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Home >> Buick >> 2019 >> Encore Base >> Repair and Diagnosis >> Electrical >> Charging Systems >> Battery, Charging System And Starting System >> Diagnostic Information and Procedures >> DTC P156D >> Circuit/System Description

Circuit/System Description

Component Description
T19 Power Supply Transformer DC to DC voltage power supply that maintains a steady output voltage.

The device serves as a voltage stabilizer for several vehicle systems by compensating the voltage drop that the starter motor causes while starting the engine.

For an overview of the component/system, refer to:Stop/Start System Description and Operation (KL9 with LE2)