Pinpoint Test HM: Secondary Air Injection (Air) System: Introduction
WARNING: This page does not describe the selected car, but rather 24 other vehicles, including the 2009 Mercury Mountaineer, 2009 Mercury Milan, 2009 Mercury Mariner, 2009 Lincoln Town Car, and 2009 Lincoln MKZ. 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 and 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.
For PCM connector views or reference values, refer to REFERENCE VALUES .
POWERTRAIN CONTROL MODULE (PCM) CONNECTOR
| Connector | Pin | Circuit |
|---|---|---|
| 140 Pin | B58 B66 B67 B33 B51 B50 B1 |
SIGRTN CASE GND PWRGND VREF VPWR AIRM AIR |