GEN3 Powertrain Controller Transmission Control User`s Manual
Contents
1. Bigstuff3 GEN3 Transmission Control Manual As you will notice there are only two windows in the Torque Converter Clutch TCC table This is because the converter is only allowed to Lock up in third and fourth gear with a four speed transmission and fourth and fifth gear with a five speed transmission The Active window identification and the method for changing lock and unlock points is the same as was outlined in the Shift_Tables section above The TCC table is used to configure when the torque converter locks and unlocks in third and fourth gear with a 4 speed transmission as a function of vehicle speed MPH and percent throttle opening The green line in the windows above represents the points when the torque converter begins to lockup based on settings in the Torque _Converter_Control section of the Transmission Configuration table The red line represents the points when the torque converter unlocks The area between the red and green lines is the hysterisis needed to keep the transmission from continually locking and unlocking The Active window will move up or down within the TCC Table depending on which gear the transmission is operating in The Active window will always be larger than the other windows The X axis Throttle Position amp Y axis Vehicle Speed in MPH parameters will be will be displayed as the Active window as it moves from gear to gear When the ECU is powered and the whee2. GEN3 Powertrain Controller Transmission Control User s Manual April 2005 Bigstuff3 GEN3 Transmission Control Manual Table of Contents Chapter Hyperlink Page s Introduction a ee System Contents ae System Installation Overview System_Install_ Overview Transmission Harness Installation Trans_Harness_Install Transmission Wire Harness Connection Points 8 Connection Points Illustration Shil Table SU gg I oa oo Shift Table Dash a Save Dash Save A Dash E Save_A_Dash Pin Out Definition Pinout Definition Introduction Thank you for purchasing BigStuff3 s GEN3 PRO SEFI Powertrain Control system with integral Transmission Control BigStuff3 s GEN3 ECU is the only aftermarket engine management system to integrate transmission control into a single ECU BigStuff3 1s currently offering transmission control for GM s 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 predecessors Bigstuff3 GEN3 Transmission Control Manual Transmission Control System Contents The transmission control option is sold with this user s manual and the standalone transmission wire harness shown below The remaining transm
3. window is the term used to describe the window gear the transmission is operating in The Active window will move up or down within the Line Pressure Table depending on which gear the transmission is operating in The Active window will always be larger than the other inactive windows The X axis Throttle Position amp Y axis force motor duty cycle parameters will be displayed as the Active window moves from gear to gear Changing Line Pressure Points Using the Computer Mouse and Arrow Keys Using the Mouse To change a line pressure value place the mouse arrow on the box along any green line depress and hold the left mouse button and move the box up or down Once the left mouse button is released the new line pressure will be displayed in yellow numbers The duty cycle value for any line pressure point can also be reviewed by left mouse clicking on the line pressure box on any line Using the Arrow Keys Line pressure changes can also be made using the keyboard arrow keys in Edit Mode To enter Edit Mode hit the SHIFT key on the computer keyboard The background of the entire LP Table will turn blue and Edit Mode will appear in the gear position box see screen print below The SHIFT key may need to be hit twice to enter Edit Mode depending on the PC operating system being used Bigstuff3 GEN3 Transmission Control Manual C E O BB ear When th
4. in The Active window will move up or down within the Shift Table depending on which gear window the transmission is operating in The Active window will always be larger than the other inactive windows and the X axis Throttle Position amp Y axis Vehicle Speed in MPH parameters will also be displayed as the Active window moves from gear to gear STUFF i 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 butt
