AaronB
03-01-2002, 05:14 PM
These were written by Joel aka Jewbaru on the i-Club.
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Ok, these are for the first gen J&S. The instructions you get are crap, so I decided to type this out to help out. These will work on the MY00, and they appear to be the same for the MY99.
Included in the box should be
J&S unit in a purple "Crown Royale" bag
Wiring harness with 8 wires coming from it.
2 "weather pack" connectors (trash)
Knock sensor w/ Metric adapter and wire plug
1 large diameter length of split wire loom
1 small diameter length of split wire loom
a few male butt connectors
wire ties
First, test mount the Unit. I put mine in the glove box, you can put it anywhere, it has more than enough length of wire. Once you get in place, run the BLUE wire from the harness to the drivers side of the car. Just above the clutch (or where the clutch would be) pedal is a rubber grommet. You can reach under the master cylender from inside the engine bay, and push it out. Punch a hole in it (a SMALL hole) and push the blue wire thru it. Make sure it's through enough so you can grab it from under the hood.
Push the grommet back into place and from under the hood, pull the wire thru. Pull it so there's not much slack in the car, but enough to play with encase you move the J&S around (I left about 12-14" of slack, and tied it taught under the dash).
Next test mount the knock sensor. There are a few places to bolt it using existing bolts, however, I found a spot with a proper hole, and it's still part of the block. On the passenger side, right before the block connects to the tranny, you can see a threaded hole. The sensor will screw right in. (see pic below) Once it's in place, plug the knock sensor's wire plug (it has an adapter on the wire) onto the top of it. Run the blue wire from the grommet under the TB and down to the knock sensor. (Don't zip tie it in place yet!) Trim the wire down to get rid of the excess slack, and remove the plug off of the knock sensor. I didn't use the connecters he supplied, I soldered the wires together, and I recommend you do the same. If you don't know how to solder, get some one who does, but be sure to use the proper solder type (rosin core I belive). You can get it at any Radio Shack.
Once their soldered and covered, go ahead and torque the adapter and knock sensor down. Do NOT overtorque the adapter or sensor!!! It doesn't have to be too tight, 15 ft-lbs for the adapter, and 12 for the sensor into the adapter. Plug the connecter back on the knock sensor, and cover the blue wire with the small diameter wire loom. I zip tied the loom to the adapter as well to make sure it didn't dangle and hit the turbo. Here's a pic of the finished look.
<IMG SRC=http://www.azscooby.com/images/scoobymods/sensor.jpg>
Once that's done, it's time to crawl into the car. First disconnect the battery.
Use the directions Here to get to the ECU. Don't worry about the wiring, just use it as a guide to which plugs are which, and to get the ECU uncovered.
The J&S has 8 wires, 7 of them connect to the ECU, the 8th is the knock sensor. To add to the confusion, there are two wires that are the same color. One is IGN Out from the unit, the other is for the TPS. They are marked on the unit itself. Once you find the TPS wire, just tuck it out of the way untill later.
With the ECU exposed, you'll need to cut wires from pins 25 and 26 from B134 plug (cut at least an inch from the plug, more if you can). Use the guide at the bottom to help. Remember, that is as if you were looking at the unit from the wire side. Strip off some insulation to expose the copper wire, and solder the wires as listed below. Be sure to cut the J&S wires to length, they are WAY too long, but leave a little slack. When I say coming from the plug, when you cut the wire you'll have some wire coming from the plug, and more wire going into the loom which eventually leads into the engine. Coming from the plug is exactly that, the wire that is connected to the plug, coming from the loom is the wire that is going into the loom.
The J&S GREEN wire gets soldered to the wire in the 25 position, coming from the plug.
The J&S BROWN wire gets soldered to the wire in the 26 position, coming from the plug.
The J&S YELLOW (NOT the TPS wire) gets soldered to the wire in the 26 position, going to the loom.
The J&S WHITE gets soldered to the wire in the 25 position, going to the loom.
Those weatherpak things are a pain, I threw them away, you won't need them. Be sure to cover the wires after you finish soldering them.
The next wires you don't have to cut, just expose some wire and solder the corresponding wires.
The J&S RED gets soldered to the wire in the 7 position on the B135 connector.
The J&S BLACK gets soldered to the wire in the 35 position on the B134 connector.
Once you get the wires all set, and covered, plug the plugs back into the ECU, and connect the battery. Start up the engine while watching the red LED on the back of the J&S. It will flash everytime it get's an ignition pulse (most of the time it looks like it's a steady light), if it doesn't flash, you did something wrong, and the car won't start. Check your connections. Once you get the car running, have someone rev the car to about 1500RPMs and hold it there. With a screwdriver, tap on the knock sensor adapter rapidly. You should hear the engine slow down.
If you don't check the knock sensor connections, if you do, you're all set.
Disconnect the battery again, and unplug the ECU. The last wire to connect is the TPS wire.
Trim some insulation off of the wire in the 17 position on the B136 connector. Solder the TPS wire to this wire. Cover it up, plug it in, and connect the battery.
Here's a diagram of the plugs. remember, this is if looking at the plugs from the WIRE side.
<IMG SRC=http://www.azscooby.com/images/scoobymods/J_S_pin.jpg>
Fire up the car and take it for a test drive. Set the knob on the back of the J&S for about half way (it has a little arrow). Jump on the highway, and at about 50mph in 5th gear, give it about 1/2 throttle. As you accellerate, turn the knob clockwise to increase sensitivity. You might be able to feel the car slow, if you have a Monitor, that'll help as well. Using the monitor, you want to set it just under the point where it starts to retard due to engine noise (about the 1:30-2 o'clock position).
Once you get it all set, use the large diameter loom to cover the J&S wires coming from the ECU, cover the ECU up, bolt every thing back in place, and clean up your work area. Enjoy!
