 0.594,1.208 1.646,1.646 1.052,0.438 10 false 60 km/h [Engine running] 1.333,1.979 1.948,2.177 0.615,0.198 10 false Idling 0.375,2.281 2.094,2.719 1.719,0.438 10 false Power Switch on (IG) 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 5 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 power switch on (IG).

Turn the GTS on.

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

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

Turn the power switch on (IG) [A].

Turn the GTS on.

Put the engine in Inspection Mode (Maintenance Mode).

Click hereGeneral>INTRODUCTION>REPAIR INSTRUCTION>INSPECTION MODE PROCEDURE201906,999999,_V1,_080724,_0393249,RM100000001HWSJ,

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

10.

With the engine warmed up, idle the engine for 5 minutes or more [C].

11.

With the engine running, 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.

HINT:: If the engine stops, further depress the accelerator pedal to restart the engine.

12.

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

13.

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 circuit.

Click hereEngine / Hybrid System>8ZR-FXE (ENGINE CONTROL)>SFI SYSTEM>P003012202304,999999,_51,_080778,_0393982,RM100000002BDLN_07,P003012

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

Click hereEngine / Hybrid System>8ZR-FXE (ENGINE CONTROL)>SFI SYSTEM>P010012202304,999999,_51,_080778,_0393982,RM100000002BDZL_07,P010012

CAUTION / NOTICE / HINT

NOTICE:: ·

Vehicle Control History may be stored in the hybrid vehicle control ECU assembly if the engine is malfunctioning. Certain vehicle condition information is recorded when Vehicle Control History is stored. Reading the vehicle conditions recorded in both the Freeze Frame Data and Vehicle Control History can be useful for troubleshooting.

Click hereEngine / Hybrid System>HYBRID / BATTERY CONTROL>PA10 HYBRID CONTROL SYSTEM (for LITHIUM-ION BATTERY)>VEHICLE CONTROL HISTORY (RoB)202304,999999,_51,_080773,_0600291,RM100000002BBVZ,

(Select Powertrain in Health Check and then check the time stamp data.)

Click hereEngine / Hybrid System>8ZR-FXE (ENGINE CONTROL)>SFI SYSTEM>DTC CHECK / CLEAR202304,999999,_51,_080778,_0393982,RM100000002BDLJ,

·

If any "Engine Malfunction" Vehicle Control History item has been stored in the hybrid vehicle control ECU assembly, make sure to clear it. However, as all Vehicle Control History items are cleared simultaneously, if any Vehicle Control History items other than "Engine Malfunction" are stored, make sure to perform any troubleshooting for them before clearing Vehicle Control History.

Click hereEngine / Hybrid System>HYBRID / BATTERY CONTROL>PA10 HYBRID CONTROL SYSTEM (for LITHIUM-ION BATTERY)>VEHICLE CONTROL HISTORY (RoB)202304,999999,_51,_080773,_0600291,RM100000002BBVZ,

·

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 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 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 power switch on (IG).

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 or P017200 and other DTCs are output	B

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

2.CHECK PCV HOSE CONNECTIONS

GO TO DTC CHART

Click hereEngine / Hybrid System>8ZR-FXE (ENGINE CONTROL)>SFI SYSTEM>DIAGNOSTIC TROUBLE CODE CHART202304,999999,_51,_080778,_0393982,RM100000002BDLL,

2.CHECK PCV HOSE CONNECTIONS

Check the PCV hose connections.

Click hereEngine / Hybrid System>8ZR-FXE (EMISSION CONTROL)>PCV VALVE>COMPONENTS201906,999999,_51,_080789,_0392067,RM100000001HNVT,

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

Result:

Proceed to
OK
NG

3.CHECK INTAKE SYSTEM

REPAIR OR REPLACE PCV HOSE

3.CHECK INTAKE SYSTEM

Check the intake system for vacuum leaks.

Click hereEngine / Hybrid System>8ZR-FXE (INTAKE / EXHAUST)>INTAKE SYSTEM>ON-VEHICLE INSPECTION201906,999999,_51,_080790,_0392070,RM100000001HNVV,

OK:: No leaks from intake system.

