mx83 1jz auto issue

[ZZT231]

Try this... I've tried, but my car hasn't been able to leave the drive way...
http://forums.toymods.org.au/index.p..._view=&start=0

That didn't work so I'm going to go back to the 4 pulse thingy in my car...

+ve Rep Mos, great explaination...

Cheers.

[Ribfeast]

I thought Sideshow made a converter box to fix this issue? I have a 1JZ cressida GLX with no ABS, and uses speedo cable. I get code 61 too.



This is what the speed sensor and gear looks like on my spare A341LE JZX81 box.
The Jaycar kit might be the way to go it seems, has anyone else tried it?

[Mos]

MacroP
Thanks for the correction.
Engines out of JZX90s, JZS147s, JZZ30s, a bunch of 1UZs, etc use the 2 pin inductive sensor with the 4 blade rotor.

The Jaycar kit, in theory, can adjust from 1% to 99% either up or down.
So the 32p signal can be adjusted down to 3.84pulses (88% down) or 4.16pulses (87% down) which should be close enough.
Given it only goes up to 99% it would only be able to (just under) double the signal, hence can't multiply by 4 (although you could try 2 in series for 3.96).

Note - I have not tried it, but these are the specs.

Ribfeast - that's the sensor that spits out a 10V square wave given the correct power supply (usually powered by the ABS ECU).

There is also a speed sensor available (somewhere - I think Sideshow mentioned it) that goes inline with the speedo cable that can be obtained in various output rates. The speedo drive usually divides output revs by about 5, so if you get a 20ppr sensor for the speedo drive it will output close to the required 4ppr of output shaft.
The sensor has an open collector output which works fine with the pullup on the SP2 input of the ECU (or at least a JZZ30 ECU).

HTH.
Mos.

[jeffro]

Info is great thanks people, the problem is that i dont know what signal is needed for the 1jz sp2 wether it is one pulse per revolution or 4 or 8 because all jzx81 came out with abs and the abs computer is different to our mx83. my problem is finding out what signal is needed, i think will have to just experiment with the different signals. Will let everyone know when i find the solution

[Squeak]

this problem has also been the bane of my existence since also converting to 1j in 2002, mx83 without abs,have had no trouble tho.
will be glad to have an outcome and stop the blinking light.

[SL666]

Its bloody painful...

[sideshow]

i do have many pulse adjusters

they are 200 bucks each

the first guy who brings car to me to fix the abs and spd problem

i will only charge for parts so that way i can figure out what pulse reduction is correct

im pretty sure i know but have not had the chance to test it

but any car after that ill have to charge for labour aswell if they want me to do it

another thing is on a chaser 1j its not as hard and device is only 200 bucks

on a soarer 1j it has a 2 wire signal so the device is worth 300 bucks

the other prob is the cressida needs 32 pulses thats on a 7m auto

a chaser auto has 32

but a soarer auto has 4 pulses
tryin to get 4 up to 32 is a pain with just electronic devices
i have tried it
the abs worked ok but under 30kph it locked the rear brakes up slightly

its very complicated depending what version 1j u have and also if cressida has abs or not

so tryin to explain it on this forum is hard without alot of info on what car setup is

[Mos]

jeffro,
You could try using the jaycar kit or wait a week or so - I need to hook up the SP2 signal to the 2JZ (also in MX83 grande) so you could wait till I'm done to know for sure

The pins required are on the smaller grey plug from the engine loom to the chassis loom. The wires are in a square, colours:
Grey/Green | Pink/Blue
Violet/White | Violet

The function is:
Grey/Green - ABS Speed sensor signal (to ABS ECU)
Pink/Blue - GND (power ground for sensor through ABS ECU)
Violet/White - SP2 signal (from ABS ECU to engine ECU)
Violet - +10V (power for sensor from ABS ECU)

Grey/Green would be the input to the jaycar unit (or other signal divider) and Violet/White would need to be cut and the end travelling to the engine loom would connect to the output of the signal divider unit.

I'll see what I can do this weekend - the 2JZ ECU needs 4 pulses per rev as that's what came out of the gearbox. I would expect the 1JZ needs the same.

Mos.

[Ribfeast]

I have MX83 without ABS (cable speedo), but I still have the damn light flashing Is there an easy fix?

[Mos]

Ribfeast,
What did your engine come out of? If it's a JZX81 the fix is the same but check the diagnostic codes.
Mos.

[Ribfeast]

I get code 61. JZX81 engine 1989 GLX cressy. What is the fix for mine? There seems to be a whole stack of different ones mentioned above and I don't know which one to do Thanks!

[Squeak]

ribfeast , i'm with you non abs and a blinking light, doesn't worry me as the stanza to work isn't a problem ,however my beloved wife is still complaining after all these years,,

[sideshow]

another thing u are forgettin is

the speedo needs 4 pulses every revolution of the speedo gear
which is about 1.3 pulses every revolution of the tailshaft


the abs sensor works of the output shaft and that needs a certain amount of pulses per revolution of the tailshaft


so the speedo pulses and the abs pulses do not relate together in any such way


the easy fix is to hook up the abs ecu

or to fit a divider signal

im pretty sure i know what the divider amount is but i need to fit one to a car

to make sure it is correct

[Mos]

the speedo needs 4 pulses every revolution of the speedo gear
which is about 1.3 pulses every revolution of the tailshaft

Are you sure it's not approximately 4/5 - 0.8 pulses per rev of tailshaft?

the abs sensor works of the output shaft and that needs a certain amount of pulses per revolution of the tailshaft

Yep, 32 pulses per rev of output shaft for ABS.

And 4 pulses per rev of output shaft for SP2 (on JZS147, JZZ31, based on first hand experience).
And 1 pulses per rev of output shaft for SP2 on 7M MX83, older 1UZs (based on previous posts).

The Speedo pulse train is related to the others, in that for a particular application it will always be a fixed ratio - agreed that it's not as useful in that it can't as easily be divided or multiplied.
However if you want 1 pulse per rev of output shaft you could take the speedo drive pulses and use the jaycar speed adjuster, with an addition of 25%, and you would get your 1 pulse per rev of output shaft - this would be useful for 1UZs with 1pprts SP2 in MX83s without ABS...

Mos.

[MacroP]

Are you sure it's not approximately 4/5 - 0.8 pulses per rev of tailshaft?
Yep, 32 pulses per rev of output shaft for ABS.
Mos.

It's normally a 6/18(1:3) tooth gear reduction for the speedo sensor and the sensor output would be 4 ppr so that would be 'divide by 3 and multiply this by4' which is 1.333