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Ask Roy Belding Your Own Question
Roy Belding
Roy Belding, ASE Certified Technician
Category: Buick
Satisfied Customers: 6177
Experience:  Master ASE since 1980
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No power to the obd plug but have power to the sig lighter,

Customer Question

no power to the obd plug but have power to the sig lighter
JA: Is the power loss consistent, or does it fluctuate?
Customer: nothing at all
JA: What is the model/year of your Buick?
Customer: 94 buic regal gs
JA: Are you fixing your Regal yourself? What have you tried so far?
Customer: changed the starter thought i had all power disconected but wasn"t wire arced checked all fusses all good
JA: Anything else you want the mechanic to know before I connect you?
Customer: ever since i changed the starter sounds like timing is of when hot
Submitted: 5 months ago.
Category: Buick
Expert:  Roy Belding replied 5 months ago.

Hello, my name is ***** ***** I will be glad to assist. Please allow me a moment to gather some information.

Expert:  Roy Belding replied 5 months ago.

ok

on the old obd 1 systems the dlc is powered by the ecm.

attached is the wiring diagram and terminal identifiers for you.

if you cannot communicate then the ecm is bad and must be replaced.

Roy

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