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COMPUSHIFT Mini Manual  –  COMPUSHIFT Mini Manual

Installing the COMPUSHIFT Mini

 –  

20

Reattach the speedometer cable to the output of the speed sensor:

 

2.2.3  Installing the Wiring Harness

Earlier, you pushed the wiring harness through the firewall and installed the grommet. From the underside of the 
vehicle, locate the wire harness and begin routing it toward the right rear side of the transmission. Locate the 
transmission wiring socket, shown below:

Summary of Contents for COMPUSHIFT Mini

Page 1: ...COMPUSHIFT Mini Manual COMPUSHIFT Mini Manual Exported on 12 08 2020...

Page 2: ...ation Inside the Vehicle 14 2 1 1 Locating and Mounting the Controller 14 2 1 2 Routing the Wiring Harness 14 2 1 3 Connecting to Vehicle Power 15 2 1 4 Connecting to an Electronic Speedometer 16 2 2...

Page 3: ...Pressure GM Only 36 3 2 4 Overdrive 36 3 2 5 Torque Converter Clutch 37 3 3 Torque Converter Clutch Parameters GM 37 3 3 1 Introduction 37 3 3 2 Torque Converter Clutch Lock Throttle Position 38 3 3...

Page 4: ...justments 43 3 6 1 Throttle Position Sensor Voltage 43 3 6 2 Throttle Position Sensor Calibration Low Voltage 43 3 6 3 Throttle Position Sensor Calibration High Voltage 43 3 6 4 Speedometer Adjustment...

Page 5: ...elected transmissions including GM 700R4 GM 2004R Chrysler A518 46RH Chrylser A618 47RH Unlike other control modules that use vacuum switches or a simple delay timer the COMPUSHIFT Mini uses throttle...

Page 6: ...f tension with the throttle is closed but no so much that it changes in the main line pressure As soon as the throttle starts to open the line pressure should start to increase Proper travel in the ca...

Page 7: ...er of different combinations of internal switches and wiring looms were fitted The transmission must have a proper internal wiring harness It must use a 4th gear pressure switch that is normally open...

Page 8: ...ters wire stripping pliers Soldering iron and solder or wire crimping pliers PTFE Teflon sealant or tape 1 8 Tools You May Need Depending on the installation you may also need File Tin snips Center pu...

Page 9: ...COMPUSHIFT Mini Manual COMPUSHIFT Mini Manual Preparing for Your Installation 9 Wiring harness specific to the kit Hydraulic pressure sensor GM only...

Page 10: ...COMPUSHIFT Mini Manual COMPUSHIFT Mini Manual Preparing for Your Installation 10 Third gear pressure switch Chrysler only Speed sensor and fittings...

Page 11: ...1 Hook and loop fasteners terminals and cable ties 1 10 Assembling the Speed Sensor A little bit of preparation is required before installing the speed sensor on the transmission The speed sensor kit...

Page 12: ...ssembly is straightforward The small end of the nut attaches to the small end of the speed sensor The section of drive cable goes into the speed sensor through the nut The washer goes into the large e...

Page 13: ...COMPUSHIFT Mini Manual COMPUSHIFT Mini Manual Preparing for Your Installation 13...

Page 14: ...ignition switched power One good place is under the passenger or driver side dash but you can also mount the controller on the floor pan or under a seat provided there s at least 1 of clearance and f...

Page 15: ...The controller side connector at the end of the wiring loom is larger than the 1 25 hole so it the harness must be pushed through the firewall from inside the vehicle rather than up from the transmiss...

Page 16: ...bolt to clean sheet metal through the supplied lug 2 1 4 Connecting to an Electronic Speedometer The COMPUSHIFT Mini can drive an electronic speedometer If desired connect the purple wire with a whit...

Page 17: ...Teflon sealant on the pressure sensor or wrap it with PTFE Teflon pipe sealant tape Thread the pressure sensor into the port Tighten the pressure sensor until it is finger tight then use a wrench to...

Page 18: ...Sensor As installed in the vehicle the transmission should have speedometer cable attached to the speedometer drive output of the trailhousing Clean the area around the end of the cable and unscrew th...

Page 19: ...Locate the speed sensor you assembled earlier Screw the speed sensor into the speedometer drive on the tailhousing being sure to engage the short cable inside the drive Snug the nut securely with a wr...

Page 20: ...put of the speed sensor 2 2 3 Installing the Wiring Harness Earlier you pushed the wiring harness through the firewall and installed the grommet From the underside of the vehicle locate the wire harne...

Page 21: ...SHIFT Mini Manual Installing the COMPUSHIFT Mini 21 Connect the harness plug into the socket and then connect the speed sensor at the tailhousing Then follow the wires of the harness to the front and...

Page 22: ...rotating parts linkages and the exhaust system 2 3 Installation on Chrysler A518 46RH and Chrysler A618 47RH 2 3 1 Installing the 3rd Gear Pressure Switch Locate the front servo test port on the righ...

Page 23: ...el Do not use pipe sealant on this switch as it must make electrical contact with the body of the transmission Do not overtighten The transmission case is made of aluminum and the pressure switch is m...

