5.1.2 Open Calibration File ....ration File ....tion File As .
5.1.5 Cut ..
22.214.171.124 Load vs Line Load vs Accumulator % 126.96.36.199 Part Throttle Upshift/Downshift Upshift Downshift TCC Lock/Unlock TCC Locku 188.8.131.52 TCC Pressure Temp vs Line Pressure WOT Schedule 5.4.1 Sensor Cttle Position ....184.108.40.206 Manifold Engine Vehicle 5.4.2 Breakpoints and Configuration .5.5 Datalog t Logging ..5.5.2 View .5.6.1 Go Go Retrieve Calibration from Send Calibration to Flash Select Port
220.127.116.11 Flash Upgrade Com Port Auto Retrieve on Continuously Scan for When Software 5.7 Software Setup ...5.7.1 Monitor Toolbar Unit Explorer Close All Press F1 in any Window for More Check for Part One - Installation Instruction Contents Please check your new transmission control system contents.You should have received the following items:
Transmission Control Unit (TCU)
Complete wiring harness with labeled connectors
T-Com WP software
5-ft communications cable for TCU to laptop This GM Transmission Control Unit (TCU) system is designed to be used with the following transmissions: GM 4L60E/4L65E/4L70E and GM 4L80E/4L85E.
These transmissions are fully electronic and will not shift automatically without a transmission control system connected to it.GMs TCU, computer software and wiring harness enable the transmission to operate.The TCU is fully programmable; part throttle, Wide Open Throttle (WOT), shift firmness and speeds can be custom tailored to the application.The torque converter lock-up is also fully adjustable.
All of the wiring harness wires are clearly labeled.
You can refer to the wiring diagrams for more detail, but you should find that the system is set up as a 'plug-and-play' application.2.0 Wiring Harness Guidelines The TCU itself is weatherproof so mounting it in the engine compartment is acceptable.
Although there should be ample lengths of wire, it's best to lay out all the connections first to be sure everything reaches before permanently mounting the TCU.The TCU requires an active power and ground connection to operate correctly.
The power connection to the TCU should be switched (only turns on when you turn the ignition key to the start/run position).
If you wire the TCU to a constant power source, you risk severe damage to the TCU and your transmission.
The power source should be protected with a 10amp fuse (this can vary based on the transmission application).
Your switched power source should also be capable of providing at least 10 amps (or more depending on your transmission application) and should come from a clean terminal or wire.
If you splice into a wire or create a switched power junction, please protect and seal the wire or joint with sealant type heat shrink or something similar to ensure reliability.
Your ground connection should be wired to a clean ground terminal on the vehicle (preferably on the transmission or engine).GM Wiring Notes The supplied wiring harness has been designed to interface with the 4L60E/4L65E/4L70E/4L80E/4L85E transmission and all required sensors without any cutting/splicing required.
Standard GM connectors have been utilized during harness construction to ensure compatibility with the most common sensors.
Note: Pre-1993 4L80E transmissions will need to have an updated internal harness/connector installed to be compatible with the TCU harness.Use either GM #24200161 harness or aftermarket equivalent.Every connector is labeled for ease of installation.
Should the label become removed/lost, this section serves as a reference to identify the various connector faces on the harness.Note: Each connector has the terminal labels molded directly onto the connector body, i.e.
A, B, C, etc.
The picture on the left is the vehicle speed sensor.
The one on the right is the case connector.2.1.1 GM Harness Connectors EA BC D L M N P R S T C1Transmission Case Connector Location: 4L60E/4L65E - Passenger side of case.(top) 4L80E/4L85E - Driver side of case
.(side) CAVITY FUNCTION WIRE COLOR SHIFT SOLENOID A (LOW) LIGHT GREEN SHIFT SOLENOID B (LOW) PRESSURE CONTROL SOLENOID (HIGH) ORANGE D PRESSURE CONTROL SOLENOID (LOW) LIGHT BLUE BOTH SHIFT SOLENOIDS, TCC SOLENOID AND 3-2 CONTROL SOLENOID (HIGH) (HIGH) DARK GREEN (LOW) PURPLE GRAY P RANGE SIGNAL C RED R RANGE SIGNAL B DARK BLUE 3-2 CONTROL SOLENOID (LOW)
NOT WHITE T TCC SOLENOID (LOW) BLACK TCC PWM SOLENOID (LOW) 4L80E/4L85E
CAVITY FUNCTION WIRE COLOR 1-2 SHIFT SOLENOID A (LOW) LIGHT GREEN 2-3 SHIFT SOLENOID B (LOW) FORCE MOTOR (+) ORANGE FORCE MOTOR (-) LIGHT BLUE 12 VOLTS +, IGNITION ON (HIGH) DARK GREEN (LOW) PURPLE GRAY P RED R SWC DARK BLUE WHITE VOID - NOT USED C Red A - Black
B - White C2Throttl
Gen3 transmission manual
Bigstuff3 GEN3 Transmission Control Manual Table of Contents
Thank you for purchasing BigStuff3s GEN3 PRO SEFI Powertrain Control system with integral Transmission Control!