-----------------------------------------------
Ok, these are for the first gen J&S. The instructions you get are crap, so I decided to type this out to help out. These will work on the MY00, and they appear to be the same for the MY99.
Included in the box should be
J&S unit in a purple "Crown Royale" bag
Wiring harness with 8 wires coming from it.
2 "weather pack" connectors (trash)
Knock sensor w/ Metric adapter and wire plug
1 large diameter length of split wire loom
1 small diameter length of split wire loom
a few male butt connectors
wire ties
First, test mount the Unit. I put mine in the glove box, you can put it anywhere, it has more than enough length of wire. Once you get in place, run the BLUE wire from the harness to the drivers side of the car. Just above the clutch (or where the clutch would be) pedal is a rubber grommet. You can reach under the master cylender from inside the engine bay, and push it out. Punch a hole in it (a SMALL hole) and push the blue wire thru it. Make sure it's through enough so you can grab it from under the hood.
Push the grommet back into place and from under the hood, pull the wire thru. Pull it so there's not much slack in the car, but enough to play with encase you move the J&S around (I left about 12-14" of slack, and tied it taught under the dash).
Next test mount the knock sensor. There are a few places to bolt it using existing bolts, however, I found a spot with a proper hole, and it's still part of the block. On the passenger side, right before the block connects to the tranny, you can see a threaded hole. The sensor will screw right in. (see pic below) Once it's in place, plug the knock sensor's wire plug (it has an adapter on the wire) onto the top of it. Run the blue wire from the grommet under the TB and down to the knock sensor. (Don't zip tie it in place yet!) Trim the wire down to get rid of the excess slack, and remove the plug off of the knock sensor. I didn't use the connecters he supplied, I soldered the wires together, and I recommend you do the same. If you don't know how to solder, get some one who does, but be sure to use the proper solder type (rosin core I belive). You can get it at any Radio Shack.
Once their soldered and covered, go ahead and torque the adapter and knock sensor down. Do NOT overtorque the adapter or sensor!!! It doesn't have to be too tight, 15 ft-lbs for the adapter, and 12 for the sensor into the adapter. Plug the connecter back on the knock sensor, and cover the blue wire with the small diameter wire loom. I zip tied the loom to the adapter as well to make sure it didn't dangle and hit the turbo. Here's a pic of the finished look.
<IMG SRC=http://www.azscooby.com/images/scoobymods/sensor.jpg>
Once that's done, it's time to crawl into the car. First disconnect the battery.
Use the directions Here to get to the ECU. Don't worry about the wiring, just use it as a guide to which plugs are which, and to get the ECU uncovered.
The J&S has 8 wires, 7 of them connect to the ECU, the 8th is the knock sensor. To add to the confusion, there are two wires that are the same color. One is IGN Out from the unit, the other is for the TPS. They are marked on the unit itself. Once you find the TPS wire, just tuck it out of the way untill later.
With the ECU exposed, you'll need to cut wires from pins 25 and 26 from B134 plug (cut at least an inch from the plug, more if you can). Use the guide at the bottom to help. Remember, that is as if you were looking at the unit from the wire side. Strip off some insulation to expose the copper wire, and solder the wires as listed below. Be sure to cut the J&S wires to length, they are WAY too long, but leave a little slack. When I say coming from the plug, when you cut the wire you'll have some wire coming from the plug, and more wire going into the loom which eventually leads into the engine. Coming from the plug is exactly that, the wire that is connected to the plug, coming from the loom is the wire that is going into the loom.
The J&S GREEN wire gets soldered to the wire in the 25 position, coming from the plug.
The J&S BROWN wire gets soldered to the wire in the 26 position, coming from the plug.
The J&S YELLOW (NOT the TPS wire) gets soldered to the wire in the 26 position, going to the loom.
The J&S WHITE gets soldered to the wire in the 25 position, going to the loom.
Those weatherpak things are a pain, I threw them away, you won't need them. Be sure to cover the wires after you finish soldering them.
The next wires you don't have to cut, just expose some wire and solder the corresponding wires.
The J&S RED gets soldered to the wire in the 7 position on the B135 connector.
The J&S BLACK gets soldered to the wire in the 35 position on the B134 connector.
Once you get the wires all set, and covered, plug the plugs back into the ECU, and connect the battery. Start up the engine while watching the red LED on the back of the J&S. It will flash everytime it get's an ignition pulse (most of the time it looks like it's a steady light), if it doesn't flash, you did something wrong, and the car won't start. Check your connections. Once you get the car running, have someone rev the car to about 1500RPMs and hold it there. With a screwdriver, tap on the knock sensor adapter rapidly. You should hear the engine slow down.
If you don't check the knock sensor connections, if you do, you're all set.
Disconnect the battery again, and unplug the ECU. The last wire to connect is the TPS wire.
Trim some insulation off of the wire in the 17 position on the B136 connector. Solder the TPS wire to this wire. Cover it up, plug it in, and connect the battery.
Here's a diagram of the plugs. remember, this is if looking at the plugs from the WIRE side.
<IMG SRC=http://www.azscooby.com/images/scoobymods/J_S_pin.jpg>
Fire up the car and take it for a test drive. Set the knob on the back of the J&S for about half way (it has a little arrow). Jump on the highway, and at about 50mph in 5th gear, give it about 1/2 throttle. As you accellerate, turn the knob clockwise to increase sensitivity. You might be able to feel the car slow, if you have a Monitor, that'll help as well. Using the monitor, you want to set it just under the point where it starts to retard due to engine noise (about the 1:30-2 o'clock position).
Once you get it all set, use the large diameter loom to cover the J&S wires coming from the ECU, cover the ECU up, bolt every thing back in place, and clean up your work area. Enjoy!