HINT:: Perform "Inspection After Repair" after repairing or replacing the intake system.; Click hereEngine / Hybrid System>8ZR-FXE (ENGINE CONTROL)>SFI SYSTEM>INITIALIZATION202304,999999,_51,_080778,_0393982,RM100000002BDLI,

Result:

Proceed to
OK
NG

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

REPAIR OR REPLACE INTAKE SYSTEM

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

Connect the GTS to the DLC3.

Turn the power switch on (IG).

Turn the GTS on.

Put the engine in Inspection Mode (Maintenance Mode).

Powertrain > Hybrid Control > Utility

Tester Display
Inspection Mode

50005 397 2103

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

Idle the engine for 5 minutes or more with park (P) selected.

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 O2 Sensor Voltage 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
O2 Sensor Voltage B1S2

50004 372 8 205,225,218

Change the fuel injection volume using the GTS, and monitor the output voltage of the air fuel ratio sensor (A/F (O2) Sensor Voltage B1S1) and heated oxygen sensor (O2 Sensor Voltage B1S2) displayed on the GTS.

HINT:: ·

The Active Test [Control the Injection Volume for A/F Sensor] can be used to lower the fuel injection volume by 12.5% or increase the injection volume by 12.5%.

·

The air fuel ratio sensor is displayed as A/F (O2) Sensor Voltage B1S1, and the heated oxygen sensor is displayed as O2 Sensor Voltage B1S2 on the GTS.

·

The air fuel ratio sensor has an output delay of a few seconds and the heated oxygen sensor 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	Voltage
A/F (O2) Sensor Voltage B1S1 (Air fuel ratio)	12.5%	Rich	Below 3.1 V
A/F (O2) Sensor Voltage B1S1 (Air fuel ratio)	-12.5%	Lean	Higher than 3.4 V
O2 Sensor Voltage B1S2 (Heated oxygen)	12.5%	Rich	Higher than 0.55 V
O2 Sensor Voltage B1S2 (Heated oxygen)	-12.5%	Lean	Below 0.4 V

Result:

Status A/F (O2) Sensor Voltage B1S1	Status O2 Sensor Voltage 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 · Fuel injector assembly blockage · 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	· Fuel injector assembly leak or blockage · 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 malfunction	· Air fuel ratio sensor	B
Rich	Lean/Rich	Air fuel ratio sensor malfunction	· Air fuel ratio sensor	B

Lean: While performing the Active Test [Control the Injection Volume for A/F Sensor], the air fuel ratio sensor output voltage (A/F (O2) Sensor Voltage B1S1) is consistently higher than 3.4 V, and the heated oxygen sensor output voltage (O2 Sensor Voltage B1S2) is consistently below 0.4 V.

Rich: While performing the Active Test [Control the Injection Volume for A/F Sensor], the air fuel ratio sensor output voltage (A/F (O2) Sensor Voltage B1S1) is consistently below 3.1 V, and the heated oxygen sensor output voltage (O2 Sensor Voltage B1S2) is consistently higher than 0.55 V.

Lean/Rich: While performing the Active Test [Control the Injection Volume for A/F Sensor], the output voltage of the fuel ratio sensor (A/F (O2) Sensor Voltage B1S1) or heated oxygen sensor (O2 Sensor Voltage B1S2) alternates correctly.

HINT:: Refer to "Data List / Active Test" [A/F (O2) Sensor Voltage B1S1 and O2 Sensor Voltage B1S2].; Click hereEngine / Hybrid System>8ZR-FXE (ENGINE CONTROL)>SFI SYSTEM>DATA LIST / ACTIVE TEST202304,999999,_51,_080778,_0393982,RM100000002BBG2,

5.READ VALUE USING GTS (COOLANT TEMPERATURE)

13.INSPECT AIR FUEL RATIO SENSOR (HEATER RESISTANCE)

5.READ VALUE USING GTS (COOLANT TEMPERATURE)

Connect the GTS to the DLC3.

Turn the power switch on (IG).

