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Scan tool 900 1996

uid 19's pic
posted by  jbowers on  Fri Jul 30 03:07 CST 2004
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last visit: Sun Jan 22 13:49 CST 2012
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From reading the manual and studying the wiring diagram it seems the Motronic 4.x system actually applies a bias to sensor and reads the differece between the bias level and the other lead. Therefor, you really need a differential probe setup to read the sensor voltage.

With a scanner and your laptop, you can get a real time display of the O2 function. The 32 bit ECU in our OBD-II systems has lots of diagnostic code in it so unless your MIL lamp is on, your O2 sensor is probably OK. My car is still running on the original one in the front at 118K. The rear one was diagnosed bad by the ECU at about 90K and was repalced then.

The one I have is from Harrison R&D but there are several out there in the range of $100. They all read the generic OBD-II codes, not the Volvo EFI codes.
--
'96 965 with 16' wheels at 118K. Had '85 745 Turbo Diesel for 200K.






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New Scan tool [900][1996]
posted by  edinphx  on Thu Jul 29 15:23 CST 2004 >


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