SFI SYSTEM(w/ Canister Pump Module), Diagnostic DTC:P017100, P017200, P017400, P017500, P117000, P117B00

DTC Code	DTC Name
P017100	System Too Lean Bank 1
P017200	System Too Rich Bank 1
P017400	System Too Lean Bank 2
P017500	System Too Rich Bank 2
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	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 (for port injection) Fuel injector assembly (for direct injection) 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 (bank 1 sensor 1) circuit Air fuel ratio sensor (bank 1 sensor 1) PCV valve and hose PCV hose connections EGR valve assembly Wire harness or connector ECM	Comes on	DTC stored	SAE: 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 (for port injection) Fuel injector assembly (for direct injection) 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 (bank 1 sensor 1) circuit Air fuel ratio sensor (bank 1 sensor 1) EGR valve assembly Wire harness or connector ECM	Comes on	DTC stored	SAE: P0172
P017400	System Too Lean Bank 2	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 (for port injection) Fuel injector assembly (for direct injection) 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 (bank 2 sensor 1) circuit Air fuel ratio sensor (bank 2 sensor 1) PCV valve and hose PCV hose connections EGR valve assembly Wire harness or connector ECM	Comes on	DTC stored	SAE: P0174
P017500	System Too Rich Bank 2	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 (for port injection) Fuel injector assembly (for direct injection) 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 (bank 2 sensor 1) circuit Air fuel ratio sensor (bank 2 sensor 1) EGR valve assembly Wire harness or connector ECM	Comes on	DTC stored	SAE: P0175
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)	Fuel injector assembly (for port injection) Fuel injector assembly (for direct injection) Fuel pressure PCV valve and hose PCV hose connections ECM	-	DTC stored	SAE: 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)	Fuel injector assembly (for port injection) Fuel injector assembly (for direct injection) Fuel pressure PCV valve and hose PCV hose connections ECM	-	DTC stored	SAE: P117B

Tech Tips

When DTC P017100 or P017400 is stored, the actual air fuel ratio is on the lean side. When DTC P017200 or P017500 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 or P017400 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 fault in the fuel system and stores a DTC.

Example:

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

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

P0171, P0172, P0174 and P0175: 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	35% 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)

P1170: Fuel Trim (Port Injection Fail)
DTCs of fuel system have already been set	-
EVAP purge-cut	Executing
Direct injection	100%
Both of the following conditions are met	1 and 2
1. Average between short-term fuel trim and long-term fuel trim	Less than 35% (varies with engine coolant temperature)
2. Average between short-term fuel trim and long-term fuel trim	Higher than -35% (varies with engine coolant temperature)

P117B: Fuel Trim (Direct Injection Fail)
DTCs of fuel system have already been set	-
EVAP purge-cut	Executing
Port injection	100%
Both of the following conditions are met	1 and 2
1. Average between short-term fuel trim and long-term fuel trim	Less than 35% (varies with engine coolant temperature)
2. Average between short-term fuel trim and long-term fuel trim	Higher than -35% (varies with engine coolant temperature)

CONFIRMATION DRIVING PATTERN

Connect the GTS to the DLC3.
Turn the power switch on (IG) and 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) and turn the GTS on [A].
Put the engine in Inspection Mode (2WD for measuring Exhaust Gas).

Click here
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 [B].
With the engine warmed up, idle the engine for 5 minutes or more [C].
With the engine running, drive the vehicle at a speed between 75 and 120 km/h (47 and 75 mph) for 5 minutes or more [D].

CAUTION:

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

Tech Tips

If the engine stops, further depress the accelerator pedal to restart the engine.
Stop the vehicle, and idle the engine for 5 minutes or more [E].
Enter the following menus: Powertrain / Engine / Trouble Codes [F].
Read the pending DTCs.

Tech Tips

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

WIRING DIAGRAM

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

Click here

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

Click here

CAUTION / NOTICE / HINT

Note

Vehicle Control History may be stored in the hybrid vehicle control ECU 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 here

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

Click here
If any "Engine Malfunction" Vehicle Control History item has been stored in the hybrid vehicle control ECU, 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 here

Tech Tips

Bank 1 refers to the bank that includes the No. 1 cylinder*.

