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More o2 sensor info...
Posted by Anders (more from Anders) on Mon, 11 Mar 2002 11:37:00
In Reply to: more o2 sensor info..., Chris., Mon, 11 Mar 2002 08:44:25
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The electric chart don't list the colors of the O2 sensor wires. I think Saab sees them as being a whole part of O2 sensor.
But if you use the colors of the connectors up by intake manifold it's listed like this.
Front sensor,
pin 1 Grey/white ( turns into white on sensor )
pin 2 Black/white ( turns into other white wire )
pin3 Brown/white ( turns into Grey wire ) and
pin 4 Green ( turns into Black wire on sensor )
Rear sensor,
pin 1 Green/white (white)
pin 2 Yellow (white)
pin3 Brown/white (Grey) and
pin4 Green (Black)
Pin 1 is power supply from fuse 38 ( this is taken from TRIONIC system 96 and up )to both sensors.
Pin 2 is Ground from ECU to heating element. ( two different ground wires from ECU)
Pin 3 is low voltage signal to ECU ( both sensors are spliced into one wire before they go into ECU.
Pin 4 is high voltage signal to ECU, Front/Rear sensor have it's own pin on ECU ( not spliced together as the grey wire is.)
Hope this helps a little
posted by 66.134.5...
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