NR Series ENGINE CONTROL SFI SYSTEM P030000 Random/Multiple Cylinder Misfire Detected P030027 Random/Multiple Cylinder Misfire Detected (Emission) Signal Rate of Change Above Threshold P030085 Random / Multiple Cylinder Misfire Detected (Over Temperature) Signal Above Allowable Range P030100 Cylinder 1 Misfire Detected P030200 Cylinder 2 Misfire Detected P030300 Cylinder 3 Misfire Detected P030400 Cylinder 4 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. | Detection Item | DTC Detection Condition | Trouble Area | MIL | Memory | Note |
|---|---|---|---|---|---|---|
| P030000 | Random/Multiple Cylinder Misfire Detected | Simultaneous misfiring of several cylinders occurs and one of the following conditions is met (2 trip detection logic):
·
A misfire occurs that may damage the three-way catalytic converter (MIL blinks immediately when detected). ·
An emission deterioration misfire occurs (MIL illuminates). |
·
Open or short in engine wire harness ·
Connector connection ·
Vacuum hose connections ·
Ignition system ·
Fuel injector assembly ·
Fuel pressure ·
Mass air flow meter sub-assembly ·
Engine coolant temperature sensor ·
Compression pressure ·
Valve timing ·
PCV valve ·
PCV system ·
Intake system ·
ECM |
Comes on/Blinks*
*: The MIL flashes when a catalyst-damaging misfire is detected. |
DTC stored | SAE Code:
P0300 |
| P030027 | Random/Multiple Cylinder Misfire Detected (Emission) Signal Rate of Change Above Threshold | An emission deterioration misfire occurs (2 trip detection logic). | ·
Open or short in engine wire harness ·
Connector connection ·
Vacuum hose connections ·
Ignition system ·
Fuel injector assembly ·
Fuel pressure ·
Mass air flow meter sub-assembly ·
Engine coolant temperature sensor ·
Compression pressure ·
Valve timing ·
PCV valve ·
PCV system ·
Intake system ·
ECM |
Comes on | DTC stored | SAE Code:
- |
| P030085 | Random / Multiple Cylinder Misfire Detected (Over Temperature) Signal Above Allowable Range | A misfire occurs that may damage the three-way catalytic converter (2 trip detection logic). | ·
Open or short in engine wire harness ·
Connector connection ·
Vacuum hose connections ·
Ignition system ·
Fuel injector assembly ·
Fuel pressure ·
Mass air flow meter sub-assembly ·
Engine coolant temperature sensor ·
Compression pressure ·
Valve timing ·
PCV valve ·
PCV system ·
Intake system ·
ECM |
Comes on/Blinks*
*: The MIL flashes when a catalyst-damaging misfire is detected. |
DTC stored | SAE Code:
- |
| P030100 | Cylinder 1 Misfire Detected | Misfiring of a specific cylinder occurs and one of the following conditions is met (2 trip detection logic):
·
A misfire occurs that may damage the three-way catalytic converter (MIL blinks immediately when detected). ·
An emission deterioration misfire occurs (MIL illuminates). |
·
Open or short in engine wire harness ·
Connector connection ·
Vacuum hose connections ·
Ignition system ·
Fuel injector assembly ·
Fuel pressure ·
Mass air flow meter sub-assembly ·
Engine coolant temperature sensor ·
Compression pressure ·
Valve timing ·
PCV valve ·
PCV system ·
Intake system ·
ECM |
Comes on/Blinks*
*: The MIL flashes when a catalyst-damaging misfire is detected. |
DTC stored | SAE Code:
P0301 |
| P030200 | Cylinder 2 Misfire Detected | Misfiring of a specific cylinder occurs and one of the following conditions is met (2 trip detection logic):
·
A misfire occurs that may damage the three-way catalytic converter (MIL blinks immediately when detected). ·
An emission deterioration misfire occurs (MIL illuminates). |
·
Open or short in engine wire harness ·
Connector connection ·
Vacuum hose connections ·
Ignition system ·
Fuel injector assembly ·
Fuel pressure ·
Mass air flow meter sub-assembly ·
Engine coolant temperature sensor ·
Compression pressure ·
Valve timing ·
PCV valve ·
PCV system ·
Intake system ·
ECM |
Comes on/Blinks*
