CAN THE PCM MAKE A NEW ALTERNATOR GO BAD?

2003 Mazda 6

Tiny

Gman316

July, 11, 2012 AT 2:39 PM

I replaced the alternator twice. After I replaced it the first time I had it checked and it was bad. So I replaced it again and the charging system light is still on and the problem is still occuring the same exact way it was before. Also just put a brand new battery in when I replaced this alternator. The problem happened as I was test driving it around the block. So my question is can the PCM cause the alternator to go bad or did I just get another bad alternator or is there some other problem?

FOUND 1210 RELATED QUESTIONS

3 Answers

Tiny

Docfixit

July, 11, 2012 AT 2:45 PM

PCM would not normally make ALT fail BUT PCM does regulate ALT output so PCM could keep ALT from working

Tiny

Gman316

July, 11, 2012 AT 2:55 PM

So should I take it to see if the PCM is bad or just replace the alternator again?

Tiny

Docfixit

July, 11, 2012 AT 2:59 PM

Remove ALT from car have tested if good then PCM at fault or wiring

Please login or register to post a reply.

Replace PCM Computer
Code Read Retrieval/Clear Mercedes-Benz C230
Code Read Retrieval/Clear Honda Civic
Code Read Retrieval/Clear Mercedes Benz
How to gather codes Ford Explorer
Code Read Retrieval/Clear Scion XD
How to read codes Chevrolet Blazer