DTC P0300-00: Random/Multiple Cylinder Misfire Detected; DTC P0300-27: Random/Multiple Cylinder Misfire Detected (Emission) Signal Rate of Change Above Threshold; DTC P0300-85: Random / Multiple Cylinder Misfire Detected (Over Temperature) Signal Above Allowable Range; DTC P0301-00: Cylinder 1 Misfire Detected; DTC P0302-00: Cylinder 2 Misfire Detected; DTC P0303-00: Cylinder 3 Misfire Detected; DTC P0304-00: Cylinder 4 Misfire Detected [11/2015 - 12/2018]: Procedure

CHECK ANY OTHER DTCS OUTPUT (IN ADDITION TO MISFIRE DTCS)

Connect the Techstream to the DLC3.
Turn the power switch on (IG).
Turn the Techstream on.
Enter the following menus: Powertrain / Engine / Trouble Codes.

Read the DTCs.

Powertrain > Engine > Trouble Codes

Result

Result	Proceed to
DTC P0300-00, P0300-27, P0300-85, P0301-00, P0302-00, P0303-00 and/or P0304-00 are output	A
DTC P0300-00, P0300-27, P0300-85, P0301-00, P0302-00, P0303-00 and/or P0304-00 and other DTCs are output	B

HINT:

If any DTCs other than P0300-00, P0300-27, P0300-85, P0301-00, P0302-00, P0303-00 and/or P0304-00 are output, troubleshoot those DTCs first.

Result:

GO TO DTC CHART. Refer to DIAGNOSTIC TROUBLE CODE CHART [11/2015 - 08/2016] , or refer to DIAGNOSTIC TROUBLE CODE CHART [08/2016 - 11/2017] , or refer to DIAGNOSTIC TROUBLE CODE CHART [11/2017 - 12/2018]

Result:

See step 2

CHECK PCV HOSE CONNECTIONS

Check the PCV hose connections.

HINT:

Refer to COMPONENTS [11/2015 - ]

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

Result

Proceed to
OK
NG

Result:

REPAIR OR REPLACE PCV HOSE

Result:

See step 3

READ VALUE USING TECHSTREAM (MISFIRE RPM AND MISFIRE LOAD)

Connect the Techstream to the DLC3.
Turn the power switch on (IG).
Turn the Techstream on.

Enter the following menus: Powertrain / Engine / Data List / Misfire RPM and Misfire Load.

Powertrain > Engine > Data List

Tester Display
Misfire RPM
Misfire Load

Read and note the Misfire RPM and Misfire Load values.

HINT:

The Misfire RPM and Misfire Load values indicate the vehicle conditions under which the misfire occurred.

Result

Proceed to
NEXT

Result:

See step 4

READ VALUE USING TECHSTREAM (MISFIRE COUNT)

Connect the Techstream to the DLC3.
Turn the power switch on (IG).
Turn the Techstream on.

Put the engine in Inspection Mode (Maintenance Mode).

Powertrain > Hybrid Control > Utility

Tester Display
Inspection Mode

Enter the following menus: Powertrain / Engine / Data List / Misfire Count Cylinder #1 to Misfire Count Cylinder #4.

Powertrain > Engine > Data List

Tester Display
Misfire Count Cylinder #1
Misfire Count Cylinder #2
Misfire Count Cylinder #3
Misfire Count Cylinder #4

Start the engine and allow the engine to idle.

Read each value for Misfire Count Cylinder #1 to Misfire Count Cylinder #4 displayed on the Techstream. If no misfire counts occur in any cylinders, perform procedure [A] and [B] and then check the misfire counts again.

Drive the vehicle with the Misfire RPM and Misfire Load noted in the "Read Value Using Techstream (Misfire RPM and Misfire Load)" procedures above [A].
Read the Misfire Count Cylinder #1 to Misfire Count Cylinder #4 or DTCs displayed on the Techstream [B].

Result

Result	Proceed to
Most misfires occur in only 1 or 2 cylinders	A
3 cylinders or more have equal misfire counts	B

HINT:

If it is difficult to reproduce misfires for each cylinder, check the Data List item called Misfire Margin. Try to find vehicle driving conditions that lower the Misfire Margin value. Values above 30% are considered normal.
If the freeze frame data record of the engine coolant temperature is less than 75°C (167°F), the misfire may be detected only when the engine is cold.

Result:

See step 18

Result:

See step 5

INSPECT SPARK PLUG

Inspect the spark plug of the misfiring cylinder.