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>8ZR-FXE (ENGINE CONTROL)>SFI SYSTEM>INITIALIZATION202304,999999,_51,_080778,_0393982,RM100000002BDLI,

Result:

Proceed to
OK
NG

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

REPLACE ENGINE COOLANT TEMPERATURE SENSOR

Click hereEngine / Hybrid System>8ZR-FXE (ENGINE CONTROL)>ENGINE COOLANT TEMPERATURE SENSOR>REMOVAL202304,999999,_51,_080778,_0392139,RM100000002BCJ3,

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

Connect the GTS to the DLC3.

Turn the power switch on (IG).

Turn the GTS on.

Put the engine in Inspection Mode (Maintenance Mode).

Powertrain > Hybrid Control > Utility

Tester Display
Inspection Mode

50005 397 2103

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.

Enter the following menus: Powertrain / Engine / Active Test / Control the EGR Step Position / Data List / Intake Manifold Absolute Pressure, Coolant Temperature and Engine Independent.

Powertrain > Engine > Active Test

Active Test Display
Control the EGR Step Position

Data List Display
Intake Manifold Absolute Pressure
Coolant Temperature
Engine Independent

50004 372 25 385,205,428

Confirm that the value of Data List item Engine Independent is "Operate" then check the value of Intake Manifold Absolute Pressure while performing the Active Test.

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 changes in response to the EGR step position when the value of Engine Independent is "Operate".

Standard:

-	Control the EGR Step Position (Active Test)
-	0 Steps	0 to 30 Steps
Intake Manifold Absolute Pressure (Data List)	(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:: ·

If the value of Data List item Engine Independent is "Not Opr" when the engine is idling, charge control is being performed. Perform the Active Test after charge control is complete ("Operate" is displayed).

·

While performing the Active Test, if the increase in the value of Intake Manifold Absolute Pressure is small, the EGR valve assembly may be malfunctioning.

·

Even if the EGR valve assembly is malfunctioning, rough idling or an increase in the value of Intake Manifold Absolute Pressure may occur while performing the Active Test. However, the amount that the value of Intake Manifold Absolute Pressure increases will be smaller than normal.

Result:

Proceed to
OK
NG

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

7.INSPECT EGR VALVE ASSEMBLY

Remove the EGR valve assembly.

Click hereEngine / Hybrid System>8ZR-FXE (EMISSION CONTROL)>EGR VALVE>REMOVAL202304,999999,_51,_080789,_0392057,RM100000002B0PO,

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>8ZR-FXE (ENGINE CONTROL)>SFI SYSTEM>INITIALIZATION202304,999999,_51,_080778,_0393982,RM100000002BDLI,

Result:

Proceed to
OK
NG

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

REPLACE EGR VALVE ASSEMBLY

Click hereEngine / Hybrid System>8ZR-FXE (EMISSION CONTROL)>EGR VALVE>REMOVAL202304,999999,_51,_080789,_0392057,RM100000002B0PO,

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

Connect the GTS to the DLC3.

Turn the power switch on (IG).

Turn the GTS on.

Put the engine in Inspection Mode (Maintenance Mode).

Powertrain > Hybrid Control > Utility

Tester Display
Inspection Mode

50005 397 2103

Start the engine.

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 is 75°C (167°F) or higher.

Read Mass Air Flow Sensor with the engine speed at 2500 rpm.

HINT:: During charge control, the engine speed is set at idle. Therefore, the engine speed will not increase when the accelerator pedal is depressed. In this case, read the Data List after charge control has completed.

Standard:

GTS Display	Condition	Specified Condition
Mass Air Flow Sensor	Engine warmed up Shift position: P A/C: Off Engine Speed: 2500 rpm	Between 4.5 and 8.5 gm/sec

Result:

Proceed to
OK
NG

9.CHECK FUEL PRESSURE

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

9.CHECK FUEL PRESSURE

Check the fuel pressure.

Click hereEngine / Hybrid System>8ZR-FXE (FUEL)>FUEL SYSTEM>ON-VEHICLE INSPECTION202304,999999,_51,_080749,_0393854,RM10000000293H2_01_0002,

Result:

Proceed to
OK
NG

10.CHECK FOR EXHAUST GAS LEAK

REPAIR OR REPLACE FUEL SYSTEM

10.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>8ZR-FXE (ENGINE CONTROL)>SFI SYSTEM>INITIALIZATION202304,999999,_51,_080778,_0393982,RM100000002BDLI,

Result:

Proceed to
OK
NG

11.INSPECT IGNITION SYSTEM

REPAIR OR REPLACE EXHAUST SYSTEM

11.INSPECT IGNITION SYSTEM

Inspect the ignition system.

