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I supported Toymods
Location:
Perth
Registered:
May 2002
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 Couple of wiring glitches
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Thu, 27 January 2005 14:51
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Hey guys,
I've got a couple of glitches I'm having trouble sorting out. First of all, and I think these are related, when you first connect the battery everything is good, once you switch the ignition on, the charge light on the dash comes on. It doesn't turn off.
The main relay at this point just doesn't turn off either. The car stays off of course, because the circuit open relay cuts the power to the fuel pump. Pulling the relay turns the charge light off, and it doesn't come back until you flick on the ignition again.
I've checked my wiring, and it all seems right, the main relay pin from the ECU, connected to the "positive" end of the relay. The switched power is connected up to the right pin on the ECU, and everything seems the right way around.
I've tried a different relay and no change. I've checked the current draw through the alternator when it's off, and it's not discharging. It seems to run perfectly when it is on. For those that don't know, it's a Gen2 1GGTE.
Cheers,
Nathan
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Registered:
May 2002
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Re: Couple of wiring glitches
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Thu, 27 January 2005 14:55
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So, when you turn the IGN on, the charge light comes on and the main relay closes (like they're supposed to) but they stay on even when you switch the IGN to off?
Tim
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I supported Toymods
Location:
Perth
Registered:
May 2002
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Re: Couple of wiring glitches
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Thu, 27 January 2005 15:11
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Yup. Thats correct.
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I supported Toymods
Location:
Perth
Registered:
May 2002
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Re: Couple of wiring glitches
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Fri, 28 January 2005 00:14
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Any ideas guys? Kinda annoying.
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Location:
Kita-Ku, Sapporo, Japan
Registered:
January 2003
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Re: Couple of wiring glitches
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Fri, 28 January 2005 00:49
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isn't the charge light simply a circuit that provides power to the warning light from IGN, and then earths thru the alternator when it senses low voltage?
sound slike the relay is staying on because of a power loop, and the chrage light is simply a result of the ignition power staying on..??
work out what wires are connected to the relays trigger circuit (on both power and ground side) and then turn it on and multimeter it?
good luck!!
Cya, Stewart
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Toymods Social Secretary
Location:
Sydney
Registered:
July 2002
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Re: Couple of wiring glitches
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Fri, 28 January 2005 00:51
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pull your key barrel apart and clean the bastard out with some contact cleaner/lubricant.
Sounds like there could be something residule which is holding that relay open.
Here are some relay basics for you, in toyota diagramatic form.
# The little windy thing looking like a coil, is in fact the coil of the relay. Applying 12V across this actuates the relay, and connect the "contacts" together.
NB: this coil can sometimes be represented by a rectangular box, with or without a diagonal line through it.
# the bit that sort of looks like a door is the contacts, which are controlled by the coil.
So now the questions must be asked - are we referring to your EFI main relay here?
have you removed the external regulator from the car? This is important as im 99% sure the 1ggte has an internally regulated alternator
When i did the pimp with the interally regulated alternator, i wired the alternator's little 3-pin plug up to where the external regulator previously plughed in (6-pin plug - 2x3). The only wires to be used here are "BATTERY", "IGN" , and "CHRG LIGHT", which are easy enough to test. Make sure you have these correct.
All that done, if its still doing it - you've given it homo disease.
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I supported Toymods
Location:
Perth
Registered:
May 2002
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Re: Couple of wiring glitches
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Fri, 28 January 2005 01:03
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That was what I was thinking for the charge light. The 1GEU alternator only had three wires going to the back of it, so I've wired these up the same, only with the 1GGTE plug.
I'll give the key barrel a clean, can't hurt. I get how the relay works, yes it is my main EFI relay. I've checked across one side of it and found the earth pin. I then connected the other pin on that side to the main relay pin on the ECU. The switched power for the ECU is spliced into the wire on the "negative" pin on the switched side of the relay.
Will double check the wires too.
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Toymods Social Secretary
Location:
Sydney
Registered:
July 2002
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Re: Couple of wiring glitches
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Fri, 28 January 2005 01:12
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YUP 
next thing is - was the 1ggeu alternator internally or externally regulated??? there is a big difference!!
