Glow Plug Control Module: Notes
The 6.0L diesel engine uses a glow plug system that preheats air in the combustion chamber to improve cold engine starting.
The glow plug system consists of the following components:
- Glow plugs
- Glow plug control module
- PCM
- Engine Oil Temperature (EOT) sensor
- Barometric Pressure (BARO) sensor
The glow plug monitor system is part of the On-Board Diagnostic (OBD) System.
The glow plug system is electronically controlled by the PCM. If the oil temperature is below 55°C (131°F), the PCM will energize the glow plugs immediately after the key is placed in the ON position. Then, depending on the readings from the EOT sensor and the BARO sensor, the PCM determines how long the glow plugs will be on.