- A misfire occurs that may damage the three-way catalytic converter (MIL blinks when detect immediately).
- An emission deterioration misfire occurs (MIL illuminates).
| Last Modified: 04-05-2023 | 6.11:8.1.0 | Doc ID: RM100000000VIA0 |
| Model Year Start: 2016 | Model: Sienna | Prod Date Range: [12/2015 - 08/2016] |
| Title: 2GR-FE (ENGINE CONTROL): SFI SYSTEM: P0300-P0306; Random / Multiple Cylinder Misfire Detected; 2016 MY Sienna [12/2015 - 08/2016] | ||
|
DTC |
P0300 |
Random / Multiple Cylinder Misfire Detected |
|
DTC |
P0301 |
Cylinder 1 Misfire Detected |
|
DTC |
P0302 |
Cylinder 2 Misfire Detected |
|
DTC |
P0303 |
Cylinder 3 Misfire Detected |
|
DTC |
P0304 |
Cylinder 4 Misfire Detected |
|
DTC |
P0305 |
Cylinder 5 Misfire Detected |
|
DTC |
P0306 |
Cylinder 6 Misfire Detected |
DESCRIPTION
When the engine misfires, high concentrations of hydrocarbons (HC) enter the exhaust gas. Extremely high hydrocarbon concentration levels can cause an increase in exhaust emission levels. Extremely high concentrations of hydrocarbons can also cause increases in the three-way catalytic converter temperature, which may cause damage to the three-way catalytic converter. To prevent this increase in emissions and to limit the possibility of thermal damage, the ECM monitors the misfire count. When the temperature of the three-way catalytic converter reaches the point of thermal degradation, the ECM blinks the MIL. To monitor misfires, the ECM uses both the camshaft position sensor and the crankshaft position sensor. The camshaft position sensor is used to identify any misfiring cylinders and the crankshaft position sensor is used to measure variations in the crankshaft rotation speed. Misfires are counted when the crankshaft rotation speed variations exceed predetermined thresholds. If the misfire count exceeds the threshold levels, and could cause emission control system performance deterioration, the ECM illuminates the MIL and stores a DTC.
|
DTC No. |
DTC Detection Condition |
Trouble Area |
|---|---|---|
|
P0300 |
Simultaneous misfiring of several cylinders occurs and one of the following conditions is met (2 trip detection logic): |
|
|
P0301 P0302 P0303 P0304 P0305 P0306 |
Misfiring of a specific cylinder occurs and one of the following conditions is met (2 trip detection logic):
|
When DTCs for misfiring cylinders are stored, but DTC P0300 is not stored, it indicates that misfires have been detected in different cylinders at different times. DTC P0300 is only stored when several misfiring cylinders are detected at the same time.
MONITOR DESCRIPTION
The ECM illuminates the MIL and stores a DTC when either one of the following conditions, which could cause emission deterioration, is detected (2 trip detection logic).
- Within the first 1000 crankshaft revolutions of the engine starting, an excessive misfiring rate (approximately 10 to 50 misfires per 1000 crankshaft revolutions) occurs once.
- An excessive misfiring rate (approximately 10 to 50 misfires per 1000 crankshaft revolutions) occurs a total of 4 times.
The ECM flashes the MIL (immediate detection logic) and stores a DTC (2 trip detection logic) when either one of the following conditions, which could cause the three-way catalytic converter damage, is detected.
- At a high engine speed, a catalyst damage misfire, which is monitored every 200 crankshaft revolutions, occurs once.
- At a normal engine speed, a catalyst damage misfire, which is monitored every 200 crankshaft revolutions, occurs 3 times.
HINT:
If a catalyst damage misfire occurs, the ECM informs the driver by flashing the MIL.
Misfire Monitor for Mexico Models
The ECM illuminates the MIL and stores a DTC when either one of the following conditions, which could cause emission deterioration, is detected (2 trip detection logic).
- Within the first 1000 crankshaft revolutions of the engine starting, an excessive misfiring rate (approximately 332 misfires per 1000 crankshaft revolutions) occurs once.
