Circuit/System Description

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

For an overview of the component/system, refer to: Glow Plug System Description

Circuit	Description
Control	The output circuit is switched to 10 V to activate the component.When the output is commanded On, the voltage can range between 4.7 and 10 V. The output is PWM controlled.

Component	Description
E12 Glow Plug	Glow plugs are electric heating devices in the combustion chambers of diesel engines. Depending on ambient and coolant temperature the glow plugs are activated for different times: Before and after the engine was started Before the engine has started Not at all The glow time indicator needs to go off after the engine has started to indicate that the system is working properly, even when the glow plugs are still active. To activate the glow plugs, the engine control module itself supplies the glow plugs with voltage. This voltage is regulated so that the glow plugs don't overheat.
K20 Engine Control Module	The control module contains a microprocessor used to process input data to control outputs. The control module controls a series of actuators to ensure optimal engine performance. The control module does this by reading values from a variety of sensors, interprets the data and adjusts the engine actuators accordingly.

Component

Description

E12 Glow Plug

Glow plugs are electric heating devices in the combustion chambers of diesel engines.
Depending on ambient and coolant temperature the glow plugs are activated for different times:

Before and after the engine was started
Before the engine has started
Not at all

The glow time indicator needs to go off after the engine has started to indicate that the system is working properly, even when the glow plugs are still active.
To activate the glow plugs, the engine control module itself supplies the glow plugs with voltage. This voltage is regulated so that the glow plugs don't overheat.

K20 Engine Control Module

The control module contains a microprocessor used to process input data to control outputs.
The control module controls a series of actuators to ensure optimal engine performance. The control module does this by reading values from a variety of sensors, interprets the data and adjusts the engine actuators accordingly.