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Home >> Chrysler >> 2011 >> 300 C, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 237 (DTCS P1D94 To U1479 - 8HP70 Automatic Transmission - 1500) >> Diagnosis And Testing >> P1DAD-Input Shaft/Output Shaft Direction Correlation >> Theory Of Operation

Theory Of Operation

WARNING: This page is about a different car, the 2013 RAM 1500. However, it is still accessible from the selected car via links, so may be relevant.

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.