My car is not charging I put a brand new.

Tiny
TIMOTHYBROWN
  • MEMBER
  • 1992 BUICK PARK AVENUE
  • 15,000 MILES
My car is not charging I put a brand new alternator on it and a brand new battery And new cables I recently had to bypass the security system I bought a module and installed it to bypass it Can the that security systems send a signal to my alternator telling it not to charge? And Can low voltage cause the that system to go off?
Image (Click to make bigger)
Thumb
Tuesday, February 19th, 2013 AT 7:15 PM

2 Replies

Tiny
JDL
  • MECHANIC
  • 16,098 POSTS
Did you check for excite voltage at the alternator. Without excite voltage, the alternator won't work. Does the charge lamp work?

Check the alternator bat terminal, with everything off, should be battery voltage on that terminal. If not, something wrong with that circuit.
Was this
answer
helpful?
Yes
No
+1
Tuesday, February 19th, 2013 AT 7:50 PM
Tiny
JDL
  • MECHANIC
  • 16,098 POSTS
Just to add, in the diagram, L terminal is excite voltage. Note the fuses.
Image (Click to make bigger)
Thumb
Was this
answer
helpful?
Yes
No
Tuesday, February 19th, 2013 AT 7:54 PM

Please login or register to post a reply.

Related Alternator Not Charging Content

Alternator Replacement
VIDEO
Alternator Replacement
Instructional repair video
Alternator Replacement
GUIDE
Alternator Replacement
Got a red battery warning light on? This most likely means the alternator has gone out and needs a replacement. To confirm the failure use a voltmeter to test the alternator...
VIEW MORE