DTC P0301:00, P0302:00, P0303:00, P0304:00 [MZR-CD 2.2]

id0102f3703300

DTC P0301:00

Cylinder No.1 misfire detected

DTC P0302:00

Cylinder No.2 misfire detected

DTC P0303:00

Cylinder No.3 misfire detected

DTC P0304:00

Cylinder No.4 misfire detected
DETECTION CONDITION
•  The PCM monitors the CKP sensor input signal interval time. The PCM calculates the deviation of the interval time for each cylinder. If the deviation of the interval time exceeds the preprogrammed criteria, the PCM detects a misfire in the corresponding cylinder. While the engine is running, the PCM counts the number of misfires and calculates misfire ratio for each crankshaft revolution. If the ratio exceeds the preprogrammed criteria, the PCM determines that a misfire, which can affect emission performance, has occurred.
MONITORING CONDITIONS
―  Battery voltage: 8—20 V
―  Engine speed: less than 1,200 rpm
―  Engine coolant temperature: 60 °C {140 °F} or more
Diagnostic support note
•  The MIL illuminates if the PCM detects the above malfunction condition in two consecutive drive cycles or in one drive cycle while the DTC for the same malfunction has been stored in the PCM.
•  PENDING CODE is available if the PCM detects the above malfunction condition during first drive cycle.
•  FREEZE FRAME DATA (Mode 2)/Snapshot data is available.
•  The DTC is stored in the PCM memory.
POSSIBLE CAUSE
•  Fuel leakage or clogged fuel line
•  PCM input signal malfunction
―  APP sensor signal malfunction
―  A/F sensor signal malfunction
―  Brake switch signal malfunction
―  CKP sensor signal malfunction
―  ECT sensor signal malfunction
―  EGR position signal malfunction
―  IAT sensor signal malfunction
―  MAF sensor signal malfunction
―  VSS signal malfunction
•  CKP sensor malfunction
•  CMP sensor malfunction
•  Air restriction or leakage in intake-air system
•  Turbocharger malfunction
•  MAF sensor malfunction
•  Engine coolant leakage
•  Inadequate engine compression due to engine internal malfunction
•  Fuel injector malfunction
•  PCM malfunction

