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Home >> Chevrolet >> 2022 >> Tahoe PPV, RWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 13 (Engine Controls And Fuel - 3.0L (Lm2) Diesel - Diagnostic Information And Procedures (4 Of 5)) >> Diagnostic Information and Procedures >> DTC P143C, P20C1-P20C4, P221E, or P221F >> Circuit/System Description

Circuit/System Description

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

For an overview of the component/system, refer to: Exhaust Aftertreatment System Description

Circuit Description
Control - Terminal 10 The output circuit is switched to 12 V to activate the component.
Control - Terminal 15 The output circuit is switched to ground to enable the component(s).