LED TVSV mod not working alkdfjaldfj, green red flash at boost. Options

[urbandork]

ok so after installing the LED knock light mod i have found that at any boost level my red and green led flicker on and off rather then just the green staying on. I assume this means i have knock in one cylinder and each time that cylinder fires my knock sensor picks it up and thus my green and red light blink on and off.

what could this be from? my oil does need to be changed. I guess i should look at the plugs right? compression test maybe????

i dont exactly know what i should start off with?

any advice?

i have a 255 wabrol pump, stock injectors and stock plugs and im running 91 octane.

please shed some light?

so i know its not knock now but something else. It seems to be wired correctly but still when im at boost the green led does not stay on. instead the red and green led flash.

and when my key is turned to acc. the green light is full brightness and the red is half.

for all you who have done the mod when the key is in the acc position what light is on?

i dont get why both are on the ecu and its tcp line must be crazy.


does it matter that i got my ground for the red led and power for the green led from the plug for the cig lighter????? perhaps maybe the current is to strong i dont knowalfhdlhfaldfhj



This post has been edited by urbandork: Jun 21, 2007 - 3:47 PM

[lagos]

can you link me to any 3rd gen wiring diagrams you were looking at? i dont have any on my pc for the 3rd gen motor.

i did have one really hard to read pinout jpg. it showed tpc to be the 2nd pin from the top, top row going from left to right. i think MAYBE you got the wrong wire... you might have taped into one of the wires that goes to your injectors (no wonder they are pulsating/blinking).
but again, i dont have a real diagram to look at to know for sure.

This post has been edited by lagos: Jun 22, 2007 - 12:25 AM

[urbandork]

can you link me to any 3rd gen wiring diagrams you were looking at? i dont have any on my pc for the 3rd gen motor.

i did have one really hard to read pinout jpg. it showed tpc to be the 2nd pin from the top, top row going from left to right. i think MAYBE you got the wrong wire... you might have taped into one of the wires that goes to your injectors (no wonder they are pulsating/blinking).
but again, i dont have a real diagram to look at to know for sure.

im using the EWD from the st205 repair manuel. I know its not the injector wire cus while those are on the same plug E10 C the wires are c24 injector 4 black yellow wire, c25 injector 3 black red wire, c11 injector 2 black white wire, c12 injector one black blue wire

the EDW clearly says the TPC is wire 2 on plug e10C/big plug and that its a blue red wire.

where exactly is the TVSV unit you speak of? and does it have a plug?? what does it look like? where on the block is it?

thanks for all the help?

do u know of anyone with this mod on a 3rd gen? would you be able to ask on celica tech cus i still cant post there.

damn i forgot lol .......... i dont remember where i DLed the repair manual for the st205 but i have it saved so if u want it let me know i can email it to you.

This post has been edited by urbandork: Jun 22, 2007 - 1:03 AM

[BloodyStupidDave...]

im using the EWD from the st205 repair manuel. I know its not the injector wire cus while those are on the same plug E10 C the wires are c24 injector 4 black yellow wire, c25 injector 3 black red wire, c11 injector 2 black white wire, c12 injector one black blue wire

the EDW clearly says the TPC is wire 2 on plug e10C/big plug and that its a blue red wire.

I am not sure this is right. You are trying to monitor the knock sensor, right? TPC is the turbo pressure (boost) meter output from the ECU. This is a mark-space signal intended to drive analogue or digital dials/gauges. The ratio of mark (+12v) to space (0v) indicates the level. Which explains what you are seeing with the red and blue LEDs.

I am not familiar with this mod, but if you want to monitor the knock sensor, it is on pin A13 and is a white wire. If you want to tap into this, it is important that you use shielded (coax) wire to do so.

[phattyduck]

I am not sure this is right. You are trying to monitor the knock sensor, right? TPC is the turbo pressure (boost) meter output from the ECU. This is a mark-space signal intended to drive analogue or digital dials/gauges. The ratio of mark (+12v) to space (0v) indicates the level. Which explains what you are seeing with the red and blue LEDs.

I am not familiar with this mod, but if you want to monitor the knock sensor, it is on pin A13 and is a white wire. If you want to tap into this, it is important that you use shielded (coax) wire to do so.

That's not quite what this mod is doing. He is monitoring the Turbo Pressure VSV output from the ECU to see if the ECU is 'happy' - meaning no knock, appropriate temps and no check engine lights. The signal doesn't switch quickly and should be constantly red, or switching from red to green on boost transitions. This part of the ECU control is the same (or very very similar) to the gen2 motor/ecu.

-Charlie

[urbandork]

I am not sure this is right. You are trying to monitor the knock sensor, right? TPC is the turbo pressure (boost) meter output from the ECU. This is a mark-space signal intended to drive analogue or digital dials/gauges. The ratio of mark (+12v) to space (0v) indicates the level. Which explains what you are seeing with the red and blue LEDs.

I am not familiar with this mod, but if you want to monitor the knock sensor, it is on pin A13 and is a white wire. If you want to tap into this, it is important that you use shielded (coax) wire to do so.

That's not quite what this mod is doing. He is monitoring the Turbo Pressure VSV output from the ECU to see if the ECU is 'happy' - meaning no knock, appropriate temps and no check engine lights. The signal doesn't switch quickly and should be constantly red, or switching from red to green on boost transitions. This part of the ECU control is the same (or very very similar) to the gen2 motor/ecu.

-Charlie

EXACTLYYYYYYYYYY...... so why isnt the signal wire being constant???? and instead fluctuating between ground and power.

Like i said. i know its not the way i have the LED's wired because even when i have only ONE wired up it still blinks.

[phattyduck]

EXACTLYYYYYYYYYY...... so why isnt the signal wire being constant???? and instead fluctuating between ground and power.

Like i said. i know its not the way i have the LED's wired because even when i have only ONE wired up it still blinks.

The only thing left to check at this point is power and ground for your LEDs. Where did you hook those up. Also, do you have a boost gauge hooked up? Does the motor boost up to 12-14psi or 8-10psi? And make sure the Turbo VSV is hooked up. It is hiddend behind/below the intake manifold and is easy to miss - but I think that would cause a CEL.

If all else fails, I can help you out in person again. I have a few other ideas about what to check, but they are hard to explain online...

-Charlie

[urbandork]

EXACTLYYYYYYYYYY...... so why isnt the signal wire being constant???? and instead fluctuating between ground and power.

Like i said. i know its not the way i have the LED's wired because even when i have only ONE wired up it still blinks.

The only thing left to check at this point is power and ground for your LEDs. Where did you hook those up. Also, do you have a boost gauge hooked up? Does the motor boost up to 12-14psi or 8-10psi? And make sure the Turbo VSV is hooked up. It is hiddend behind/below the intake manifold and is easy to miss - but I think that would cause a CEL.

If all else fails, I can help you out in person again. I have a few other ideas about what to check, but they are hard to explain online...

-Charlie

Im using the plug for the CIG lighter for my ground and power for the LED's

when i pulled the level sensor and got a CEL it put the car in safe mode and the red LED stayed on. My boost gauge confirmed this by reporting back 8-10 psi like it should

when i put the plug back in and i again was able to run 12-14psi like i should when everything was normal. BUT the LED's still flashed back and forth as if the TPC line was changing poles back and forth.

im giong to look for the tvsv but im pretty sure its hooked up other wise when i took off the level sensor wire and got a cel i wouldnt have toped my boost at 8-10psi rite?