light flashing (1990 camry) - Toyota Nation Forum : Toyota Car and Truck Forums

d\'dario · 03-08-2002, 10:22 PM

hi all, i'm also a newbie here so don't rattle me too hard,i have a gen 2(1990)3s-fe
and latley while driving all my exterior & interior lamps flash when the engine is running,i thought it was a voltage regulator
problem so i changed the alternator & it's still doing it,is the regulator controlled by the ECU? am i the only one who has had this problem? does anyone know where i can get a charging circuit schematic (preferably from a Toyota manual,Hanes bites) thanks for all your help.

<font size=-1>[ This Message was edited by: d'dario on 2002-03-08 22:22 ]</font>

speedemn · 03-09-2002, 01:48 AM

Do you mean flashing as in flashing on and off? That is what "flashing" means.

I am assuming you mean DIMMING. If that is the case, then it could either be a weak bettery or a weak alternator or both. I suggest taking it to a shop to test the whole system. Toyota even does it on tuneups if you ask them to. It shouldn't cost much at all.

Good luck.

d\'dario · 03-09-2002, 01:43 PM

when i say flashing,i mean from full illumination to about 50% depending on the rpm of the engine,the battery has been tested & is good.

speedemn · 03-09-2002, 04:22 PM

Quote:

On 2002-03-09 13:43, d'dario wrote:
when i say flashing,i mean from full illumination to about 50%

AKA "dimming." :smile: Flashing would be on-off-on...

Anyway, read my last post for the problem. Battery/alternator. Get the system checked out like I said.