2002 Lancer - Only Battery light On - Battery & Alternator checks good
#1
2002 Lancer - Only Battery light On - Battery & Alternator checks good
I have a 2002 Lancer with only the battery light on. The brake light is not on. I had the alternator & battery checked at 3 different places and both checks good.
Any idea what would be causing just the battery light to be on ?
Thanks
Waid
Any idea what would be causing just the battery light to be on ?
Thanks
Waid
Last edited by waid302; 04-01-2015 at 12:28 PM.
#5
i would trust a multimeter over a telephone for diagnosing electrical problems.
15.5 seems high, which points to a regulator issue.
12.2 seems low, which points to an old battery.
if it was reading low and "overcharging" to compensate, this would explain it all.
replace the battery.
15.5 seems high, which points to a regulator issue.
12.2 seems low, which points to an old battery.
if it was reading low and "overcharging" to compensate, this would explain it all.
replace the battery.
#7
Found the problem! The Orange battery sense wire (Pin 2 on B-25) at the Alternator was broken but still attached to the alternator. I started from the Battery and traced it back to find where it was disconnected. Once I connected it, the light went away and all is well.
What is interesting is I went to 4 different auto parts stores with the Alternator and Battery and got 4 different answers as to what is bad. One AutoZone said the Alternator was bad and other one said it was good and both said the Battery was fine. O'Riley said Battery and Alternator was fine. CarQuest said Battery was bad and Alternator was good. So go figure!
Thanks
What is interesting is I went to 4 different auto parts stores with the Alternator and Battery and got 4 different answers as to what is bad. One AutoZone said the Alternator was bad and other one said it was good and both said the Battery was fine. O'Riley said Battery and Alternator was fine. CarQuest said Battery was bad and Alternator was good. So go figure!
Thanks