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Home >> Cadillac >> 2018 >> Escalade ESV Platinum, RWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 1 (Transfer Case - Mp 3023/3024 (NQH)) >> Diagnostic Information And Procedures >> DTC C0306 Or C0381: Range Actuator Control Circuit/Range Actuator System Performance High Temperature >> Circuit/System Description

Circuit/System Description

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The A16 Transfer Case Motor, also known as the transfer case range actuator, is a bi-directional, permanent magnet, DC motor. When energized, through the transfer case clockwise circuit or transfer case counter-clockwise circuit, the ground is provided by the opposing motor control circuit which becomes grounded through the transfer case control module ground circuit. The transfer case range actuator, through a series of gears, rotates the transfer case control actuator shaft which moves the transfer case two/four wheel drive actuator cam and transfer case high/low shift fork in order to shift the transfer case between the following modes or ranges:

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