Refer to PROCEDURE - Step 3

Result

Proceed to
OK
NG

Result:

REPLACE SPARK PLUG

Refer to REMOVAL [11/2015 - ]

HINT:

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

Refer to INITIALIZATION [11/2015 - ]

Result:

See step 6

CHECK FOR SPARKS (SPARK TEST)

Perform a spark test.

Refer to PROCEDURE - Step 1

HINT:

If the result of the spark test is normal, proceed to the next step.
Perform "Inspection After Repair" after repairing or replacing the ignition system.
Refer to INITIALIZATION [11/2015 - ]

Result

Proceed to
NEXT

Result:

See step 7

CHECK CYLINDER COMPRESSION PRESSURE

Measure the cylinder compression pressure of the misfiring cylinder.

Refer to PROCEDURE - Step 9 [11/2015 - 08/2016] , or refer to PROCEDURE - Step 9 [08/2016 - 08/2019]

Result

Proceed to
OK
NG

Result:

CHECK ENGINE TO DETERMINE CAUSE OF LOW COMPRESSION

HINT:

Perform "Inspection After Repair" after repairing or replacing the engine assembly.

Refer to INITIALIZATION [11/2015 - ]

Result:

See step 8

CHECK TERMINAL VOLTAGE (#10, #20, #30 AND/OR #40)

Disconnect the ECM 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
C31-98 (#10) - C31-57 (E01)	Power switch on (IG)	11 to 14 V
C31-95 (#20) - C31-57 (E01)	Power switch on (IG)	11 to 14 V
C31-96 (#30) - C31-57 (E01)	Power switch on (IG)	11 to 14 V
C31-97 (#40) - C31-57 (E01)	Power switch on (IG)	11 to 14 V

Result

Proceed to
OK
NG

Result:

CHECK FUEL INJECTOR CIRCUIT. Refer to Fuel Injector Circuit [11/2015 - ]

Result:

See step 9

CHECK FUEL INJECTOR ASSEMBLY OF MISFIRING CYLINDER

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

Refer to INSPECTION [11/2015 - 12/2018]

Result

Proceed to
OK
NG

Result:

REPLACE FUEL INJECTOR ASSEMBLY

Refer to REMOVAL [11/2015 - 12/2018]

HINT:

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

Refer to INITIALIZATION [11/2015 - ]

Result:

See step 10

CHECK INTAKE SYSTEM

Check the intake system for vacuum leaks.

Refer to ON-VEHICLE INSPECTION [11/2015 - ]

No leaks from intake system.

Result

Proceed to
OK
NG

Result:

REPAIR OR REPLACE INTAKE SYSTEM

HINT:

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

Refer to INITIALIZATION [11/2015 - ]

Result:

See step 11

CHECK FUEL PRESSURE

Check the fuel pressure.

Refer to PROCEDURE - Step 2

Result

Proceed to
OK
NG

Result:

See step 41

Result:

See step 12

READ VALUE USING TECHSTREAM (COOLANT TEMPERATURE)

Connect the Techstream to the DLC3.
Turn the power switch on (IG).
Turn the Techstream 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

Techstream 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)

Result

Proceed to
OK
NG

Result:

REPLACE ENGINE COOLANT TEMPERATURE SENSOR

Refer to REMOVAL [11/2015 - ]

HINT:

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

Refer to INITIALIZATION [11/2015 - ]

Result:

See step 13

READ VALUE USING TECHSTREAM (INTAKE AIR TEMPERATURE)

Connect the Techstream to the DLC3.
Turn the power switch on (IG).
Turn the Techstream on.

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

Powertrain > Engine > Data List

Tester Display
Intake Air Temperature

According to the display on the Techstream, read the Data List.

Same as actual intake air temperature.

Result

Proceed to
OK
NG

Result:

REPLACE MASS AIR FLOW METER SUB-ASSEMBLY

Refer to REMOVAL [11/2015 - ]

HINT:

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

Refer to INITIALIZATION [11/2015 - ]

Result:

See step 14

READ VALUE USING TECHSTREAM (MASS AIR FLOW SENSOR)

Connect the Techstream to the DLC3.
Turn the power switch on (IG).
Turn the Techstream on.

Put the engine in Inspection Mode (Maintenance Mode).

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 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

Techstream 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

Result	Proceed to
The value of Mass Air Flow Sensor is between 4.5 gm/sec and 8.5 gm/sec	OK
Other than above	NG

Result:

See step 34

Result:

See step 15

CHECK VALVE TIMING (CHECK FOR LOOSE TIMING CHAIN AND JUMPED TEETH)

Remove the cylinder head cover sub-assembly.

