Ford Transmission Range (TR) Sensor Internal Circuit Schematic - Pins 30 & 46

This document is a simple electrical schematic showing an internal circuit of what appears to be a transmission range (TR) sensor, consistent with the upload filename "tr.gif". The diagram shows two external connection points labeled PIN 30 (at top) and PIN 46 (at bottom right). A rotary switch wiper connected to PIN 30 sweeps across six contact positions arranged in an arc, labeled P, R, N, D, 2, and 1, the standard automatic transmission gear selector positions (Park, Reverse, Neutral, Drive, 2, 1). Each of these contact positions taps into a chain of resistors (drawn as a horizontal string of zig-zag resistor symbols along the bottom of the diagram), and the resistor chain terminates at PIN 46. From this diagram a reader can understand that the sensor operates as a variable resistance (voltage divider) network: depending on which gear position the selector is in, a different amount of resistance is placed between PIN 30 and PIN 46, allowing a control module to determine the selected gear from the measured resistance or voltage. The document contains no part numbers, resistance values, wire colors, or year/model applicability statements.