- An excessive misfiring rate (approximately 166 misfires per 1000 crankshaft revolutions) occurs a total of 4 times.
The ECM flashes the MIL and stores a DTC when the following condition, which could cause the three-way catalytic converter damage, is detected (2 trip detection logic).
- A catalyst damage misfire, which is monitored every 200 crankshaft revolutions, occurs 3 times.
MONITOR STRATEGY
|
Related DTCs |
P0300: Multiple cylinder misfire P0301: Cylinder 1 misfire P0302: Cylinder 2 misfire P0303: Cylinder 3 misfire P0304: Cylinder 4 misfire P0305: Cylinder 5 misfire P0306: Cylinder 6 misfire |
|
Required Sensors/Components (Main) |
Crankshaft position sensor Camshaft position sensor |
|
Required Sensors/Components (Related) |
Engine coolant temperature Intake air temperature sensor Mass air flow meter |
|
Frequency of Operation |
Continuous |
|
Duration |
1000 crankshaft revolutions (soon after engine is started: 1 time, other 4 times) (Emissions-related misfire) 200 crankshaft revolutions (1 or 3 times) (Catalyst-damaging misfire) |
|
MIL Operation |
2 driving cycles: Emissions-related misfire MIL flashes immediately: Catalyst-damaging misfire |
|
Sequence of Operation |
None |
TYPICAL ENABLING CONDITIONS
Misfire
|
Monitor runs whenever following DTCs not stored |
P0016, P0018 (VVT system bank 1, 2 - misalignment) P0017, P0019 (Exhaust VVT System bank 1, 2 - Misalignment) P0102, P0103 (Mass air flow meter) P0112, P0113 (Intake air temperature sensor) P0115, P0117, P0118 (Engine coolant temperature sensor) P0120, P0121, P0122, P0123, P0220, P0222, P0223, P2135 (Throttle position sensor) P0125 (Insufficient coolant temperature for closed loop fuel control) P0327, P0328, P0332, P0333 (Knock sensor) P0335 (Crankshaft position sensor) P0340 (VVT sensor) P0351, P0352, P0353, P0354, P0355, P0356 (Igniter) P0500 (Vehicle Speed Sensor) P0705 (Shift lever position switch) |
|
Battery voltage |
8 V or higher |
|
VVT system |
Not operated by scan tool |
|
Engine speed |
450 rpm or more, and 6400 rpm or less |
|
Either of the following conditions is met |
Condition (a) or (b) |
|
(a) Engine coolant temperature at engine start |
More than -7°C (19°F) |
|
(b) Engine coolant temperature |
More than 20°C (68°F) |
|
Fuel cut |
OFF |
Monitor Period of Emission-Related-Misfire
|
First 1000 revolutions after engine start, or Check Mode |
Crankshaft 1000 revolutions |
|
Except above |
Crankshaft 1000 revolutions x 4 |
Monitor Period of Catalyst-Damaged-Misfire (MIL blinks)
|
All of the following conditions 1, 2, and 3 are met |
Crankshaft 200 revolutions x 3 |
|
Except above (MIL blinks immediately) |
Crankshaft 200 revolutions |
|
1. Driving cycles |
1st |
|
2. Check mode |
OFF |
|
3. Engine speed |
Less than 2400 rpm |
|
4. Intake air amount per revolution |
Less than 1.3 g/rev |
FOR MEXICO MODELS
Misfire
|
Monitor runs whenever following DTCs are not present |
P0016, P0018 (VVT system bank 1, 2 - misalignment) P0017, P0019 (Exhaust VVT system bank 1, 2 - misalignment) P0102, P0103 (Mass air flow meter) P0112, P0113 (Intake air temperature sensor) P0115, P0117, P0118 (Engine coolant temperature sensor) P0120, P0121, P0122, P0123, P0220, P0222, P0223, P2135 (Throttle position sensor) P0125 (Insufficient engine coolant temperature for closed loop) P0327, P0328, P0332, P0333 (Knock sensor) P0335 (Crankshaft position sensor) P0340 (VVT sensor) P0351, P0352, P0353, P0354, P0355, P0356 (Igniter) P0500 (Vehicle speed sensor) P0705 (Shift lever position switch) |
|
Battery voltage |
8 V or higher |
|
VVT system |
