Down Stream Injection (DSI) System: Notes
Down Stream Injection [DSI] system (that includes Vaporizer Pump and Glow Plug) is used to aid in DPF regeneration on the 3.2L engine so as to reduce oil dilution associated with in-cylinder post injections.
DSI monitoring strategy includes circuit continuity checks for vaporizer pump and vaporizer glow plug, plausibility check for vaporizer glow plug relay, and DSI leakage monitor.