R34 GT-T cycling ABS pump

[SandyBill]

Hello just wondering if anyone ever worked out a way to purge the abs unit in a 33/34 without a Nissan consult-1 scan tool. If not does anyone know where or how I can get a hold of one of these bloody scan tools nowadays, cheers.

[joshuaho96]

On 1/10/2023 at 1:29 AM, SandyBill said:

Hello just wondering if anyone ever worked out a way to purge the abs unit in a 33/34 without a Nissan consult-1 scan tool. If not does anyone know where or how I can get a hold of one of these bloody scan tools nowadays, cheers.

I believe Consult-2 also works. Unfortunately Nissan did not implement a way to manually run the ABS motor by jumping a wire in the diagnostic connector or put a bleeder on the module block itself. Someone else can jump in if I read the FSM wrong but there is only mention of how to clear codes without a scan tool. So if you don't have a scan tool you need to somehow jump pin 5 on the ABS actuator module to ground without disrupting the other connections with a momentary switch:

[SandyBill]

Thanks heaps for the reply Josh

It would have been nice if the consult-3 could talk to older Nissan's with some sort of adaptor..

I'll just have to see if I can do the old jump on the brake pedal to cycle the solenoids or reverse bleed the system but I'm worried reverse bleeding will just fill the master with air instead haha.

Thanks man I'll keep it in mind about jumping pin 5 if all else fails! Kudos

There used to be a PC program you could download called conzult that covered all models in the consult scan tools and gave you entire access of all onboard computers just like having the real unit but they ended up settling it's use for the 300zx only, due to not enough sales. I'd pay $300 for that in a heartbeat right now.

Edited January 12, 2023 by SandyBill

[joshuaho96]

3 hours ago, SandyBill said:

Thanks heaps for the reply Josh

It would have been nice if the consult-3 could talk to older Nissan's with some sort of adaptor..

I'll just have to see if I can do the old jump on the brake pedal to cycle the solenoids or reverse bleed the system but I'm worried reverse bleeding will just fill the master with air instead haha.

Thanks man I'll keep it in mind about jumping pin 5 if all else fails! Kudos

There used to be a PC program you could download called conzult that covered all models in the consult scan tools and gave you entire access of all onboard computers just like having the real unit but they ended up settling it's use for the 300zx only, due to not enough sales. I'd pay $300 for that in a heartbeat right now.

Reverse bleeding probably won't work as well as one would hope, you need absolutely zero air around the threads of the bleeder and at the entrance into the bleed nipple as well or else you're going to be pumping air bubbles through the lines. I don't know if the ABS module needs to have the solenoids activated as well, I figure if the older R32 could just be bled passively you probably can just use the motor + pressure in the master cylinder to flush bubbles out with sufficient flow velocity. Really is a shame more cars don't have something like the Toyota Prius' invalid mode which triggers the ABS pump for you when you press the brake pedal for thorough bleeding without a scan tool. ABS pumps also flow a ton of fluid compared to just simple pressure at the master cylinder.

Also, if you really want to pay for a scan tool supposedly the Launch X431 scan tool supports the Skylines if you get the 14 pin OBD1 adapter, I would try it myself but my car is hundreds of miles away from me at the moment:

[Dose Pipe Sutututu]

I've always gone and slammed the brakes and pull up the handbrake a little to upset the ABS computer causing the ABS motor to turn on.

Get it to run a couple of times and re-bleed. You should be good after that.