5. screens Bad sync Cn Base Inj Piw BLM Cell Ptr lt lt Remove All BLM Corr BLM Timer Ranct Cancel After selecting a Dash to configure Signals need to be selected and added to the Dash After the Signals are selected added and saved they will be displayed in the Dash at the bottom of the relevant BigComm software screens The left side of the drop down screen below shows the Available Signals The right side of the drop down screen below shows the Signals in the Dash To add Signals to the Dash highlight a desired Signal on the left and click Add The Signal will move to the STUFF 19 Bigstuff3 GEN3 Transmission Control Manual right side of the screen Signals in the Dash All Signals shown under Signals in the Dash will now appear at the bottom of the TCC screen when that screen is used to calibrate the TCC Table In the TCC Table below Gear MPH TPS and Trans Mode Code where selected and added to Signals in the Dash JK ji ST Refresh 70ms TCC Table Dash Ri Dash Setup TCC Table Signals in this Dash Available Signals Signals ea selected for Add gt RPM the TCC TPS Add All gt gt Trans Gear Ratio Dash lt Remove Remove All Available Signals Cancel Apply In the screen print below notice that the same Signals appear in the Dash
6. value of any point on any line in the table Use the left and right arrow keys to get to the desired shift point in any window gear As the cursor moves across the up shift green line and down shift red line lines the MPH values for each shift point are displayed Once the desired shift point is reached use the up and down arrow keys to increase or decrease the MPH value for that shift point The value MPH can be increased or decreased in 1 MPH increments To get out of Edit Mode hit the SHIFT key again STUFF D Bigstuff3 GEN3 Transmission Control Manual E SS Fr inne When the key board Shift key is depressed Edit Mode is displayed in the gear position box Cursor displaying MPH value for this shift point value The blue background designates that the table is in Edit Mode saht ha tagge Cirsa rdt Mede TPS 0 0 MPH 0 Gear 0 Trans Mode Code 0 The MPH associated with any shift point box will be displayed as the cursor moves from point to point along the red or green lines Lastly there are safety parameters in the software that do not allow an up shift or down shift point from one table gear to overlap a shift point in another table gear Torque Converter Clutch TCC Table N a as aar Refresh 10ms j Y 5 i o a a O MPH 0 lt Shift to toggle Cursor Edit Mode TPS 0 0 hiPH 9 Gear 0 Trans Mode Code 0 13
7. 55 will lock the converter very quickly A number like 128 will lock the converter at a much slower rate It is better to start with a lower value gradually increasing the number until the desired clutch lock rate is achieved e TCC Delay sec Torque Converter Clutch Delay TCC Delay is the time between when the criteria below are met and when the torque converter begins to lockup o Delay Criteria Minimum throttle position for idle is exceeded by the TPS e Note the torque converter is unlocked if the throttle is closed Vehicle Speed Vehicle speed has to exceed the value set via the green line in the TCC table described later in this manual Transmission Fluid Temperature This variable is hard coded at the factory When the above criteria are met the torque converter clutch begins to lockup The lockup starts at a 30 duty cycle and is completed at 80 duty cycle The rate at which the converter goes from 30 duty cycle to 80 duty cycle is determined by the TCC_Rate described above Line Pressure e Reverse Gear Modifier The value inputted into this cell is used by the ECU to eliminate the drive line clunking that can occur when the transmission is put into reverse The ECU reduces the line pressure by the value in the cell as a percent of total line pressure In the table above the value used is 20 which the ECU will use to reduce the total available line pressure by 20 when the transmission is put int
8. Fuel WarmUp Dash Logging Configuration PC Windows Help Z An TA Iffline C Program Files BigStuff Biglomm Leo s C167Vette bi Enter a filename Save in BigCcomm amp ex FA Help E Default dsh E dtps dt dsh Ej Learn Dash dsh E Log Window dsh E MAP AE Decay dsh File name ID efault Save as type Dash File Cancel WhenUSEARCH Q Search tg Start Screen Prints GEN1_BigCom a BigComm e Name the file Default and hit Save By selecting Default as the file name the Log Window dash becomes part of the compilation called Default Dash Again the file will be saved to C Program Files BigStuff BigComm directory Bigstuff3 GEN3 Transmission Control Manual e A unique file name can also be assigned by typing the name in the File Name sub window and clicking on Save Pin out Definition For ECU Header Connector Marked Trans ECU a Wire Name ora Wire Name Pin es es ee KK UR Oe S O SOLENOIDB M3 FO oxo tee NS FORCE MOTOR po P SOLENOIDAT PBF rs Se ee 2 TOSS S28 TOSS nso e e TISSU SENSOR EIN GND SWA 22
