The right tool for the job in hand

27 January 2012  

The right tool for the job in hand

This month, James looks at the right way to go about testing and the value of resistance

Look busy

Figure 2-

Current clamp

Figure 2

Figure 3

So, although both sensors were measuring wheel rotation, the output from the offside wheel wasn’t registering in the ABS ECU. Notice how the amplitude from both sensors is close (7.1 uA, or micro amps, vs 7.2 uA), there is something causing a 3 uA offset which is affecting the offside sensor output. 3 uA doesn’t sound like much but it represents a 40% difference between sensors.

Figure 4