2JZ-GTE OEM Idle Air Control Valve Wiring

[QXZ9027MKII]

Hi,

I'm trying to wire in the factory 2JZ-GTE IAC to the Motec M600,

OEM IAC Valve specs:

- its a stepper motor type with 4 coils,
- The IAC Valve terminal has 6 pins:
- 2pins are designated to to the battery + (B1 & B2)
- 4 pins are controlled via the ECU. and they are designated as ISC1, ISC2, ISC3 & ISC4


Mode of operation:

- as Per the factory Manual it states that if you connected the battery terminals to B1 & B2, and then connected the Negative terminal in the following order----> ISC1, ISC2, ISC3 then ISC4 The valve will open and vice verse to close the valve.

Whats the wiring method will be, do i connect Aux5 to ISC1, Aux6 to ISC2, Aux7 to ISC3, Aux8 to ISC4.

For more Info Check the Attached WD Images.

2JZ-GTE Idle Control Valve Wiring Diagram.jpg (36.41 KiB) Viewed 17047 times

2JZ-GTE Idle Control Valve.jpg (78.44 KiB) Viewed 17116 times

[MarkMc]

Attached is a pinout based on the ISC valve from a 1UZ which should be the same as the 2JZ.

Don't use any Integral Gain, it is not necessary fro a stepper motor.

[QXZ9027MKII]

Thanks Mark for the info gona check out and see what happens. just trying to find some time.

[The Flash]

i have the same question
do i have to use A31A32 A33 A34 in order to make this work?
thanks

[MarkMc]

Yes, Aux 5, 6, 7, and 8 are the only ones that can control a stepper motor.