9. ank 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 warranty Back_to_Switch_Ignition Y Wire Harness Main Connector The 30 way harness side main connector mates with the GEN3 ECU header connector marked with Transmission This connector will only fit in one direction but must be mated with the ECU header connector marked Transmission Note It 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 SD STUFF 7 Bigstuff3 GEN3 Transmission Control Manual Valve Body 15 Amp Fuse This fuse protects the transmission valve body Back_to_Valve_Body_Fuse 4L80E Transmission Wire Harness Connection Points Illustration TOSS Sensor Connection 20 Pin Transmission Header Connector TISS Sensor Connection Big
10. at the bottom of the TCC screen Bo BB Bein ki E lt Shift gt to toggle Cursor Edit Mode TPS 0 0 RPM 0 MPH 0 Trans Gear Ratio 0 071 Gear 0 20 Bigstuff3 GEN3 Transmission Control Manual Save a Dash Again the recommended way to configure the Default Dash is to configure each of available dash s or most frequently used dash s to your liking and then save them as the Default Dash This way every time you open the BigComm software the dash s will be open to the preferred configuration Once the Default Dash has been saved individual dash s can be changed and saved again as part of the compilation of dash s referred to as the Default Dash The steps for saving a reconfigured Dash so that it becomes part of the Default Dash are outlined below e After configuring a Dash hit OK at the bottom of the Dash Setup window The window will close e Go back to Dash on the Main Window tool bar and Select Save To File from the Dash drop down list The screen below will open Note Before saving the Shift or TCC dash s for the first time you need to navigate to the C Program Files BigStuff BigComm directory This step only occurs the very first time any Dash file is saved Subsequent Dash file saves will automatically be saved to the C Program Files BigStuff BigComm folder File Spark Idle Learning Transient Fuel Air Fuel Ratio Individual Cylinder Starting
11. d down arrow keys to increase or decrease the MPH value for that TCC point The value MPH can be increased or decreased in 1 MPH increments To get out of Edit Mode hit the SHIFT key again Line Pressure LP Table The Line Pressure LP table is used to configure transmission line pressure up shift firmness for each gear as a function of percent throttle opening There are only green lines in the LP table since line pressure shift firmness is the only variable being controlled There is an inverse relationship between the force motor duty cycle and line pressure In other words the lower the percent duty cycle the higher the line pressure and the higher the percent duty cycle value the lower the line pressure and the less firm the gear shift will be ei 1s Bigstuff3 GEN3 Transmission Control Manual w BigComm LP Table File Spark Idle Learning Transient Fuel Air Fuel Ratio Individual Cylinder Starting Fuel Warmup Boost Dash Transmission Logging Replay Configuration PC Windows Help ol X Z d eJ aam Offline C Program Files BigStuff BigComm Vett_C167_Trans big The Y Axis represents force Motor duty cycle from 0 to 100 The X Axis represents of throttle opening or position TPS from zero to 100 lt Shifk gt bo toggle Cursor Edit Mode i a ar start i Bigcomm 7 BigCorn all Documenti Micr ci i ay LL ot PM The Active
12. e key board SHIFT key is depressed Edit Mode is displayed in the gear position box The blue background designates that the table is in Edit Mode Left amp Right Arrow Keys When the LP Table is in Edit Mode the table background will be blue the left and right arrow keys can be used to scroll across the green lines in each window gear Moving from window to window gear to gear within the LP Table can also be achieved using the left and right arrow keys Depressing the right arrow key repeatedly will move the cursor all the way to the right in each window When the cursor reaches the last line pressure point to the right in each window it will jump up to the next gear window Using the left arrow key will move the cursor left down from one window to the next until it reaches the first point in first gear LP window Up amp Down Arrow Keys The up and down arrows keys can be used to change the duty cycle value of any point on any line in the table Use the left and right arrow keys to get to the desired line pressure point in any window gear As the cursor moves across the line pressure points along the green lines the force motor duty cycle values for each line pressure point are displayed Once the desired line pressure point is reached use the up and down arrow keys to increase or decrease the duyt cycle value for that line pressure point The value duty cycle can be increased or d