Page 24: ...Installing the COMPUSHIFT Mini 24 Clean the area around the end of the cable and unscrew the cable nut from the drive output Remove the cable and set it aside The drive output should look like this L...

Page 25: ...speed sensor into the speedometer drive on the tailhousing being sure to engage the short cable inside the drive Snug the nut securely with a wrench ensuring that the speed sensor wires point toward...

Page 26: ...firewall and installed the grommet From the underside of the vehicle locate the wire harness and begin routing it toward the right rear side of the transmission Locate the transmission socket shown b...

Page 27: ...T Mini Manual COMPUSHIFT Mini Manual Installing the COMPUSHIFT Mini 27 Then route the wires of the harness over the top of the tailhousing toward the front left side and connect the third gear pressur...

Page 28: ...2 3 4 Install Connect the Throttle Position Sensor If you purchased a throttle position sensor for your kit you will need to install it now and connect to to the TPS wires on the wiring loom If you ar...

Page 29: ...de Edit mode lets you see and adjust if allowed the value of the item or parameter you selected in navigation mode like this 30 MPH On screens that can be edited the up and down keys can be used to in...

Page 30: ...on The throttle valve cable or TV cable connects between the throttle assembly on the engine and the transmission The TV cable communicates the position of the throttle to the transmission hydraulics...

Page 31: ...tus This will read out as either CAL BAD or CAL GOOD depending on whether or not you have successfully calibrated the sensor before This picture shows a typical carburetor with throttle cable upper ca...

Page 32: ...FT Mini to start the calibration process Pull the TV cable smoothly as far as it will easily travel hold it for a second then release it smoothly You have five seconds to do this During the calibratio...

Page 33: ...t be enough and the calibration can fail Be sure that the TV cable can move freely In some circumstances a low engine idle speed will prevent the transmission pump from developing full line pressure d...

Page 34: ...this During the calibration process a 5 second timer counts down and shows on screen 5 00 4 00 3 00 2 00 1 00 When the time finishes the screen should show CAL GOOD Without pressing the select button...

Page 35: ...to the throttle and vehicle while you are testing Do not drive erratically as you try to explore every possible setting Consult your dealer or HGM for recommendations on how to set the parameters You...

Page 36: ...or has been calibrated Pressing select again exits 3 2 3 Transmission Pressure GM Only This screen shows the current transmission main line pressure in PSI or kilopascals depending on your units setti...

Page 37: ...eded This improves fuel economy reduces engine speed and builds less heat in the transmission Here are the basic rules used for controlling the torque converter clutch or TCC The most important consid...

Page 38: ...to a very small value just a couple of to allow the TCC to unlock when the throttle is closed 3 3 3 Torque Converter Clutch Unlock Throttle Position ULK TPS This parameter is the highest throttle pos...

Page 39: ...mer reaches zero the clutch can lock subject to the other parameter settings The main function of this parameter is to prevent a 3 4 shift from being immediately followed by a torque converter clutch...

Page 40: ...3rd and 4th The parameters below take these factors into account and allow you to tune for your engine and vehicle The drawing below illustrates the relationship between throttle speed and the torque...

Page 41: ...d Or put another way this is the throttle position at which the torque converter clutch will unlock and allow the torque converter to multiply torque This should be set somewhat above the throttle per...

Page 42: ...rysler 3 5 1 Introduction The overdrive is engaged and disengaged based on the vehicle speed and throttle position At wide open throttle the system will 3 4 upshift at the wide open throttle overdrive...

Page 43: ...he 0 throttle position 1 50V Usually this value is automatically determined by the TPS calibration If it needs to be fine tuned it can be adjusted here Press select to adjust then use the up and down...

Page 44: ...SE This menu adjusts the pulses per mile in a course fashion Each press of the up or down arrow changes the pulses per mile by 1000 counts PPM FINE This menu adjusts the pulses per mile by one count a...

Page 45: ...n OFF ON FETINH State of driver FET inhibit signal Boolean OFF ON SNS VOLT Voltage on the differential sensor usually throttle position or pressure sensor depending on the application Voltage 0 5 Volt...

Page 46: ...Vehicle speed in MPH Speed 0 200 MPH TPS Throttle position in percentage Percentage 0 100 CLOCK Running time clock Time 0 seconds LK TPS Throttle position above which the torque converter clutch is a...

Page 47: ...le Voltage 0 4 5 Volts TPS HIGH Voltage on the throttle position sensor that corresponds to 100 throttle Voltage 0 5 5 Volts PRESSURE Measured pressure in PSI when a pressure sensor is connected to th...

Page 48: ...Guides and Information Connector Pinouts see page 48 COMPUSHIFT Mini Quick Install Guide3 5 1 Connector Pinouts 5 1 1 Connector Layout 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 5 1 2 Pino...

Page 49: ...BOTTOM 1 TACHOMETER INPUT BOTTOM 2 NO CONNECTION BOTTOM 3 GROUND BOTTOM 4 SPEED SENSOR 1 LOW BOTTOM 5 SPEED SENSOR 2 LOW BOTTOM 6 EXTERNAL SWITCH 4 BOTTOM 7 EXTERNAL SWITCH 5 BOTTOM 8 EXTERNAL SWITCH...

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