Thermo fan causing data error

[battwell]

Hi

I have a FJ40 Landcruiser with a 3.8L Ecotec V6 from a VS Commodore in it.

I Have been plying around with TunerPro RT doing some logging and was able to diagnose a few problems on the engine, such as O2 Sensor bad ground.

The only problem i am having is when the temperature reaches 80 Degrees and the thermo fan kicks in, Tuner Pro keeps giving me DA Data Errors. I initially thought it was the thermo fan current was causing voltage drop at the ecu. I took the fan relay out and it still has the same problem when the pcm fan output is energised. At the same time i get DTC 92 Low speed fan fault. Im guessing this is because its a conversion and it only has one large 16 inch thermo fan and no low speed fan.

Could this DTC 92 be causing the DA Data Errors?

[Holden202T]

the fan is normally controlled by the BCM and the ECM sends messages to the BCM to turn it on/off etc and these will be the data your seeing.

unfortunately I don't know if there is much you can do about it.

[charlay86]

The frame header that tunerpro is listening for must not be properly defined in the adx. Either that Or chatter is not being disabled properly

[The1]

if your not using a BCM then set your low fan to max temp in/out and just use high fan for normal operation to turn your single fan on/off, as the BCM usually controls the low fan.

[battwell]

if your not using a BCM then set your low fan to max temp in/out and just use high fan for normal operation to turn your single fan on/off, as the BCM usually controls the low fan.

Yeah i might give that a go. still new to this, only just worked out how to datalog using tuner pro