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Old 07-17-2017, 12:03 PM   #2
JFP in PA
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Join Date: Feb 2005
Location: It's a kind of magic.....
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Mike, the OBDII system in these cars reads off the DME, not the sensors directly. The sensor are sending fractional or low voltage signals to the DME, which converts them into what are referred to as "PID's", which are the reading values. Tapping into the sensor wiring will only give you the voltage. You can read a significant number of the PID values directly off the OBDII port however.
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