Toronado V6-231 3.8L (1986)
1.
BCM data value BD71 displays oil pressure. The normal range is from 0 to 80 PSI. A value above 80 indicates an open or shorted to voltage
circuit or sensor.
2.
Checks to see if the open circuit reading is due to the circuit or sensor. If the open circuit reading changes to a shorted circuit reading after
jumpering the sensor terminals, the BCM and wiring are OK.
3.
By applying a ground to various points in the circuits, an open can be isolated by observing whether the parameter display can be changed from
the open reading to the shorted reading.
Note on Intermittents
If an intermittent code B131 and/or B132 is being set, manipulate the related wiring while observing BC data parameter BD71. If the failure is induced
the reading will jump from 0 to some oil pressure with the engine off.