*: The MIL flashes when a catalyst-damaging misfire is detected. |
DTC stored | SAE Code:
P0302 |
| P030300 | Cylinder 3 Misfire Detected | Misfiring of a specific cylinder occurs and one of the following conditions is met (2 trip detection logic):
·
A misfire occurs that may damage the three-way catalytic converter (MIL blinks immediately when detected). ·
An emission deterioration misfire occurs (MIL illuminates). |
·
Open or short in engine wire harness ·
Connector connection ·
Vacuum hose connections ·
Ignition system ·
Fuel injector assembly ·
Fuel pressure ·
Mass air flow meter sub-assembly ·
Engine coolant temperature sensor ·
Compression pressure ·
Valve timing ·
PCV valve ·
PCV system ·
Intake system ·
ECM |
Comes on/Blinks*
*: The MIL flashes when a catalyst-damaging misfire is detected. |
DTC stored | SAE Code:
P0303 |
| P030400 | Cylinder 4 Misfire Detected | Misfiring of a specific cylinder occurs and one of the following conditions is met (2 trip detection logic):
·
A misfire occurs that may damage the three-way catalytic converter (MIL blinks immediately when detected). ·
An emission deterioration misfire occurs (MIL illuminates). |
·
Open or short in engine wire harness ·
Connector connection ·
Vacuum hose connections ·
Ignition system ·
Fuel injector assembly ·
Fuel pressure ·
Mass air flow meter sub-assembly ·
Engine coolant temperature sensor ·
Compression pressure ·
Valve timing ·
PCV valve ·
PCV system ·
Intake system ·
ECM |
Comes on/Blinks*
*: The MIL flashes when a catalyst-damaging misfire is detected. |
DTC stored | SAE Code:
P0304 |
When DTCs for misfiring cylinders are randomly stored, but DTC P030000 is not stored, it indicates that misfires have been detected in different cylinders at different times. DTC P030000 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 after the engine starts, an excessive number of misfires (approximately 10 to 70 misfires per 1000 crankshaft revolutions) occurs once.
An excessive number of misfires (approximately 10 to 70 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 damage to the three-way catalytic converter, is detected.
At a high engine speed, a sufficient amount of misfires to damage the catalyst occurring within 200 crankshaft revolutions is detected once.
At a normal engine speed, a sufficient amount of misfires to damage the catalyst occurring within 200 crankshaft revolutions is detected 3 times.
MONITOR STRATEGY
| 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 sub-assembly) Mass air flow meter sub-assembly |
| Frequency of Operation | Continuous |
TYPICAL ENABLING CONDITIONS
| Either of the following conditions is met | (a) or (b) |
| (a) Engine coolant temperature at engine start | Higher than -7°C (19°F) |
| (b) Engine coolant temperature | Higher than 20°C (68°F) |
| First 1000 revolutions after engine start, or during check mode | Crankshaft 1000 revolutions |
| Except above | Crankshaft 1000 revolutions x 4 |
| All of the following conditions 1, 2, 3 and 4 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 2300 rpm |
| 4. Engine load | Less than 65% |
CONFIRMATION DRIVING PATTERN
- HINT:
- ·
When clearing the permanent DTCs, refer to the "CLEAR PERMANENT DTC" procedure.
·Permanent misfire and fuel system DTCs can only be cleared when performing the universal trip driving pattern when no malfunction is detected.
Connect the GTS to the DLC3.
Turn the ignition switch to ON.
Turn the GTS on.
Record the DTC(s) and Freeze Frame Data.
Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).
Using the GTS, switch the ECM from normal mode to check mode.
Start the engine.
Read the misfire counts of each cylinder, Misfire Count Cylinder #1 to Misfire Count Cylinder #4, 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 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 the DTCs (even if no DTCs are stored, perform the clear DTC procedure).
