Toyota Corolla Cross: System Too Lean Bank 1 (P017100,P017200,P117000,P117B00)

DESCRIPTION

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

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

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

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

HINT:

• When DTC P017100 is stored, the actual air fuel ratio is on the lean side. When DTC P017200 is stored, the actual air fuel ratio is on the rich side.
• If the vehicle runs out of fuel, the air fuel ratio is lean and DTC P017100 may be stored. The MIL is then illuminated.
• When DTC P117000 or P117B00 is output, it may not be possible to precisely determine whether the port injection or the direct injection is malfunctioning, depending on the conditions. In this case, perform an Active Test (Control the Injection Mode) to determine which injection system is malfunctioning.

MONITOR DESCRIPTION

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

Example:

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

MONITOR STRATEGY

Related DTCs	P0171: Fuel trim lean P0172: Fuel trim rich P1170: Fuel trim (port injection fail) P117B: Fuel trim (direct injection fail)
Required Sensors/Components (Main)	Fuel system
Required Sensors/Components (Related)	Air fuel ratio sensor (sensor 1) Mass air flow meter sub-assembly Crankshaft position sensor
Frequency of Operation	Continuous
Duration	Within 10 seconds
MIL Operation	2 driving cycles: P0171 and P0172 Immediate: P1170 and P117B
Sequence of Operation	None

TYPICAL ENABLING CONDITIONS

Monitor runs whenever the following DTCs are not stored	P0010, P1360, P1362, P1364, P1366, P2614 (Motor drive VVT system control module) P0011 (VVT system - advance) P0012 (VVT system - retard) P0013 (Exhaust VVT oil control solenoid) P0014 (Exhaust VVT system - advance) P0015 (Exhaust VVT system - retard) P0016 (VVT system - misalignment) P0017 (Exhaust VVT system - misalignment) P0031, P0032, P101D (Air fuel ratio sensor (sensor 1) heater) P0101, P0102, P0103 (Mass air flow meter) P0107, P0108 (Manifold absolute pressure) P0117, P0118 (Engine coolant temperature sensor) P0121, P0122, P0123, P0222, P0223, P2135 (Throttle position sensor) P0125 (Insufficient coolant temperature for closed loop fuel control) P0191, P0192, P0193 (Fuel pressure sensor (for high pressure side)) P0201, P0202, P0203, P0204, P062D, P21CF, P21D0, P21D1, P21D2 (Fuel injector) P0335, P0337, P0338 (Crankshaft position sensor) P0340, P0342, P0343 (Camshaft position sensor) P0365, P0367, P0368 (Exhaust camshaft position sensor) P0400 (EGR system) P0401 (EGR system (closed)) P0500 (Vehicle speed sensor) P107B, P107C, P107D (Fuel pressure sensor (for low pressure side)) P11EA, P11EC, P11ED, P11EE, P11EF, P219A, P219C, P219D, P219E, P219F (Air-fuel ratio imbalance)
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 800 rpm
2. Engine load	12% or higher
Catalyst monitor	Not executed

TYPICAL MALFUNCTION THRESHOLDS

P0171 and P0172: 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

HINT:

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

  Click here

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

1. Connect the GTS to the DLC3.
2. Turn the ignition switch to ON.
3. Turn the GTS on.
4. Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).
5. Turn the ignition switch off and wait for at least 30 seconds.
6. Turn the ignition switch to ON [A].
7. Turn the GTS on.
8. Start the engine and warm it up until the engine coolant temperature 75°C (167°F) or higher with all the accessories switched off [B].
9. 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.

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 (sensor 1) circuit.

  Click here

CAUTION / NOTICE / HINT

NOTICE:

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

HINT:

• Sensor 1 refers to the sensor closest to the engine assembly.
• Sensor 2 refers to the sensor farthest away from the engine assembly.
• A low air fuel ratio sensor (sensor 1) voltage could be caused by a rich air fuel mixture. Check for conditions that would cause the engine to run rich.
• A high air fuel ratio sensor (sensor 1) voltage could be caused by a lean air fuel mixture. Check for conditions that would cause the engine to run lean.
• Read Freeze Frame Data using the GTS. The ECM records vehicle and driving condition information as Freeze Frame Data the moment a DTC is stored. When troubleshooting, Freeze Frame Data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, if the air fuel ratio was lean or rich, and other data from the time the malfunction occurred.

