Pinpoint Tests F: Intake Air Temperature (IAT) Sensor: Introduction

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:

harness circuits: IAT and SIGRTN
mass airflow/intake air temperature (MAF/IAT) sensor (12B579)
PCM (12A650)

Fig 1: Mass Airflow/Intake Air Temperature (MAF/IAT) Sensor Connector

Courtesy of FORD MOTOR CO.

Pin	Circuit
4	SIGRTN (Signal Return)
2	IAT (Intake Air Temperature)

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

Courtesy of FORD MOTOR CO.

Pin	Circuit
60	SIGRTN (Signal Return)
47	IAT (Intake Air Temperature)

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

Courtesy of FORD MOTOR CO.

Pin	Circuit
15	SIGRTN (Signal Return)
9	IAT (Intake Air Temperature)