Click hereEngine / Hybrid System>8ZR-FXE (ENGINE CONTROL)>IGNITION SYSTEM>ON-VEHICLE INSPECTION201906,999999,_51,_080778,_0392131,RM100000001HO7L,

HINT:: ·

If the spark plugs or ignition system malfunctions, engine misfire may occur. The misfire count can be read using the GTS. Enter the following menus: Powertrain / Engine / Data List / Misfire Count Cylinder #1 to Misfire Count Cylinder #4.

·

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

Click hereEngine / Hybrid System>8ZR-FXE (ENGINE CONTROL)>SFI SYSTEM>INITIALIZATION202304,999999,_51,_080778,_0393982,RM100000002BDLI,

Result:

Proceed to
OK
NG

12.INSPECT FUEL INJECTOR ASSEMBLY (INJECTION AND VOLUME)

REPAIR OR REPLACE IGNITION SYSTEM

12.INSPECT FUEL INJECTOR ASSEMBLY (INJECTION AND VOLUME)

Check the injection and volume.

HINT:: ·

Refer to the fuel injector assembly inspection procedure.

Click hereEngine / Hybrid System>8ZR-FXE (FUEL)>FUEL INJECTOR>INSPECTION201906,999999,_51,_080749,_0393855,RM100000001I0F7,

·

If the fuel injector assemblies malfunction, engine misfire may occur. The misfire count can be read using the GTS. Enter the following menus: Powertrain / Engine / Data List / Misfire Count Cylinder #1 to Misfire Count Cylinder #4.

·

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

Click hereEngine / Hybrid System>8ZR-FXE (ENGINE CONTROL)>SFI SYSTEM>INITIALIZATION202304,999999,_51,_080778,_0393982,RM100000002BDLI,

Result:

Proceed to
OK
NG

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

REPLACE FUEL INJECTOR ASSEMBLY

Click hereEngine / Hybrid System>8ZR-FXE (FUEL)>FUEL INJECTOR>REMOVAL202304,999999,_51,_080749,_0393855,RM10000000293H4,

13.INSPECT AIR FUEL RATIO SENSOR (HEATER RESISTANCE)

Inspect the air fuel ratio sensor.

Click hereEngine / Hybrid System>8ZR-FXE (ENGINE CONTROL)>AIR FUEL RATIO SENSOR>INSPECTION202304,999999,_51,_080778,_0392141,RM10000000295U4,

HINT:: Perform "Inspection After Repair" after replacing the air fuel ratio sensor.; Click hereEngine / Hybrid System>8ZR-FXE (ENGINE CONTROL)>SFI SYSTEM>INITIALIZATION202304,999999,_51,_080778,_0393982,RM100000002BDLI,

Result:

Proceed to
OK
NG

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

REPLACE AIR FUEL RATIO SENSOR

Click hereEngine / Hybrid System>8ZR-FXE (ENGINE CONTROL)>AIR FUEL RATIO SENSOR>REMOVAL202304,999999,_51,_080778,_0392141,RM10000000295UP,

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

0.573,0.927 0.969,1.177 0.396,0.25 1.875,0.865 2.292,0.448 true 0.458,0.125 0.771,0.323 0.313,0.198 10 false *a 0.635,0.958 1.094,1.156 0.458,0.198 10 false C55 2.333,0.385 2.646,0.583 0.313,0.198 10 false +B

*a	Front view of wire harness connector (to Air Fuel Ratio Sensor)

Disconnect the air fuel ratio sensor connector.

Turn the power switch on (IG).

