You are watching: Brake light failure sensor honda accord

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HOW TO: 2 Minute settle for FAULTY Brake Light fail Sensor Module.
Didn"t view this posted almost everywhere so i figured I would take it upon myself to execute so. Like numerous people prior to me, ns ran right into an worry with the brake lamp on mine 99 RX300. When I moved the brakes, no lights would come on at all.*First thing to perform is obviously examine the fuse. It was fine.*Second, check power at the brake sensor at the brake pedal. These perform go out, however often times are NOT the issue. The 2 wires linked to the sensor space Green/Black and also Green/White. The Green/Black originates from the battery and should have actually 12v. As soon as the brake pedal is depressed, strength flows through the switch and out that the Green/White wire. There isn"t much room under there come fiddle about with experimentation those wires, so here is one easier method to test that below: -The BRAKE LIGHT fail SENSOR MODULE is located on the cargo area under the cloth lining. Once removed, it is a tan colored crate clipped to the earlier side the the sheet metal. Indigenous HERE, we have the right to test if the BRAKE SENSOR in ~ the pedal is bad. Together I mentioned above, when the pedal is depressed, it sends 12v through the green/white wire. This cable leads earlier to the BRAKE LIGHT failure SENSOR MODULE in the cargo area. So here, take your voltmeter and also test the GREEN/WHITE cable on the module harness while the key IS ON and the BRAKE PEDAL IS DEPRESSED. If her BRAKE SENSOR is working, you will get 12v. If you acquire no power, your brake sensor is bad.*NOW...if girlfriend DO get power at the GREEN/WHITE wire, yet you carry out NOT have brake lights still, girlfriend will now test pen #1 on the exact same harness. This is the GREEN/YELLOW wire. Possibilities ARE, you will NOT obtain 12v in ~ this wire. Again, test v the crucial ON and BRAKE PEDAL DEPRESSED. If you carry out NOT get 12v in ~ the GREEN/YELLOW wire, then your BRAKE LIGHT failure SENSOR MODULE is bad. This appears to it is in the most usual issue once the brake lamp don"t work all of a sudden.*****A new MODULE will RUN you UPWARDS of $300 native THE DEALER!!!!******We don"t want to pay this ridiculous amount the money because that a small plastic box. And also with a couple minutes, you deserve to fix the sensor YOURSELF and be back to working in no time.These sensors are just like the key relays on Honda"s...one pen in basic ends up getting a damaged solder joint. This is caused by many heat cycles on/off. The solder heats up once power goes v (BRAKES APPLIED) and also cools as soon as there"s no strength (BRAKES RELEASED). With the Honda relays, it is usually the starter solder joint the ends up cracking. Anyway, back to ours modules. Through the consistent heat cycles and the robotic welds ~ above the plank itself, the style is prone to fail from the factory...AS we KNOW.*Once your module is out, take the blue cover off of the back, friend will view the circuit board. Friend will see the pins because that the connector along the top. Pen #1 is the one that we space working through here. The is where the GREEN/YELLOW wire will certainly be once the plug is connected. If you inspect it out, chances are you will view that the solder has cracked and broken far from the pin. You will see all of the various other solder joints are solid but the solder on pen #1 looks choose THIS:
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As you can see, over there is a clear distinction in the way the solder flows. The images don"t perform justice to what you watch in person, however it is certainly noticeable in my pictures.*You have the right to two one of two points here. First would it is in to use solder braid and also remove all of the old solder, then resolder the pin afterward. OR apply a tad bit more solder come the already existing solder. The existing solder has end up being a cold solder joint because of cracking, as you can see. Reheat the old solder and also flow new solder onto the pin. ~ you room done, you will acquire something comparable to THIS:
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After you flow new solder, you deserve to clean up the bordering area through your solder braid and also alcohol. Put the blue cover earlier on the module box and also plug the in. Step on the brakes and ENJOY the fact that girlfriend didn"t need to spend $300.My automobile is a 99, it take it 14 years for the solder share to fail favor it did. Resoldering this through a great solder joint should last the rest of the life that the car. I"ve repaired lot of Honda key relays choose this and also even years later, there hasn"t to be an problem again. Mine brakes are working perfect in the RX now.

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Time will ultimately tell just how long this resolve lasts, however just remember the the natural design of the module is at risk to failure to start with...so even if you to be to purchase a brand new module, it will fail again at some point. Perhaps not prior to your vehicle dies, but you get the point.Hope this can help someone out!