2006 DODGE RAM SRT-10 Compression

P0301-CYLINDER # 1 MISFIRE
For a complete wiring diagramRefer to Section 8W.
When Monitored:
While the engine is idling at operating temperature.
Set Condition:
Misfire detected on this cylinder.
Possible Causes
LOW FUEL
OTHER DTC’S
DAMAGED FUEL LINE
VA LV E T R A I N
OBSTRUCTED FUEL INJECTOR SUPPLY LINE
DAMAGED OR OBSTRUCTED HIGH PRESSURE CONNECTOR
EXTERNAL DAMAGED FUEL INJECTOR
INTERNAL DAMAGED FUEL INJECTOR
NO COMPRESSION
EXCESSIVE ENGINE LEAK DOWN
Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. (Refer to 9 - ENGINE -
DIAGNOSIS AND TESTING)
Diagnostic Test
1.LOW FUEL
Using the scan tool, verify that the fuel level is above 15%.
Is the fuel level above 15%?
Ye s>>
Go To 2
No>>
Addfuelgotostep2.
Perform POWERTRAIN VERIFICATION TEST VER - 1 (DIESEL). (Refer to 8 - ELECTRICAL/ELEC-
TRONIC CONTROL MODULES/ENGINE CONTROL MODULE - DIAGNOSIS AND TESTING)
2.OTHER DTC’S
Read the Freeze frame data.
Is the DTC equal to the freeze frame DTC?
Ye s>>
Go To 3
No>>
Repair any other DTC’s first.
Perform POWERTRAIN VERIFICATION TEST VER - 1 (DIESEL). (Refer to 8 - ELECTRICAL/ELEC-
TRONIC CONTROL MODULES/ENGINE CONTROL MODULE - DIAGNOSIS AND TESTING)

8.INTERNAL DAMAGED FUEL INJECTOR
With the scan tool, erase DTCs.
Switch the misfiring injector & high pressure connector with an injector &high pressure connector from a cylinder
that is firing properly.
Operate the vehicle.
Did the misfire DTC follow the suspect injectors & high pressure connectors?
Ye s>>
Replace the internal damaged fuel injector and high pressure connector.
Perform POWERTRAIN VERIFICATION TEST VER - 1 (DIESEL). (Refer to 8 - ELECTRICAL/ELEC-
TRONIC CONTROL MODULES/ENGINE CONTROL MODULE - DIAGNOSIS AND TESTING)
No>>
Go To 9
9.INTERNAL ENGINE DAMAGE
Perform engine compression test
Did the suspect cylinders pass the compression test?
Ye s>>
Go To 10
No>>
Repair the internal damage to the engine.
Perform POWERTRAIN VERIFICATION TEST VER - 1 (DIESEL). (Refer to 8 - ELECTRICAL/ELEC-
TRONIC CONTROL MODULES/ENGINE CONTROL MODULE - DIAGNOSIS AND TESTING)
10.INTERNAL ENGINE DAMAGE
Perform engine leak down test
Did the suspect cylinders pass the leak down test?
Ye s>>
Te s t C o m p l e t e .
No>>
Repair the internal damage to the engine.
Perform POWERTRAIN VERIFICATION TEST VER - 1 (DIESEL). (Refer to 8 - ELECTRICAL/ELEC-
TRONIC CONTROL MODULES/ENGINE CONTROL MODULE - DIAGNOSIS AND TESTING)

P0302-CYLINDER # 2 MISFIRE
For a complete wiring diagramRefer to Section 8W.
When Monitored:
While the engine is idling at operating temperature.
Set Condition:
Misfire detected on this cylinder.
Possible Causes
LOW FUEL
OTHER DTC’S
DAMAGED FUEL LINE
VA LV E T R A I N
OBSTRUCTED FUEL INJECTOR SUPPLY LINE
DAMAGED OR OBSTRUCTED HIGH PRESSURE CONNECTOR
EXTERNAL DAMAGED FUEL INJECTOR
INTERNAL DAMAGED FUEL INJECTOR
NO COMPRESSION
EXCESSIVE ENGINE LEAK DOWN
Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. (Refer to 9 - ENGINE -
DIAGNOSIS AND TESTING)
Diagnostic Test
1.LOW FUEL
Using the scan tool, verify that the fuel level is above 15%.
Is the fuel level above 15%?
Ye s>>
Go To 2
No>>
Addfuelgotostep2.
Perform POWERTRAIN VERIFICATION TEST VER - 1 (DIESEL). (Refer to 8 - ELECTRICAL/ELEC-
TRONIC CONTROL MODULES/ENGINE CONTROL MODULE - DIAGNOSIS AND TESTING)
2.OTHER DTC’S
Read the Freeze frame data.
Is the DTC equal to the freeze frame DTC?
Ye s>>
Go To 3
No>>
Repair any other DTC’s first.
Perform POWERTRAIN VERIFICATION TEST VER - 1 (DIESEL). (Refer to 8 - ELECTRICAL/ELEC-
TRONIC CONTROL MODULES/ENGINE CONTROL MODULE - DIAGNOSIS AND TESTING)