13. e transmission wire harness between the GEN3 ECU and the transmission The wire harness installation process is very straightforward There are a total of 5 connections that need to be made as outline below o Two 2 connections to the Transmission Input TISS and Output TOSS Sensors These connections are made directly with the stock sensors on the transmission Note 4L60E transmissions only have a TOSS sensor o One 1 connection to the stock 20 pin connector on the transmission o The transmission wire harness header connector to the GEN3 ECU header connector marked Transmission o The 12v Switched wire connection e Step 2 Configure the ECU for the transmission being used e Step 3 Configure the Operating Tables Specifically the Shift Torque Converter Clutch TCC and Line Pressure LP tables Bigstuff3 GEN3 Transmission Control Manual Transmission Wire Harness Installation To improve the overall wire harness installation process the transmission wire harness was manufactured with identification labels at the end of each wire or connector to Firewall grommet ensure that connections are properly made The transmission wire harness has two halves one half is intended to be located inside the vehicle with the ECU the other half connects to the sensors on the transmission The two halves of the harness are separated by a firewall grommet see photo designed to fit snuggly in a 2 1 8 hole which needs
14. earning Transient Fuel Air Fuel Ratio Individual Cylinder Starting Fuel WarmUp 8Eee Logging Configuration Windows Z E T as d Settings Leo Meaney My Documents Big Load from File Save to File a Ea r s start BigComm Screen Prints ta Screen Prints cay Documenti Mie ja WL 3 35PM Release the left mouse button The screen below will open 18 Bigstuff3 GEN3 Transmission Control Manual Left Click on the Pick Dash drop down screen 3 aS CT Refresh 80ms Pick a Dash drop down screen Pick Dash Available Signals Add gt Add All gt gt Sc lt Remove lt lt Remove All pd Cancel Apply The screen below will appear ESI ikd AfterStart Delay Table Ait Fuel Ratio Table Coolant Correction T able Coolant Correction Table Cranking Table Desired Idle RPM Table dMAP v KPa Table Driveshaft Threshold T able d7PS dt Table Events dMAPdt Table Fuelling Table a IAC Start Position Table Idle Spark T able Injector Opening Time T able 10 Status Window Lamda Window Leaming able Log Window MAP AE Decay Table MAP AE Inc Table Negative 02 Correction Table Positive O2 Correction Table Projected Driveshaft Table Run Time Correction Table park Advance This is the list of thirty one 31 available Dashboards Once configured these Dashboards will show up at the bottom of the corresponding operating
15. ecreased in 1 increments To get out of Edit Mode hit the SHIFT key again The transmission is now ready for operation Dash A Dash short for Dashboard can be configured and displayed at the bottom of the TCC and Shift Table Operating Screens within the BigComm software A Dash needs to be selected configured and saved as a default before it will appear at the bottom of the BigComm software Operating Screen Up to thirty one 31 individual Dashes can be configured to display various engine parameters also referred to as Signals 17 Bigstuff3 GEN3 Transmission Control Manual When the BigComm software is launched it uses the Default Dash which contains the 31 separate Dash s from the C Program Files BigStuff BigComm folder The Default Dash is actually a compilation of the 31 available Dash s The recommended way to configure the Default Dash is to configure each of the available dash s or most frequently used dash s to your liking and then save them as the Default Dash This way every time you open the BigComm software the Dash s will be open to the preferred configuration Configure Dash To configure a Dash go to Dash on the main Tool Bar Left click on Dash and the drop down screen shown below will open Keep the left mouse button depressed and slide the mouse pointer down until Configure Dash is highlighted x BigComm Fie Spark Idle L
16. ission control functionality is contained within the GEN3 ECU when it is ordered with the transmission control option GEN3 ECU s sold with the transmission control option will have two 2 header connectors one at each end of the ECU vs one header connector for the fuel and spark only ECU s It 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 The header connector at one end of the GEN3 ECU will be marked Transmission to indicate the header location where the transmission wire harness must be connected to Bigstuff3 GEN3 Transmission Control Manual TRANSMISSION The header connector will be marked Transmission to indicate where to connect a a A aligis the transmission harness to J3NI9N3 System Installation Overview The BigStuff3 transmission control wire harness was designed to connect directly to the stock GM input and output shaft speed sensors and the stock 20 pin header connector on the transmission The steps required to configure the GEN3 s transmission control feature are described in detail in this manual A brief overview of the installation and configuration process is described below e Step 1 Install the BigStuff3 Transmission Wire Harness Install th
