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Home >> Cadillac >> 2016 >> ATS Base, 2D Coupe, RWD, Automatic Trans >> Repair and Diagnosis >> Electrical >> Charging Systems >> Battery, Charging System And Starting System >> Diagnostic Information and Procedures >> DTC P1066: Stop-Start Capacitor Control Module Status Message Counter >> Circuit/System Description
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Circuit/System Description

The stop/start capacitor is switched in series to the standard battery by the stop/start capacitor control module during engine restarts to boost voltage. The stop/start capacitor control module communicates to the ECM and monitors the messages it receives from the ECM.