LEMON Manuals: Even more car manuals for everyone
Home >> Fiat >> 2014 >> 500L Easy, Standard Trans >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 3 (DTCS P0218-00 To P1CBF-00 - C635 DDCT Automatic Transmission - 500L) >> Diagnosis And Testing >> P0850-00-Park-Neutral Switch Performance >> Theory Of Operation

Theory Of Operation

WARNING: This page is about a different variant/trim than selected.

The shift lever uses a Hall Effect sensor for the Neutral position information. The TCM reads the analog output of the sensor. The sensor output indicates whether or not the Neutral mode is requested based upon two distinct voltage ranges. In these terms, the sensor is interpreted as a switch. If the sensor output value is outside the normal operation voltage ranges, then the diagnostic will be considered failing.