JZX81 Body Wiring Diagrams - Hydro fan & Power Steering ECU

**Gavatron** · 20-05-2008, 08:06 PM

As the title suggests, I am having trouble finding any body wiring diagrams for JZX81's. I need to know where the Hydro Fan ECU and Variable Power Steer ECU get there signals from, and which wire/pin they go to.

Thanks in advance.

**Gavatron** · 21-05-2008, 10:10 PM

Surely someone has this info somewhere?

**Mos** · 21-05-2008, 10:46 PM

Progressive power steering only gets speed signal (same as SPD or SP1 on ECU and cruise control).
Hydro fan gets (from memory) radiator temperature sensor (2 wires, 1 of which also goes to diagnostic connector), power (2 wires), solenoid (2 wires), tacho input, triple pressure switch, air con input... and I think I'm forgetting something, there should be one more.
I'm in Brisbane right now so no access to notes. Remind me on the weekend.

I have (on loan) the JDM JZX81 wiring books that I intend to scan but traditionally it will be a few years before that happens.

Mos.

**Gavatron** · 21-05-2008, 10:50 PM

Thanks Mos. Will definitely be reminding you

**takai** · 21-05-2008, 10:50 PM

Mos send them down, i can scan them in

**cambelt** · 21-05-2008, 10:51 PM

I think the last one is IDL input ( idle pin from the tps) , again without notes.
Dave

**Mos** · 21-05-2008, 10:52 PM

Don't think so Takai

.. I had to swear on my firstborn to be able to borrow them

...

**takai** · 21-05-2008, 10:55 PM

Heh, ok fine then. Speaking of which how is that going? Made up the lost time from wiring Ed's car?

**Gavatron** · 23-05-2008, 10:36 PM

Back to civilisation yet Mos?

**Ribfeast** · 09-06-2008, 09:46 PM

I used a 1UZ crown PPS computer in my 1JZ cressy, works fine. Hooked it up to the speed signal, earth, 12V, and 2 wires to the power steering rack solenoid.