Battery Test Results Difference
Senior Member
Joined: 06-13-2017
Posts: 180
From: Fairborn, OH
Thanks for posting that. Where it goes to the Power Distribution System (translates to the fuse and relay block) I assumed was the terminal for jumping, also. The prints could be reconciled and more accurate as to actual connections.
That was what I did for a living. Correct engineering electrical prints into workable form, then build the systems.
That was what I did for a living. Correct engineering electrical prints into workable form, then build the systems.
Moderator
Joined: 01-23-2009
Posts: 26,448
From: Fredericksburg,VA
I can't post the charging diagram, but on it you will see two lines in red from the battery. One to the Power distribution System (the fuseblock under the hood) and a separate one from the battery to the starter, then on to the alternator.
This makes the path from post to starter longer, from post to battery, then battery to starter. It will jump from here (obviously) but that long path has its consequences.
Or am I not reading it right?
This makes the path from post to starter longer, from post to battery, then battery to starter. It will jump from here (obviously) but that long path has its consequences.
Or am I not reading it right?
You are not reading it right. One unfused wire to the underhood fuse box then to starter & alternator. The 50A maxi fuse sends power to the BCM.
But your conclusion is correct.
The difference is that one is a wiring schematic and the other is a power distribution diagram/sketch.
Senior Member
Joined: 06-13-2017
Posts: 180
From: Fairborn, OH
Thread Starter
New Member
Joined: 05-04-2016
Posts: 17
From: MA
Thanks everyone for the comments and info.
donbrew, when I tested from under the hood, I used the strut tower as the ground. Is there somewhere else I should be hooking up to?
Also, am I understanding correctly that the results I'm getting from hooking the tester up under hood don't matter as long as the test results are good from connecting directly to the battery?
donbrew, when I tested from under the hood, I used the strut tower as the ground. Is there somewhere else I should be hooking up to?
Also, am I understanding correctly that the results I'm getting from hooking the tester up under hood don't matter as long as the test results are good from connecting directly to the battery?
Moderator
Joined: 01-23-2009
Posts: 26,448
From: Fredericksburg,VA
When you hook to the battery you are getting results from the battery, not the 13 feet of wire. I guess it could mean something like resistance is fewtile or something.
I also found that it makes a difference which bolt on the strut. There is a ground location on the fender nearby. For some reason the ground conductivity is odd on these cars.
I also found that it makes a difference which bolt on the strut. There is a ground location on the fender nearby. For some reason the ground conductivity is odd on these cars.