Diagnostic procedure

STEP

INSPECTION

ACTION
1
IDENTIFY TRIGGER DTC FOR FREEZE FRAME DATA (MODE 2)
•  Perform the Freeze Frame PID Data Access Procedure.
•  Is the DTC P0301:00, P0302:00, P0303:00 or P0304:00 on FREEZE FRAME DATA (Mode 2)?
Yes
Go to the next step.
No
Go to the troubleshooting procedure for DTC on FREEZE FRAME DATA (Mode 2).
(See DTC TABLE [MZR-CD 2.2].)
2
VERIFY FREEZE FRAME DATA (MODE 2)/SNAPSHOT DATA HAS BEEN RECORDED
•  Has the FREEZE FRAME DATA (Mode 2)/snapshot data been recorded?
Yes
Go to the next step.
No
Record the FREEZE FRAME DATA (Mode 2)/snapshot data on the repair order, then go to the next step.
3
VERIFY RELATED SERVICE INFORMATION AVAILABILITY
•  Verify related Service Information availability.
•  Is any related Service Information available?
Yes
Perform repair or diagnosis according to the available Service Information.
•  If the vehicle is not repaired, go to the next step.
No
Go to the next step.
4
VERIFY CURRENT INPUT SIGNAL STATUS IS CONCERN INTERMITTENT OR CONSTANT
•  Clear the DTC from the PCM memory using the M-MDS.
•  Start the engine.
•  Perform the KOER self test.
•  Is the PENDING CODE for this DTC present?
Yes
Go to the next step.
No
Intermittent concern exists.
•  Perform the “INTERMITTENT CONCERN TROUBLESHOOTING” procedure.
5
INSPECT FUEL LINE
•  Switch the ignition to off.
•  Inspect the fuel lines of the suspected cylinder for fuel leakage or clogging.
•  Is there any malfunction?
Yes
Repair or replace the malfunctioning part according to the inspection results, then go to Step 16.
No
Go to the next step.
6
VERIFY CURRENT INPUT SIGNAL STATUS
•  Access the following PIDs using the M-MDS:
―  APP
―  O2S11
―  BOO
―  RPM
―  ECT
―  SEGRP
―  IAT
―  MAF
―  VSS
•  Is there any signal that is far out of specification when the ignition is switched to ON and the engine idles?
Yes
Inspect the suspected sensor and related wiring harness.
•  If there is any malfunction:
―  Repair or replace the malfunctioning part according to the inspection results, then go to Step 16.
•  If there is no malfunction:
―  Go to the next step.
No
Go to the next step.
7
VERIFY CURRENT INPUT SIGNAL STATUS UNDER FREEZE FRAME DATA (MODE 2) CONDITION
Caution
•  While performing this step, always operate the vehicle in a safe and lawful manner.
•  When the M-MDS is used to observe monitor system status while driving, be sure to have another technician with you, or record the data in the M-MDS using the PID/DATA MONITOR AND RECORD capturing function and inspect later.
•  Access the same PIDs as in Step 6 while simulating under the FREEZE FRAME DATA (Mode 2) conditions.
•  Is there any signal which causes drastic changes?
Yes
Inspect the suspected sensor and related wiring harness.
•  If there is any malfunction:
―  Repair or replace the malfunctioning part according to the inspection results, then go to Step 16.
•  If there is no malfunction:
―  Go to the next step.
No
Go to the next step.
8
INSPECT CKP SENSOR
•  Inspect the CKP sensor and the flywheel.
•  Is there any malfunction?
Yes
Repair or replace the malfunctioning part according to the inspection results, then go to Step 16.
(See CRANKSHAFT POSITION (CKP) SENSOR REMOVAL/INSTALLATION [MZR-CD 2.2].)
No
Go to the next step.
9
INSPECT CMP SENSOR
•  Inspect the CMP sensor.
•  Is there any malfunction?
Yes
Replace the CMP sensor, then go to Step 16.
(See CAMSHAFT POSITION (CMP) SENSOR REMOVAL/INSTALLATION [MZR-CD 2.2].)
No
Go to the next step.
10
VERIFY CURRENT INPUT SIGNAL STATUS OF MAF SENSOR
•  Start the engine.
•  Access the MAF PID using the M-MDS.
•  Race the engine and verify that the MAF PID value changes quickly according to change in the engine speed.
•  Is the MAF PID response normal?
Yes
Go to Step 13.
No
Go to the next step.
11
INSPECT AIR RESTRICTION OR LEAKAGE AT INTAKE-AIR SYSTEM
•  Inspect for air restrict or leakage between intake manifold and MAF sensor.
•  Is there any malfunction?
Yes
Repair or replace the malfunctioning part according to the inspection results, then go to Step 16.
No
Go to the next step.
12
INSPECT TURBOCHARGER
•  Inspect the turbocharger.
•  Is there any malfunction?
Yes
Replace the turbocharger, then go to Step 16.
(See EXHAUST SYSTEM REMOVAL/INSTALLATION [MZR-CD 2.2].)
No
Replace the MAF/IAT sensor, then go to Step 16.
(See INTAKE-AIR SYSTEM REMOVAL/INSTALLATION [MZR-CD 2.2].)
13
INSPECT ENGINE COOLANT PASSAGE FOR ENGINE COOLANT LEAKAGE
•  Perform the “ENGINE COOLANT LEAKAGE INSPECTION”.
•  Is there any malfunction?
Yes
Repair or replace the malfunctioning part according to the inspection results, then go to Step 16.
No
Go to the next step.
14
INSPECT ENGINE COMPRESSION
•  Inspect the engine compression for suspected cylinder.
•  Is there any malfunction?
Yes
Overhaul the engine for repairs, then go to Step 16.
No
Go to the next step.
15
INSPECT FUEL INJECTOR
•  Perform the Fuel Injector Operation Inspection for suspected cylinder.
•  Is there any malfunction?
Yes
Repair or replace the malfunctioning part according to the inspection results, then go to the next step.
No
Go to the next step.
16
VERIFY DTC TROUBLESHOOTING COMPLETED
•  Make sure to reconnect all disconnected connectors.
•  Clear the DTC from the PCM memory using the M-MDS.
•  Perform the Repair Verification Drive Mode.
•  Is the PENDING CODE for this DTC present?
Yes
Replace the PCM, then go to the next step.
(See PCM REMOVAL/INSTALLATION [MZR-CD 2.2].)
No
Go to the next step.
17
VERIFY AFTER REPAIR PROCEDURE
•  Perform the “AFTER REPAIR PROCEDURE”.
•  Are any DTCs present?
Yes
Go to the applicable DTC inspection.
(See DTC TABLE [MZR-CD 2.2].)
No
DTC troubleshooting completed.