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Home >> Chrysler >> 2012 >> 300 C, 4WD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 23 (Transmission Control Module (TCM) - DTCS P1D94 To U1479 - 8HP45 Automatic Transmission) >> Diagnosis And Testing >> P1DAD-Input Shaft/Output Shaft Direction Correlation >> Theory Of Operation

Theory Of Operation

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The purpose of the diagnostic is to detect an unwanted driving direction. A rationality check is performed between the measured directions of input speed and output speed signal and the calculated driving direction. The calculated driving direction is based on the commanded currents of the pressure regulators.