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DIY HKS Turbo Timer Type 1 Install

Old 10-06-2009, 12:42 AM
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Default DIY HKS Turbo Timer Type 1 Install

This is a DIY for HKS TT type 1 install with a plug n play harness from Ptuning.

This Install was done on a 2008 Scion tC.

First of all, I am NOT responsible for what you or this aftermarket part does to your car. Unless you are completely comfortable with tearing things apart, DO NOT PROCEED.

* ALWAYS keep hardware (bolts, nuts, screws, anything) in a SAFE PLACE.

Tools you'll need:

- Screwdrivers, Phillips and Flathead.

- Socket wrench and socket set.

Step 1

Disconnect your battery.

Step 2

Remove two screws on the steering column cover, and pull off the bottom cover as shown in the picture highlighted in red.

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Step 3

Remove the fuse cover as shown in the picture below by pulling off.


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Step 4

Removing shift gate cover and the cover with the cup holders.

1. Begin by removing your shift ****. Remember, "Lefty loosey."

2. Remove the shift gate cover, there are four points which you will want to pry with a Flathead. I have marked the area with a red arrow in the picture below.

Before pulling the cover up and away there is a wire that is plugged into the cigarette lighter, go ahead and unplug the wire from the cigarette lighter before removing the cover away from the area.

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3. Remove the cup holder section, by doing the same procedure that you did with shift gate cover. The four points which you will need to pry, are in the similar location as the shift gate cover.

Step 5

Remove the ignition harness clip, from the ignition connector.

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Step 6

Mount your TT brain box, and TT controller panel in a location that you want it in. It is best to keep it in an area where your plug n play harness can reach ignition harness connector.

Make sure that you connect your TT controller panel to your TT brain box once you have mounted both items to it location. In the picture below is where I mounted my TT brain box and controller.

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Step 7

Connect your plug n play harness to your TT brain box, and run it to the ignition harness connector.

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Step 8

Connect your plug n play harness to the ignition harness clip, and connector as shown in the picture below.

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Step 9

Run your parking brake wire which is gray from your TT brain box to your E-Brake, and splice the wire into your E-Brake wire with a splice connector as shown in the picture below.

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Step 10

Take your ground wire which is black, and connect a ring terminal to the end of the wire.

Then unscrew the nut which is located in the fuse area, and run your ground wire to the stud which you pulled the nut off from.

Place the ring terminal on to the stud, and screw the nut back on to the stud as shown in the picture below.

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Step 11

Removing your glove box.

1. Open the glove box and push on both sides toward the middle of the box and pull towards you lightly to release the box. Shown in picture below.

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2. Rotate the glove box downward to gain access to the hinge. Squeeze the plastic hinge together and push away from the supporting rod. Shown in picture blow.

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3. Remove the glove box.

Step 12

Run both RPM signal lead wire, and your speed signal lead wire from your TT brain box to your ECU.

Step 13

1.connect your RPM signal lead wire which is brown to your ECU RPM signal wire which is black with a splice connector as shown in picture below.

2. Connect your speed signal lead wire which is blue to your ECU speed signal wire which is purple with a spice connector as shown in picture below.

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Step 14

Connect your battery.

Step 15

Start up your car, and check to see if your TT is running proper.

Step 16

Once everything is good to go, put back to gather your glove box, steering column cover, and your fuse cover.


Last edited by MR_LUV; 10-22-2017 at 05:36 AM.
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Old 10-06-2009, 12:45 AM
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Good diy
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Old 10-06-2009, 01:26 AM
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awesome DIY.....is the wiring the same for the 06 tc...cause i been lookin for the RPM signal wire
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Old 10-06-2009, 02:04 AM
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Originally Posted by my06tc View Post
awesome DIY.....is the wiring the same for the 06 tc...cause i been lookin for the RPM signal wire
thanks Im not sure, because they used a different ecu. you should check out dezod motor sports tech notes for scion tc 05-06 ecu pin-out, you may find what your looking for.
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Old 10-06-2009, 04:24 PM
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Nice DIY

The wiring for an RPM signal will be different for an 05-06 than an 07-09.

For wiring for both, go here:
http://www.dezod.com/tech_notes.cfm
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Old 10-06-2009, 05:26 PM
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diagram is kinda confusing to me can anyone pin point me the right wire or pin...really appercaited it......i did read its a black wire but different pin..guess i gotta look or study it harder
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Old 10-06-2009, 05:47 PM
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Originally Posted by my06tc View Post
diagram is kinda confusing to me can anyone pin point me the right wire or pin...really appercaited it......i did read its a black wire but different pin..guess i gotta look or study it harder
E4-5 on the diagram for an 05-06.

Thats going by what the OP wired into.
(Will not be the same for other items such as piggybacks)
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Old 10-06-2009, 08:04 PM
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o i see.....make sense....thankyou very much Go4shoped
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Old 10-06-2009, 08:39 PM
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what if you have a pnp harness for a piggy pack...where do u splice the rpm signal? on the piggy harness or the actual ecu harness
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Old 10-06-2009, 10:28 PM
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Originally Posted by chintastictc View Post
what if you have a pnp harness for a piggy pack...where do u splice the rpm signal? on the piggy harness or the actual ecu harness

If you have a plug n play harness for your fic the wires should still be in the same location but on the plug n play harness,or you can splice it into the car harness before it goes into your plug n play harness.
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Old 11-27-2009, 06:14 PM
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do you really have to disconnect the battery what would happen if you dont
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Old 11-27-2009, 08:14 PM
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Originally Posted by gp1817 View Post
do you really have to disconnect the battery what would happen if you dont

Its a safety precaution, so you don't miss something up or get shocked some how.
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Old 08-12-2011, 01:19 PM
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I installed mine in the '06, works OK.
Only problem is that it isn't reading the speed wire properly.
I followed the manual that came with the TT.
It runs about twice the speed it should be when compared to my speedometer.
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Old 03-03-2012, 11:05 PM
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Did the TT harness come with the kit when u purchased it? i keep looking for the hks TT and none of them seem to have the harness included in the package?
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Old 03-04-2012, 05:15 AM
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Ptuning sells the PNP harness ^^
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Old 03-04-2012, 07:32 PM
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Yes!!! Sweet! I found it... lifesaver right there ^^^ thanks
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Old 05-21-2012, 03:25 AM
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PTuning said they won't have this in stock for a month. Sucks, I just got my Turbo Timer yesterday.
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Old 10-22-2017, 05:42 AM
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Wonderful DIY w/pics.

I will make it a Sticky.

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