Normal Operation
WARNING: This page is about a different car, the 2007 Ford Pickup, 2007 Ford F550 Super Duty, 2007 Ford F450 Super Duty, and 2007 Ford Cab & Chassis. However, it is still accessible from the selected car via links, so may be relevant.
When the keyless entry keypad illumination is activated, the vehicle security module supplies voltage to circuit 66 (LB) to illuminate the keyless entry keypad. The keyless entry keypad illumination is grounded through circuit 57 (BK).
Possible Causes
- Circuit 57 (BK) open
- Circuit 66 (LB) open or short to ground
- Keyless entry keypad
- Vehicle security module