17. lCyincer Stating uel Wamp Doo ech Tremi Logging Replay Gongumenn PE Windows Helo E o Bm asm When the key board SHIFT key is depressed Edit Mode is displayed in the gear position box The blue background designates that the table is in Edit Mode TPS 0 0 MPH 0 Gear 0 Trans Mode Code 0 Left amp Right Arrow Keys When the TCC table is in Edit Mode the table background will be blue the left and right arrow keys can be used to scroll across the red and green lines in each window gear Moving from window to window gear to gear within the TCC table can also be achieved using the left and right arrow keys Depressing the right arrow key repeatedly will move the cursor all the way to the right in each window When the cursor reaches the last TCC point to the right in each window it will jump up to the next gear window Using the left arrow key will move the cursor left down from one window to the next until it reaches the first point in the third gear TCC window Up amp Down Arrow Keys The up and down arrows keys can be used to change the MPH value of any point on any line in the table Use the left and right arrow keys to get to the desired TCC point in any window gear As the cursor moves across the lock green line and un lock red line lines the MPH values for each shift point are displayed Once the desired shift point is reached use the up an
18. ls 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 torque converter begins to lock and when the ellipse moves below the red line the torque converter will unlock The ECU does not allow the converter to remain locked during a gear shift Changing Lock and Unlock Points Using the Computer Mouse and Arrow Keys Using the Mouse To change torque converter lock and unlock 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 lock or unlock point MPH will be displayed in yellow numbers The MPH value for any lock or unlock point in the table can also be reviewed by left mouse clicking on any TCC box Using the Arrow Keys Lock and unlock point changes can also be made using the keyboard arrow keys in Edit Mode To enter Edit Mode hit the SHIFT key on the computer keyboard The background of the entire TCC Table will turn blue and Edit Mode will appear in the gear position box see screen print below The SHIFT key may need to be hit twice to enter Edit Mode depending on the PC operating system being used STUFF r Bigstuff3 GEN3 Transmission Control Manual S AlpCarers TCE Table 4 Ge pek de Leeming Timeen Fus Ar PoelRate Indwidua
19. o reverse Bigstuff3 GEN3 Transmission Control Manual Shift Time e Minimum Shift Time The value inputted into this cell will be used by the ECU to determine the minimum time between successive up shifts or down shifts Shift Table b 9 BB Offline C Program Files BigS tuff BigComm ett _C167_ Trans big Inactive window Identifies P R N D L H The Y Axis parameter represents vehicle speed from zero to 250 MPH Large or Active window identifies the gear the Ag OF 100 transmission 1s currently operating in o toggle Cursor Edit Mode MPH Display The X Axis parameter represents of throttle opening or position TPS from zero to 100 Identifies the gear the transmission 1s currently in number to the left and the next gear number to the right the transmission will up shift or down shift to The shift table is used to configure transmission up shifts and down shifts for each gear as a function of vehicle speed MPH and percent throttle opening The green lines in the windows above represent transmission up shift points and the red lines represent the down shift points The area between the red and green lines is the hysterisis needed to keep the transmission from continually up shifting or down shifting The Active window is the term used to describe the window gear the transmission is currently operating
20. on is released the new shift point MPH will be displayed in yellow numbers The MPH value for any shift point in the table can also be reviewed by left mouse clicking on the shift point box Using the Arrow Keys Transmission shift point changes can also be made using the keyboard arrow keys in Edit Mode To enter Edit Mode hit the SHIFT key on the computer keyboard The background of the entire Shift Table will turn blue and Edit Mode will appear in the gear position box see screen print below The SHIFT key may need to be hit twice to enter Edit Mode depending on the PC operating system being used Left amp Right Arrow Keys When the transmission shift table is in Edit Mode the table background will be blue the left and right arrow keys can be used to scroll across the red and green lines in each window gear Moving from window to window gear to gear within the shift table can also be achieved using the left and right arrow keys Depressing the right arrow key repeatedly will move the cursor all the way to the right in each window When the cursor reaches the last shift point to the right in each window it will jump up to the next shift gear window Using the left arrow key will move the cursor left down from one window to the next until it reaches the first shift point in the first gear shift window Up amp Down Arrow Keys The up and down arrows keys can be used to change the MPH
