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940 Power seat not receiving enough voltage and won't operate 900

posted by  aconn7 on  Thu Apr 13 19:20 CST 2017
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last visit: Fri Jun 14 16:45 CST 2013
[RELATED]

Hello All.

My 940 Wagon's driver's power seat stopped working. I have traced the problem down to low voltage reading on the power supply to the control module under the seat. I am confident this is the case because:

1) The seat controls work - I can hear the relay switches "click" in the control module when I fiddle with the side controls.
2) I read only 11.4 volts power into the control module. On my other 940, it reads 12.2.
3) The clincher: I removed and switched seats with my other 940 and the seats both work fine in 940 with the 12.2 voltage but not with the 11.4.

Question is:

1) What is degrading the voltage and where can I start looking?
2) Is there some jury rig by-pass I can employ to boost the voltage?

Thanks!

Andy
--
'93 940 Turbo 230k, '94 940 47k, '95 940 200k






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