*: The No. 1 cylinder is the cylinder which is farthest from the transmission.
Bank 2 refers to the bank that does not include the No. 1 cylinder.
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) current 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) current 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

CHECK ANY OTHER DTCS OUTPUT (IN ADDITION TO DTC P017100, P017200, P017400, P017500, P117000 OR P117B00)

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

Result

Result	Proceed to
DTC P017100, P017200, P017400, P017500, P117000 or P117B00 is output	A
DTC P017100, P017200, P017400, P017500, P117000 and/or P117B00 and other DTCs are output	B

Tech Tips

If any DTCs other than P017100, P017200, P017400, P017500, P117000 or P117B00 are output, troubleshoot those DTCs first.

GO TO DTC CHART Click here

PERFORM ACTIVE TEST USING GTS (CONTROL THE INJECTION MODE)

Connect the GTS to the DLC3.
Turn the power switch on (IG).
Turn the GTS on.
Put the engine in Inspection Mode (2WD for measuring Exhaust Gas).

Powertrain > Hybrid Control > Utility

Tester Display

Inspection Mode
Start the engine and warm it up.

Tester Display
Inspection Mode

Enter the following menus: Powertrain / Engine / Active Test / Control the Injection Mode / Port / Data List / Injection Mode, Short FT B1S1 and Long FT B1S1 and/or Short FT B2S1 and Long FT B2S1.

Powertrain > Engine > Active Test

Active Test Display
Control the Injection Mode

Data List Display
Injection Mode
Short FT B1S1
Short FT B2S1
Long FT B1S1
Long FT B2S1

Read the values displayed on the GTS.

OK

Short FT B1S1 (B2S1) + Long FT B1S1 (B2S1) = Between -20% and +20% [Port injection]

OK
Short FT B1S1 (B2S1) + Long FT B1S1 (B2S1) = Between -20% and +20% [Port injection]

Enter the following menus: Powertrain / Engine / Active Test / Control the Injection Mode / Direct / Data List / Injection Mode, Short FT B1S1 and Long FT B1S1 and/or Short FT B2S1 and Long FT B2S1.

Powertrain > Engine > Active Test

Active Test Display
Control the Injection Mode

Data List Display
Injection Mode
Short FT B1S1
Short FT B2S1
Long FT B1S1
Long FT B2S1

Read the values displayed on the GTS.

OK
Short FT B1S1 (B2S1) + Long FT B1S1 (B2S1) = Between -20% and +20% [Direct injection]

Result

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

READ VALUE USING GTS (FUEL PRESSURE (HIGH)) Click here

INSPECT FUEL INJECTOR ASSEMBLY (FOR PORT INJECTION) Click here

CHECK PCV HOSE CONNECTIONS Click here

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 here

READ VALUE USING GTS (FUEL PRESSURE (HIGH))

Connect the GTS to the DLC3.
Turn the power switch on (IG).
Turn the GTS on.
Put the engine in Inspection Mode (2WD for measuring Exhaust Gas).

Powertrain > Hybrid Control > Utility

Tester Display

Inspection Mode
Start the engine.
Enter the following menus: Powertrain / Engine / Data List / Fuel Pressure (High).

Powertrain > Engine > Data List

Tester Display

Fuel Pressure (High)

Tester Display
Inspection Mode

Tester Display
Fuel Pressure (High)

Read the values.

Standard
2500 rpm (engine warmed up, park (P) selected, A/C off)
2000 to 20000 kPag

Result

Proceed to
OK
NG

CHECK MISFIRE COUNT OF DIRECT INJECTION Click here

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

Connect the GTS to the DLC3.
Turn the power switch on (IG).
Turn the GTS on.
Put the engine in Inspection Mode (2WD for measuring Exhaust Gas).

Powertrain > Hybrid Control > Utility

Tester Display

Inspection Mode
Start the engine and warm it up.

Tester Display
Inspection Mode

Enter the following menus: Powertrain / Engine / Active Test / Control the Injection Mode / Direct / Data List / High Pressure Fuel Pump Duty Ratio (D4), Injection Mode, Short FT B1S1, Long FT B1S1, Short FT B2S1 and Long FT B2S1.

