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Home >> Chevrolet >> 2020 >> Express 2500 LS, 6.0L Eng VIN G >> Repair and Diagnosis >> External Pages >> Different car >> Section 54 (Engine Controls And Fuel - 2.8L (LWN) Diesel - Diagnostic Information And Procedures (2 Of 3)) >> Diagnostic Information and Procedures >> DTC P066A-P066F, P0671-P0674, P067A, or P067B >> Circuit/System Description

Circuit/System Description

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

Circuit Description
Control The output circuit is switched to 12 V to activate the component. When the output is commanded On, the voltage can range between 6. 8 and 12 V.
The output is PWM controlled.
Component Description
E12 Glow Plug Glow plugs are electric heating devices in the combustion chambers of diesel engines.
K20 Engine Control Module 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 sensor s, interprets the data and adjusts the engine actuators accordingly.
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