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Home >> GMC >> 2018 >> Terrain SL >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Anti-Theft Systems >> Power Door Lock System And Release Systems >> Diagnostic Information And Procedures >> DTC B153E: Liftgate Position Sensor Signal Circuit >> Circuit/System Description

Circuit/System Description

For an overview of the component/system, refer to: Liftgate Description and Operation 

Circuit Description
12 V Reference Regulated voltage supplied by the control module.
Liftgate Position Sensor 1 Signal Circuit The control module input circuit has an internal resistance connected to 12 V.
Liftgate Position Sensor 2 Signal Circuit The control module input circuit has an internal resistance connected to 12 V.
Low Reference Grounded through the control module.
Component Description
M17 Liftgate Motor Assembly
  • The motor M17 is a bidirectional DC motor that moves the component: Power Liftgate (TB5)
  • The assembly also contains a 4-wire hall effect current sensor.
  • When the sensor measures increased electrical current, the control module can detect that the component has reached an endstop.
K39 Liftgate Control Module The control module K39 controls the liftgate motor function depending on inputs from a variety of sensors, switches and serial data information from other control modules.
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