92 LS400 - Charging System Problem

[Joe S]

All was fine with the car until I took it in to a shop due to A/C
leak. They said they found a corroded O-Ring somewhere beneath the
battery that had been ruined.

So, they fixed that, and A/C is working great, but tonight while
driving (100 miles after picking up the car) the battery drained out
while I was driving.

My suspicion is that the A/C guy unhooked something that connects the
alternator to the battery and didn't hook it back up when he was done.

For reasons of convenience, I'd like to find the problem myself rather
than take it back to the shop, if possible.

Any ideas what someone might have undone in the vicinity of the
battery to do that service that would disconnect the charging system?

Thanks much in advance for any help,


Joe

[Ray O]

Post by Joe S
All was fine with the car until I took it in to a shop due to A/C
leak. They said they found a corroded O-Ring somewhere beneath the
battery that had been ruined.
So, they fixed that, and A/C is working great, but tonight while
driving (100 miles after picking up the car) the battery drained out
while I was driving.
My suspicion is that the A/C guy unhooked something that connects the
alternator to the battery and didn't hook it back up when he was done.
For reasons of convenience, I'd like to find the problem myself rather
than take it back to the shop, if possible.
Any ideas what someone might have undone in the vicinity of the
battery to do that service that would disconnect the charging system?
Thanks much in advance for any help,
Joe

Check the battery cables to make sure they are tight and the cables are
firmly attached to the clamps. Follow the negative battery cable to where
it is grounded to the body. If you have a continuity checker, check for
continuity between the body and negative battery cable.