Glow Plugs
| ITEM | DESCRIPTION |
|---|---|
| 1 | Glow plug (4 off) |
| 2 | Glow plug harness |
The glow plug system has a glow plug installed in the inlet side of each cylinder. The glow plugs heat the combustion chambers before and during cranking, to aid cold starting, and after the engine starts to reduce emissions and engine noise when idling with a cold engine. The glow plugs are connected by a common harness which is connected into the main engine harness. The glow plugs are connected directly to a glow plug control module which is controlled by glow plug software contained within the Powertrain Control Module (PCM). The glow plug control module is located in the right side of the engine compartment, below the Engine Junction Box (EJB).
Glow Plug Control Module Location
Each glow plug is a tubular heating element which contains a spiral filament encased in magnesium oxide powder. At the tip of the tubular heating element is the heater coil. Behind the heater coil, and connected in series, is a control coil. The control coil regulates the current to the heater coil to safeguard against overheating.
In the event of glow plug failure, the engine may be difficult to start and excessive smoke emissions may be observed after starting.