WIRING DIAGRAM
Refer to DTC P010012 for the mass air flow meter sub-assembly circuit.
CAUTION / NOTICE / HINT
- NOTICE:
-
Inspect the fuses for circuits related to this system before performing the following procedure.
- HINT:
- ·
If any DTCs other than misfire DTCs are output, troubleshoot those DTCs first.
·Check the "Fuel Cut Elapsed Time" in the Data List or the Freeze Frame Data.
If the elapsed time is over 0 seconds, then the engine speed is high (engine speed at which fuel cut occurs + 500 rpm).
When this has happened, there is the possibility that the No. 1 valve rocker arm sub-assembly will become loose and a fire could start, so check that the No. 1 valve rocker arm sub-assembly is properly attached.
·By clearing the DTCs, "Fuel Cut Elapsed Time" will be cleared.
·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:
(a)There was insufficient fuel in the tank.
(b)Improper fuel was used.
(c)The spark plugs have been contaminated.
(d)The problem requires further diagnosis.
·After finishing repairs, check the misfire counts of the cylinders (Misfire Count Cylinder #1 to Misfire Count Cylinder #4).
·Be sure to confirm that no misfiring cylinder DTCs are stored again by conducting the confirmation driving pattern after finishing repairs.
·When one of Short FT B1S1 or Long FT B1S1 in the Freeze Frame Data is outside the range of +/-20%, the air fuel ratio may be rich (-20% or less) or lean (+20% or higher).
·When Coolant Temperature in the Freeze Frame Data is less than 75°C (167°F), the misfires have occurred only while warming up the engine.
·Vehicle body vibration caused by an extremely imbalanced drive wheel may cause misfire DTCs to be stored.
·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
Connect the GTS to the DLC3.
Turn the ignition switch to ON.
Turn the GTS on.
Enter the following menus: Powertrain / Engine / Trouble Codes.
Read the DTCs.
- Powertrain > Engine > Trouble Codes
- 50001 372
- Result:
Result Proceed to DTC P030000, P030027, P030085, P030100, P030200, P030300 and/or P030400 are output A DTC P030000, P030027, P030085, P030100, P030200, P030300 and/or P030400 and other DTCs are output B
- HINT:
-
If any DTCs other than P030000, P030027, P030085, P030100, P030200, P030300 and/or P030400 are output, troubleshoot those DTCs first.
A
B
| *1 | Air Hole Cover |
Before inspecting the PCV valve, first check that there is no suction from the air hole cover.
- OK:
No suction from air hole cover, and PCV valve operation is normal.
- Result:
Proceed to OK NG
OK
NG
Connect the GTS to the DLC3.
Turn the ignition switch to ON.
Turn the GTS on.
Enter the following menus: Powertrain / Engine / Data List / Misfire RPM and Misfire Load.
- Powertrain > Engine > Data List
-
Tester Display Misfire RPM Misfire Load - 50003 372 146,152
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
NEXT
Connect the GTS to the DLC3.
Turn the ignition switch to ON.
Turn the GTS on.
Enter the following menus: Powertrain / Engine / Data List / Catalyst OT Misfire Fuel Cut.
- Powertrain > Engine > Data List
-
Tester Display Catalyst OT Misfire Fuel Cut - 50003 372 154
Read the value displayed on the GTS.
- Result:
Data List Result Proceed to Catalyst OT Misfire Fuel Cut Avail A Not Avl B
A
B
Connect the GTS to the DLC3.
Turn the ignition switch to ON.
Turn the GTS on.
Enter the following menus: Powertrain / Engine / Active Test / Prohibit the Catalyst OT Misfire Prevent Fuel Cut.
- Powertrain > Engine > Active Test
-
Tester Display Prohibit the Catalyst OT Misfire Prevent Fuel Cut - 50004 372 42003
Perform the Active Test.
- NOTICE:
-
When performing the Active Test, make sure the vehicle is stopped and the engine is either idling or being revved within 3000 rpm.
- Result:
Proceed to NEXT
NEXT
Start the engine.
