Normal Operation
WARNING: This page is about a different car, the 2007 Mercury Mariner and 2007 Ford Escape. However, it is still accessible from the selected car via links, so may be relevant.
When the smart junction box (SJB) detects a button has been pressed on the keyless entry keypad, the SJB supplies voltage through circuit 66 (LB) to the keypad. The keypad is grounded through circuit 570 (BK/WH).
Possible Causes
- Circuit 66 (LB) open or short to ground
- Circuit 570 (BK/WH) open
- Keyless entry keypad
- SJB