Not operated by scan tool |
|
Engine speed |
450 to 6500 rpm |
|
Either of the following conditions is met: |
Condition (a) or (b) |
|
(a) Engine coolant temperature at engine start |
More than -7°C (19°F) |
|
(b) Engine coolant temperature |
More than 20°C (68°F) |
|
Fuel cut |
OFF |
Monitor Period of Emission-Related-Misfire
|
First 1000 revolutions after engine start, or check mode |
Crankshaft 1000 revolutions |
|
Except above |
Crankshaft 1000 revolutions x 4 |
Monitor Period of Catalyst-Damage-Misfire (MIL Blinks)
|
All of the following conditions 1 and 2 are met: |
Crankshaft 200 revolutions |
|
1. Driving cycle |
1st |
|
2. Check mode |
OFF |
|
Except above (MIL blinks immediately) |
Crankshaft 200 revolutions x 3 |
TYPICAL MALFUNCTION THRESHOLDS
Monitor Period of Emission-Related-Misfire
|
Misfire rate |
1% or more |
Monitor Period of Catalyst-Damaged-Misfire (MIL Blinks)
|
Number of misfire per 200 revolutions |
94 or more (varies with intake air amount and rpm) |
FOR MEXICO MODELS
Monitor Period of Emission-Related-Misfire
|
Misfire rate (for Mexico model) |
33.2% or more: for 1st 1000 revolutions 16.6% or more: after 1st 1000 revolutions |
Monitor Period of Catalyst-Damage-Misfire (MIL Blinks)
|
Number of misfire per 200 revolutions |
94 or more (varies with intake air amount and engine speed) |
|
Paired cylinders misfire (MIL blinks immediately) |
Detected |
CONFIRMATION DRIVING PATTERN
- Connect the Techstream to the DLC3.
- Turn the ignition switch to ON.
- Turn the Techstream on.
- Record the DTC(s) and freeze frame data.
-
Clear DTCs (even if no DTCs are stored, perform the Clear DTC procedure) (See page
![2016 MY Sienna [12/2015 - 08/2016]; 2GR-FE (ENGINE CONTROL): SFI SYSTEM: DTC CHECK / CLEAR](/t3Portal/stylegraphics/info.gif)
).
-
Using the Techstream, switch the ECM from normal mode to check mode (See page
).
- Read the misfire counts of each cylinder, Cylinder #1 Misfire Count to Cylinder #6 Misfire Count, with the engine idling. If any misfire count is displayed, skip the following confirmation driving pattern.
-
Drive the vehicle so that the vehicle conditions displayed in Misfire RPM and Misfire Load of the Data List are the same as the freeze frame data. Perform this step several times.
HINT:
- In order to store misfire DTCs, it is necessary to operate the vehicle for the period of time shown in the table below, confirm the Misfire RPM and Misfire Load in the Data List.
Engine speed
Duration
Idling
8.0 minutes or more
1000
4.5 minutes or more
2000
2.5 minutes or more
3000
1.5 minutes or more
-
Check whether misfires have occurred by checking DTCs and freeze frame data.
HINT:
Do not turn the ignition switch off until the output DTC(s) and freeze frame data have been recorded. When the ECM returns to normal mode (default), the stored DTC(s), freeze frame data and other data are cleared.
- Record the DTC(s), freeze frame data and misfire counts.
- Turn the ignition switch off and wait for at least 30 seconds.
-
Clear DTCs (even if no DTCs are stored, perform the Clear DTC procedure) (See page
).
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
Inspect the fuses for circuits related to this system before performing the following inspection procedure.
HINT:
- If any DTCs other than misfire DTCs are output, troubleshoot those DTCs first.
- Read freeze frame data using the Techstream. 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.
- If the misfire does not recur when the vehicle is brought to the workshop, reproduce the conditions stored in the ECM as freeze frame data.
