4
Part # TCI-9006
Revised 9/6/2016
Toll Free: 1.888.776.9824
www.tciauto.com
TCI
®
Automotive
151 Industrial Dr.
Ashland, MS 38603
Phone: 662.224.8972
Frequently Asked Questions About 376600
Q:
Will
this
kit
work
in
conjunction
with
my
OEM
computer
(ECM)?
A:
With the 376600 installed properly your ECM will no longer
interface with the transmission.
Do
not attempt
to plug the OEM wiring harness from your computer into the transmission with this kit
installed!
It is not compatible!
The ECM will continue to control the vital engine functions even
though it is no longer controlling your torque converter lockup.
Q: How do I know which wire is which on the new TCI
®
internal wiring harness?
A:
If you look closely at the sides of the black connector that is holding all three wires you will see the
letters A, B, C and D at each wire location. These correspond to the wiring diagrams shown in the
376600 instruction sheet.
Q: I want to install this on a 1993 700-R4 but the connectors don’t match. What can I do?
A:
This kit can work on a 1993 700-R4 with some additional ingenuity. Using a paper clip or similar
piece of wire, the individual wires can be removed from the plastic connectors by depressing the lock
tabs on the crimped terminal inside the connector. Transfer the wires from the TCI
®
wiring harness to
your 5 terminal connectors. As long as you transfer the wires from TCI
®
location A to your location A,
etc. there will be no problems. Also, note that if your wire A runs directly from the case connector to
the solenoid positive terminal without first going through a pressure switch than it can simply be left in
place because that is how the 376600 is wired as well.
Q:
What do I do with the other pressure switches that are on my valve body?
A:
The simple thing to do is just leave them in place even though they are not hooked up. They cannot
be removed unless you replace them with 1/8" pipe thread plugs.
Q: What do I do with the extra green wire on the external wiring harness?
A:
As mentioned in
Step
5
the green wire is a supplemental ground for the electric circuit and it is
strictly optional. By routing this through a dash mounted toggle switch you can override the fourth
clutch pressure switch and the vacuum switch and force lockup in second, third or fourth gears
manually. One example would be if you were towing in drive (third) and would like to utilize the
torque converter clutch.
Remember
that this is on the ground side of the circuit. Putting 12 volts on
this wire may short out your solenoid.
Q:
If I have a one-wire solenoid, why can’t I use it?
A:
The TCI
®
wiring setup does all of the switching on the ground side of the circuit. A one wire
solenoid is self-grounded and therefore not able to be wired into the TCI
®
376600.
Q:
How do I know if my solenoid is good?
A:
The first step in determining if your solenoid is serviceable is to test the electric coil. You will need
a simple test meter that can check resistance. Resistance is measured in Ohms and uses the following
symbol:
. This is important to check because some of the most frequent problems arise from the use
of a solenoid that is electrically shorted out internally. A good solenoid will measure between 24.5
and 26.5
. If you get a reading outside this range then the solenoid should be replaced. If the solenoid