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Location:
Kita-Ku, Sapporo, Japan
Registered:
January 2003
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I supported Toymods
Location:
Perth
Registered:
May 2002
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Re: Couple of wiring glitches
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Fri, 28 January 2005 04:44
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| THE WITZL wrote on Fri, 28 January 2005 09:12 |
YUP
next thing is - was the 1ggeu alternator internally or externally regulated??? there is a big difference!!
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No idea, how do I check? And no, I don't have the old one.
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I supported Toymods
Location:
Perth
Registered:
May 2002
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Re: Couple of wiring glitches
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Fri, 28 January 2005 04:50
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| oldcorollas wrote on Fri, 28 January 2005 10:32 |
whu? (i must still be half asleep  )
so normally, IGN provides power to the efi main relay coil, and the other side is always earthed?
you connected the "other pin on that side" (does that mean it's an earth? or it's the power for the relay coil?) to the ECU main relay pin?
does the ECU provide a power or an earth to trigger relays? i would have thought it switched the earth side of the relay, meaning that that will be the only earth for the relay.
"The switched power for the ECU is spliced into the wire on the "negative" pin on the switched side of the relay.:
umm, any chance you could draw a simple diagram of this? you could be providing a power loop to keep the relay on perhaps?
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If I'm copying the diagrams correctly. The coil on the main relay is switched via the ECU, and then obviously the other side is earthed, this is what I meant. The main relay is being correctly switched on, but just isn't switching off.
Not really in a place where I can knock up a diagram. I'll try to describe exactly what I have connected to each pin. The ECU main relay pin is connected to the coil on the main EFI relay. The other side of this coil is earthed as per factory setup. The battery power is connected to the switched side of the main EFI relay via the EFI fuse (also as per factory) and then the switched power is connected to the B+ on the ECU. Does that make sense?
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Location:
Adelaide, SA
Registered:
May 2002
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Location:
Kita-Ku, Sapporo, Japan
Registered:
January 2003
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I supported Toymods
Location:
Perth
Registered:
May 2002
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Re: Couple of wiring glitches
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Fri, 28 January 2005 09:42
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Haha, don't worry, I had the theory downpat, but had mis-read the diagram on the side of the main relay. Now it switches off as it should. The charge light still comes on with the ignition, but I don't know if it is supposed to do this.
Now, to find out why my tacho doesn't work 
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Location:
Wollongong
Registered:
November 2004
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Re: Couple of wiring glitches
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Fri, 28 January 2005 10:09
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If you wired it how Oldcorollas has posted... LOL, that'd be the problem I from my experience... B+ is a mains power... LOL
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I supported Toymods
Location:
Perth
Registered:
May 2002
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Re: Couple of wiring glitches
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Fri, 28 January 2005 10:12
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Actually, his diagram matches the correct ones, and it is how it's wired up.
She turns off fine now And oldcorollas, the ECU has battery power too
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Location:
sydney
Registered:
March 2003
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Re: Couple of wiring glitches
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Fri, 28 January 2005 10:32
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its the charge light that causes this
alot of old cars do this when fitted with new engines
on new cars there is a resistor across the 2 wires on the charge
light
on a usa car it has a 510 ohm resistor across the 2 wires that goto the charge globe
you could try that
think it satops feedback that keeps car running
but try it at yr own risk
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I supported Toymods
Location:
Perth
Registered:
May 2002
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Re: Couple of wiring glitches
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Fri, 28 January 2005 10:33
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Charge light that causes what?
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Location:
sydney
Registered:
March 2003
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Re: Couple of wiring glitches
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Fri, 28 January 2005 10:48
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the charge light causes feedback which keeps abit of voltage thru the system
this causes the efi relays to stay on and engine keeps runnin
after u turn the key
try this
disconnect the charge light start car then turn car off
if it turns off then its feedback thru the charge light
its a common thing
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I supported Toymods
Location:
Perth
Registered:
May 2002
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Re: Couple of wiring glitches
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Fri, 28 January 2005 10:50
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My bodgy wiring was the reason the relay was staying on
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Location:
sydney
Registered:
March 2003
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Re: Couple of wiring glitches
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Fri, 28 January 2005 10:53
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ok sorry didnt read it all hehe
always used to get this prob on datto 1600s with fjs or srs
used to fit a diode to charge light
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Registered:
May 2002
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I supported Toymods
Location:
Perth
Registered:
May 2002
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Re: Couple of wiring glitches
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Fri, 28 January 2005 12:37
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Bahaha, I was just coming on to say that 
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