C1
Transmission Case Connector
Location: 4L60E/4L65E - Passenger side of case. (top)
4L80E/4L85E - Driver side of case. (side)
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.
GM Wiring Notes
The supplied wiring harness has been designed to interface with the 4L60E/4L65E/4L80E/4L85E transmission and all required sensors without any cutting/splicing required. Certain instances, where noted, call for the use of a TCIŽ adapter harness to avoid splicing. 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 TCIŽ TCU harness. Use either GM #24200161 harness or aftermarket equivalent.
Ford Wiring Notes
The supplied wiring harness has been designed to interface with the AODE/4R70W/E4OD/4R100 transmission and all required sensors with a minimum of splicing. Due to the OE design of the Ford Throttle Position Sensor (TPS), this circuit will need to be spliced unless a GM style TPS such as the TCIŽ 377400 remote TPS system is utilized.
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.
|
C1 Transmission Case Connector Location: 4L60E/4L65E - Passenger side of case. (top) 4L80E/4L85E - Driver side of case. (side) |
| CAVITY | FUNCTION | WIRE COLOR |
| A | SHIFT SOLENOID A (LOW) | LIGHT GREEN |
| B | SHIFT SOLENOID B (LOW) | YELLOW |
| C | PRESSURE CONTROL SOLENOID (HIGH) | ORANGE |
| D | PRESSURE CONTROL SOLENOID (LOW) | LIGHT BLUE |
| E | BOTH SHIFT SOLENOIDS, TCC SOLENOID AND 3-2 CONTROL SOLENOID (HIGH) | PINK |
| L | TRANSMISSION FLUID TEMPERATURE (HIGH) | DARK GREEN |
| M | TRANSMISSION FLUID TEMPERATURE (LOW) | PURPLE |
| N | RANGE SIGNAL "A" | GRAY |
| P | RANGE SIGNAL "C" | RED |
| R | RANGE SIGNAL "B" | DARK BLUE |
| S | 3-2 CONTROL SOLENOID (LOW) NOT USED | WHITE |
| T | TCC SOLENOID (LOW) | BLACK |
| U | TCC PWM SOLENOID (LOW) | BLACK |
| CAVITY | FUNCTION | WIRE COLOR |
| A | 1-2 SHIFT SOLENOID "A" (LOW) | LIGHT GREEN |
| B | 2-3 SHIFT SOLENOID "B" (LOW) | YELLOW |
| C | FORCE MOTOR (+) | ORANGE |
| D | FORCE MOTOR (-) | LIGHT BLUE |
| E | 12 VOLTS +, IGNITION ON | PINK |
| L | TRANSMISSION FLUID TEMPERATURE (HIGH) | DARK GREEN |
| M | TRANSMISSION FLUID TEMPERATURE (LOW) | PURPLE |
| N | SWA | GRAY |
| P | SWB | RED |
| R | SWC | DARK BLUE |
| S | TCC SOLENOID (LOW) | WHITE |
| T | VOID - NOT USED | BLACK |
| U | VOID - NOT USED | BLACK |
 |
C1 AODE/4R70W Transmission Case Connector Location: - Passenger side of case. (top) |
| CAVITY | FUNCTION (1993-1997) | Wire Color |
| 1 | SHIFT SOLENOID 1 (LOW) | YELLOW |
| 2 | SHIFT SOLENOIDS (HIGH) | RED |
| 3 | TCC SOLENOID (LOW) | ORANGE |
| 4 | N/A | N/A |
| 5 | TRANSMISSION OIL TEMPERATURE SENSOR INPUT | BLUE |
| 6 | SHIFT SOLENOID 2 (LOW) | PURPLE |
| 7 | EPC (HIGH) | BROWN |
| 8 | TCC (HIGH) | RED |
| 9 | TRANSMISSION OIL TEMPERATURE SENSOR SIGNAL | GRAY |
| 10 | EPC (LOW) | BLACK |
| CAVITY | FUNCTION (1998-2005) | Wire Color |
| 1 | N/A | N/A |
| 2 | TRANSMISSION OIL TEMPERATURE SENSOR SIGNAL | GRAY |
| 3 | TCC SOLENOID (LOW) | ORANGE |
| 4 | SOLENOIDS (HIGH) | RED |
| 5 | TRANSMISSION OIL TEMPERATURE SENSOR INPUT | BLUE |
| 6 | EPC (LOW) | BLACK |
| 7 | SHIFT SOLENOID 1 (LOW) | YELLOW |
| 8 | SHIFT SOLENOID 2 (LOW) | PURPLE |
| 9 | N/A | N/A |
| 10 | N/A | N/A |
 |
C1 E4OD/4R100 Transmission Case Connector Location: - Passenger side of case. (top) |
| CAVITY | FUNCTION | Wire Color |
| 1 | SOLENOIDS (HIGH) | RED |
| 2 | SHIFT SOLENOID 2 (LOW) | PURPLE |
| 3 | SHIFT SOLENOID 3 (LOW) | YELLOW |
| 4 | TCC SOLENOID (LOW) | ORANGE |
| 5 | COAST CLUTCH SOLENOID | RED |
| 6 | N/A | N/A |
| 7 | TRANSMISSION OIL TEMPERATURE SENSOR INPUT | BLUE |
| 8 | TRANSMISSION OIL TEMPERATURE SENSOR SIGNAL | GRAY |
| 11 | EPC (HIGH) | BLACK |
| 12 | EPC (LOW) | BROWN |
Each of the connectors described in the following section has a corresponding connector number assigned to it that corresponds with the connector face diagrams in the preceding section, 2.1.
