Ws5 Scan tool diagnostics

I put this scan tool onto my Mzada capella 98. I used the correct plug and put it into the diagnosis plug on the car.



I got these readings off the cars live data.
There were no fault codes.
I unplugged some sensors and rediagnosed the car.
There was three fault codes now.
p0100 MAF sensor malfunction
P0100 IAT Circuit malfunction
P0505 Idle control system Malfunction

The IAT was the one we noticed still gave us a reading, even though it was unplugged. The ECU obviously has a preset IAT reading if the IAT is not working, in this case it was at 19*C.
The MAF gave me no reading at all, and the Idle control circuit just stayed off.

I repaired the faults and all the fault codes were cleared via the scan tool. I then rediagnosed the car and no fault codes came up.

Live data is a great way of fault finding, as it is 'live'. So you can see the problem first hand. This can save a lot of time when working in a workshop.