View Full Version : Need to know...TVSV wiring

12-08-2006, 06:41 PM
Anyone have the wiring diagram for the TVSV? That is, the 2 wires that come from it, where do they go and what is the connection between them and the TSC pin on the ecu.

I tried the LED knock detection circuit on my car but for some reason it was not working...upon checking the TSC wire, I'm not getting a sufficient voltage change. I decided to check the TVSV wiring on the engine (pita as its at the firewall side) and when I put my hand on the wiring.....voila, the wires are loose/stripped. I'm guessing that the guy who wired the car for me had no idea where they go to on the harness, and neither do I.

I want to get this wired and as I already have the led's installed, get them working. Can anyone help? Thanks much.

12-08-2006, 06:54 PM
One wire (blue-red) goes to the TPC pin on the ECU.
Another (black-yellow) goes to +B pin on the ecu.
You can hot wire this one to any black-yellow wire.
(+B on the diagnostic port, ISC valve, TVIS vsv, EGR vsv, O2 sensor, EFI main relay, circuit opening relay)

12-20-2006, 10:59 PM
Oh great! Thanks Gary! BTW, which goes to which? Does it matter?