Fitting a Basic Turbo Timer
Article kindly supplied by Graham Sims
Please note this article relates to the KZN130 Surf (3.0 Turbo Diesel).
To extend the life of your turbo the 1KZ-TE engine manual recommends idling the engine for between 20 seconds and 2 minutes, depending on how hard the engine has been driven. Rather than sitting in my wagon looking like a fool I decided I'd put a turbo timer in to take take care of this.
I picked up a 2nd hand turbo timer from a local vehicle dismantler. The unit is an old Greddy one, and is very basic. All it does is run the engine for between 1 and 5 minutes after you take the key from the ignition. You get what you pay for, and I only paid $20 NZ (which is peanuts). However, this unit is pretty much all I require.
The unit has four wires; red, black, green and white.
It was a pretty safe bet that the Red was +12V constant and the Black
earth. That left the green and blue. Connecting it to a battery showed
the Green to be the Ignition on, and the Blue to be Accesory. Armed with
knowledge I was ready to do the install.