× Auto Repair Pros Member Benefits TechHelp Knowledge Base Forums Resources My iATN Marketplace Chat Pricing About Us Join Industry Sponsors Video Members Only Repair Shops Auto Pro Careers Auto Pro Reviews
Join Now
International Automotive Technicians Network
Re: Snap-on Current Ramp test numbers - please chime in
Posted to Technical Theory Forum on 12/24/2017 1 Reply

[2001 GMC Sierra 1500 SL, BATT/Charging/Starting Waveform]

CH A shows the batt cranking voltage at 11.4v and the alt puts out 14.6v when running.

CH B is the brown alt control wire, 1.4v cranking, to 11.5v when the engine is running

CH C the initial sta... Login to read more.

Files Referenced:

thumbnail

1 Replies Received (View Replies)

 

car Vehicle Data

2001 GMC Sierra 1500 SL 4.8L

Engine4.8 L
Trans4-speed Automatic (Electronic)

car Vehicle Data

2001 GMC Sierra 1500 SL 4.8L

Engine4.8 L
Trans4-speed Automatic (Electronic)