USA car? 3.6 not 3.7:
so did you do all the tests, ??????
belt not lose,
13.3vdc to 15vdc and never less. running.
right, idle is 800RPM never ever less.
all fuses good for sure to PCM brain.
the PCm many be the ALT Regulator, you do know that fact too.
the alternator has a huge fuse off its huge wire stud cable. at ALT and must not blown out.
no scan tool fixing modern cars lacking scan tool is FAIL, hard
it will tell what is wrong if you'd just look.
P0622?? DTC errors means gen field dead.
the alt is for sure external controlled says BOSCH.
and the shop manual too , simple yeas, just 3 parts
no counting bad wire, top thing is fusable link.
see vast noob swap a gen, and not pull battery neg -lug first
and blow the fuse link to H3LL. or make it look burned and 1/2 dead.
bottom left is PCM , bad. both G grounds must not be rusty.
ok. count the 4 connections. and none bad.
Update: Ok, I looked again (and have replaced again) the fusable link. It is "not" for the Ignition ...it is for the Interior/Parking Lights. Which kills the radio, parking, int lights and causes a "Lift Gate" alarm on the Dashboard to appear.
I noticed that this thing blows even before I start the car. I can blow when I switch the key to the ACC position. I have looked at all the lights....the wiring I cannot find a short anywhere. Could this be a bad ignition switch causing this? If so, how easy are they to replace...the air bag makes me nervous ;-(
Thanks.
PROBLEM SOLVED!
So I scanned the Internet and came across a TSB on the G202 ground problem. That TSB had ALL the same electrical circuits listed that I was seeing problems with. The ground was good....so I started nose around under the dash looking for loose wires. I noticed a wire bundle really close to the Emergency Brake Gear. When I release the brake...the bundle moved.
Sure enough, closer inspection revealed that this bundle was being abrated by the Emergency Brake teeth and it cut through all the insolation over the years. The bare hot leads were grounding against the frame of the Emergency Brake.
A couple of pieces of electrical tape and a wire tie fixed this.
I'm sure that would have cost me serious $$$ for a shop to find. It was not "obvious" in the least!
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