PINPOINT TEST AH: Visctronic Drive Fan (VDF): Introduction
WARNING: This page does not describe the selected car, but rather 7 other vehicles, including the 2007 Ford RV Cutaway, 2007 Ford Pickup, 2007 Ford F550 Super Duty, 2007 Ford F450 Super Duty, and 2007 Ford Econoline. However, it is still accessible from the selected car via links, so may be relevant.
WARNING:
To avoid the possibility of personal injury or damage to the vehicle, do not operate the engine until the fan blade has been first examined for possible cracks and separation. Failure to follow these instructions may result in personal injury or death.
This pinpoint test is intended to diagnose the following:
- VDF
- fan speed sensor
- harness circuits
- powertrain control module (PCM) (12A650)
| Pin | Circuit |
|---|---|
| 1 | FSS (Fan Speed Sensor) |
| 2 | FSS SIGRTN |
| 6 | VBPWR (Vehicle Buffered Power) |
| 4 | VDF (Visctronic Drive Fan) |
| 5 | VPWR (Vehicle Power) |
| Pin | Circuit |
|---|---|
| E6 | FSS (Fan Speed Sensor) |
| E22 | FSS SIGRTN |
| E46 | VBPWR (Vehicle Buffered Power) |
| E14 | VDF (Visctronic Drive Fan) |