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Home >> Cadillac >> 2014 >> Escalade Base, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 6 (Transfer Case - Mp 3023/3024-NQH) >> Diagnostic Information and Procedures >> DTC C0306: Motor A or B Circuit >> Circuit/System Description

Circuit/System Description

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The transfer case encoder motor (TCEM) is a bi-directional, permanent magnet, DC motor. When energized, through motor control A or motor control B, the ground is provided by the opposing motor control circuit which becomes grounded through the transfer case shift control module (TCCM) ground circuit. The TCEM, 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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