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
Short FT B2S1
Long FT B1S1
Long FT B2S1

Read the values displayed on the GTS.

Tech Tips

The A/C switch and all accessory switches should be off and park (P) should be selected and the engine should be fully warmed up.

Result

Item			Proceed to
High Pressure Fuel Pump Duty Ratio (D4)	Short FT B1S1 + Long FT B1S1	Short FT B2S1 + Long FT B2S1	Proceed to
10 to 40%	-	-	A
40% or higher	-20% or less	-20% or less	B
10% or less	+20% or higher	+20% or higher	B
40% or higher	+20% or higher	+20% or higher	C
10% or less	-20% or less	-20% or less	D

Tech Tips

Perform "Inspection After Repair" after replacing the fuel pressure sensor (for high pressure side) or fuel pump assembly (for high pressure side).

Click here

REPLACE FUEL DELIVERY PIPE WITH SENSOR ASSEMBLY LH (FUEL PRESSURE SENSOR (FOR HIGH PRESSURE SIDE)) Click here

REPLACE FUEL PUMP ASSEMBLY (FOR HIGH PRESSURE SIDE) Click here

REPLACE ECM Click here

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

Connect the GTS to the DLC3.
Turn the power switch on (IG).
Turn the GTS on.
Put the engine in Inspection Mode (2WD for measuring Exhaust Gas).

Powertrain > Hybrid Control > Utility

Tester Display

Inspection Mode
Start the engine and warm it up.

Tester Display
Inspection Mode

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
Short FT B2S1
Long FT B1S1
Long FT B2S1

Read the values displayed on the GTS.

Tech Tips

The A/C switch and all accessory switches should be off, and park (P) should be selected, and the engine should be fully warmed up.

Result

Item			Proceed to
High Pressure Fuel Pump Duty Ratio (D4)	Short FT B1S1 + Long FT B1S1	Short FT B2S1 + Long FT B2S1	Proceed to
10 to 40%	-25% or less	-25% or less	A
10 to 40%	-25% or less	-25 to +25%	B
10 to 40%	-25 to +25%	-25% or less	C
10 to 40%	+30% or higher	+30% or higher	A
10 to 40%	+25% or higher	-25 to +25%	B
10 to 40%	-25 to +25%	+25% or higher	C
10 to 40%	-25 to +25%	-25 to +25%	D

Tech Tips

Perform "Inspection After Repair" after replacing the fuel injector assembly (for direct injection).

Click here

REPLACE FUEL INJECTOR ASSEMBLY (FOR DIRECT INJECTION (ALL CYLINDERS)) Click here

REPLACE FUEL INJECTOR ASSEMBLY (FOR DIRECT INJECTION (BANK 1)) Click here

REPLACE FUEL INJECTOR ASSEMBLY (FOR DIRECT INJECTION (BANK 2)) Click here

CHECK FOR INTERMITTENT PROBLEMS Click here

CHECK MISFIRE COUNT OF DIRECT INJECTION

Connect the GTS to the DLC3.
Turn the power switch on (IG).
Turn the GTS on.
Put the engine in Inspection Mode (2WD for measuring Exhaust Gas).

Powertrain > Hybrid Control > Utility

Tester Display

Inspection Mode
Start the engine and warm it up.

Enter the following menus: Powertrain / Engine / Active Test / Control the Injection Mode / Direct / Data List / Injection Mode and Misfire Count Cylinder #1 to Misfire Count Cylinder #6.

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
Misfire Count Cylinder #5
Misfire Count Cylinder #6

Read the values displayed on the GTS.

Tech Tips

The A/C switch and all accessory switches should be off, and park (P) should be selected, and the engine should be fully warmed up.

Result

Injection Way	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

Tech Tips

Perform "Inspection After Repair" after replacing the fuel injector assembly (for direct injection).

Click here

REPLACE FUEL INJECTOR ASSEMBLY (FOR DIRECT INJECTION) Click here

REPLACE FUEL PUMP ASSEMBLY (FOR HIGH PRESSURE SIDE)

Replace the fuel pump assembly (for high pressure side).

Click here

Tech Tips

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

Click here

Result

Proceed to
NEXT

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

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

Result

Proceed to
NEXT

CHECK WHETHER DTC OUTPUT RECURS (DTC P017100, P017200, P017400, P017500, P117000 OR P117B00)

Drive the vehicle in accordance with the driving pattern described in the Confirmation Driving Pattern.
Enter the following menus: Powertrain / Engine / Trouble Codes.

Read the pending DTCs.

Powertrain > Engine > Trouble Codes

Result

Result	Proceed to
DTC P017100, P017200, P017400, P017500, P117000 and/or P117B00 is output	A
DTCs are not output	B

REPLACE ECM Click here

END

INSPECT FUEL INJECTOR ASSEMBLY (FOR PORT INJECTION)

Check the injection volume (whether fuel volume is high or low, and whether injection pattern is poor).

Click here

Tech Tips

Perform "Inspection After Repair" after replacing the fuel injector assembly (for port injection).

Click here

Result

Proceed to
OK
NG

REPLACE ECM Click here

REPLACE FUEL INJECTOR ASSEMBLY (FOR PORT INJECTION) Click here

CHECK PCV HOSE CONNECTIONS

Check the PCV hose connections.

Click here

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

Result

Proceed to
OK
NG

REPAIR OR REPLACE PCV HOSE

CHECK INTAKE SYSTEM

Check the intake system for vacuum leaks.

Click here

OK
No leaks in intake system.

Tech Tips

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

Click here

Result

Proceed to
OK
NG

REPAIR OR REPLACE INTAKE SYSTEM

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 (2WD for measuring Exhaust Gas).

Powertrain > Hybrid Control > Utility

Tester Display

Inspection Mode
Start the engine.
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 / A/F (O2) Sensor Current B1S1 and A/F (O2) Sensor Current B1S2 or A/F (O2) Sensor Current B2S1 and A/F (O2) Sensor Current B2S2.

Powertrain > Engine > Active Test

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

Data List Display
A/F (O2) Sensor Voltage B1S1
A/F (O2) Sensor Voltage B2S1
A/F (O2) Sensor Current B1S2
A/F (O2) Sensor Current B2S2

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

Monitor the output values of the air fuel ratio sensor (sensor 1) and air fuel ratio sensor (sensor 2) (A/F (O2) Sensor Voltage B1S1 and A/F (O2) Sensor Current B1S2 or A/F (O2) Sensor Voltage B2S1 and A/F (O2) Sensor Current B2S2) displayed on the GTS.

Tech Tips

Change the injection volume 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	Value
A/F (O2) Sensor Voltage B1S1 A/F (O2) Sensor Voltage B2S1 (Air fuel ratio (sensor 1))	12.5%	Rich	Below 3.1 V
	-12.5%	Lean	Higher than 3.4 V
A/F (O2) Sensor Current B1S2 A/F (O2) Sensor Current B2S2 (Air fuel ratio (sensor 2))	12.5%	Rich	Below -0.86 mA
	-12.5%	Lean	Higher than 0.33 mA

Result

Status A/F (O2) Sensor Current B1S1 or A/F (O2) Sensor Current B2S1	Status A/F (O2) Sensor Current B1S2 or A/F (O2) Sensor Current B2S2	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 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 voltages (A/F (O2) Sensor Voltage B1S1 or A/F (O2) Sensor Voltage B2S1) is consistently higher than 3.4 V, and the air fuel ratio sensor (sensor 2) output currents (A/F (O2) Sensor Current B1S2 or A/F (O2) Sensor Current B2S2) is consistently higher than 0.33 mA.
Rich: During the Control the Injection Volume for A/F Sensor Active Test, the A/F (O2) Sensor Voltage B1S1 or A/F (O2) Sensor Voltage B2S1 is consistently below 3.1 V, and the A/F (O2) Sensor Current B1S2 or A/F (O2) Sensor Current B2S2 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.

