1991 Chevrolet Lumina ect wiring

1991 CHEVROLET LUMINA
161,000 MILES • 3.1L • 6 CYL • FWD • AUTOMATIC
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MIKE LUCKEY
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  • 38 POSTS
I would like to test the wiring for my ect sensor. can anyone tell me which wire is the signal and which is the ground.
Mar 8, 2015 at 8:35 AM
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WRENCHTECH
  • CAR REPAIR CONTRIBUTOR
  • 20,761 POSTS
https://www.2carpros.com/images/external/41922000.gif
Mar 8, 2015 at 9:39 AM
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MIKE LUCKEY
  • MEMBER
  • 38 POSTS
thank you!
Mar 8, 2015 at 10:12 AM
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