Set Condition
WARNING: This page is about a different car, the 2016 RAM 3500 HD and 2016 RAM 2500 HD. However, it is still accessible from the selected car via links, so may be relevant.
With the Intake Air Heater Relay commanded on, the Powertrain Control Module (PCM) is not reading any voltage on the Intake Air Heater Relay Control Return circuit.