Tech Tips

Refer to "Data List / Active Test" [A/F (O2) Sensor Voltage B1S1, A/F (O2) Sensor Voltage B2S1, A/F (O2) Sensor Current B1S2 and A/F (O2) Sensor Current B2S2].

Click here

INSPECT AIR FUEL RATIO SENSOR (SENSOR 1) (HEATER RESISTANCE) Click here

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

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)

Tech Tips

Perform "Inspection After Repair" after replacing the engine coolant temperature sensor.

Click here

Result

Proceed to
OK
NG

REPLACE ENGINE COOLANT TEMPERATURE SENSOR Click here

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 (2WD for measuring Exhaust Gas).

Powertrain > Hybrid Control > Utility

Tester Display

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

Tech Tips

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

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

Powertrain > Engine > Active Test

Active Test Display
Control the EGR Step Position

Data List Display
Intake Manifold Absolute Pressure
Engine Independent

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.

Note

Make sure that the value of Data List item Engine Independent is "Operate" while performing the Active Test.
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

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

Tech Tips

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

GO TO STEP 18 Click here

INSPECT EGR VALVE ASSEMBLY

Remove the EGR valve assembly.

Click here

Check if the EGR valve is stuck open.

OK
EGR valve is tightly closed.

Tech Tips

Perform "Inspection After Repair" after replacing the EGR valve assembly.

Click here

Result

Proceed to
OK
NG

REPLACE EGR VALVE ASSEMBLY Click here

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 (2WD for measuring Exhaust Gas).

Powertrain > Hybrid Control > Utility

Tester Display

Inspection Mode
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

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 2500 rpm.

Tech Tips

During charge control, the engine speed is set at idle. Therefore, the engine speed does not increase when depressing the accelerator pedal. In this case, read the Data List item 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 10.8 and 16.0 gm/sec

Result

Proceed to
OK
NG

GO TO STEP 30 Click here

CHECK FUEL PRESSURE (FOR LOW PRESSURE SIDE)

Check the fuel pressure (for low pressure side).

Click here

Result

Proceed to
OK
NG

CHECK FUEL LINE Click here

CHECK FOR EXHAUST GAS LEAK

Check for exhaust gas leaks.

OK
No gas leaks.

Tech Tips

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

Click here

Result

Proceed to
OK
NG

REPAIR OR REPLACE EXHAUST SYSTEM

INSPECT IGNITION SYSTEM

Inspect the ignition system.

Click here

Tech Tips

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 #6.
Perform "Inspection After Repair" after repairing or replacing the ignition system.

Click here

Result

Proceed to
OK
NG

GO TO STEP 30 Click here

REPAIR OR REPLACE IGNITION SYSTEM

CHECK FUEL LINE

Check the fuel lines for leaks or blockage.

Result

Proceed to
OK
NG

GO TO FUEL PUMP CONTROL CIRCUIT Click here

REPAIR OR REPLACE FUEL SYSTEM

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

Inspect the air fuel ratio sensor (sensor 1).

Click here

Tech Tips

Perform "Inspection After Repair" after replacing the air fuel ratio sensor (sensor 1).

Click here

Result

Proceed to
OK
NG

REPLACE AIR FUEL RATIO SENSOR (SENSOR 1) Click here

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

Front view of wire harness connector

(to Air Fuel Ratio Sensor (Sensor 1))

Bank 1

Bank 2

Disconnect the air fuel ratio sensor (sensor 1) 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
G26-2 (+B) - Body ground	Power switch on (IG)	11 to 14 V
G27-2 (+B) - Body ground	Power switch on (IG)	11 to 14 V