8.INTERNAL DAMAGED FUEL INJECTOR
With the scan tool, erase DTCs.
Switch the misfiring injector & high pressure connector with an injector &high pressure connector from a cylinder
that is firing properly.
Operate the vehicle.
Did the misfire DTC follow the suspect injector & high pressure connector?
Ye s>>
Replace the internal damaged fuel injector and high pressure connector.
Perform POWERTRAIN VERIFICATION TEST VER - 1 (DIESEL). (Refer to 8 - ELECTRICAL/ELEC-
TRONIC CONTROL MODULES/ENGINE CONTROL MODULE - DIAGNOSIS AND TESTING)
No>>
Go To 9
9.INTERNAL ENGINE DAMAGE
Perform engine compression test
Did the suspect cylinders pass the compression test?
Ye s>>
Go To 10
No>>
Repair the internal damage to the engine.
Perform POWERTRAIN VERIFICATION TEST VER - 1 (DIESEL). (Refer to 8 - ELECTRICAL/ELEC-
TRONIC CONTROL MODULES/ENGINE CONTROL MODULE - DIAGNOSIS AND TESTING)
10.INTERNAL ENGINE DAMAGE
Perform engine leak down test
Did the suspect cylinders pass the leak down test?
Ye s>>
Te s t C o m p l e t e .
No>>
Repair the internal damage to the engine.
Perform POWERTRAIN VERIFICATION TEST VER - 1 (DIESEL). (Refer to 8 - ELECTRICAL/ELEC-
TRONIC CONTROL MODULES/ENGINE CONTROL MODULE - DIAGNOSIS AND TESTING)

P0303-CYLINDER # 3 MISFIRE
For a complete wiring diagramRefer to Section 8W.
When Monitored:
While the engine is idling at operating temperature.
Set Condition:
Misfire detected on this cylinder.
Possible Causes
LOW FUEL
OTHER DTC’S
DAMAGED FUEL LINE
VA LV E T R A I N
OBSTRUCTED FUEL INJECTOR SUPPLY LINE
DAMAGED OR OBSTRUCTED HIGH PRESSURE CONNECTOR
EXTERNAL DAMAGED FUEL INJECTOR
INTERNAL DAMAGED FUEL INJECTOR
NO COMPRESSION
EXCESSIVE ENGINE LEAK DOWN
Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. (Refer to 9 - ENGINE -
DIAGNOSIS AND TESTING)
Diagnostic Test
1.LOW FUEL
Using the scan tool, verify that the fuel level is above 15%.
Is the fuel level above 15%?
Ye s>>
Go To 2
No>>
Addfuelgotostep2.
Perform POWERTRAIN VERIFICATION TEST VER - 1 (DIESEL). (Refer to 8 - ELECTRICAL/ELEC-
TRONIC CONTROL MODULES/ENGINE CONTROL MODULE - DIAGNOSIS AND TESTING)
2.OTHER DTC’S
Read the Freeze frame data.
Is the DTC equal to the freeze frame DTC?
Ye s>>
Go To 3
No>>
Repair any other DTC’s first.
Perform POWERTRAIN VERIFICATION TEST VER - 1 (DIESEL). (Refer to 8 - ELECTRICAL/ELEC-
TRONIC CONTROL MODULES/ENGINE CONTROL MODULE - DIAGNOSIS AND TESTING)

