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Home >> Cadillac >> 2021 >> CT4 Sport, 4WD >> Repair and Diagnosis >> External Pages >> Different car >> Section 121 (Engine Controls And Fuel - 2.0L (LSY) - Diagnostic Information And Procedures (3 Of 3)) >> Diagnostic Information and Procedures >> DTC P146D-P146F >> Circuit/System Description

Circuit/System Description

WARNING: This page is about a different car, the 2022 Cadillac CT4. However, it is still accessible from the selected car via links, so may be relevant.

For an overview of the component/system, refer to: Evaporative Emission Control System Description

Circuit Description
5 V Reference Regulated voltage supplied by the control module.
Signal The control module input circuit has an internal resistance connected to ground.
Low Reference Grounded through the control module.
Component Description
Evaporative Emission Canister Purge Pump Pressure Sensor The pressure sensor is a 3 wire piezo-resistive pressure transducer.
The sensor measures the pressure in the component: Evaporative Emission Canister Purge Pump
The sensor is integrated within the component: G58 Evaporative Emission Canister Purge Pump
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 sensors, interprets the data and adjusts the engine actuators accordingly.
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