[Cotty]

Hi Guys!

I've got a problem with my R33 GTR 4wd system.
I was driving to work as normal yesterday and gave her a bit of a blip in the wet.
All 4 wheels spun followed by the 4wd and A-LSD lights coming on.
I've had a look at the Attesa unit in the boot and it's flashing code 75 (TPS signal fault).
I've checked the fuses - All OK.
The only job I've done was last weekend swapping the turbo's out for a pair of GT2860's.
The TPS signal reads OK on the engine ecu too.

Any help will be greatly appreciated!

Cheers
Pete

 

[Cotty]

Sorry Guys!
Just noticed a similar thread open already.
Mine isn't water related, I've opened the box up and it's clean and dry and the connections are in good condition.

 

[Cotty]

Found the Fault. Thanks to Mark's help (Abbey MS). The TPS signal that is retransmitted from the engine ECU on pin 56, had failed. This should track the voltage on pin 38 of the engine ECU (approx 0.35v at idle and around 3v at full throttle).
I'm just waiting for my replacement ECU now and then I'll be back in business.
Note: Don't be tempted to connect pin 38 to pin 56 to get it working. It will load the TPS signal causing errors in the ECU fueling (Info courtesy of Mark).

Thanks again for your help Mark!