8.INTERNAL DAMAGED FUEL INJECTOR
With the scan tool, erase DTCs.
Switch the misfiring injector & high pressure connector with an injector &high pressure connector from a cylinder
that are firing properly.
Operate the vehicle.
Did the misfire DTC follow the suspect injectors & high pressure connectors?
Ye s>>
Replace the internal damaged fuel injector and high pressure connector.
Perform POWERTRAIN VERIFICATION TEST VER - 1 (DIESEL). (Refer to 8 - ELECTRICAL/ELEC-
TRONIC CONTROL MODULES/ENGINE CONTROL MODULE - DIAGNOSIS AND TESTING)
No>>
Go To 9
9.INTERNAL ENGINE DAMAGE
Perform engine compression test
Did the suspect cylinders pass the compression test?
Ye s>>
Go To 10
No>>
Repair the internal damage to the engine.
Perform POWERTRAIN VERIFICATION TEST VER - 1 (DIESEL). (Refer to 8 - ELECTRICAL/ELEC-
TRONIC CONTROL MODULES/ENGINE CONTROL MODULE - DIAGNOSIS AND TESTING)
10.INTERNAL ENGINE DAMAGE
Perform engine leak down test
Did the suspect cylinders pass the leak down test?
Ye s>>
Te s t C o m p l e t e .
No>>
Repair the internal damage to the engine.
Perform POWERTRAIN VERIFICATION TEST VER - 1 (DIESEL). (Refer to 8 - ELECTRICAL/ELEC-
TRONIC CONTROL MODULES/ENGINE CONTROL MODULE - DIAGNOSIS AND TESTING)

P0304-CYLINDER # 4 MISFIRE
For a complete wiring diagramRefer to Section 8W.
When Monitored:
While the engine is idling at operating temperature.
Set Condition:
Misfire detected on this cylinder.
Possible Causes
LOW FUEL
OTHER DTC’S
DAMAGED FUEL LINE
VA LV E T R A I N
OBSTRUCTED FUEL INJECTOR SUPPLY LINE
DAMAGED OR OBSTRUCTED HIGH PRESSURE CONNECTOR
EXTERNAL DAMAGED FUEL INJECTOR
INTERNAL DAMAGED FUEL INJECTOR
NO COMPRESSION
EXCESSIVE ENGINE LEAK DOWN
Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. (Refer to 9 - ENGINE -
DIAGNOSIS AND TESTING)
Diagnostic Test
1.LOW FUEL
Using the scan tool, verify that the fuel level is above 15%.
Is the fuel level above 15%?
Ye s>>
Go To 2
No>>
Addfuelgotostep2.
Perform POWERTRAIN VERIFICATION TEST VER - 1 (DIESEL). (Refer to 8 - ELECTRICAL/ELEC-
TRONIC CONTROL MODULES/ENGINE CONTROL MODULE - DIAGNOSIS AND TESTING)
2.OTHER DTC’S
Read the Freeze frame data.
Is the DTC equal to the freeze frame DTC?
Ye s>>
Go To 3
No>>
Repair any other DTC’s first.
Perform POWERTRAIN VERIFICATION TEST VER - 1 (DIESEL). (Refer to 8 - ELECTRICAL/ELEC-
TRONIC CONTROL MODULES/ENGINE CONTROL MODULE - DIAGNOSIS AND TESTING)

8.INTERNAL DAMAGED FUEL INJECTOR
With the scan tool, erase DTCs.
Switch the misfiring injectors & high pressure connector with an injector& high pressure connector from a cylinder
that is firing properly.
Operate the vehicle.
Did the misfire DTC follow the suspect injectors & high pressure connectors?
Ye s>>
Replace the internal damaged fuel injector and high pressure connector.
Perform POWERTRAIN VERIFICATION TEST VER - 1 (DIESEL). (Refer to 8 - ELECTRICAL/ELEC-
TRONIC CONTROL MODULES/ENGINE CONTROL MODULE - DIAGNOSIS AND TESTING)
No>>
Go To 9
9.INTERNAL ENGINE DAMAGE
Perform engine compression test
Did the suspect cylinders pass the compression test?
Ye s>>
Go To 10
No>>
Repair the internal damage to the engine.
Perform POWERTRAIN VERIFICATION TEST VER - 1 (DIESEL). (Refer to 8 - ELECTRICAL/ELEC-
TRONIC CONTROL MODULES/ENGINE CONTROL MODULE - DIAGNOSIS AND TESTING)
10.INTERNAL ENGINE DAMAGE
Perform engine leak down test
Did the suspect cylinders pass the leak down test?
Ye s>>
Te s t C o m p l e t e .
No>>
Repair the internal damage to the engine.
Perform POWERTRAIN VERIFICATION TEST VER - 1 (DIESEL). (Refer to 8 - ELECTRICAL/ELEC-
TRONIC CONTROL MODULES/ENGINE CONTROL MODULE - DIAGNOSIS AND TESTING)