Need FTPS wiring Diagram for 2006 Chevy Optra 5 ,2.0L (Canada) / Suzuki Reno (USA)

Question

Been trying to figure out DTC p0454 & p0452 on a 2006 Chevrolet Optra 5 hatchback (2.0L). GM diagnostics routine had me replace replace the FTPS and the problem still persists after clearing DTC's.

Have not been able to find a wiring diagram for the FTPS sensor circuit and the pinout at the ECM.

I have a service manual but it doesn't show the diagram for this circuit.
Some diagrams i have seen show the fuel tank circuit ground and the ftps ground connected but i have my doubts.

I am stumped !!!
If anyone can provide a wiring diagram i would be most grateful.
There is either high pressure (positive) in the tank causing the voltage low or there is a wiring problem. I have seen one post where the fuel sender unit was the problem with a blockage in the valve at top of unit. Have blown air threw all areas of the evap so i am leaning toward the wiring.

Thus a wiring diagram is what I need but as i said the WWW doesn't have one.
I am hesitant to purchase another service manual as the 1st one didn't have one.

If anyone has found a diagram please post !

PS> Note : both the purge and vent valves are tested OK and there are no leaks in the evap system as well as a new gas cap has been installed.
Note2: Wiring for FTPS colors are black(ground), dk green(signal), gray (5vref)

Answer 1

Be careful when it comes to the black wire as being a ground it is a low reference

Comments

Cant read this diagram - too blurry,,,,,,,,i know that the grey(5vref) and green (signal) goto C108. But not sure if this diagram is even correct for a 2006 Chevy Optra/ Suzuki Forenza/Reno

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This s the one for the Opel hatchback/ Suzuki Forenzo / Reno. unless its emailed directly, By the way don't suspect the problem as being with the FTP, the EVAP hose at the canister they tend to be the problem make sure the hose there are connected correctly