PINPOINT TEST FF: Power Steering Pressure (PSP) Switch: 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.
WARNING:
Crown Victoria Police Interceptor vehicles equipped with fire suppression system, refer to FIRE SUPPRESSION SYSTEM
article for Important Safety Warnings. Failure to follow these instructions may result in personal injury.
This pinpoint test is intended to diagnose the following:
- power steering pressure switch (3N824)
- harness circuits: PSPSW and SIGRTN
- powertrain control module (PCM) (12A650)
| Vehicle | Connector | Pin | Circuit |
|---|---|---|---|
| Crown Victoria, Escape, Fusion 3.0L, Grand Marquis, Milan 3.0L, Town Car |
A | 2 1 |
SIGRTN PSPSW |
| Edge, Fusion 2.3L, Milan 2.3L, MKX, MKZ |
B | 1 | PSPSW |
| Ranger | C | 2 1 |
SIGRTN PSPSW |
| All other vehicles | C | 1 2 |
SIGRTN PSPSW |
The PSP and SIGRTN circuits may be reversed in the harness connector. Refer to the appropriate SYSTEM WIRING DIAGRAMS article for schematic and connector information.
Powertrain Control Module (PCM) Connector
For PCM connector views or reference values, refer to the REFERENCE VALUES article.
| Vehicle | Connector | Pin | Circuit |
|---|---|---|---|
| Edge, MKX |
190 Pin | B17 | PSPSW |
| Escape, Mariner |
150 (50-50-50) Pin | B41 B3 |
SIGRTN PSPSW |
| Explorer, Explorer Sport Trac, Mountaineer |
170 Pin | B41 B27 |
SIGRTN PSPSW |
| Five Hundred, Freestyle, Montego |
150 (50-50-50) Pin | E41 B34 |
SIGRTN PSPSW |
| Freestar/Monterey | 104 Pin | 91 31 |
SIGRTN PSPSW |
| Fusion 2.3L, Milan 2.3L |
140 Pin | E65 | PSPSW |
| Fusion 3.0L, Milan 3.0L, MKZ |
140 Pin | E58 E65 |
SIGRTN PSPSW |
| Ranger | 170 Pin | B41 B34 |
SIGRTN PSPSW |
| All other vehicles | 170 Pin | E58 B34 |
SIGRTN PSPSW |