Diagnostic Test

WARNING: This page is about a different car, the 2013 RAM 3500 HD and 2013 RAM 2500 HD. However, it is still accessible from the selected car via links, so may be relevant.

CHECK THE COOLING SYSTEM FOR LEAKS
1. Pressure test the cooling system.
  Is the cooling system holding pressure?
  
  Yes
  - Go To 2
  No
  - Diagnose and repair the coolant leak. We are looking for coolant leaking into the combustion chamber. Check EGR Cooler for internal cracks. If the cooler is not leaking then check the engine internally for faulty cylinder head gasket, or cracks to the cylinder head or block.
VERIFY CONDITION
NOTE:
Some white smoke from the tail pipe during initial start up is normal, especially during cold ambient temperatures. If the white smoke is excessive, continue with this test.
1. Allow the engine to cool to ambient temperature if possible.
2. Start the engine and allow it to idle monitoring smoke during warm up.
  Is the white smoke occurring during cold ambient temperatures at initial start up ONLY?
  
  Yes
  - Condition is normal. Verify proper operation of the Intake and Fuel Heaters.
  No
  - Go To 3
CHECK THE ENGINE COOLANT THERMOSTAT
1. Verify the operation of the cooling system Thermostat.
  Does the engine heat up properly to operating temperature?
  
  Yes
  - Go To 4
  No
  - Replace the cooling system Thermostat.
CHECK THE FUEL HEATER OPERATION
1. Verify that the Fuel Heater and temperature sensor is operating properly.
  Is the fuel heater system operating normal?
  
  Yes
  - Go To 5
  No
  - Diagnose and repair the Fuel Heater system as necessary.
CHECK FOR IMPROPER FUEL OR CONTAMINATION
1. Perform the DIESEL FUEL CONTAMINATION AND CLEANING PROCEDURE. Refer to DIAGNOSIS AND TESTING, 6.7L .
  Is the fuel improper or contaminated with debris?
  
  Yes
  - Follow step three of the DIESEL FUEL CONTAMINATION AND CLEANING PROCEDURE and clean the diesel fuel system and Fuel Injectors.
  - Perform the AFTERTREATMENT INSPECTION GUIDELINE procedure. Refer to DIAGNOSIS AND TESTING, 6.7L .
  No
  - Go To 6
CHECKING CYLINDER CONTRIBUTION
1. Using the scan tool, navigate to Miscellaneous Functions perform the Cylinder Kill test procedure.
  NOTE:
  This test will kill each cylinder one at a time. There is a subsequent drop in RPM when this occurs. Each cylinder should drop approximately the same amount of RPM.
  
  Do the results indicate that the RPM dropped an unusual amount for a cylinder compared to the others?
  
  Yes
  - Refer to the CHECKING ENGINE MISFIRE / RUNS ROUGH / PERFORMANCE TEST and begin at test step 5 for diagnosing a single cylinder issue. Refer to DIAGNOSIS AND TESTING, 6.7L .
  No
  - Go To 7
CHECK THE FUEL DELIVERY SYSTEM
1. Perform the CHECKING THE FUEL DELIVERY SYSTEM test procedure. Refer to DIAGNOSIS AND TESTING, 6.7L .
  Were any problems found?
  
  Yes
  - Perform the appropriate repair.
  - Perform the AFTERTREATMENT INSPECTION GUIDELINE procedure. Refer to DIAGNOSIS AND TESTING, 6.7L .
  No
  - Refer to the CHECKING ENGINE MISFIRE / RUNS ROUGH / PERFORMANCE TEST and begin at test step 8 . Refer to DIAGNOSIS AND TESTING, 6.7L .