Post by
VStar650CL »
https://forums.nicoclub.com/vstar650cl-u299034.html
Wed Feb 14, 2024 9:14 pm
Unless a sensor is shorted internally, the only things which can short on the power side are the heater wires. Those use PWM, the heater has power at all times and the ECM grounds the other side in pulses (PWM) depending on the amount of heat needed. The 12V supply feeds all 4 sensors, front and rear. Try disconnecting all 4, if fuse 46 still blows then the issue is in the wiring, if not then a sensor is shorted internally. In the latter case, plug them back in one at a time to locate the culprit.