The main transmission connector is the round gray one on GM harnesses and the large white connector on the Fords. It connects all of the internal transmission solenoids. Simply plug it into the connector of the transmission. Note: The connector is keyed to line up in one orientation only. On GM applications, line the arrow on the TCIŽ harness up with the notch on the case connector.
4L60E/4L65E - connector is located on the passenger side of the case. |
4L80E/4L85E - connector is located towards the rear of the driver side of the case. Note: Pre-1993 units will need to have an updated internal harness/connector installed to be compatible with the TCIŽ TCU harness. Use either TCIŽ 276610, GM #24200161 harness or aftermarket equivalent. |
AODE/4R70W - connector is located on the passenger side of the case. |
E4OD/4R100 - connector is located on the passenger side of the case. |
GM - If you are installing the transmission in a vehicle that does not have a throttle position sensor (TPS), you must install one (the TCU needs to know the throttle position in order to determine proper shift points/firmness). TCIŽ offers a remote-mount TPS for carbureted applications (Part #374400). If you are installing the 4L60E/4L65E/4L80E/4L85E behind a fuel-injected engine, you can simply utilize the existing TPS sensor. TCIŽ offers three different adapter harnesses that allow the TCU main harness to be pigtailed into an existing TPS while still functioning with the engine control module. This is a plug-and-play solution for splitting the TPS signal.
|
Description |
Part # |
|
TPS Adapter Harness for 2nd generation-style TPS |
377200 |
|
TPS Adapter Harness for 1st generation-style TPS most commonly found on earlier computer-controlled carburetors |
377201 |
|
TPS Adapter Harness for 3rd generation-style TPS with the round connector found on 1994-up OE applications |
377203 |
Ford TPS - See Part One - 2.2.17
This connector allows the TCU to interface with your laptop. The TransComp connector plugs into the supplied, 5-ft. communication cable.
GM - The TCU also needs a connection to the factory distributor. This lets the computer know the engine RPM. The computer uses this information to control Wide Open Throttle (WOT) shift points. If you have a late model GM electronic distributor, you can buy a TCIŽ distributor harness adapter (Part #377100) and plug the TCU connector into the adapter. If you do not have the harness adapter, you will need to splice into the vehicle distributor wiring.
Alternatively, you may utilize the tach output signal from an aftermarket ignition control. Connect the white wire going to Terminal A of connector C4 to the tach output.
4L80E/4L85E only - This connects to the input speed sensor (TISS) on the 4L80E/4L85E transmission. This sensor is located in the driver side of the case, towards the front. The 4L60E/4L65E transmission does not use this input.
Optional - A neat feature of the T-Com WP software is the ability to sharpen the shift feel at the flick of a switch. This is accomplished by hooking this lead to a dash/console-mounted toggle switch. Run the other switch pole to ground. The default position (off) will be the Economy setting. When switched on (grounded), the TCU will increase transmission line pressure by whatever percentage is prescribed by the user in the T-Com WP software. See Part Two-5.2.1.1.9 for more information.
