GVR-4 NLTS ECMLink no lift shift clutch switch clutch cut wire

[Elpizer2]

Ok so my ECU is a 91+ EPROM ECMLink

This is my problem, I marked enable no lift shift on ECMLink. I installed a switch in the clutch that sends ground once the clutch pedal is press down and no ground once release pedal.

I try to datalog the clutchSW but it stays "1". 0 won't come once press, only 1 forever. I tried inverting the signal. Mark use starter switch to invert clutch switch signal on ECMLink. But when I do this. ClutchSW stays on "0".

Any ideas? I really want to use NLS and antilag

 

[steve]

Time to get out the multimeter and measure.

First thing is disconnect the switch and see what voltage in on the wire from the ECU.
Second it to measure the resistance of the switch to ground when the switch is open and when it's closed.

If you don't have a voltage on the wire from the ECU you won't be able to signal. So the ECU could be damaged, the wire broken, or you have the wrong pin.

If the switch doesn't switch, it always going to report the same state.

Last, assuming you have the pull-up voltage from the ECU and the switch changes state, measure the voltage on the ECU side with the switch connected in both states, open and closed. If that works (the voltage goes high with the switch open and low with the switch closed) it going to be an issue inside the ECU or in ECMLink.

 

[Elpizer2]

Time to get out the multimeter and measure.

First thing is disconnect the switch and see what voltage in on the wire from the ECU.
Second it to measure the resistance of the switch to ground when the switch is open and when it's closed.

If you don't have a voltage on the wire from the ECU you won't be able to signal. So the ECU could be damaged, the wire broken, or you have the wrong pin.

If the switch doesn't switch, it always going to report the same state.

Last, assuming you have the pull-up voltage from the ECU and the switch changes state, measure the voltage on the ECU side with the switch connected in both states, open and closed. If that works (the voltage goes high with the switch open and low with the switch closed) it going to be an issue inside the ECU or in ECMLink.

wait, i'm confused about the voltage.

So, key on, the pin 104 should have a voltage?

I'll measure the resistence ohms on the clutch switch installed. it sends ground to pin 104

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[Elpizer2]

The clutch start switch, when you press to start the car, to what pin input ECU goes?

 

[Elpizer2]

The clutch start switch, when you press to start the car, to what pin input ECU goes?

Ok it apprently it fixes itself.

I added A/T switch & Clutch switch to datalog and when I press I see 0, relase sees 1.

I notice the voltage that you mention on release position key on using the logic test light.

So, I'll recheck the ground and try to get a better ground to avoid problems. I'm trying to understand how antilag works and all of this