Problem Any Help??????
Thread Starter
Instructor
Joined: Mar 2006
Posts: 179
Likes: 0
From: St. Charles MO
Problem Any Help??????
I changed the plugs and wires last night and now I am getting a charging system error message. I did notice that one plug wire was touching the main wire that comes off the alternator so I moved that and it is still giving the message.
Any Ideas????
Any Ideas????
Le Mans Master
Joined: Jan 2005
Posts: 5,611
Likes: 5
From: Thousand Oaks California
Make sure the new ignition wires meet the GM specs for EMI, and that they are "fully" seated at both the spark plug and the coil ends.
Disconnect the battery for 1 min., then reconnect and try again.
Disconnect the battery for 1 min., then reconnect and try again.
Last edited by calemasters; Jun 8, 2008 at 02:39 AM.
Advanced
Joined: Dec 2004
Posts: 62
Likes: 0
From: Vacaville California
Service charging system message
I recently had the Service charging system message on my 05 C6 A4. I took it in and the low freq horn was changed (it blew the fuse) and they also changed the negative battery cable for corrosion.
Thread Starter
Instructor
Joined: Mar 2006
Posts: 179
Likes: 0
From: St. Charles MO
Is it possible that the plug wire laying on the alt wire fried the alt?
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Melting Slicks
Joined: Jun 2006
Posts: 2,690
Likes: 1
From: Northern Calif
new PCM= no joy
raising rpm= no joy
New battery= no joy
at dealer but they are stumped.
5v from PCM as should be to signal alt to charge at idle but when attached to alt the volts on the L terminal wire drop and fluctuate between 1.3 and 4.7 v and alt does not charge at idle. Checked wire L terminal between pcm and alt and it seems to not be shorted. I guess they need to recheck everything because this cannot be that hard. Maybe the circuit back to the PCM is the problem?
any help?
raising rpm= no joy
New battery= no joy
at dealer but they are stumped.
5v from PCM as should be to signal alt to charge at idle but when attached to alt the volts on the L terminal wire drop and fluctuate between 1.3 and 4.7 v and alt does not charge at idle. Checked wire L terminal between pcm and alt and it seems to not be shorted. I guess they need to recheck everything because this cannot be that hard. Maybe the circuit back to the PCM is the problem?
any help?
Last edited by knkali; Jul 11, 2008 at 08:42 PM.