-
If the misfire still cannot be reproduced even though the conditions stored in the ECM as freeze frame data have been reproduced, one of the following factors is considered to be a possible cause of the problem:
- There was insufficient fuel volume in the tank.
- Improper fuel is used.
- The spark plugs have been contaminated.
- After finishing repairs, check the misfire counts of the cylinders ( [Cylinder #1 Misfire Count to Cylinder #6 Misfire Count]).
- Be sure to confirm that no misfiring cylinder DTCs are stored again by conducting the confirmation driving pattern after finishing repairs.
-
For 6 and 8 cylinder engines, the ECM intentionally does not store the specific misfiring cylinder DTCs at high engine speed. If misfires occur only in high engine speed areas, only DTC P0300 is stored.
In the event of DTC P0300 being present, perform the following operations:
-
Clear the DTC (See page
).
- Start the engine and conduct the confirmation driving pattern.
- Read the misfiring rates of each cylinder or DTC(s) using the Techstream.
- Repair the cylinder(s) that has a high misfiring rate or is indicated by the DTC.
- After finishing repairs, conduct the confirmation driving pattern again, in order to verify that DTC P0300 is not stored.
-
Clear the DTC (See page
- When one of Short FT #1, Long FT #1, Short FT #2 or Long FT #2 in the freeze frame data is outside the range of +/-15%, the air fuel ratio may be Rich (-15% or less) or Lean (+15% or more).
- When the Coolant Temp in the freeze frame data is less than 75°C (167°F), the misfire has occurred only while warming up the engine.
- An extremely imbalanced drive wheel which causes body vibration may cause misfire DTCs to be stored
PROCEDURE
|
1. |
CHECK ANY OTHER DTCS OUTPUT (IN ADDITION TO MISFIRE DTCS) |
(a) Connect the Techstream to the DLC3.
(b) Turn the ignition switch to ON.
(c) Turn the Techstream on.
(d) Enter the following menus: Powertrain / Engine / Trouble Codes.
(e) Read DTCs.
Result
|
Result |
Proceed to |
|---|---|
|
DTC P0300, P0301, P0302, P0303, P0304, P0305 and/or P0306 are output |
A |
|
DTC P0300, P0301, P0302, P0303, P0304, P0305 and/or P0306 and other DTCs are output |
B |
HINT:
If any DTCs other than P0300, P0301, P0302, P0303, P0304, P0305 and P0306 are output, troubleshoot those DTCs first.
| B |
|
|
|
2. |
CHECK PCV HOSE CONNECTIONS |
(a) Check the PCV hose connections (See page
).
OK:
PCV valve and hose are connected correctly and are not damaged.
| NG |
|
REPAIR OR REPLACE PCV HOSE |
|
|
3. |
READ VALUE USING TECHSTREAM (MISFIRE RPM AND MISFIRE LOAD) |
(a) Connect the Techstream to the DLC3.
(b) Turn the ignition switch to ON.
(c) Turn the Techstream on.
(d) Enter the following menus: Powertrain / Engine / Data List / Misfire RPM and Misfire Load.
(e) 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.
|
|
4. |
READ VALUE USING TECHSTREAM (CATALYST OT MF F/C) |
(a) Connect the Techstream to the DLC3.
(b) Turn the ignition switch to ON.
(c) Turn the Techstream on.
(d) Enter the following menus: Powertrain / Engine / Data List / Catalyst OT MF F/C.
(e) Read the value displayed on the Techstream.
Result
|
Data List |
Techstream Display |
Proceed to |
|---|---|---|
|
Catalyst OT MF F/C |
Avail |
A |
|
Not Avl |
B |
| B |
|
|
|
5. |
PERFORM ACTIVE TEST USING TECHSTREAM (PROHIBIT CAT OT F/C) |
(a) Connect the Techstream to the DLC3.
(b) Turn the ignition switch to ON.
(c) Turn the Techstream on.
(d) Enter the following menus: Powertrain / Engine / Active Test / Prohibit the Catalyst OT Misfire prevent F/C.
(e) Perform the Active Test.