PROCEDURE

1.	CHECK ANY OTHER DTCS OUTPUT (IN ADDITION TO DTC P017100, P017200, P117000 AND/OR P117B00)

(a) Read the DTCs.

Powertrain > Engine > Trouble Codes

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

HINT:

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

B

GO TO DTC CHART

A

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

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

(b) Enter the following menus.

Powertrain > Engine > Active Test

Active Test Display
Control the Injection Mode

Data List Display
Coolant Temperature
Injection Mode
Short FT B1S1
Long FT B1S1

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

OK:

GTS Display	Specified Condition
Total of Short FT B1S1 and Long FT B1S1	Between -19 and 19%

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

OK:

GTS Display	Specified Condition
Total of Short FT B1S1 and Long FT B1S1	Between -19 and 19%

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

B

GO TO STEP 4

C

GO TO STEP 11

D

GO TO STEP 12

A

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

(a) Has the vehicle run out of fuel in the past?

YES

DTC CAUSED BY RUNNING OUT OF FUEL

NO

CHECK FOR INTERMITTENT PROBLEMS

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

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

(b) Enter the following menus.

Powertrain > Engine > Data List

Tester Display
Engine Speed
Coolant Temperature
Fuel Pressure (High)
Injection Mode

(c) According to the display on the GTS, read the Data List.

Standard:

GTS Display	Condition	Specified Condition
Fuel Pressure (High)	Shift position: P A/C: Off Engine warmed up Engine Speed: 3000 rpm Injection Mode: Direct	2400 to 20000 kPag

NG

GO TO STEP 7

OK

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

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

(b) Enter the following menus.

Powertrain > Engine > Active Test

Active Test Display
Control the Injection Mode

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

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

HINT:

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

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

HINT:

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

Click here

B

REPLACE FUEL PRESSURE SENSOR (FOR HIGH PRESSURE SIDE)

C

GO TO STEP 8

D

REPLACE ECM

A

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

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

(b) Enter the following menus.

Powertrain > Engine > Active Test

Active Test Display
Control the Injection Mode

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

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

HINT:

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

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

HINT:

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

Click here

A

REPLACE DIRECT FUEL INJECTOR ASSEMBLY

B

CHECK FOR INTERMITTENT PROBLEMS

7.	CHECK MISFIRE COUNT OF DIRECT INJECTION

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

(b) Enter the following menus.

Powertrain > Engine > Active Test

Active Test Display
Control the Injection Mode

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

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

HINT:

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

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

HINT:

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

Click here

B

REPLACE DIRECT FUEL INJECTOR ASSEMBLY

A

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

Click here

HINT:

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

Click here

NEXT

9.

CLEAR DTC

(a) Clear the DTCs.

Powertrain > Engine > Clear DTCs

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

NEXT

10.	CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED

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

(b) Read the DTCs.

Powertrain > Engine > Trouble Codes

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

A

END

B

REPLACE ECM

11.	INSPECT DIRECT FUEL INJECTOR ASSEMBLY

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

Click here

HINT:

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

Click here

OK

REPLACE ECM

NG

REPLACE PORT FUEL INJECTOR ASSEMBLY

12.	CHECK PCV VALVE AND HOSE CONNECTIONS

(a) Check the PCV hose connections.

(b) Check the PCV valve.

Click here

OK:

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

NG

REPAIR OR REPLACE PCV VALVE OR HOSE

OK

13.	CHECK INTAKE SYSTEM

(a) Check the intake system for vacuum leaks.

Click here

OK:

No leaks in intake system.

HINT:

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

Click here

NG

REPAIR OR REPLACE INTAKE SYSTEM

OK

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

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

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

(c) Enter the following menus.

Powertrain > Engine > Active Test

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

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

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

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

HINT:

• The Control the Injection Volume for A/F Sensor operation lowers the fuel injection volume by 12.5% or increases the injection volume by 12.5%.
• The air fuel ratio sensor (sensor 1) has an output delay of a few seconds and the air fuel ratio sensor (sensor 2) has a maximum output delay of approximately 20 seconds.
• If the sensor output value does not change (almost no reaction) while performing the Active Test, the sensor may be malfunctioning.

