Ford Repair Questions? Ask a Mechanic for Answers ASAP
If you unplug the brake fluid level sensor, does the red brake light go out?If you unplug the parking brake switch, does the red brake light go out?
Check the resistance to ground on the light green/yellow striped wire at the fluid level sensor connector and the parking brake switch connector on the light green wire with the key off and the battery disconnected. This will tell us if either wire is shorted to ground. Either the instrument cluster is bad, the dash fuse box, called the smart junction box, is bad or the wiring is shorted to ground.
Ok. We need to unplug two connectors on the dash fuse box and remeasure.
See the diagram below and locate connectors C2280D and C2280F. Unplug them both and remeasure the resistance. Remember to have the battery disconnected.
You get an open circuit reading on the meter or OL?
Ok. The problem is in the dash fuse box, or what Fords calls it, the SJB. Smart Junction Box.
The SJB will need to be replaced.
No, the 2001 and 2006 are completely different.
Can you give me the VIN#>
It looks like it should be 5F1Z-15604-C by your VIN#.
You can reprogram your remotes to the new one.
Below is the connector view of C2280D.
547 is for the brake fluid level sensor.
When you tested this earlier, did you have the battery disconnected? This is a copy of out earlier relies to each other on Jun 26, 2016.
26 Jun 2016, 9:16 PM
I get 19m ohms on the green wire for the parking brake and 1.3k ohms for the yellow/green wire on the fluid sensor.
We will need to get access to a scan tool that can communicate with the instrument cluster and the Smart junction box (dash fuse box) and monitor pids to see what is causing it. See steps K1-K3 of the pin point test.
Only dealerships and good independent repair shops do.