NOTICE:
When performing the Active Test, make sure the vehicle is stopped and either idling or being revved within 3000 rpm.
|
|
6. |
READ VALUE USING TECHSTREAM (CYLINDER MISFIRE COUNT) |
(a) Enter the following menus: Powertrain / Engine / Data List / Cylinder #1 Misfire Count, Cylinder #2 Misfire Count, Cylinder #3 Misfire Count, #4 Misfire Count, #5 Misfire Count and Cylinder #6 Misfire Count.
(b) Start the engine and allow the engine to idle.
(c) Read each value for Cylinder #1 Misfire Count to Cylinder #6 Misfire Count displayed on the Techstream.
If no misfire counts occur in any cylinders, perform steps (d) and (e) and then check the misfire counts again.
(d) Drive the vehicle with the Misfire RPM and Misfire Load noted in the "Read Value Using Techstream (Misfire RPM and Misfire Load)" procedures above.
(e) Read the Cylinder #1 Misfire Count to Cylinder #6 Misfire Count or DTCs displayed on the Techstream.
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's record of the ECT is below 75°C (167°F), the misfire may be detected only when the engine is cold.
- If the freeze frame data's record of the Engine Run Time is below 120 seconds, the misfire may be detected immediately after the engine is started.
| B |
|
|
|
7. |
INSPECT SPARK PLUG |
(a) Inspect the spark plug of the misfiring cylinder (See page
).
HINT:
Perform "Inspection After Repair" after replacing the spark plug (See page
).
| NG |
|
|
|
8. |
CHECK FOR SPARKS AND IGNITION (SPARK TEST) |
(a) Disconnect the B7, B8, B9, B10, B11 and B12 fuel injector assembly connectors to prevent the engine from starting.
CAUTION:
Always disconnect all the fuel injector assembly connectors.
(b) Remove the ignition coil assembly from the cylinder head.
(c) Perform a spark test (See page
).
HINT:
Perform "Inspection After Repair" after repairing or replacing the ignition system (See page
).
| NG |
|
|
|
9. |
CHECK CYLINDER COMPRESSION PRESSURE |
(a) Measure the cylinder compression pressure of the misfiring cylinder (See page
).
HINT:
Perform "Inspection After Repair" after repairing or replacing the engine system (See page
).
| NG |
|
CHECK ENGINE TO DETERMINE CAUSE OF LOW COMPRESSION |
|
|
10. |
CHECK ECM TERMINAL VOLTAGE (#10, #20, #30, #40, #50 AND /OR #60) |
(a) Disconnect the ECM 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 |
Switch Condition |
Specified Condition |
|---|---|---|
|
B1-86 (#10) - B1-43 (E01) |
Ignition switch ON |
11 to 14 V |
|
B1-109 (#20) - B1-43 (E01) |
Ignition switch ON |
11 to 14 V |
|
B1-85 (#30) - B1-43 (E01) |
Ignition switch ON |
11 to 14 V |
|
B1-108 (#40) - B1-43 (E01) |
Ignition switch ON |
11 to 14 V |
|
B1-84 (#50) - B1-43 (E01) |
Ignition switch ON |
11 to 14 V |
|
B1-107 (#60) - B1-43 (E01) |
Ignition switch ON |
11 to 14 V |
Text in Illustration
|
*a |
Front view of wire harness connector (to ECM) |
| NG |
|
|
|
11. |
CHECK FUEL INJECTOR OF MISFIRING CYLINDER |
(a) Check the fuel injector injection (whether fuel volume is high or low, and whether injection pattern is poor) (See page
).
HINT:
Perform "Inspection After Repair" after replacing the fuel injector assembly (See page
).
| NG |
|
|
|
12. |
CHECK INTAKE SYSTEM |
(a) Check the intake system for vacuum leak.
OK:
No leaks from intake system.
