window and tach
 

sorry, but i gave up looking at tsrm
cuz it was giving me a headache

2 issues,
windows not working,
where is the fuse
where is the relay

stock tach is not working,
which connector is it?

there was a thread that helped me out on the window search: passenger window wont open

I assume you have checked the relay cluster before the passenger door panel, under the glove box, ya?

I don't remember what they are sinse I only metered them once.

I went through this Tach issue and just ended up replacing it with a aftermarket one. The wire you looking for comes off the ignitor box and wires straight to the back of the gauge cluster. This wire is black and gives the tach its signal while there is two other wires involved in the tachs system the black one is the signal from the ignition system that moves it. The plug on the gauge cluster you are looking for is the one right behind the tach and the black wire is like the 6th or 8th one from the door over. Easiest way is to trace out the copper on the board on the cluster and see where it goes. The nice thing is n/a 7M's, 7MGTE, and 1JZ use the same wire to get a signal just in different spots. As for the connection comming from the hood to the dash for this wire look at the connector that runs up into the dash not the lower two it sits up in the dash and runs over to the cluster on a 1JZ it is the IG1 connector on a 7m it is MA2 but not sure it has like 10 or 12 pins you will see the black wire in it it is the only one. As for the window issue the wondows dont run off a fuse they are a straight shot. Check the window switches if the driver side switch goes bad then they both dont work just remember that it gets all the power to run to the passenger side.

i know this thread is kinda old,but i jus had the time to work on my car lately

still havent fixed the window problem yet
the tach imma do that this week and let everybody know the results

but back to the window. on prior post, the guy mentioned the relay cluster on the passenger side of the car

now please please please, does anybody know which relay it is?
or is there any fuses that i should be looking for?

need to get this fixed soon, and i cant get any help from the tsrm

Check the power running to the master window switch. The passenger side switch is powered through the master and if the master isn't recieving power the passenger switch won't work.

I don't know of anything else that's specific to the window's power. The 30A circuit breaker powers the master switch, but also the locks and power seat.


EDIT: heh, guess what both of your porblems have in common.... the 7.5A Gauge fuse. ;) Although I think if it were that fuse more things wouldn't be working.

if its the circuit breaker, then my locks and my seat wouldnt be working either but they work fine both of them, checked them earlier,
and which 7.5 fuse are you saying?

ok i went thru tsrm again,

seems im missing two things, i dont know where to look for them but

where is the:
1)30A PWR CB
2)Power Window Main Relay?

They're both in the driver's side kick panel. I suspect the 7.5A Gauge fuse is the culprit... it may not even be completely burned up, just not passing enough current.

It's the top left fuse in the main fuse cluster:
http://www.cygnusx1.net/Supra/Librar...px?S=Main&P=16

Imma go take a look at that,
But which one and where exactly is the main power relay?

R/B No. 5

http://www.cygnusx1.net/Supra/Librar...px?S=Main&P=22
http://www.cygnusx1.net/Supra/Librar...px?S=Main&P=15

http://www.cygnusx1.net/Supra/Librar...px?S=Main&P=22
Bottom of the page has a pic of both, they are the middle two.

ok sum update, i was doing a bunch of wiring and re-wiring my gauges earlier
so...
got the tach issue done with
jus used the black wire coming from the harness at the back of the gauge cluster

but still stuck on the stinkin window issue, dont seem to get any power on any of them,

any way i can fix this without spending anything?
and if the relays are broken how can i find out for sure?

Use this schematic as a guide.
http://www.cygnusx1.net/Supra/Librar...x?S=Main&P=094

Pull the master switch in the door.
Turn on key till dash lights come on or just start it.
Check the plug for 12V on pin 1 the blue wire and check for a good ground on pin 5 the White with black stripe.
Turn off key.
If no power with good ground pull the main power relay.
Turn on key and and check for 12V on pin 2 and pin 1. They should both have 12V. Pin 1 energizes the main relay when you turn on the key and start the car and stays powered till you shut off the car.Pin 2 is power from the 30A CB that feeds the switch when the relay is energized. If no power on 2 then change the CB or try and reset it. The CB either heats up and trips when too much current and resets itself when it cools down or you have to manually reset it. I havn't looked at it so I don't know which it is.
Try those steps and let us know how it goes.

ok , tried those steps today and still no luck

pull the main switch off the door,
with a good ground i tested the blue wire nothing
i tested the white with black wire nothing

so i went to the main power relay
with good ground i tested all pins
and i got a power on the number two pin, and none on the other 3

so with the main power relay off, i went to the 30A Power CB
i got power on the pin 1 and none on 2

what does this mean? and how do u reset the CB

There's a small hole in the metal cap of the circuit breaker. You just need to stick in a small screwdriver or a straightened paperclip to rest it.

With the main relay out you have power on pin 2 and nothing on pin 1?
That means the CB is good and the main power to the relay is not good.
Check the 7.5 Guage fuse. Thats the power to the main power relay. But if that fuse was blown most of the guages would not be working. You could pull the 7.5 guage fuse, find out which side has power and read the Other side to pin one of the main power relay pin 1 for continuity.
It sounds like there is an open wire between the Guage fuse and the main power relay.
This main power relay also goes to the power seat lumbar, does that work?

seat lumbar works fine too, so does the power locks and the power seats

UPDATE :

i just wanted to sum everything up since, i got on a thread good enuff for a sticky

so the tach
i used the black wire on the back of the gauge cluster, it is directly behind the tach, its the only black wire on the harness, its 6th to the right from the driverside of the car,
wired it up to the aftermarket tach and it works beautifully

the window issue, after checking all of them
its was the main power relay after all, but thank god i got a parts car,
so i replaced everything,
including,
the 7.5 gauge fuse
30A ciurcuit breaker
main power relay
and the main window switch

so hopefully this thread would be any help to anybody that might have the same problem
thanx to cre, and foogoo for ur patience and your help

Definitely a helpful thread. I'm going to have to do this to the supra I am buying in a few days. I'm just glad I have a reserve for parts that are needed. The pass. window works, but the switch doesn't, so once I go through this little check, I will know for sure. It is difficult to find good walk-throughs on other sites, so thank you very much!