This procedure lets one verify the Instrument Cluster functionality on a '09 Ram, I don't know if it works on later models.

SELF TEST

The instrument cluster self test will put the instrument cluster into its self-diagnostic mode. In this mode the instrument cluster can perform a self-diagnostic test that will confirm that the instrument cluster circuitry, the gauges, and the indicators are capable of operating as designed. During the self test the instrument cluster circuitry will position each of the gauge needles at various calibration points, illuminate all of the segments or portions in the Liquid Crystal Display (LCD) unit, and turn all of the indicators ON and OFF again.
Successful completion of the self test will confirm that the instrument cluster is operational. However, there may still be a problem with the CAN data bus, the Powertrain Control Module (PCM), the Totally Integrated Power Module (TIPM), the Transmission Control Module (TCM), the Occupant Restraint Controller (ORC), the Controller Anti-lock Brake (CAB), the Wireless Ignition Node (WIN) or the hardwired inputs to one of these electronic control modules. Use a diagnostic scan tool to diagnose these components. Refer to the appropriate diagnostic information.
1.
Begin the test with the ignition switch in the OFF position.

2.
Depress the odometer/trip odometer switch button.

3.
While still holding the odometer/trip odometer switch button depressed, turn the ignition switch to the ON position, but do not start the engine.

4.
Release the odometer/trip odometer switch button.

5.
The instrument cluster will simultaneously begin to illuminate all of the operational segments in the LCD unit and perform a bulb check of each operational Light Emitting Diode (LED) indicator. The LCD segments and LED indicators remain illuminated as each gauge needle is swept to several calibration points and back. If a VFD segment or an LED indicator fails to illuminate, or if a gauge needle fails to sweep through the calibration points and back during this test, the instrument cluster must be replaced.

6.
The self test is now completed. The instrument cluster will automatically exit the self-diagnostic mode and return to normal operation at the completion of the test. The self test will be aborted if the ignition switch is turned to the OFF position, or if a vehicle speed message indicating that the vehicle is moving is received from the PCM over the CAN data bus during the test.

7.
Go back to Step #1to repeat the test, if necessary.

 

Cool.

Do you know if there is a way to display a diagnostic mode within the EVIC? On my previous Chrysler 300C you could hold 2 buttons down on the steering wheel for 10 seconds and it put the EVIC into a diagnostic mode. One of the features was a digital speedometer and the system would maintain the diagnostic mode evan after you shut off the car so the next time you drove the same digital speedo display would be active. I really like a digital speedometer and I'd like to have one in my Ram.

 

that works on my 2010

 

How exactly do you bring on the digital speedometer? I'd really like to get this to work. Give the step-by-step please.

 

What digital speedometer?

 

i thought digital speedo was a ford thing?? i can access digital speedo/tach on my mustang and my buddies can do it in their f150/250/350's.

you just hold the trip down and turn the key to on (as stated above) then let it go and you can press the trip to access a bunch of stuff.

hmmm i have yet to try the "test" on the 09 ram. now i'm curious!

i remember my 04 would go through certain things. never digi speedo though!?