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

*a	39.5°	*b	Timing Mark
*c	"0" Timing Mark	*d	Groove

Turn the crankshaft pulley and align its groove with the "0" timing mark of the timing chain or belt cover sub-assembly.

Check that the timing marks of the camshaft timing gear assembly and camshaft timing sprocket are at the positions shown in the illustration.

HINT:

If the timing marks are not as shown, turn the crankshaft one revolution clockwise.

Timing marks on camshaft timing gear assembly and camshaft timing sprocket are at the positions shown in the illustration.

HINT:

If the result is not as specified, check for mechanical malfunctions that may have affected the valve timing, such as a jumped tooth or stretching of the timing chain.

Result

Proceed to
OK
NG

Result:

See step 31

Result:

See step 16

PERFORM ACTIVE TEST USING TECHSTREAM (CONTROL THE EGR STEP POSITION)

Connect the Techstream to the DLC3.
Turn the power switch on (IG).
Turn the Techstream on.

Put the engine in Inspection Mode (Maintenance Mode).

Powertrain > Hybrid Control > Utility

Tester Display
Inspection Mode

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, EGR Step Position and Engine Independent.

Powertrain > Engine > Active Test

Active Test Display
Control the EGR Step Position

Data List Display
Intake Manifold Absolute Pressure
EGR Step Position
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:

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.

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

Result	Proceed to
The value of Intake Manifold Absolute Pressure increases by 10 kPa (abs) or more, compared to when the EGR valve was fully closed (0 step)	OK
Other than above	NG

HINT:

10 kPa = 1.45 psi

Result:

See step 34

Result:

See step 17

INSPECT EGR VALVE ASSEMBLY

Remove the EGR valve assembly.
HINT:

Refer to REMOVAL [11/2015 - 12/2018]

Check if the EGR valve is stuck open.

EGR valve is tightly closed.

Result

Proceed to
OK
NG

Result:

See step 34

Result:

REPLACE EGR VALVE ASSEMBLY

Refer to REMOVAL [11/2015 - 12/2018]

HINT:

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

Refer to INITIALIZATION [11/2015 - ]

CHECK INTAKE SYSTEM

Check the intake system for vacuum leaks.

Refer to ON-VEHICLE INSPECTION [11/2015 - ]

No leaks from intake system.

Result

Proceed to
OK
NG

Result:

REPAIR OR REPLACE INTAKE SYSTEM

HINT:

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

Refer to INITIALIZATION [11/2015 - ]

Result:

See step 19

CHECK FUEL PRESSURE

Check the fuel pressure.

Refer to PROCEDURE - Step 2

Result

Proceed to
OK
NG

Result:

See step 41

Result:

See step 20

READ VALUE USING TECHSTREAM (COOLANT TEMPERATURE)

Connect the Techstream to the DLC3.
Turn the power switch on (IG).
Turn the Techstream 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

Techstream 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)

Result

Proceed to
OK
NG

Result:

REPLACE ENGINE COOLANT TEMPERATURE SENSOR

Refer to REMOVAL [11/2015 - ]

HINT:

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

Refer to INITIALIZATION [11/2015 - ]

Result:

See step 21

READ VALUE USING TECHSTREAM (INTAKE AIR TEMPERATURE)

Connect the Techstream to the DLC3.
Turn the power switch on (IG).
Turn the Techstream on.

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

Powertrain > Engine > Data List

Tester Display
Intake Air Temperature

According to the display on the Techstream, read the Data List.

Same as actual intake air temperature.

Result

Proceed to
OK
NG

Result:

REPLACE MASS AIR FLOW METER SUB-ASSEMBLY

Refer to REMOVAL [11/2015 - ]

HINT:

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

Refer to INITIALIZATION [11/2015 - ]

Result:

See step 22

READ VALUE USING TECHSTREAM (MASS AIR FLOW SENSOR)

Connect the Techstream to the DLC3.
Turn the power switch on (IG).
Turn the Techstream on.

Put the engine in Inspection Mode (Maintenance Mode).

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 is 75°C (167°F) or higher.

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

HINT:

Standard

Techstream 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

Result	Proceed to
The value of Mass Air Flow Sensor is between 4.5 gm/sec and 8.5 gm/sec	OK
Other than above	NG

Result:

See step 34

Result:

See step 23

CHECK VALVE TIMING (CHECK FOR LOOSE TIMING CHAIN AND JUMPED TEETH)

Remove the cylinder head cover sub-assembly.

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

*a	39.5°	*b	Timing Mark
*c	"0" Timing Mark	*d	Groove

Turn the crankshaft pulley and align its groove with the "0" timing mark of the timing chain or belt cover sub-assembly.

Check that the timing marks of the camshaft timing gear assembly and camshaft timing sprocket are at the positions shown in the illustration.

HINT:

If the timing marks are not as shown, turn the crankshaft one revolution clockwise.

Timing marks on camshaft timing gear assembly and camshaft timing sprocket are at the positions shown in the illustration.

HINT:

If the result is not as specified, check for mechanical malfunctions that may have affected the valve timing, such as a jumped tooth or stretching of the timing chain.

Result

Proceed to
OK
NG

Result:

See step 31

Result:

See step 24

PERFORM ACTIVE TEST USING TECHSTREAM (CONTROL THE EGR STEP POSITION)

Connect the Techstream to the DLC3.
Turn the power switch on (IG).
Turn the Techstream on.

Put the engine in Inspection Mode (Maintenance Mode).

Powertrain > Hybrid Control > Utility

Tester Display
Inspection Mode

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, EGR Step Position and Engine Independent.

Powertrain > Engine > Active Test

Active Test Display
Control the EGR Step Position

Data List Display
Intake Manifold Absolute Pressure
EGR Step Position
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:

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.

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

Result	Proceed to
The value of Intake Manifold Absolute Pressure increases by 10 kPa (abs) or more, compared to when the EGR valve was fully closed (0 step)	OK
Other than above	NG

HINT:

10 kPa = 1.45 psi

Result:

See step 26

Result:

See step 25

INSPECT EGR VALVE ASSEMBLY

Remove the EGR valve assembly.
HINT:

Refer to REMOVAL [11/2015 - 12/2018]

Check if the EGR valve is stuck open.

EGR valve is tightly closed.

Result

Proceed to
OK
NG

Result:

REPLACE EGR VALVE ASSEMBLY

Refer to REMOVAL [11/2015 - 12/2018]

HINT:

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

Refer to INITIALIZATION [11/2015 - ]

Result:

See step 26

INSPECT SPARK PLUG

Inspect the spark plug of the misfiring cylinder.

Refer to PROCEDURE - Step 3

Result

Proceed to
OK
NG

Result:

REPLACE SPARK PLUG

Refer to REMOVAL [11/2015 - ]

HINT:

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

Refer to INITIALIZATION [11/2015 - ]

Result:

See step 27

CHECK FOR SPARKS (SPARK TEST)

Perform a spark test.

Refer to PROCEDURE - Step 1

HINT:

If the result of the spark test is normal, proceed to the next step.
Perform "Inspection After Repair" after repairing or replacing the ignition system.
Refer to INITIALIZATION [11/2015 - ]

Result

Proceed to
NEXT

Result:

See step 28

CHECK CYLINDER COMPRESSION PRESSURE

Measure the cylinder compression pressure of the misfiring cylinder.

Refer to PROCEDURE - Step 9 [11/2015 - 08/2016] , or refer to PROCEDURE - Step 9 [08/2016 - 08/2019]

Result

Proceed to
OK
NG

Result:

CHECK ENGINE TO DETERMINE CAUSE OF LOW COMPRESSION

HINT:

Perform "Inspection After Repair" after repairing or replacing the engine assembly.

Refer to INITIALIZATION [11/2015 - ]

Result:

See step 29

CHECK TERMINAL VOLTAGE (#10, #20, #30 AND/OR #40)

Disconnect the ECM 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
C31-98 (#10) - C31-57 (E01)	Power switch on (IG)	11 to 14 V
C31-95 (#20) - C31-57 (E01)	Power switch on (IG)	11 to 14 V
C31-96 (#30) - C31-57 (E01)	Power switch on (IG)	11 to 14 V
C31-97 (#40) - C31-57 (E01)	Power switch on (IG)	11 to 14 V

Result

Proceed to
OK
NG

Result:

CHECK FUEL INJECTOR CIRCUIT. Refer to Fuel Injector Circuit [11/2015 - ]

Result:

See step 30

CHECK FUEL INJECTOR ASSEMBLY

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

Refer to INSPECTION [11/2015 - 12/2018]

Result

Proceed to
OK
NG

Result:

See step 34

Result:

REPLACE FUEL INJECTOR ASSEMBLY

Refer to REMOVAL [11/2015 - 12/2018]

HINT:

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

Refer to INITIALIZATION [11/2015 - ]

CHECK ENGINE MECHANICAL SYSTEM

Check for mechanical malfunctions that affect the valve timing, such as a jumped tooth or stretching of the timing chain.

