Glow Plug System - TDV6 3.0L Diesel (G2006281): Operation: Preheating

WARNING: This page is about a different variant/trim than selected.

Preheat is the length of time the glow plugs operate before engine cranking. The Powertrain Control Module (PCM) controls the preheat time based on the Engine Coolant Temperature (ECT) sensor signal. The preheat duration is extended if the coolant temperature is low.

When the driver operates the stop/start switch to crank the engine (power mode 9), the PCM calculates any required glow plug heating times. If heating is required, the PCM signals the glow plug control module, which supplies power to the glow plugs. When preheating is required, the PCM also sends a message to the Instrument Cluster (IC). The signal is sent on the High Speed (HS) Controller Area Network (CAN) powertrain Bus, to request illumination of the glow plug warning indicator. The glow plug warning indicator stays on for the duration of the preheating phase, until the PCM cranks the engine. If required, the glow plug control module supplies power to the glow plugs during cranking and for the duration of any post heating phase.