BigStuff3s GEN3 ECU is the only aftermarket engine management system to integrate transmission control into a single ECU!
BigStuff3 is currently offering transmission control for GMs 4L60E/80E transmissions.The first true GM electronic transmission was the 4L80E, introduced in 1991.
The 4L60E followed the 4L80E in 1993.Computer-controlled transmissions have changed automatics forever.
Just as fuel injection has made the engine more powerful, functional, and reliable, the electronic transmission outperforms and outlasts any of its GEN3 Transmission Control Manual Harness Label Wire Color / Connector Type Label Definition Connect To Further Details Transmission Valve Body Fuse N/A N/A N/A Valve_Body_Fuse 20 Pin Transmission Header Connecter
Connect the harness side 20-Pin connector to the stock 20-Pin header connector on the transmission.
The location on the transmission where this termination should be made can be seen by clicking on and Output Shaft Sensors
The Trans Input (shaft) Speed Sensor (TISS) and Trans Output (shaft) Speed Sensor (TOSS) measure the input and output speeds of the transmission so the GEN3 ECU can determine when to lock the converter, how much slip to allow with an unlocked converter, the vehicle load, the shift pressure, and the vehicle speed.
The TISS and TOSS sensor connectors are identical in shape and color.
It is important to make sure these connections are made to the correct speed sensor on the transmission.
Terminating these connectors to the wrong transmission sensor will effect transmission operation and could damage the ECU, thus voiding the warranty.TISS Sensor
Terminate this connector to the stock (TISS) speed sensor on the 4L80E 4L60E transmission does not have a TISS sensor!
The location on the transmission where this termination should be made can be seen by clicking on GEN3 Transmission Control Manual TOSS Sensor
Terminate this connector to the stock speed (TOSS) sensor on the transmission.
The location on the transmission where this termination should be made can be seen by clicking on > 12V Switched (Single pink wire)
A secure connection must be made to a switched 12V supply.
The best and in most cases the only source of a switched 12V supply is at the vehicle fuse block.
The ECU must have a live 12V supply during cranking.
If the 12V supply does not stay live, during cranking, the ECU will not function.A
simple way to determine if a live 12V supply exists during cranking is to check it with an inexpensive voltmeter.
Securely fasten the voltmeters red (+ positive) wire to the ignition input on the fuse block.
Secure the voltmeters black wire (- negative) to a ground location on the fuse block or another adequate location.
Once the voltmeter connections are made, crank the engine.
The voltage meter should indicate an output voltage of between 8V to 14 volts.
If the output voltage is below 8 volts, check to make sure the battery is fully charged and all the cells of the battery are functioning properly.
Note: If a battery with both 12V and 16V cells is being used, the switched ignition (Vsw) must
to tied to the same voltage rail as the main battery connections are connected to.
Do not connect the ECU main cables to the 16V rail and have Vsw connected to +12V.
This will damage the ECU and void the Wire Harness Main Connector
The 30-way harness side main connector mates with the GEN3 ECU header connector marked with connector will only fit in one direction, but must be mated with the ECU header connector marked is essential that the transmission wire harness main connector be installed in the correct header connector location on the ECU!
Installing the transmission harness main connector to the incorrect header location on the GEN3 ECU will damage the ECU and void the warranty!! 7
Bigstuff3 GEN3 Transmission Control Manual When the ECU is powered and the wheels are moving, an ellipse will appear in the active window representing the current vehicle speed and throttle position.
When the ellipse moves above the green line, the transmission will up-shift to the next gear, when the ellipse moves below the red line the transmission will down-shift to the next gear.
The window at the bottom of the table above represents first gear.
The first gear window contains only a green line, since the transmission cannot shift below first gear.
Similarly, the window at the top pf the table represents 4 gear (a fifth window would be present if a five (5) speed transmission were being used).
The fourth gear window contains only a red line, since the transmission cannot shift above fourth gear.
Changing Up/Down Shift Points Using the Computer Mouse and Arrow Keys
Using the Mouse
To change shift point values, place the mouse arrow on the box along any green or red line, depress and hold the left mouse button, and move the box up or down.Once the left mouse button is released the new shift point (MPH) will be displayed in yellow numbers.