Omega Owners Forum
Omega Help Area => Omega Electrical and Audio Help => Topic started by: Doctor Gollum on 28 June 2021, 15:08:42
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Got a head scratcher...
The BkWh wire that runs from the Climate panel to the pressure switch and onto a fan relay then into the engine ecu.
What polarity is it at the engine Ecu and if positive, what voltage?
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It goes:
U28 - 15 X63 (climate panel)
4 X58 (plug under battery)
2S20 via low pressure switch, through high pressure switch and out 1S20
4 X30 (9 pin plug in relay box)
41 K61 (engine ecu)
Basically, the system looks to be self sufficient, like the fans, but I need to bypass the engine ecu.
There are two other wires involved, but they are both fed from F15, so obviously ground out through the engine ecu.
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Have established that it does indeed also ground out through the engine ecu.
Still not working, but have possibly ruled it down to either of the aircon sensors and/or charge quantity as all of the wiring is intact except for what might happen electronically within the engine ecu on the way to ground :-\