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86 B230F, TPS Loom, No power?? 200 1986

posted by  adamski on  Mon Dec 15 12:34 CST 2003
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last visit: Fri Jul 5 22:31 CST 2013
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Hi all, Tried testing the loom going to the TPS switch with a 12v test lamp earthed to the engine, but none of the three pins seem to light up?? it the power to the tps 12v? or is it not enough to light up?, when i place the testlight in the end terminal the engine revs seem to change though.
Help anyone?








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86 B230F, TPS Loom, No power?? 200 1986

uid 18083's pic
posted by  lucid on  Mon Dec 15 13:33 CST 2003
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last visit: Fri Oct 24 12:31 CST 2014
[RELATED]

There is no power there in a static (not running) situation. The ECU does put a signal (5V ?) on the orange wire, which will be grounded if the throttle is closed, or fed back to the ECU by the Blue/White wire if the throttle is wide open.

The TPS adjustment is done to meet those two conditions. Especially the closed/idle one.
--
Bruce Young,
'93 940-NA (current)
'80 GLE V8 (Sold 5/03)
'83 Turbo 245
'76 244 (lasted only 255,000 miles)
73 142 (98K)
'71 144 (track modified--crusher bound)
New 144 from '67 to '78
Used '62 122 from '63 to '67







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