JZX110 into MX83 Help Please

[madmont]

89661-3a680

[hititup]

89661-3a680

that ecu # is from a 1jzge engine (non turbo) see below

Part 89661-3A680 (COMPUTER, ENGINE CONTROL) was found on the following models:

Market Date range Model Frames/Options Found in diagram
Japan 09/1999-05/2007 TOYOTA CROWN, CROWN MAJESTA GS171,JKS175,JZS17*,UZS17* 84-04: ELECTRONIC FUEL INJECTION SYSTEM
Model Dates: Matching Models: Model Options: Links to diagrams:
09/1999-07/2001 JZS171-AEPQF ROY, JPN, SED, 1JZGE, TWC, ATM, 4FC 84-04
09/1999-07/2001 JZS171-AEPSF ROYEX, JPN, SED, 1JZGE, TWC, ATM, 4FC 84-04

[madmont]

Correct ,...........

[hititup]

Correct ,...........

how can i get info for the jzs171 ECU #89661-3A870

[wilbo666]

how can i get info for the jzs171 ECU #89661-3A870

Some drawings from madmont on my wiki <here>

Cheers
Wilbo

[hititup]

Some drawings from madmont on my wiki <here>

Cheers
Wilbo

Thanks.. i mite have to call in a pro to piggyback my IS200 ECU to run the car and leave the JZS171 ECU to run the engine. This was the 1st swap i wire up and dont know nothing about running a piggyback.

[hititup]

JZS171 / JZX110 digital commands (MPX) are not compatible
However I have a hardware solution for that

what is the hardware solution? i need it real bad.

[George]

Analog to MPX converter
Currently supported are JZX110, JZS/UZS17x, JCG11x, UCF2x, UCF3x, JZS16x
Each chassis has its own encoding scheme

A converter can command engine control unit to activate particular mode
Standard set of modes are ECT power/snow, A/C on/off, ELS (idle up for electrical load)
Such a command is sent to ECU via MPX
Each command is activated by appropriate control wire of the converter (connect wire to ground-activate its mode)

[Biggus]

That sounds pretty interesting. Wonder whether it would be something that would help override the cruise control limiter on my Crown?

[George]

It has nothing to do with cruise control. Not even remotely. Cruise control is activated by just one wire from ECU to earth

[Biggus]

My understanding was that the cruise ECU picked up speed signal from the speed sensor on the output shaft of the gearbox via the multiplex and then issued commands to the throttle. I was hoping that if an analog-to-MPX converter existed, an MPX-to-analog converter might too. Sorry for the off topic.

[madmont]

The JZS171 has a speed sensor on the transmission which is used for automatic transmission ecu and cruise control.
I have a JZS161 motor fitted to a manual gearbox . I fitted a rotor to the output shaft to give me a speed signal for the cruise control. It now sends 10 pulses per revolution instead of 12 which enables the cruise control to go to a higher speed and raises the vehicle top speed limitation as well. The cruise control works well and I am not about to test the top speed anytime soon.

[hititup]

The JZS171 has a speed sensor on the transmission which is used for automatic transmission ecu and cruise control.
I have a JZS161 motor fitted to a manual gearbox . I fitted a rotor to the output shaft to give me a speed signal for the cruise control. It now sends 10 pulses per revolution instead of 12 which enables the cruise control to go to a higher speed and raises the vehicle top speed limitation as well. The cruise control works well and I am not about to test the top speed anytime soon.

Sorry to go off topic but i dont know where to put this. my mate doing a 2JZGE swap to his Altezza, 1GFE and he ask me to do the wiring. i get the engine to run But i cant get the speedo to read and his ABS light is on. I just dont know where to get the speed signal from the jzs161 ECU #89661-3A410 we running. can someone say what pin i can get the speed signal from the jzs161 ECU?

[George]

hititup, I fabricate signal converter for that. It takes sp2 signal and alters its frequency and amplitude to suit any analog cluster. ECU still sees proper signal. I've been making these adapters since my 1st conversion (in subscript)

[hititup]

Thanks.you is of great help. I will definitely get 1 of this adapter from you. I am just waiting on my mate to see what else his swap need.