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

Standard Voltage:

Tester Connection	Condition	Specified Condition
C55-2 (+B) - Body ground	Power switch on (IG)	11 to 14 V

Result:

Proceed to
OK
NG

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

23.INSPECT EFI-MAIN NO. 2 RELAY

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

Disconnect the air fuel ratio sensor 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) - C155-28 (HA1A)	Always	Below 1 Ω
C55-3 (A1A+) - C155-132 (A1A+)	Always	Below 1 Ω
C55-4 (A1A-) - C155-131 (A1A-)	Always	Below 1 Ω
C55-1 (HA1A) or C155-28 (HA1A) - Body ground and other terminals	Always	10 kΩ or higher
C55-3 (A1A+) or C155-132 (A1A+) - Body ground and other terminals	Always	10 kΩ or higher
C55-4 (A1A-) or C155-131 (A1A-) - Body ground and other terminals	Always	10 kΩ or higher

Result:

Proceed to
OK
NG

16.REPLACE AIR FUEL RATIO SENSOR

REPAIR OR REPLACE HARNESS OR CONNECTOR

16.REPLACE AIR FUEL RATIO SENSOR

Replace the air fuel ratio sensor.

Click hereEngine / Hybrid System>8ZR-FXE (ENGINE CONTROL)>AIR FUEL RATIO SENSOR>REMOVAL202304,999999,_51,_080778,_0392141,RM10000000295UP,

HINT:: Perform "Inspection After Repair" after replacing the air fuel ratio sensor.; Click hereEngine / Hybrid System>8ZR-FXE (ENGINE CONTROL)>SFI SYSTEM>INITIALIZATION202304,999999,_51,_080778,_0393982,RM100000002BDLI,

Result:

Proceed to
NEXT

17.CLEAR DTC

Connect the GTS to the DLC3.

Turn the power switch on (IG).

Turn the GTS on.

Clear the DTCs.

Powertrain > Engine > Clear DTCs: 50002 372

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

Result:

Proceed to
NEXT

18.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 or P017200 is output	B

END

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

Connect the GTS to the DLC3.

Turn the power switch on (IG).

Turn the GTS on.

Put the engine in Inspection Mode (Maintenance Mode).

Powertrain > Hybrid Control > Utility

Tester Display
Inspection Mode

50005 397 2103

Start the engine.

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 is 75°C (167°F) or higher.

Read Mass Air Flow Sensor with the engine speed at 2500 rpm.

HINT:: During charge control, the engine speed is set at idle. Therefore, the engine speed will not increase when the accelerator pedal is depressed. In this case, read the Data List after charge control has completed.

Standard:

GTS Display	Condition	Specified Condition
Mass Air Flow Sensor	Engine warmed up Shift position: P A/C: Off Engine Speed: 2500 rpm	Between 4.5 and 8.5 gm/sec

Result:

Proceed to
NEXT

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 power switch on (IG).

Turn the GTS on.

Clear the DTCs.

Powertrain > Engine > Clear DTCs: 50002 372

Turn the power 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 or P017200 is output	B

END

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

23.INSPECT EFI-MAIN NO. 2 RELAY

Inspect the EFI-MAIN NO. 2 relay.

Click hereEngine / Hybrid System>8ZR-FXE (ENGINE CONTROL)>RELAY>ON-VEHICLE INSPECTION202304,999999,_51,_080778,_0392143,RM10000000295VN_01_0026,

Result:

Proceed to
OK
NG

24.CHECK TERMINAL VOLTAGE (POWER SOURCE OF EFI-MAIN NO. 2 RELAY)

REPLACE EFI-MAIN NO. 2 RELAY

24.CHECK TERMINAL VOLTAGE (POWER SOURCE OF EFI-MAIN NO. 2 RELAY)

0.063,0.052 0.375,0.208 0.313,0.156 10 false *1 0.208,0.417 0.521,0.573 0.313,0.156 10 false *2

*1	No. 1 Engine Room Relay Block and No. 1 Junction Block Assembly
*2	EFI-MAIN NO. 2 Relay

Remove the EFI-MAIN NO. 2 relay from the No. 1 engine room relay block and No. 1 junction block assembly.

