Pinpoint Tests L: Engine Oil Temperature (EOT) Sensor: Introduction

WARNING: Be aware of moving vehicle components and heat. Failure to follow these instructions may result in personal injury.

NOTE: Regeneration may occur during normal operation. During regeneration, diagnostic procedures may display biased values. If a regeneration occurs during diagnostic procedures, allow the process to complete before continuing diagnostics.

This pinpoint test is intended to diagnose the following:

EOT sensor (12A648)
harness circuits: EOT and SIGRTN
PCM (12A650)

Fig 1: Engine Oil Temperature (EOT) Sensor Connector

Courtesy of FORD MOTOR CO.

Harness Side

Circuit	Pin
EOT (Engine Oil Temperature)	1
SIGRTN (Signal Return)	2

Fig 2: Powertrain Control Module-B (PCM-B) Connector

Courtesy of FORD MOTOR CO.

Harness Side

Circuit	Pin
SIGRTN (Signal Return)	44

Fig 3: Powertrain Control Module-E (PCM-E) Connector

Courtesy of FORD MOTOR CO.

Harness Side

Circuit	Pin
EOT (Engine Oil Temperature)	36