21. onnect To See TISS Sensor Connection See TOSS Sensor Connection Connect to a 12V source that is live when the ignition key is in the start position See Twenty_Pin_Connector_Con nection GEN3 ECU Header Connector Marked Transmission Further Details See TISS Sensor Only 4L80E transmissions have TISS sensors See TOSS Sensor See Twelve Volt Switched Directly below this table See Harness Main Connec tor Bigstuff3 GEN3 Transmission Control Manual Wire Color Label Harness Label Connector Connect To Further Details Type Definition Transmission Valve Body Fuse Valve Body N A 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 Twenty_Pin_Connector_Connection Input 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
22. stuff3 GEN3 Transmission Control Manual Transmission Configuration Configuring Shift TCC amp LP Tables z From the main BigComm tool mio Col eA eA _ bar left click on iad Transmission Keep the left mouse button depressed and slide the mouse pointer down until Configure is highlighted Release the left mouse button The screen below will open E i Ja T e alres 141s s Spesc Tongue Cr vela Cukul TCC Reta lt TCC Delap fev 17 5 Linz Pre33 4 Revere Fea bailie Chil Tire Mrrirum Skilt 7 me sec Ur Bigstuff3 GEN3 Transmission Control Manual The steps required to configure the GEN3 ECU to the transmission are described in the following paragraphs Gearbox Type Select the appropriate transmission type The GM 4L60E or 4L80E transmissions are the currently available transmission options Select the transmission type installed in the vehicle Gears Select the number of gears for the transmission being used The 4L60E and 4L80E both are 4 speed transmissions so select 4 speed Torque Converter Control The converter solenoid locks the torque converter which prevents transmission slippage and allows the input shaft to apply a 1 to 1 ratio with the given gear e TCC Rate Torque Converter Clutch Rate TCC Rate is the rate at which the torque converter lockup is applied The larger the number inputted the quicker the converter clutch will be locked A number like 2
23. 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 transmission Note The 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 TISS_ Sensor Connection Back To TISS Sensor Bigstuff3 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 TOSS Sensor Connection Back To TOSS Sensor EERE ross 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 aL during cranking is to check it with an inexpensive O voltmeter Securely fasten the voltmeter s red positive wire to the ignition input on the fuse block Secure the voltmeter s black wire negative to a ground location on the fuse block or another adequate location Once the voltmeter connections are made cr
24. to be located in the firewall The best location for the firewall hole is in an unobstructed location on the side of the passenger compartment closest to where the ECU will be mounted Care should be taken not to locate the grommet hole too far from the transmission Doing so may affect the wire lengths that connect to the sensors on the transmission Some initial layout investigations should be made before the grommet hole is made in the vehicle sheet metal The paragraphs below describe how and where each connection should be made Hyperlinks underlined blue wording in the column titled Further Details were included to further assist with the transmission wire harness installation Left clicking the PC s mouse on the hyperlink will immediately link to a photo of the connector along with additional installation information To return to the same location in the table simply left click on the Return to hyperlink at the end of the text Harness Label TISS TOSS 12V Switch 4L60E 4L80E Trans Wire Harness Main Connector Wire Color Connector Type Black 2 way Packard Connector with blue Seal Black 2 way Packard Connector with blue Seal Single pink wire Gray 20 Pin Connector Black 30 Way Connector Label Definition Transmission Input shaft Speed Sensor Transmission Output shaft Speed Sensor Switched 12V supply input Main harness side connector to the transmission C
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