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 - 50003 372 148,149,150,151
Read each value for Misfire Count Cylinder #1 to Misfire Count Cylinder #4 displayed on the GTS. 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 GTS (Misfire RPM and Misfire Load)" procedures above [A].
Read the Misfire Count Cylinder #1 to Misfire Count Cylinder #4 or DTCs displayed on the GTS [B].
- Result:
Misfire Count Proceed to 1 or 2 cylinders have misfire counts A 3 cylinders or more have misfire counts B
A
B
Inspect the spark plug of the misfiring cylinder.
- HINT:
-
Perform "Inspection After Repair" after replacing the spark plug.
- Result:
Proceed to OK NG
OK
NG
Interchange both the ignition coil assembly and spark plug and perform a spark test.
- HINT:
- ·
If the result of the spark test is normal, proceed to the next step.
·Perform "Inspection After Repair" after replacing the ignition coil assembly.
- Result:
Proceed to NEXT
NEXT
Check the resistance of the fuel injector assembly.
- HINT:
-
Perform "Inspection After Repair" after replacing the fuel injector assembly.
- Result:
Proceed to OK NG
OK
NG
Measure the cylinder compression pressure of the misfiring cylinder.
- HINT:
-
Perform "Inspection After Repair" after repairing or replacing the engine assembly.
- Result:
Proceed to OK NG
OK
NG
Check the fuel pressure (for low pressure side).
- Result:
Proceed to OK NG
OK
NG
Connect the GTS to the DLC3.
Start the engine and warm it up.
Turn the GTS on.
Enter the following menus: Powertrain / Engine / Data List / High Fuel Pressure Sensor.
- Powertrain > Engine > Data List
-
Tester Display High Fuel Pressure Sensor - 50003 372 47
Read the values.
- Standard:
GTS Display Condition Specified Condition High Fuel Pressure Sensor ·Shift lever position: P
·A/C: Off
·Engine warmed up
·Engine idling
2.4 to 30 MPa ·Shift lever position: P
·A/C: Off
·Engine warmed up
·Engine speed: 3000 rpm
2.4 to 30 MPa
- Result:
Proceed to OK NG
OK
NG
Check the intake system for vacuum leaks.
- OK:
No leaks in intake system.
- HINT:
-
Perform "Inspection After Repair" after repairing or replacing the intake system.
- Result:
Proceed to OK NG
OK
NG
Connect the GTS to the DLC3.
Turn the ignition switch to ON.
Turn the GTS on.
Enter the following menus: Powertrain / Engine / Data List / Coolant Temperature.
- Powertrain > Engine > Data List
-
Tester Display Coolant Temperature - 50003 372 205
Read the Data List twice, when the engine is both cold and warmed up.
- Standard:
GTS Display Condition Specified Condition Coolant Temperature Cold engine Same as ambient air temperature Warm engine Between 75 and 100°C (167 and 212°F)
- HINT:
-
Perform "Inspection After Repair" after replacing the engine coolant temperature sensor.
- Result:
Proceed to OK NG
OK
NG
Connect the GTS to the DLC3.
Start the engine and warm it up.
Turn the GTS on.
Enter the following menus: Powertrain / Engine / Data List / Engine Speed, Mass Air Flow Sensor and Coolant Temperature.
- Powertrain > Engine > Data List
-
Tester Display Engine Speed Mass Air Flow Sensor Coolant Temperature - 50003 372 211,215,205
Allow the engine to idle until Coolant Temperature reaches 75°C (167°F) or higher.
Read Mass Air Flow Sensor with the engine speed at 3000 rpm.
- Standard:
GTS Display Condition Specified Condition Mass Air Flow Sensor ·Shift lever position: P
·A/C: Off
·Engine warmed up
·Engine Speed: 3000 rpm
Between 4.0 and 14.0 gm/sec
- Result:
Proceed to OK NG
OK
NG
Remove the cylinder head cover sub-assembly.
