[techhelpbb]

To get this right back on topic...I'll summarize (and with respect to the other mentors I'll include some of their input)...

The 0.001 Ohm, 4 Watt resistor (the part labeled R23 in the Jaguar schematic) that measures current in the Jaguar is fine for normal operating currents one expects to use with the Jaguar. Those currents are generally less than 50 Amps, with a very occasional spike over 50 Amps and not much higher than 100 Amps. That resistor itself crosses it's maximum Wattage rating just after 63 Amps in this circuit.

However, it's Wattage rating is too small for repeat overload situations especially with the CIM motors and it can be both damaged and accidentally desoldered when such situations occur (and it's not the only thing in that circuit that will start to take damage).

Such situations are possible precisely because the current limiting devices between the battery and the Jaguar react relatively slowly. So even if they do trip they probably won't trip before you start to do some damage (and that damage will add up if you keep doing that).

If that resistor were to no longer connect the top of the power MOSFET circuit to the power from the battery and current limiting devices...then the voltage measured across that circuit and reported back to you will drop to basically zero. Maybe you can just replace that resistor...or maybe not...it all depends on what other damage has also taken place.