PINPOINT TEST TA: Transmission Range (TR) Sensor: Introduction

WARNING: This page is about a different car, the 2007 Mercury Mariner and 2007 Ford Escape. However, it is still accessible from the selected car via links, so may be relevant.

WARNING: This vehicle is equipped with high voltage cables, components, and wiring. The high voltage warning labels containing the high voltage symbol are located on each high voltage component. High voltage cables and wiring are orange in color. Certified rubber insulating gloves and a face shield must be worn when working with the high voltage cables, components, or wiring. The ignition key must be cycled to the OFF position for a minimum of 5 minutes, and the high voltage traction battery service disconnect plug placed in the servicing/shipping position before disconnecting the high voltage cables. Failure to follow these instructions may result in personal injury or death.

Do not disconnect, disable, or touch the high voltage cables, components, or wiring during the module reprogramming procedure because high voltage is present. The high voltage warning labels containing the high voltage symbol are located on each high voltage component. High voltage cables and wiring are orange in color. Failure to follow these instructions may result in personal injury or death.

Appropriate repair methods and procedures are essential for the safe, reliable operation of all motor vehicles, as well as the personal safety of the individual doing the work. This article provides general directions for repairing vehicles with tested, effective techniques. Following them helps to establish reliability. There are numerous variations in procedures, techniques, tools, and parts for repairing vehicles, as well as in the skill of the individual doing the work. This article cannot possibly anticipate all such variations and provide advice or cautions as to each. Accordingly, anyone who departs from the instructions provided in this article must first establish that they compromise neither their personal safety nor the vehicle integrity by their choice of methods, tools, or parts.

This pinpoint test is intended to diagnose the following:

transmission range (TR) sensor (7K004)
harness circuits: TR-A, VREF, and SIGRTN
powertrain control module (PCM) (12A650)

Fig 1: Transmission Range (TR) Sensor Connector

Pin	Circuit
2	TR-A3 (Analog Transmission Range 3)
5	TR-A2 (Analog Transmission Range 2)
8	TR-A1 (Analog Transmission Range 1)
1	TR-RTN2 (Transmission Range Return 2)
6	TR-VREF2 (Transmission Range Reference Voltage 2)
3	TR-RTN1 (Transmission Range Return 1)
7	TR-VREF1 (Transmission Range Reference Voltage 1)

Fig 2: Identifying 150 Pin PCM Harness Connectors/Terminals

Pin	Circuit
T29	TR-RTN2 (Transmission Range Return 2)
T17	TR-RTN1 (Transmission Range Return 1)
T27	TR-VREF2 (Transmission Range Reference Voltage 2)
B35, B36	VPWR (Vehicle Power)
T15	TR-VREF1 (Transmission Range Reference Voltage 1)
T39	TR-A3 (Analog Transmission Range 3)
T28	TR-A2 (Analog Transmission Range 2)
T16	TR-A1 (Analog Transmission Range 1)