Mazda 3 battery light on when heaters on
#1
02-03-2021, 04:40 PM
Mazda 3 battery light on when heaters on
Hi
I got Mazda 3 bk 2009 I had issues with this car last month after battery change 2 weeks it was running fine the is start rough idle and cut off while driving mainly slowing down,
Battery light changed alternator and still was cutting off then a garage said is wrong battery so changed the battery again so far the car has not ran rough or cut off.
The problem i getting not that when the car got the heaters on full the battery light comes on soon as I switch the hetears off the battery goes off.
Battery and alternator is new
thanks
I got Mazda 3 bk 2009 I had issues with this car last month after battery change 2 weeks it was running fine the is start rough idle and cut off while driving mainly slowing down,
Battery light changed alternator and still was cutting off then a garage said is wrong battery so changed the battery again so far the car has not ran rough or cut off.
The problem i getting not that when the car got the heaters on full the battery light comes on soon as I switch the hetears off the battery goes off.
Battery and alternator is new
thanks
#2
02-04-2021, 03:27 AM
Alternator is controlled by the PCM.
Hook up a volt meter to the battery, what is the voltage at idle with the heater off vs the heater on?
Hook up a volt meter to the battery, what is the voltage at idle with the heater off vs the heater on?
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