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 FOR INFORMATION RELATED TO THIS DTC
1. Check for related Service Bulletins and Star Online Cases.
  Were any related Service Bulletins or Star Online Cases available?
  
  Yes
  - Repair the condition by performing the related procedures outlined in the Service Bulletin or Star Online Case.
  - Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .
  No
  - Go To 2
CHECK FOR AN ACTIVE CONDITION
1. Turn the ignition on.
2. With the scan tool, navigate to System Test and start the ESIM Forced Monitor Test. Allow the test to run until finished.
3. Read the Large Leak test results.
  NOTE:
  This is a test of the overall operation of the evaporative system components. It does not necessarily indicate that a large leak was the failure.
  
  Did the Large Leak test pass or fail?
  
  Passed
  - Go To 3
  Failed
  - Go To 4
CHECK THE ESIM SWITCH FOR PROPER INSTALLATION
1. Turn the ignition off.
2. Check the ESIM switch for proper installation. (The connector should be in the 3 O'clock position.)
  NOTE:
  If the switch is not in the proper orientation, it may cause the weighted pressure and vacuum vents to intermittently not seal correctly. The leak may not be large enough to consistently fail the Large Leak test.
  
  Is the ESIM Switch connector in the 3 O'clock position?
  
  Yes
  - Perform the P0456-EVAP SYSTEM SMALL LEAK DTC diagnostic procedure to verify the system is not leaking. Refer to 5.7L - DIAGNOSTIC CODE INDEX - 2500 HD & 3500 HD . The condition that caused the large leak fault is either not present at this time or the leak is not large enough to consistently fail the Large Leak test.
  No
  - Repair the misoriented ESIM Switch. Install the ESIM SWITCH so the connector is in the 3 O'clock position.
  - Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .
EVAPORATIVE EMISSION LEAK DETECTION
1. To continue testing you will need the (special tool #8404C, Kit, EELD And Accessory).
2. Connect the red power lead of the EELD to the Battery positive terminal and the black ground lead to Battery negative terminal.
3. Connect shop air to the EELD.
4. Connect the service adapter (special tool #8404-ADP, Smoke Machine Adapters) to the ESIM Switch.
5. Connect the SMOKE supply tip (black hose) to the adapter.
6. Set the smoke/air control switch to SMOKE.
7. Press the remote smoke/air start button.
  NOTE:
  Make sure that smoke has filled the EVAP System by continuing to press the remote smoke/air start button, remove the vehicle fuel cap (if applicable) or open the flap (capless), and wait for the smoke to exit. Once smoke is indicated reinstall the fuel cap or close the flap.
  
  NOTE:
  For optimal performance, introduce smoke into the system for an additional 60 seconds; continue introducing smoke at 15 second intervals, as necessary.
8. While still holding the remote smoke/air start button, use the white light (special tool #8404-CLL, Light, White) to follow the EVAP system path, and look for the source of the leak indicated by exiting smoke.
9. If a leak is concealed from view (i.e., top of fuel tank), release the remote smoke/air start button, and use the ultraviolet (UV) black light (special tool #8404-UVL, Light, UV) and the yellow goggles (special tool #8404-20, Goggles, Yellow) to look for residual traces of dye that is left behind by the smoke.
10. The exiting smoke deposits a residual fluid that is either bright green, yellow or purple in color when viewed with a UV light.
  NOTE:
  Carefully inspect the vent side of the EVAP Canister. Due to the filtering system in the canister the smoke may not be as thick. Introducing smoke into the filtered side of the canister may assist in locating the leak.
11. Disconnect the vacuum hose that connects to the Intake Manifold side of the Purge Solenoid and check for smoke coming through the Purge Solenoid.
  Select the appropriate response from the list below:
  
  A leak was found at the Fuel Cap (if applicable) or Fuel Filler Tube Assembly;
  - Replace the Fuel Filler Tube Assembly and/or the Fuel Cap (if applicable) in accordance with the Service Information.
  - Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .
  A leak was found in the EVAP System
  - Repair the leaks as necessary. Ensure the leak is not at the hose connection. Verify that the system is not leaking by performing the ESIM Forced Monitor Test.
  - Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .
  No leaks were detected
  - Replace the ESIM Switch in accordance with the Service Information. Verify that the system is not leaking by performing the ESIM Forced Monitor Test.
  - Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .