Pinpoint Tests Dm: Manifold Absolute Pressure (Map) Sensor: Introduction

WARNING: To prevent the risk of high-voltage shock, always follow precisely all warnings and service instructions, including instructions to depower the system. The high-voltage system utilizes approximately 300 volts DC, provided through high-voltage cables to its components and modules. The high-voltage cables and wiring are identified by orange harness tape or orange wire covering. All high-voltage components are marked with high-voltage warning labels with a high-voltage symbol. Failure to follow these instructions may result in serious personal injury or death.

This pinpoint test is intended to diagnose the following:

MAP sensor (9F479)
harness circuits: MAP, SIGRTN, VREF
PCM (12A650)

Fig 1: Manifold Absolute Pressure (MAP) Sensor Connector

Courtesy of FORD MOTOR CO.

Harness Side

Circuit	Pin
VREF (Reference Voltage)	2
MAP (Manifold Absolute Pressure)	1
SIGRTN (Signal Return)	4

Fig 2: Powertrain Control Module (PCM) Connector

Courtesy of FORD MOTOR CO.

Harness Side

Circuit	Pin
MAP (Manifold Absolute Pressure)	E18
SIGRTN (Signal Return)	E6