Pinpoint Test U: An Individual Fog Lamp Is Inoperative: Testing

WARNING: This page is about a different car, the 2005 Mercury Montego, 2005 Ford Freestyle, and 2005 Ford Five Hundred. However, it is still accessible from the selected car via links, so may be relevant.

U1 CHECK CIRCUIT 1205 (BK) FOR AN OPEN
- Key in OFF position.
- Disconnect: Inoperative Fog Lamp.
- Measure the resistance between the LH fog lamp C152-2, circuit 1205 (BK), harness side and ground; or between the RH fog lamp C162-2, circuit 1205 (BK), harness side and ground.
  
  Fig 1: Measuring Resistance Between LH Fog Lamp C152-2, Circuit 1205 (BK), Harness Side And Ground
  Courtesy of FORD MOTOR CO.
- Is the resistance less than 5 ohms?
- Yes : REPAIR circuit 1776 (TN/OG). TEST the system for normal operation.
- No : REPAIR circuit 1205 (BK). TEST the system for normal operation.