Standard:

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

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

• Lean: During the Control the Injection Volume for A/F Sensor Active Test, the air fuel ratio sensor (sensor 1) output current (A/F (O2) Sensor Current B1S1) is consistently more than 0.037 mA, and the air fuel ratio sensor (sensor 2) output current (A/F (O2) Sensor Current B1S2) is consistently more than 0.33 mA.
• Rich: During the Control the Injection Volume for A/F Sensor Active Test, the air fuel ratio sensor (sensor 1) output current (A/F (O2) Sensor Current B1S1) is consistently below -0.075 mA, and the air fuel ratio sensor (sensor 2) output current (A/F (O2) Sensor Current B1S2) is consistently below -0.86 mA.
• Lean/Rich: During the Control the Injection Volume for A/F Sensor Active Test, the output current of the air fuel ratio sensor (sensor 1) or air fuel ratio sensor (sensor 2) alternate correctly.

HINT:

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

Click here

B

GO TO STEP 24

A

15.	READ VALUE USING GTS (COOLANT TEMPERATURE)

(a) Enter the following menus.

Powertrain > Engine > Data List

Tester Display
Coolant Temperature

(b) 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
	Warm engine	Between 75 and 100°C (167 and 212°F)

HINT:

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

Click here

NG

REPLACE ENGINE COOLANT TEMPERATURE SENSOR

OK

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

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

HINT:

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

(b) Enter the following menus.

Powertrain > Engine > Active Test

Active Test Display
Control the EGR Step Position

Data List Display
Engine Speed
Intake Manifold Absolute Pressure
Coolant Temperature

(c) Check the engine idling condition and Intake Manifold Absolute Pressure values in the Data List 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 and Engine Speed change in response to EGR step position.

Standard:

-	EGR Step Position (Active Test)
	0 Steps	0 to 30 Steps
Idling condition	Steady idling	Idling changes from steady to rough idling or engine stalls
Intake Manifold Absolute Pressure (Data List)	Intake Manifold Absolute Pressure value is 18 to 38 kPa(abs) (2.6 to 5.5 psi(abs)) (EGR valve is fully closed)	Intake Manifold Absolute Pressure value is at least +10 kPa (1.45 psi) higher than when EGR valve is fully closed

HINT:

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

OK

GO TO STEP 18

NG

17.	INSPECT EGR VALVE ASSEMBLY

(a) Remove the EGR valve assembly.

Click here

(b) 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 here

NG

REPLACE EGR VALVE ASSEMBLY

OK

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

(a) Start the engine.

(b) Enter the following menus.

Powertrain > Engine > Data List

Tester Display
Engine Speed
Mass Air Flow Sensor
Coolant Temperature

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

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

Standard:

GTS Display	Condition	Specified Condition
Mass Air Flow Sensor	Engine warmed up Shift position: P A/C: Off Engine Speed: 3000 rpm	Between 8.0 and 13.0 gm/sec

NG

GO TO STEP 31

OK

19.	CHECK FUEL PRESSURE (FOR LOW PRESSURE SIDE)

Click here

NG

GO TO STEP 23

OK

20.	CHECK FOR EXHAUST GAS LEAK

(a) Check for exhaust gas leaks.

OK:

No gas leaks.

HINT:

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

Click here

NG

REPAIR OR REPLACE EXHAUST SYSTEM

OK

21.	INSPECT SPARK PLUG

Click here

HINT:

Perform "Inspection After Repair" after replacing the spark plug.

Click here

NG

REPLACE SPARK PLUG

OK

22.	CHECK FOR SPARK (SPARK TEST)

(a) Perform a spark test.

Click here

HINT:

• If the result of the spark test is normal, proceed to the next step.
• Perform "Inspection After Repair" after replacing the spark plug or ignition coil assembly.

  Click here

NEXT

GO TO STEP 31

23.	CHECK FUEL LINE

(a) Check the fuel lines for leaks or blockage.

HINT:

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

Click here

OK

REPLACE FUEL PUMP (FOR LOW PRESSURE SIDE) for 2WD: Click here for AWD: Click here

NG

REPAIR OR REPLACE FUEL SYSTEM

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

Click here

HINT:

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

Click here

NG

REPLACE AIR FUEL RATIO SENSOR (SENSOR 1)

OK

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

*a	Front view of wire harness connector (to Air Fuel Ratio Sensor (Sensor 1))

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

(b) Turn the ignition switch to ON.