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

Standard Voltage (for TFTM made):

Tester Connection	Condition	Specified Condition
3 (EFI-MAIN NO. 2 relay) - Body ground	Always	11 to 14 V

Standard Voltage (for GTMC made):

Tester Connection	Condition	Specified Condition
5 (EFI-MAIN NO. 2 relay) - Body ground	Always	11 to 14 V

Result:

Proceed to
OK
NG

25.CHECK HARNESS AND CONNECTOR (EFI-MAIN NO. 2 RELAY - BODY GROUND)

REPAIR OR REPLACE HARNESS OR CONNECTOR (AUXILIARY BATTERY - EFI-MAIN NO. 2 RELAY)

25.CHECK HARNESS AND CONNECTOR (EFI-MAIN NO. 2 RELAY - BODY GROUND)

Remove the EFI-MAIN NO. 2 relay from the No. 1 engine room relay block and No. 1 junction block assembly.

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

Standard Resistance:

Tester Connection	Condition	Specified Condition
1 (EFI-MAIN NO. 2 relay) - Body ground	Always	Below 1 Ω

Result:

Proceed to
OK
NG

26.CHECK HARNESS AND CONNECTOR (EFI-MAIN NO. 2 RELAY - AIR FUEL RATIO SENSOR)

REPAIR OR REPLACE HARNESS OR CONNECTOR

26.CHECK HARNESS AND CONNECTOR (EFI-MAIN NO. 2 RELAY - AIR FUEL RATIO SENSOR)

Remove the EFI-MAIN NO. 2 relay from the No. 1 engine room relay block and No. 1 junction block assembly.

Disconnect the air fuel ratio sensor connector.

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

Standard Resistance (for TFTM made):

Tester Connection	Condition	Specified Condition
5 (EFI-MAIN NO. 2 relay) - C55-2 (+B)	Always	Below 1 Ω
5 (EFI-MAIN NO. 2 relay) or C55-2 (+B) - Body ground and other terminals	Always	10 kΩ or higher

Standard Resistance (for GTMC made):

Tester Connection	Condition	Specified Condition
3 (EFI-MAIN NO. 2 relay) - C55-2 (+B)	Always	Below 1 Ω
3 (EFI-MAIN NO. 2 relay) or C55-2 (+B) - Body ground and other terminals	Always	10 kΩ or higher

Result:

Proceed to
OK
NG

REPAIR OR REPLACE HARNESS OR CONNECTOR (EFI-MAIN NO. 1 RELAY - EFI-MAIN NO. 2 RELAY)

REPAIR OR REPLACE HARNESS OR CONNECTOR

27.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
C26-4 (VCC) - C155-108 (VCVG)	Always	Below 1 Ω
C26-3 (FG) - C155-140 (VG)	Always	Below 1 Ω
C26-2 (E2G) - C155-107 (E2G)	Always	Below 1 Ω
C26-4 (VCC) or C155-108 (VCVG) - Body ground and other terminals	Always	10 kΩ or higher
C26-3 (FG) or C155-140 (VG) - Body ground and other terminals	Always	10 kΩ or higher
C26-2 (E2G) or C155-107 (E2G) - Body ground and other terminals	Always	10 kΩ or higher

Result:

Proceed to
OK
NG

28.REPLACE MASS AIR FLOW METER SUB-ASSEMBLY

REPAIR OR REPLACE HARNESS OR CONNECTOR

28.REPLACE MASS AIR FLOW METER SUB-ASSEMBLY

Replace the mass air flow meter sub-assembly.

Click hereEngine / Hybrid System>8ZR-FXE (ENGINE CONTROL)>MASS AIR FLOW METER>REMOVAL202304,999999,_51,_080778,_0392135,RM10000000295U1,

HINT:: ·

If the result of the inspection performed in steps 8 and 19 (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>8ZR-FXE (ENGINE CONTROL)>SFI SYSTEM>INITIALIZATION202304,999999,_51,_080778,_0393982,RM100000002BDLI,

Result:

Proceed to
NEXT

29.CLEAR DTC

Connect the GTS to the DLC3.

Turn the power switch on (IG).

Turn the GTS on.

Clear the DTCs.

Powertrain > Engine > Clear DTCs: 50002 372

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

Result:

Proceed to
NEXT

30.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 or P017200 is output	B

END

REPLACE ECM

Click hereEngine / Hybrid System>8ZR-FXE (ENGINE CONTROL)>ECM>REMOVAL202304,999999,_51,_080778,_0392134,RM10000000295VL,