Inverting Alternator Charge light

**BradW** · 27-06-2006, 08:07 PM

Originally Posted by takai

As several have said, the voltmeter works completely independently of the regulator. On the SX corollas which came with a voltmeter not a warning light, the L pin just goes off into the loom and connected to 12v.

Basically when the Alternator starts spinning it will change the voltage differential.

By "SX corolla" do you mean as fitted with the 100kw 4age?
If so, according to the diagrams in the tech docs on the old site, they had both warning light and voltmeter.
On these vehicles the "L" pin goes to the warning light via the "charge" fuse.

**Mos** · 27-06-2006, 08:46 PM

Some 1G-GTE alternator charge light outputs are "reversed" - ie they go to ground when OK.
Don't ask me why or which ones but that's how it is

Mos.

**JustCallMeOrlando** · 28-06-2006, 08:57 AM

Haha, that would explain a lot

It amazes me just how many things Toyota wanted to do...differently...on the 1GGTE because they could. I shall endeavour to check tonight to see if I am one of the lucky people.

**takai** · 28-06-2006, 09:08 AM

Originally Posted by BradW

By "SX corolla" do you mean as fitted with the 100kw 4age?
If so, according to the diagrams in the tech docs on the old site, they had both warning light and voltmeter.
On these vehicles the "L" pin goes to the warning light via the "charge" fuse.

Yeah, it is a slight ideosyncracy. The dash definately didnt have a warning light, but the L pin did go into the loom via a resistor. Thus simulating a warning light.