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

Standard Voltage:

Tester Connection	Condition	Specified Condition
C56-2 (+B) - Body ground	Ignition switch ON	11 to 14 V

NG

GO TO STEP 34

OK

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

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

(b) Disconnect the ECM connector.

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

Standard Resistance:

Tester Connection	Condition	Specified Condition
C56-1 (HA1A) - C76-9 (HA1A)	Always	Below 1 Ω
C56-3 (A1A+) - C76-95 (A1A+)	Always	Below 1 Ω
C56-4 (A1A-) - C76-94 (A1A-)	Always	Below 1 Ω
C56-1 (HA1A) or C76-9 (HA1A) - Body ground and other terminals	Always	10 kΩ or higher
C56-3 (A1A+) or C76-95 (A1A+) - Body ground and other terminals	Always	10 kΩ or higher
C56-4 (A1A-) or C76-94 (A1A-) - Body ground and other terminals	Always	10 kΩ or higher

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

OK

27.	REPLACE AIR FUEL RATIO SENSOR (SENSOR 1)

Click here

HINT:

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

Click here

NEXT

28.

CLEAR DTC

(a) Clear the DTCs.

Powertrain > Engine > Clear DTCs

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

NEXT

29.	CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED

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

(b) Read the DTCs.

Powertrain > Engine > Trouble Codes

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

A

END

B

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

(a) Start the engine.

(b) Enter the following menus.

Powertrain > Engine > Data List

Tester Display
Engine Speed
Mass Air Flow Sensor
Coolant Temperature

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

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

Standard:

GTS Display	Condition	Specified Condition
Mass Air Flow Sensor	Engine warmed up Shift position: P A/C: Off Engine Speed: 3000 rpm	Between 8.0 and 13.0 gm/sec

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

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

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HINT:

Repair any problems.

NEXT

32.

CLEAR DTC

(a) Clear the DTCs.

Powertrain > Engine > Clear DTCs

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

NEXT

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

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

(b) Read the DTCs.

Powertrain > Engine > Trouble Codes

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

A

END

B

GO TO STEP 38

34.	INSPECT EFI-MAIN NO. 2 RELAY

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NG

REPLACE EFI-MAIN NO. 2 RELAY

OK

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

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

(a) Remove the EFI-MAIN NO. 2 relay from the No. 1 engine room relay block assembly.

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

Standard Voltage:

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

NG

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

OK

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

(a) Remove the EFI-MAIN NO. 2 relay from the No. 1 engine room relay block assembly.

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

Standard Resistance:

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

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

OK

37.	CHECK HARNESS AND CONNECTOR (EFI-MAIN NO. 2 RELAY - AIR FUEL RATIO SENSOR (SENSOR 1))

(a) Remove the EFI-MAIN NO. 2 relay from the No. 1 engine room relay block assembly.

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

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

Standard Resistance:

Tester Connection	Condition	Specified Condition
3 (EFI-MAIN NO. 2 relay) - C56-2 (+B)	Always	Below 1 Ω
3 (EFI-MAIN NO. 2 relay) or C56-2 (+B) - Body ground and other terminals	Always	10 kΩ or higher

OK

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

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

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

(a) Disconnect the mass air flow meter sub-assembly connector.

(b) Disconnect the ECM connector.

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

Standard Resistance:

Tester Connection	Condition	Specified Condition
C26-3 (VCC) - C76-78 (VCVG)	Always	Below 1 Ω
C26-1 (FG) - C76-101 (VG)	Always	Below 1 Ω
C26-2 (E2G) - C76-79 (E2G)	Always	Below 1 Ω
C26-3 (VCC) or C76-78 (VCVG) - Body ground and other terminals	Always	10 kΩ or higher
C26-1 (FG) or C76-101 (VG) - Body ground and other terminals	Always	10 kΩ or higher
C26-2 (E2G) or C76-79 (E2G) - Body ground and other terminals	Always	10 kΩ or higher

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

OK

39.	INSPECT MASS AIR FLOW METER SUB-ASSEMBLY

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NEXT

40.

CLEAR DTC

(a) Clear the DTCs.

Powertrain > Engine > Clear DTCs

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

NEXT

41.	CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED

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

(b) Read the DTCs.

Powertrain > Engine > Trouble Codes

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

A

END

B

REPLACE ECM

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