What color is the hot wire to the throttle position sensor on a 2000 buick century .... Black , blue or grey , I'm doing a multimeter test for voltage
white or grey is the 5v reference signal from the pcm, black is ground, blue is the tps signal wire that goes back to the pcm. if you go to easyautodiagnostics.com there is an easy test procedure for the tps using a multimeter.
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