Hey guys. I have two ABS / TCS that I can't seem to figure out where to look. My understanding is that the codes stand for Brake Load Demand (or command) but I don't know where the sensor is located.
These are me two codes:
1. ABS (136) SID 78 FMI 2
2. ABS (136) SID 77 FMI 7
Both of these codes are slightly de-rating my trucks HP / Boost.
Anyone know if these are air pressure sensors located at the brake pedal (4 sensors inside the cab around the treddle valve / two located under the hood under on the treddle valve. Or are these the sensors that attach to the rear suspension air bags ( two- one on front axle and one on the rear axle)
Thanks for the advice.