Pinpoint Test TG: 4x4 Low Switch (4X4LSW) And Four Wheel Drive (4WD) Switch: Introduction: Notes
WARNING: This page does not describe the selected car, but rather 32 other vehicles, including the 2005 Mercury Sable, 2005 Mercury Mountaineer, 2005 Mercury Monterey, 2005 Mercury Montego, and 2005 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:
- Harness circuits between the PCM and the 4WD control module.
- Harness circuit for mechanical 4x4L.
- Powertrain control module (PCM) (12A650).