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Greetings, all!
My M46 won't kick in the overdrive. All the wires are connected underneath on the trans. I've traced continuity from the shifter OD switch wiring down to the harness plug on the passenger side of the tunnel -- OK there. The fuse (#11) has continuity. The wire which plugs into #15 on the relay carries 12 volts when the ignition is on. I pulled the relay and resoldered all the connections on the circuit board and cleaned up the male connector prongs. Yet, I still can't get the relay to fire. Is it truly dead? ...or...is there some reason that a malfunctioning 4th gear switch on the trans could prevent the relay from firing? ...or...some mystical incantation that I'm missing?
Assuming that its a dead relay, am I condemned to get one at the local Volvo dealer ($$$), or is this a common relay that a good parts store would carry?
Thanks!
Rob
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