I am using a Prodigy P3 to control the current to the electric brakes and needed to access a signal that goes positive high (12V) when the brake is applied on an LC200 Series 2018
I decided to get dirty with a multimeter and the 5 pin brake switch connector and share my results.
The RED (Pin4 in my numbering system) wire was identified as being suitable for the purposes of connecting to the PRODIGY P3 so it can detect when the brake pedal is pressed. This wire goes from 0V to 12.57V when the pedal is pressed.
Wire Pins Test summary. (Details with pics can be found at https://hackaday.io/project/162319-lc-200-series-2018-brake-switch-investigation)
1. BLACK goes from 0V to 12V when the Ignition is turned on.
2. PINK goes from 12V to 0V when the brake is pressed AND the ignition is on.
3. WHITE seems to change its resistance from 1.5ohms to 8ohms then settles at 1.6ohms when the brake is pressed.
4. RED goes from 0V to 12V when the brake pedal is pressed regardless of the state of the ignition
5. Blue always 12V
I decided to get dirty with a multimeter and the 5 pin brake switch connector and share my results.
The RED (Pin4 in my numbering system) wire was identified as being suitable for the purposes of connecting to the PRODIGY P3 so it can detect when the brake pedal is pressed. This wire goes from 0V to 12.57V when the pedal is pressed.
Wire Pins Test summary. (Details with pics can be found at https://hackaday.io/project/162319-lc-200-series-2018-brake-switch-investigation)
1. BLACK goes from 0V to 12V when the Ignition is turned on.
2. PINK goes from 12V to 0V when the brake is pressed AND the ignition is on.
3. WHITE seems to change its resistance from 1.5ohms to 8ohms then settles at 1.6ohms when the brake is pressed.
4. RED goes from 0V to 12V when the brake pedal is pressed regardless of the state of the ignition
5. Blue always 12V