Purpose:
VFAQ for wiring a Zeitronix ZT-2 Wideband Controller to a 2G DSM (plus AEM boost sensor wiring and DSMLink wideband logging input wiring).

Disclaimer: You do these modifications at your own risk!

Reference Material:
http://www.vfaq.com/mods/ecu-harness-2G.html

Resources:
Good light source
Good soldering iron + solder + ability to solder
Electrical Tape
Shrink Wrap (for AEM boost sensor wiring)

Steps:
1. Remove your center console kick panels on both sides. This requires removing a couple screws and some pop panels. Figure it out. Take it easy.

2. Now, either remove your ECU entirely (three 10mm bolts, feel around for them; two accessible from the driver's side, one from the passenger side) OR just unplug the connectors from the ECU (a little annoying). Either way you are trying to get the wire harness more easily accessible to your soldering iron.

3. Leave your ZT-2 harness unplugged and locate the thick black and red wires. There is only one set.

4. On the widest connector locate pins 12 and 26. If the top of the ECU (facing the firewall when mounted) were horizontal and you were looking at the side of the connectors with the wires sticking out, this is 2nd from top right for pin 12 and bottom right for pin 26.

5. Strip the wire jacket from a small section (~5mm) of each wire coming out of pins 12 and 26 about an inch and a half away from the ECU connector. Remove tape from the wire bundle as necessary. Strip a slightly longer section off of the end of the thick black/red wires on the ZT-2 harness.

6. Take the thick red wire from the ZT-2 and wrap it around the exposed red wire (+12v power) coming off of pin 12. Add solder until it looks electrically sound. Once it's cooled a bit, wrap your newly tapped connection in electrical tape.

7. Repeat step 6 as follows with the corresponding wires:
* ZT-2 thick black wire to pin 26 (Ground, black wire, bottom right of wide conn.)
* ZT-2 green wire to pin 58 (Engine ignition signal, white wire with silver dots, 2nd from bottom left on small conn.)
* ZT-2 gray wire to pin 84 (Throttle position sensor, brown wire with silver dots, 3rd from bottom left on right-most conn.)



8. Re-mount your ECU connectors and/or ECU and kick panels. Enjoy your newfound Zeitronix ZT-2 Wideband!


From here these are instructions for the Kavlico (AEM 3.5 bar) boost sensor wiring to the ZT-2 harness.

1. Strip ~5mm of plastic jacket from the three wires coming off the boost sensor and the brown, light brown, and yellow wires from the ZT-2 harness. Here are the corresponding wires:
Kavlico black wire to the ZT-2's brown wire
Kavlico green wire to the ZT-2's light brown wire
Kavlico red wire to the ZT-2's yellow wire

2. Slide a section of shrink tube over the wires on the ZT-2 harness. Twist corresponding wires together (or alternately just slide them into each other) from the boost sensor/ZT-2 and solder. Heat up that shrink tube and cover all those new connections. Enjoy your medical-grade-accurate boost readings from the ZT-2!




From here these are instructions to wire the ZT-2's 5v wideband logging output to the MDP sensor input of your ECU (this is only useable if you have DSMLink so you can log this input).

0. Unplug your MDP sensor harness (only connector on TOP of your intake manifold). Tape up both ends of the harness connectors and zip tie them so they're out of the way/secure.

1. Solder the white wire on the ZT-2 wiring harness to the Manifold differential pressure (MDP) sensor wire. This wire corresponds to pin 73, or the wire third from the top left on the right-most ECU connector. The wire is light green in color with a black stripe.

2. Choose the correct Wideband input in DSMLink. Enjoy!


Author: Orlando Rojas
Last Updated: 8/2/2004
This document may be republished by anyone as long as it retains it's original form.

Special thanks to cRock (http://www.zeitronix.com/) for supporting SoCal DSM and making such great products for DSMers.

SoCal DSM