PINPOINT TEST HM: Secondary Air Injection (AIR) System: Introduction

WARNING: This page does not describe the selected car, but rather 35 other vehicles, including the 2007 Mercury Mountaineer, 2007 Mercury Monterey, 2007 Mercury Montego, 2007 Mercury Milan, and 2007 Mercury Mariner. However, it is still accessible from the selected car via links, so may be relevant.

This pinpoint test is intended to diagnose the following:

secondary air injection system relay (14B192)
electric air injection pump (9A486)
secondary air injection bypass solenoid (9H465)
harness circuits: B+, VPWR, AIR, AIRM, ground
powertrain control module (PCM) (12A650)

secondary air injection diverter valve (9F491)
vacuum supply
hoses
partial restricted exhaust

Refer to the appropriate SYSTEM WIRING DIAGRAMS article for schematic and connector information.

Fig 1: Secondary AIR Relay Connector

Pin	Circuit
87	AIR_PWR (AIR Pump Power)
30	B+ (Battery Positive Voltage)
86	VPWR (Vehicle Power)
85	AIR (Secondary Air Injection)

Fig 2: Secondary AIR Solenoid Connector

Pin	Circuit
2	VPWR (Vehicle Power)
1	AIR (Secondary Air Injection)

Fig 3: Secondary Air Pump Connector

Pin	Circuit
2	AIR_PWR (AIR Pump Power)
1	AIR_GND (AIR Pump Ground)

Powertrain Control Module (PCM) Connector

For PCM connector views or reference values, refer to the REFERENCE VALUES article.

Vehicle	Connector	Pin	Circuit
Focus	150 (50-50-50) Pin	B10 B19 E40 B41 B47 B35 B17	CASE GND AIRM VREF SIGRTN PWRGND VPWR AIR
All other vehicles	140 Pin	B66 B50 B33 B58 B67 B51 B1	CASE GND AIRM VREF SIGRTN PWRGND VPWR AIR