Check the brake light switch located on the brake pedal rod underneath the dash.
The brake light switch will have an Orange wire and an White wire going to it (there may be as many as five wires but these two operate the brake lights).
The Orange wire should have battery voltage on it at all times. The White wire will have power when the brake pedal is pressed.
If this is the case, the brake light switch is functioning properly.
Next check the STOP Lamp RELAY located in the underhood fuse/relay center. To check the relay, simply switch it with an identical relay (Usually you can find one in the very same fuse box). Now, if the brakes lights work you know that the relay is bad.
Finally, check the operation of the hazard light switch. Once the power leaves the brake light switch it goes through the hazard light switch on its way to the brake lights.
**There is a STOP/HAZ Fuse #1 (15A) in the fuse box inside of the vehicle. Also a BRAKE Fuse #18 (10A) in the same fuse box. [I know that you've already checked these, but I wanted to give you a complete answer.]
Wednesday, July 23rd, 2014 AT 9:29 AM