Turn the crankshaft pulley and align its cutout with the "0" timing mark of the timing chain cover assembly.
| *a | 14.07° |
| *b | 5.93° |
| *c | Timing Mark |
| *d | "0" Timing Mark |
| *e | Cutout |
Check that the timing marks of the camshaft timing gear assembly and camshaft timing exhaust gear assembly are at the positions shown in the illustration.
- HINT:
-
If the timing marks are not at the positions shown, turn the crankshaft one revolution clockwise.
- OK:
Timing marks on camshaft timing gear assembly and camshaft timing exhaust gear assembly 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
OK
NG
Check for mechanical malfunctions that affect the valve timing, such as a jumped tooth or stretching of the timing chain.
- HINT:
-
Perform "Inspection After Repair" after repairing or replacing the engine mechanical system.
- Result:
Proceed to OK NG
OK
NG
Connect the GTS to the DLC3.
Turn the ignition switch to ON.
Turn the GTS on.
Clear the DTCs.
- Powertrain > Engine > Clear DTCs
- 50002 372
Turn the ignition switch off and wait for at least 30 seconds.
- Result:
Proceed to NEXT
NEXT
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 - 50005 372 20
Input the DTC: P030000, P030027, P030085, P030100, P030200, P030300 or P030400.
Check the DTC judgment result.
- Result:
Result Proceed to NORMAL
(DTCs are not output)A ABNORMAL
(DTC P030000, P030027, P030085, P030100, P030200, P030300 and/or P030400 are output)B
A
B
Check the intake system for vacuum leaks.
- OK:
No leaks in intake system.
- HINT:
-
Perform "Inspection After Repair" after repairing or replacing the intake system.
- Result:
Proceed to OK NG
OK
NG
Check the fuel pressure (for low pressure side).
- Result:
Proceed to OK NG
OK
NG
Connect the GTS to the DLC3.
Start the engine and warm it up.
Turn the GTS on.
Enter the following menus: Powertrain / Engine / Data List / High Fuel Pressure Sensor.
- Powertrain > Engine > Data List
-
Tester Display High Fuel Pressure Sensor - 50003 372 47
Read the values.
- Standard:
GTS Display Condition Specified Condition High Fuel Pressure Sensor ·Shift lever position: P
·A/C: Off
·Engine warmed up
·Engine idling
2.4 to 30 MPa ·Shift lever position: P
·A/C: Off
·Engine warmed up
·Engine speed: 3000 rpm
2.4 to 30 MPa
- Result:
Proceed to OK NG
OK
NG
Connect the GTS to the DLC3.
Turn the ignition switch to ON.
Turn the GTS on.
Enter the following menus: Powertrain / Engine / Data List / Coolant Temperature.
- Powertrain > Engine > Data List
-
Tester Display Coolant Temperature - 50003 372 205
Read the Data List twice, when the engine is both cold and warmed up.
- Standard:
GTS Display Condition Specified Condition Coolant Temperature Cold engine Same as ambient air temperature Warm engine Between 75 and 100°C (167 and 212°F)
- HINT:
-
Perform "Inspection After Repair" after replacing the engine coolant temperature sensor.
- Result:
Proceed to OK NG
OK
NG
Connect the GTS to the DLC3.
Start the engine and warm it up.
Turn the GTS on.
Enter the following menus: Powertrain / Engine / Data List / Engine Speed, Mass Air Flow Sensor and Coolant Temperature.
- Powertrain > Engine > Data List
-
Tester Display Engine Speed Mass Air Flow Sensor Coolant Temperature - 50003 372 211,215,205
Allow the engine to idle until Coolant Temperature reaches 75°C (167°F) or higher.
Read Mass Air Flow Sensor with the engine speed at 3000 rpm.
- Standard:
GTS Display Condition Specified Condition Mass Air Flow Sensor ·Shift lever position: P
·A/C: Off
·Engine warmed up
·Engine Speed: 3000 rpm
Between 4.0 and 14.0 gm/sec
- Result:
Proceed to OK NG
OK
NG
Inspect the spark plug of the misfiring cylinder.
- HINT:
-
Perform "Inspection After Repair" after replacing the spark plug.
