P1D74 DODGE - Gear Shift Actuator 'B' Position Out Of Range
- Transmission Hydraulic System
- Transmission Mehanical Operation
- Faulty Transmission Control module (TCM)
- Engine Light ON (or Service Engine Soon Warning Light)
P1d74 Dodge DescriptionThis diagnostic compares the gear shift actuator 2nd-4th position to a minimum and maximum threshold values of allowable mechanical positions. The actuator position is read by a position sensor which provides an output signal with Pulse Width Modulation (PWM) at a fixed frequency and duty cycle proportional to the position of the actuator. The PWM duty cycle electrical range is between 10% and 90%. If the position sensor signal is within this electrical range but it indicates the actuator position is outside of its expected mechanical travel, then the diagnostic will be considered failing.
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