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Home >> Chevrolet >> 2018 >> Suburban 3500 HD LT >> Repair and Diagnosis >> External Pages >> Different car >> Section 9 (Engine Controls And Fuel - 5.3L (L83) Or 6.2L (L86) - DTC P0443 To DTC P3452 And Diagnostic Information And Procedures) >> Diagnostic Information And Procedures >> DTC P10E1, P10E2, P10E3, P10E4: Ignition On/Start Circuit Source Bypass Relay Control Circuit >> Circuit/System Description

Circuit/System Description

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For an overview of the component/system, refer to Fuel System Description

Circuit Description
B+ - Relay Coil Supplied directly from the battery.
Control - Relay Coil The output circuit is switched to ground to activate the component.
Component Description
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.
KR171 Engine Control Module Wake-Up Relay Relays are used to control a high power circuit with a low power signal.
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