HINT:
Perform "Inspection After Repair" after repairing or replacing the intake system (See page
).
| NG |
|
REPAIR OR REPLACE INTAKE SYSTEM |
|
|
13. |
CHECK FUEL PRESSURE |
(a) Check the fuel pressure (See page
).
| NG |
|
|
|
14. |
READ VALUE USING TECHSTREAM (COOLANT TEMP) |
| NG |
|
|
|
15. |
READ VALUE USING TECHSTREAM (MAF) |
| NG |
|
|
|
16. |
CHECK VALVE TIMING |
| OK |
|
| NG |
|
|
17. |
CHECK INTAKE SYSTEM |
(a) Check the intake system for vacuum leaks.
OK:
No leaks from intake system.
HINT:
Perform "Inspection After Repair" after repairing or replacing the intake system (See page
).
| NG |
|
REPAIR OR REPLACE INTAKE SYSTEM |
|
|
18. |
CHECK FUEL PRESSURE |
(a) Check the fuel pressure (See page
).
| NG |
|
|
|
19. |
READ VALUE USING TECHSTREAM (COOLANT TEMP) |
| NG |
|
|
|
20. |
READ VALUE USING TECHSTREAM (MAF) |
| NG |
|
|
|
21. |
CHECK VALVE TIMING |
| NG |
|
|
|
22. |
INSPECT SPARK PLUG |
(a) Remove the ignition coil assembly and the spark plug from the misfiring cylinder.
(b) Inspect the spark plug of the misfiring cylinder (See page
).
HINT:
Perform "Inspection After Repair" after replacing the spark plug (See page
).
| NG |
|
|
|
23. |
CHECK FOR SPARKS AND IGNITION (SPARK TEST) |
(a) Disconnect the B7, B8, B9, B10, B11 and B12 fuel injector assembly connectors to prevent the engine from starting.
CAUTION:
Always disconnect all the fuel injector assembly connectors.
(b) Remove the ignition coil assembly from the cylinder head.
(c) Perform a spark test (See page
).
HINT:
Perform "Inspection After Repair" after repairing or replacing the intake system (See page
).
| NG |
|
|
|
24. |
CHECK CYLINDER COMPRESSION PRESSURE |
(a) Measure the cylinder compression pressure of the misfiring cylinder (See page
).
HINT:
Perform "Inspection After Repair" after repairing or replacing the engine assembly (See page
).
| NG |
|
CHECK ENGINE TO DETERMINE CAUSE OF LOW COMPRESSION |
|
|
25. |
INSPECT ECM TERMINAL VOLTAGE (#10, #20, #30, #40, #50 AND /OR #60) |
(a) Disconnect the ECM 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 |
Switch Condition |
Specified Condition |
|---|---|---|
|
B1-86 (#10) - B1-43 (E01) |
Ignition switch ON |
11 to 14 V |
|
B1-109 (#20) - B1-43 (E01) |
Ignition switch ON |
11 to 14 V |
|
B1-85 (#30) - B1-43 (E01) |
Ignition switch ON |
11 to 14 V |
|
B1-108 (#40) - B1-43 (E01) |
Ignition switch ON |
11 to 14 V |
|
B1-84 (#50) - B1-43 (E01) |
Ignition switch ON |
11 to 14 V |
|
B1-107 (#60) - B1-43 (E01) |
Ignition switch ON |
11 to 14 V |
Text in Illustration
|
*a |
Front view of wire harness connector (to ECM) |
| NG |
|
|
|
26. |
CHECK FUEL INJECTOR OF MISFIRING CYLINDER |
(a) Check the fuel injector injection (whether fuel volume is high or low, and whether injection pattern is poor) (See page
).
HINT:
Perform "Inspection After Repair" after replacing the fuel injector assembly (See page
).
| NG |
|
|
|
27. |
CHECK HARNESS AND CONNECTOR (MASS AIR FLOW METER CONNECTOR CONNECTION) |
(a) Check the connection and terminal contact pressure of connectors and wire harnesses between the mass air flow meter and ECM (See page
).
HINT:
Repair any problems.
|
|
28. |
CHECK WHETHER DTC OUTPUT RECURS |
(a) Connect the Techstream to the DLC3.
(b) Turn the ignition switch to ON.
(c) Turn the Techstream on.
(d) Clear DTCs (See page
).
