HI/LOW Boost wiring

[Frankieflowers]

Hi guys.

I am trying to figure out why my 4efte Glanza V Hi Low Boost solenoid isn’t working. The solenoid works, but the ECU isn’t putting the VSV1 signal to ground to engage the solenoid.
I am actually looking for the full manual in English because I have only a Russian version…
if you check the diagrams, you will see that VSV1 shares its signal with other ECU signals such as E+ (12V), DISC, FC (fuel cut), BATT and FB on the AC computer.
The purpose of my work was to put it back on its original setup so maybe someone could help me understand what is missing.
For instants as the engine is swapped into a E 11 Corolla the Starlet loom isn’t in besides the engine room that goes to the ECU. This explains why the engine oil pressure sensor isn’t connected to the loom. I want to know if this triggers the problem. about this missing connection I would like to know where the oil pressure wires go to reach the ECU.

I hope that someone can help. Thank you.

 

[Frankieflowers]

I was thinking about Hi Low boost the reason why the ECU doesn’t ground the solenoid. As we do not have a diagnostic to see the parameters. It might be that in the conditions where the whatever map sensor or temperature isn’t. In the nominal parameters, the ECU decides not to switch to.HI boost. I am just speculating, but I suppose that, as gaining boost in wrong conditions could create harm to the engine.
As the turbo installed on my engine is a hybrid ct9 with ct12 internals, the amount of pressure is approximately 20% higher compared to a stock ct9. This is why I think that’s probably the EC you doesn’t switch HI boost as the pressure is out of parameters. I must try changing the wastegate spring to a softer one to go back to nominal pressure behaviour even if the total pressure is the same (0.7 bar). The other thing to consider is that the solenoid on the Starlet works in a HI boost default position which means the solenoid is grounded and the air flows out. Then probably the internal actuator is set to 0.4 bat. I will do that test and if it won’t work, I will bypass the ECU and go straight from the switch ground to the solenoid. This was just an experiment for the pleasure to studying this amazing car. I don’t really need it to be in a stock set up as it is not a stock mechanical set up, and I am running a Piggyback with a map sensor clamp to avoid fuel cut. The test I have been done was of course, with a bypass
on the DET3.