Result

Proceed to
OK
NG

Result:

REPAIR OR REPLACE MALFUNCTIONING PARTS, COMPONENT AND AREA

HINT:

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

Refer to INITIALIZATION [11/2015 - ]

Result:

See step 32

CLEAR DTC

Connect the Techstream to the DLC3.
Turn the power switch on (IG).
Turn the Techstream on.
Clear the DTCs.
Powertrain > Engine > Clear DTCs

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

Result

Proceed to
NEXT

Result:

See step 33

CHECK WHETHER DTC OUTPUT RECURS (MISFIRE DTCS)

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

Enter the following menus: Powertrain / Engine / Utility / All Readiness.

Powertrain > Engine > Utility

Tester Display
All Readiness

Input the DTC: P0300-00, P0300-27, P0300-85, P0301-00, P0302-00, P0303-00 or P0304-00.

Check the DTC judgment result.

Result

Result	Proceed to
NORMAL (DTCs are not output)	A
ABNORMAL (DTC P0300-00, P0300-27, P0300-85, P0301-00, P0302-00, P0303-00 and/or P0304-00 is output)	B

Result:

CHECK FOR INTERMITTENT PROBLEMS. Refer to CHECK FOR INTERMITTENT PROBLEMS [11/2015 - ]

Result:

See step 34

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.

HINT:

Refer to ELECTRONIC CIRCUIT INSPECTION PROCEDURE [11/2015 - ]
Repair any problems.

Result

Proceed to
NEXT

Result:

See step 35

CLEAR DTC

Connect the Techstream to the DLC3.
Turn the power switch on (IG).
Turn the Techstream on.
Clear the DTCs.
Powertrain > Engine > Clear DTCs

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

Result

Proceed to
NEXT

Result:

See step 36

CHECK WHETHER DTC OUTPUT RECURS (MISFIRE DTCS)

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

Enter the following menus: Powertrain / Engine / Utility / All Readiness.

Powertrain > Engine > Utility

Tester Display
All Readiness

Input the DTC: P0300-00, P0300-27, P0300-85, P0301-00, P0302-00, P0303-00 or P0304-00.

Check the DTC judgment result.

Result

Result	Proceed to
NORMAL (DTCs are not output)	A
ABNORMAL (DTC P0300-00, P0300-27, P0300-85, P0301-00, P0302-00, P0303-00 and/or P0304-00 is output)	B

Result:

END

Result:

See step 37

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
C5-3 (VG) - C31-137 (VG)	Always	Below 1 Ω
C5-2 (E2G) - C31-104 (E2G)	Always	Below 1 Ω
C5-3 (VG) or C31-137 (VG) - Body ground and other terminals	Always	10 kΩ or higher

Result

Proceed to
OK
NG

Result:

REPAIR OR REPLACE HARNESS OR CONNECTOR

Result:

See step 38

REPLACE MASS AIR FLOW METER SUB-ASSEMBLY

Replace the mass air flow meter sub-assembly.

HINT:

Refer to REMOVAL [11/2015 - ]
If the results of the inspections performed in steps 14 and 22 (READ VALUE USING TECHSTREAM (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.
Refer to INITIALIZATION [11/2015 - ]

Result

Proceed to
NEXT

Result:

See step 39

CLEAR DTC

Connect the Techstream to the DLC3.
Turn the power switch on (IG).
Turn the Techstream on.
Clear the DTCs.
Powertrain > Engine > Clear DTCs

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

Result

Proceed to
NEXT

Result:

See step 40

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 / Utility / All Readiness.

Powertrain > Engine > Utility

Tester Display
All Readiness

Input the DTC: P0300-00, P0300-27, P0300-85, P0301-00, P0302-00, P0303-00 or P0304-00.

Check the DTC judgment result.

Result

Result	Proceed to
NORMAL (DTCs are not output)	A
ABNORMAL (DTC P0300-00, P0300-27, P0300-85, P0301-00, P0302-00, P0303-00 and/or P0304-00 is output)	B

Result:

END

Result:

REPLACE ECM. Refer to REMOVAL [11/2015 - 12/2018]

INSPECT FUEL PUMP

Inspect the fuel pump.

Refer to INSPECTION [11/2015 - 12/2018]

Result

Proceed to
OK
NG

Result:

REPAIR OR REPLACE FUEL LINE

Result:

REPLACE FUEL PUMP

Refer to REMOVAL [11/2015 - 12/2018]

HINT:

Perform "Inspection After Repair" after replacing the fuel pump.

Refer to INITIALIZATION [11/2015 - ]