This connects to the output speed sensor (TOSS/VSS) located in the tailhousing of the transmission. The TCU uses this input to calculate road speed. 1993-1995 4L60E, all 4L80E/4L85E, all AODE/4R70W & all E4OD/4R100 transmissions have this sensor located on the driver side. The 1996 & later 4L60E/4L65E transmissions with removable bellhousings have the VSS sensor located on the passenger side. Note: 1993-1995 4L60E speed sensors require a different connector.
Labeled 'TCC'. The 4L80E/4L85E and 4L60E/4L65E have slightly different pin outs for TCC activation. There are three separate leads for the TCC on the TCU harness, this being the common lead. It will need to be plugged into either connector C9 or C10 depending on which transmission you will be running.
When running a 4L80E/4L85E, this lead is to be plugged into connector C8, labeled 'TCC'.
When running a 4L60E/4L65E, this lead is to be plugged into connector C8, labeled 'TCC'.
The TCU is configured such that it's possible to have fully manual upshifts and downshifts at the flick of a switch like a bump stick. This works by first activating the manual mode with one switch to Terminal C. Once activated, the transmission can be bumped up (Terminal B) or down (Terminal C) through the forward gears via an On-Off-On momentary rocker switch.
The connections are to be made as follows:
Terminal A (red wire) - momentary +12 volts for bump down
Terminal B (yellow wire) - momentary +12 volts for bump up
Terminal C (blue wire) - +12 volts to activate manual mode
Caution: Be aware that serious engine damage could occur due to over-revving if downshifts are made at too high of vehicle speed. T-Com WP cannot override your input while in the manual mode.
Plug this into the TCU bulkhead connector on the left-hand side. Snug the retaining bolt using a ź" socket. Do not over tighten.
Optional: For vehicles equipped with analog (mechanical) speedometers, TCIŽ offers a Speedometer Control Unit (Part# 377300) which uses the VSS signal to drive a standard style speedometer cable. Plug this into the SCU lead.
The preferred method is to connect the ground wire on the wiring harness directly to the battery. This will reduce the amount of electrical noise to the TCU. The black wire with a 3/8" ring terminal is the ground. The ground connection should be free of paint and corrosion if grounded directly to the chassis or engine block.
The Pink wire labeled '+12 V Switch' is the 12-volt ignition wire. A 10-amp inline fuse should be utilized between the power source and the TCU. This wire should only be hot when the key is in the ON position.
If your present shifter does not have provisions for a Park/Neutral safety switch and Reverse light switch, you may choose to utilize the switches built onto your transmission shift lever if so equipped.
For smoother operation, it's suggested that the TCC wire be run through a factory brake pedal switch (NC) so the TCC will unlock when you apply the brakes. On the GM harness this is the white wire with black stripes labeled 'TCC' that terminates with connector C8.
If you are installing the transmission in a vehicle that does not have a throttle position sensor (TPS), you must install one (the TCU needs to know the throttle position in order to determine proper shift points/firmness). TCIŽ offers a remote-mount TPS for carbureted applications (Part #374400). If you are installing the AODE/4R70W/E4OD/4R100 behind a fuel-injected engine, you can simply utilize the existing TPS sensor by splicing the TCU harness into the vehicle engine harness. Locate the three wires on your harness labeled TPS. Connections are as follows:
Terminal A (black wire) - TPS ground
Terminal B (brown wire) - TPS signal
Terminal C (red wire) - +5 volts
The TCIŽ AODE/4R100 TCU has a provision for an OD cancel switch similar to OE Ford vehicles. Locate the white wire labeled OD CANCEL Hook this lead to a dash/console-mounted toggle switch. Run the other switch pole to ground. The default position (off) will be the normal OD setting. When switched on (grounded), the TCU will disable OD range allowing the vehicle to operate in first, second and third gears only.
The TCU also needs a connection to the factory distributor. This lets the computer know the engine RPM. The computer uses this information to control Wide Open Throttle (WOT) shift points. Locate the leads labeled RPM REF. You will need to splice the white RPM wire into the vehicle distributor wiring. The black wire is a ground. Alternatively, you may utilize the tach output signal from an aftermarket ignition control. Connect the white wire to the tach output.
The TCU utilizes information from the factory range sensor to determine what range the transmission is in i.e., Park, Neutral, Reverse, OD, 2 or 1. Simply plug the range sensor connector labeled GEAR SELECT into the range sensor.