03 Accord Starting issues

nickb2

Wrench. I help when I can
#20
Also, there was a recall for these accord on the interlock.

This also may be your problem. Check it out. This is why I am also assuming you may have a problem there, as it was very common enough that the company recalled this very situation. Screenshot (43).png
 

nickb2

Wrench. I help when I can
#21
I know I can get confusing sometimes, but my logik is sound. You need to see 12v at relay to suspect the starter.

For me this is simple, but for a DYer, I can se how this is confusing. Maybe one of my colleges here can simplify.
 

nickb2

Wrench. I help when I can
#22
Of note, I have seen a few guy's check 12v at relay with a led tester, you do not want that. A DVM is essential here.
 

billr

wrench
Staff member
#24
"Relative" for voltage measurements means "where the other meter probe is connected". When putting one probe on a starter terminal, looking for 12V, I want the other probe on the starter case. Then you won't get confused by poor ground connections from the starter to engine (rare!), or engine to battery. If the main 12V to the starter is OK that way, then move the "reference probe" to the battery and try again; that will show if there is a problem in the ground path. It is simply a systematic way to check the power and ground independently and definitively.

Trust me, I would not do anywhere near as good as you if this was a French-speaking forum!
 

nickb2

Wrench. I help when I can
#25
"Relative" for voltage measurements means "where the other meter probe is connected". When putting one probe on a starter terminal, looking for 12V, I want the other probe on the starter case. Then you won't get confused by poor ground connections from the starter to engine (rare!), or engine to battery. If the main 12V to the starter is OK that way, then move the "reference probe" to the battery and try again; that will show if there is a problem in the ground path. It is simply a systematic way to check the power and ground independently and definitively.
So this in essence, is how to measure a voltage drop in proper english??
 
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nickb2

Wrench. I help when I can
#26
Trust me, I would not do anywhere near as good as you if this was a French-speaking forum!


I would not ask this question if I was not serious.
 

nickb2

Wrench. I help when I can
#29
The relative term got me stayed away for sure. I was confused because relative does no come up in our dictionary in relation to 12v systems and I got confused in the translation.
 

billr

wrench
Staff member
#30
Are you un-confused now? Voltage is always the electric potential between two objects. If you say you have "X volts" someplace, you have to specify what the other place is; the "reference" for that reading. Birds can happily stand on a "20KV" power line because that is 20KV relative to one of the other wires, which they aren't touching, so there is really zero V across their body. Now, if a big bird with long wing-span touches two wires with its wings... you get flaming birdie. I think some forest fires have been attributed to that.