- Result:
Proceed to OK NG
OK
NG
Interchange both the ignition coil assembly and spark plug and perform a spark test.
- HINT:
- ·
If the result of the spark test is normal, proceed to the next step.
·Perform "Inspection After Repair" after replacing the ignition coil assembly.
- Result:
Proceed to NEXT
NEXT
Measure the cylinder compression pressure of the misfiring cylinder.
- HINT:
-
Perform "Inspection After Repair" after repairing or replacing the engine assembly.
- Result:
Proceed to OK NG
OK
NG
Check the resistance of the fuel injector assembly.
- HINT:
-
Perform "Inspection After Repair" after replacing the fuel injector assembly.
- Result:
Proceed to OK NG
OK
NG
Check for mechanical malfunctions that affect the valve timing, such as a jumped tooth or stretching of the timing chain.
- HINT:
-
Perform "Inspection After Repair" after repairing or replacing the engine mechanical system.
- Result:
Proceed to OK NG
OK
NG
Connect the GTS to the DLC3.
Turn the ignition switch to ON.
Turn the GTS on.
Clear the DTCs.
- Powertrain > Engine > Clear DTCs
- 50002 372
Turn the ignition switch off and wait for at least 30 seconds.
- Result:
Proceed to NEXT
NEXT
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 - 50005 372 20
Input the DTC: P030000, P030027, P030085, P030100, P030200, P030300 or P030400.
Check the DTC judgment result.
- Result:
Result Proceed to NORMAL
(DTCs are not output)A ABNORMAL
(DTC P030000, P030027, P030085, P030100, P030200, P030300 and/or P030400 are output)B
A
B
Check the connection and terminal contact pressure of connectors and wire harnesses between the mass air flow meter sub-assembly and ECM.
- HINT:
-
Repair any problems.
- Result:
Proceed to NEXT
NEXT
Connect the GTS to the DLC3.
Turn the ignition switch to ON.
Turn the GTS on.
Clear the DTCs.
- Powertrain > Engine > Clear DTCs
- 50002 372
Turn the ignition switch off and wait for at least 30 seconds.
- Result:
Proceed to NEXT
NEXT
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 - 50005 372 20
Input the DTC: P030000, P030027, P030085, P030100, P030200, P030300 or P030400.
Check the DTC judgment result.
- Result:
Result Proceed to NORMAL
(DTCs are not output)A ABNORMAL
(DTC P030000, P030027, P030085, P030100, P030200, P030300 and/or P030400 are output)B
A
B
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 C25-3 (VG) - C78-92 (VG) Always Below 1 Ω C25-2 (E2G) - C78-91 (E2G) Always Below 1 Ω C25-3 (VG) or C78-92 (VG) - Body ground and other terminals Always 10 kΩ or higher
- Result:
Proceed to OK NG
OK
NG
Replace the mass air flow meter sub-assembly.
- HINT:
- ·
If the results of the inspections performed in step 15 or 24 (READ VALUE USING GTS (MASS AIR FLOW SENSOR)) indicated no problem, proceed to the next step without replacing the mass air flow meter sub-assembly.
·Perform "Inspection After Repair" after replacing the mass air flow meter sub-assembly.
- Result:
Proceed to NEXT
NEXT
Connect the GTS to the DLC3.
Turn the ignition switch to ON.
Turn the GTS on.
Clear the DTCs.
- Powertrain > Engine > Clear DTCs
- 50002 372
Turn the ignition switch off and wait for at least 30 seconds.
- Result:
Proceed to NEXT
NEXT
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 - 50005 372 20
Input the DTC: P030000, P030027, P030085, P030100, P030200, P030300 or P030400.
Check the DTC judgment result.
- Result:
Result Proceed to NORMAL
(DTCs are not output)A ABNORMAL
(DTC P030000, P030027, P030085, P030100, P030200, P030300 and/or P030400 are output)B
A
B
Inspect the fuel pump (for low pressure side).
- HINT:
-
Perform "Inspection After Repair" after replacing the fuel pump (for low pressure side).
- Result:
Proceed to OK NG
OK
NG