Glow Plug Control Module
The glow plug control module switches and monitors the glow plugs of a diesel engine.
What is Glow Plug Control Module?
It replaces a simple relay on modern diesels. It can run after-glow to reduce smoke and noise after start. It reports faulty plugs. Modern ceramic plugs heat very fast and are often controlled by pulse width; the module can detect an open circuit in each plug and set a cylinder-specific code. Some systems also glow while the engine runs to clean the filter or reduce noise.
How it works
It powers the plugs for set times based on coolant temperature.
Why it matters for your car
A faulty module causes hard cold starts and glow plug warnings. Check plugs and wiring before replacing the module.
Other terms
- A/C Evaporator
- AdBlue Heater
- Blow-by
- Brake Fluid DOT Ratings
- Brake Pad Wear Sensor
- Clutch Judder
- Dealer Warranty (Used-Car Warranty)
- Defensive Driving
- Engine Speed (Rpm)
- Gearbox Mount (Transmission Mount)
- Iridium Spark Plug
- Parallel Parking
- Start-stop System
- Steering Wheel
- Tyre Dressing
- Vehicle Tax (Road Tax)
- Wheel Arch Rust
- Wheel Horsepower (WHP)
- Whiplash Protection (Active Head Restraints)
- Winter Tyre