Code 45 - Left Front Impact Sensor Not Mounted To Vehicle Properly: Description
WARNING: This page is about a different car, the 1995 Ford Pickup, 1995 Ford F-Super Duty, 1995 Ford Cab & Chassis, and 1995 Ford Bronco. However, it is still accessible from the selected car via links, so may be relevant.
Diagnostic monitor measures resistance between terminal No. 21 and 3. If resistance varies more than 2 ohms between terminals, Code 45 will set. Impact sensor is grounded to vehicle through sensor case.