Result

Proceed to
OK
NG

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

CHECK HARNESS AND CONNECTOR (AIR FUEL RATIO SENSOR - 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
G26-1 (HA1A) - G1-52 (HA1A)	Always	Below 1 Ω
G26-3 (A1A+) - G1-125 (A1A+)	Always	Below 1 Ω
G26-4 (A1A-) - G1-126 (A1A-)	Always	Below 1 Ω
G27-1 (HA2A) - G1-17 (HA2A)	Always	Below 1 Ω
G27-3 (A2A+) - G1-123 (A2A+)	Always	Below 1 Ω
G27-4 (A2A-) - G1-124 (A2A-)	Always	Below 1 Ω
G26-1 (HA1A) or G1-52 (HA1A) - Body ground and other terminals	Always	10 kΩ or higher
G26-3 (A1A+) or G1-125 (A1A+) - Body ground and other terminals	Always	10 kΩ or higher
G26-4 (A1A-) or G1-126 (A1A-) - Body ground and other terminals	Always	10 kΩ or higher
G27-1 (HA2A) or G1-17 (HA2A) - Body ground and other terminals	Always	10 kΩ or higher
G27-3 (A2A+) or G1-123 (A2A+) - Body ground and other terminals	Always	10 kΩ or higher
G27-4 (A2A-) or G1-124 (A2A-) - Body ground and other terminals	Always	10 kΩ or higher

Result

Proceed to
OK
NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

REPLACE AIR FUEL RATIO SENSOR (SENSOR 1)

Replace the air fuel ratio sensor (sensor 1).

Click here

Tech Tips

Perform "Inspection After Repair" after replacing the air fuel ratio sensor (sensor 1).

Click here

Result

Proceed to
NEXT

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

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

Result

Proceed to
NEXT

CHECK WHETHER DTC OUTPUT RECURS (DTC P017100, P017200, P017400, P017500, P117000 OR P117B00)

Drive the vehicle in accordance with the driving pattern described in the Confirmation Driving Pattern.
Enter the following menus: Powertrain / Engine / Trouble Codes.

Read the pending DTCs.

Powertrain > Engine > Trouble Codes

Result

Result	Proceed to
DTC P017100, P017200, P017400, P017500, P117000 and/or P117B00 is output	A
DTCs are not output	B

END

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 (2WD for measuring Exhaust Gas).

Powertrain > Hybrid Control > Utility

Tester Display

Inspection Mode
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

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 2500 rpm.

Tech Tips

Standard

GTS Display

Condition

Specified Condition

Mass Air Flow Sensor

Engine warmed up

Shift position: P

A/C: Off

Engine Speed: 2500 rpm

Between 10.8 and 16.0 gm/sec

Result

Proceed to
NEXT

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 here

Tech Tips

Repair any problems.

Result

Proceed to
NEXT

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

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

Result

Proceed to
NEXT

CHECK WHETHER DTC OUTPUT RECURS (DTC P017100, P017200, P017400, P017500, P117000 OR P117B00)

Drive the vehicle in accordance with the driving pattern described in the Confirmation Driving Pattern.
Enter the following menus: Powertrain / Engine / Trouble Codes.

Read the pending DTCs.

Powertrain > Engine > Trouble Codes

Result

Result	Proceed to
DTC P017100, P017200, P017400, P017500, P117000 and/or P117B00 is output	A
DTCs are not output	B

END

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
G23-3 (VCC) - G1-90 (VCVG)	Always	Below 1 Ω
G23-1 (FG) - G1-116 (VG)	Always	Below 1 Ω
G23-2 (E2G) - G1-115 (E2G)	Always	Below 1 Ω
G23-3 (VCC) or G1-90 (VCVG) - Body ground and other terminals	Always	10 kΩ or higher
G23-1 (FG) or G1-116 (VG) - Body ground and other terminals	Always	10 kΩ or higher

Result

Proceed to
OK
NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

REPLACE MASS AIR FLOW METER SUB-ASSEMBLY

Replace the mass air flow meter sub-assembly.

Click here

Tech Tips

If the result of the inspection performed in step 18 and 29 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 here

Result

Proceed to
NEXT

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

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

Result

Proceed to
NEXT

CHECK WHETHER DTC OUTPUT RECURS (DTC P017100, P017200, P017400, P017500, P117000 OR P117B00)

Drive the vehicle in accordance with the driving pattern described in the Confirmation Driving Pattern.
Enter the following menus: Powertrain / Engine / Trouble Codes.

Read the pending DTCs.

Powertrain > Engine > Trouble Codes

Result

Result	Proceed to
DTC P017100, P017200, P017400, P017500, P117000 and/or P117B00 is output	A
DTCs are not output	B

REPLACE ECM Click here

END