(e) Turn the ignition switch off and wait for at least 30 seconds.
(f) Turn the ignition switch to ON.
(g) Turn the Techstream on.
(h) Start the engine.
(i) Warm up the engine.
(j) Drive the vehicle in accordance with the driving pattern described in Confirmation Driving Pattern.
(k) Enter the following menus: Powertrain / Engine / Utility / All Readiness.
(l) Input the DTC: P0300, P0301, P0302, P0303, 0304, P0305 or P0306.
(m) Check the DTC judgment result.
Result
|
Result |
Proceed to |
|---|---|
|
ABNORMAL (P0300, P0301, P0302, P0303, 0304, P0305 or P0306 is output) |
A |
|
NORMAL (DTC is not output) |
B |
| B |
|
END |
|
|
29. |
CHECK HARNESS AND CONNECTOR (MASS AIR FLOW METER - ECM) |
| NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
|
30. |
REPLACE MASS AIR FLOW METER |
(a) Replace the mass air flow meter (See page
).
HINT:
- If the results of the inspections performed in steps 15 and 20 indicated no problem, proceed to the next step without replacing the mass air flow meter.
-
Perform "Inspection After Repair" after replacing the mass air flow meter (See page
).
|
|
31. |
CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED |
(a) Connect the Techstream to the DLC3.
(b) Turn the ignition switch to ON.
(c) Turn the Techstream on.
(d) Clear DTCs (See page
).
(e) Turn the ignition switch off and wait for at least 30 seconds.
(f) Turn the ignition switch to ON.
(g) Turn the Techstream on.
(h) Start the engine.
(i) Warm up the engine.
(j) Drive the vehicle in accordance with the driving pattern described in Confirmation Driving Pattern.
(k) Enter the following menus: Powertrain / Engine / Utility / All Readiness.
(l) Input the DTC: P0300, P0301, P0302, P0303, 0304, P0305 or P0306.
(m) Check the DTC judgment result.
Result
|
Result |
Proceed to |
|---|---|
|
NORMAL (DTC is not output) |
A |
|
ABNORMAL (P0300, P0301, P0302, P0303, 0304, P0305 or P0306 is output) |
B |
| A |
|
END |
| B |
|
|
32. |
CHANGE TO NORMAL SPARK PLUG AND CHECK SPARK OF MISFIRING CYLINDER |
(a) Change the installed spark plug to a spark plug that functions normally.
(b) Perform a spark test (See page
).
CAUTION:
Always disconnect all injector connectors.
NOTICE:
Do not crank the engine for more than 2 seconds.
(1) Install the spark plug to the ignition coil assembly and connect the ignition coil assembly connector.
(2) Disconnect the fuel injector assembly connector.
(3) Ground the spark plug.
(4) Check if sparks occur while the engine is being cranked.
OK:
Sparks jump across electrode gap.
HINT:
Perform "Inspection After Repair" after replacing the spark plug (See page
).
| OK |
|
|
|
33. |
CHANGE TO NORMAL IGNITION COIL AND CHECK SPARK OF MISFIRING CYLINDER |
(a) Change the ignition coil assembly to an ignition coil assembly that functions normally.
(b) Perform a spark test.
CAUTION:
Always disconnect all injector connectors.
NOTICE:
Do not crank the engine for more than 2 seconds.
(1) Install the spark plug to the ignition coil assembly and connect the ignition coil assembly connector.
(2) Disconnect the B7, B8, B9, B10, B11 and B12 fuel injector assembly connectors.
(3) Ground the spark plug.
(4) Check if sparks occur while the engine is being cranked.
OK:
Sparks jump across electrode gap.
HINT:
Perform "Inspection After Repair" after replacing the ignition coil assembly (See page
).
| OK |
|
| NG |
|
|
34. |
CHECK FUEL LINE |
(a) Check the fuel lines for leaks or blockage.
HINT:
Perform "Inspection After Repair" after replacing the fuel pump (See page
).
| OK |
|
| NG |
|
REPAIR OR REPLACE FUEL LINE |
|
|