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TPS voltage ?
Posted: Tue Apr 08, 2008 1:27 am
by Mads B (dk)
Hi
What TPS voltage do you get when you floor it.... ?
i only get 3.84V isnt 5V the correct voltage ?
Regards Mads
sorry for the bad english
Posted: Tue Apr 08, 2008 1:34 am
by Hendrick301
i get around the same voltage...
although i beleve it is incorrect. Ive been suspecting the tps sensor since last week.
Posted: Tue Apr 08, 2008 7:53 am
by Mads B (dk)
Hendrick301 <--- maybe ist normal on this engines ?
forgot the mention the its a Ca18det engine
Posted: Tue Apr 08, 2008 1:54 pm
by Matt
I can double check if CA18 should be correct.
Z31 doesnt have a variable TPS input (only switch). Shouldn't report voltage. If it does for Z31 then I can make NIStune ignore it
Posted: Tue Apr 08, 2008 2:03 pm
by Hendrick301
Matt wrote:I can double check if CA18 should be correct.
Z31 doesnt have a variable TPS input (only switch). Shouldn't report voltage. If it does for Z31 then I can make NIStune ignore it
ok, cool. how can i make it ignore it? it does read a voltage although its off at times. at idle it says "TPS ON" and goes off when you hit the gas
Posted: Tue Apr 08, 2008 2:55 pm
by Matt
I'll put a fix in the next software build to ignore R31/Z31 TPS voltage parameter reported
The firmware has a consult table which must have a TPS entry in there by accident
Posted: Tue Apr 08, 2008 3:30 pm
by datsunboy
so for the CA18.....what should the voltage be at fully closed, and fully open positions?
Im getting 0.3volts at fully closed (but im running a SR20 TPS.....so may be wrong????)
Posted: Wed Apr 09, 2008 2:51 pm
by Matt
sounds like it might be wrong
streetbike did a log only last week with the CA18 ECU and has valid (upto 4.12 volts) TPS readings
viewtopic.php?t=306&start=30
I get about upto 2.5 volts on my bench with CA18 before my input voltage maxes out
Posted: Thu Apr 10, 2008 1:12 am
by Mads B (dk)
datsunboy <---
i get 0.44v closed on my ca18det with standard TPS
Posted: Thu Apr 10, 2008 3:56 am
by jey_253
I played with my tps sensor and noticed the the min/max voltage depends on how the sensor is manually adjusted. .44 was the lowest i remember
Posted: Thu Apr 10, 2008 7:49 am
by datsunboy
ok.
looking throught that last guys log file.....he was getting 0.4 most of the time....and 0.38 occasionally
Posted: Thu Apr 10, 2008 11:34 am
by Matt
yeah that must be the minimum his ECU is reading in from TPS
0.4
0.4
0.38
0.4
0.4
0.4
0.4
0.4
0.4
0.4
0.4
0.42
0.66
0.72
Maximum values about 4.12
1.1
1.14
1.2
1.28
1.34
1.38
1.4
1.44
1.5
1.6
1.82
1.98
2.26
2.52
3.04
3.4
3.86
4.12
4.12
4.12
4.12