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HGM COMPUSHIFT Mini Manual

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COMPUSHIFT Mini Manual
COMPUSHIFT Mini Manual
Exported on  12/08/2020

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Summary of Contents for HGM COMPUSHIFT Mini

  • Page 1 COMPUSHIFT Mini Manual COMPUSHIFT Mini Manual Exported on  12/08/2020...

  • Page 2: Table Of Contents

    COMPUSHIFT Mini Manual  –  COMPUSHIFT Mini Manual Table of Contents Preparing for Your Installation ................6 1.1 Vehicle Preparation........................6 1.2 A Word About Adjusting the TV Cable ..................6 1.3 GM 700R4 / 2004R.........................7 1.4 Chrylser A518 / A618 ........................7 1.5 Additional Planning ........................7 1.6 Other Considerations........................7...
  • Page 3 COMPUSHIFT Mini Manual  –  COMPUSHIFT Mini Manual 2.5 System Checkout ........................29 2.5.1 Power On! ................................. 29 2.5.2 Pressure Sensor Check ............................30 2.5.3 Speed Sensor Check ..............................30 2.6 Throttle Position Sensor Calibration (GM)................30 2.6.1 Introduction ................................30 2.6.2 Calibration Procedure.............................. 30 2.6.3 Diagnosing Problems with TPS Calibration......................
  • Page 4 COMPUSHIFT Mini Manual  –  COMPUSHIFT Mini Manual 3.5 Overdrive Parameters (Chrysler)....................42 3.5.1 Introduction ................................42 3.5.2 Minimum Overdrive Speed ............................42 3.5.3 Wide Open Throttle Overdrive Speed ........................42 3.6 Other Status Information and Adjustments ................43 3.6.1 Throttle Position Sensor Voltage ..........................43 3.6.2 Throttle Position Sensor Calibration Low Voltage ....................
  • Page 5 • Chrylser A618 / 47RH Unlike other control modules that use vacuum switches or a simple delay timer, the COMPUSHIFT Mini uses throttle position and vehicle speed to optimize its shifting and clutch control. A built-in display and keypad lets the user adjust and tune for their specific application, and diagnose problems should they occur.

  • Page 6: Preparing For Your Installation

    The transmission should shift smoothly and correctly through its gears, and the shift linkage should be correctly adjusted. Your transmission must have a properly-calibrated speedometer gear. COMPUSHIFT Mini uses the industry standard 1000 turns per mile speedometer cable speed to determine speed. 1.2 A Word About Adjusting the TV Cable A properly-adjusted TV cable can make a world of difference in transmission and engine performance.

  • Page 7: Gm 700R4 / 2004R

     allow full adjustment and correction of TV cable problems. The COMPUSHIFT Mini is a valuable aid in doing TV cable adjustment because it can display line pressure on screen in real-time. The cable travel and slack can easily be adjusted to their proper limits because: •...

  • Page 8: Tools You Will Need

    COMPUSHIFT Mini Manual  –  COMPUSHIFT Mini Manual • Refer to the COMPUSHIFT Mini Quick Install Guide, also included in the packaging, to get an overview of all the components. 1.7 Tools You Will Need • 1/8" or 3/16" flat blade screwdrivers •...
  • Page 9 COMPUSHIFT Mini Manual  –  COMPUSHIFT Mini Manual Wiring harness, specific to the kit: Hydraulic pressure sensor (GM only): Preparing for Your Installation –  9...
  • Page 10 COMPUSHIFT Mini Manual  –  COMPUSHIFT Mini Manual Third gear pressure switch (Chrysler only): Speed sensor and fittings: Preparing for Your Installation –  10...

  • Page 11: Assembling The Speed Sensor

    COMPUSHIFT Mini Manual  –  COMPUSHIFT Mini Manual 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 has four pieces: •...
  • Page 12 COMPUSHIFT Mini Manual  –  COMPUSHIFT Mini Manual The assembly 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.  ...
  • Page 13 COMPUSHIFT Mini Manual  –  COMPUSHIFT Mini Manual Preparing for Your Installation –  13...

  • Page 14: Installing The Compushift Mini

    (see page 30) tuning (see page 35) 2.1.2 Routing the Wiring Harness The COMPUSHIFT Mini must be mounted inside the vehicle, so the wiring harness to the transmission needs to be routed through the firewall. Installing the COMPUSHIFT Mini –  14...

  • Page 15: Connecting To Vehicle Power

    COMPUSHIFT Mini Manual  –  COMPUSHIFT Mini Manual The wiring harness is equipped with suitable rubber grommet that can moved along the wire harness to the desired position.  To fit the grommet, you will have to drill or punch a 1.25" hole through the firewall in an appropriate location. The controller-side connector at the end of the wiring loom is larger than the 1.25"...

  • Page 16: Connecting To An Electronic Speedometer

    2.1.4 Connecting to an Electronic Speedometer The COMPUSHIFT Mini can drive an electronic speedometer. If desired, connect the purple wire with a white stripe to the signal input of your electronic speedometer. 2.2 Installation on GM 700R4 / 2004R 2.2.1 Installing the Pressure Sensor...
  • Page 17 COMPUSHIFT Mini Manual  –  COMPUSHIFT Mini Manual Clean the area around the plug and remove it using an appropriately-sized socket or wrench: Put a small amount of PTFE / Teflon sealant on the pressure sensor or wrap it with PTFE / Teflon pipe sealant tape.

  • Page 18: Installing The Speed Sensor

    COMPUSHIFT Mini Manual  –  COMPUSHIFT Mini Manual 2.2.2 Installing the Speed 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 the cable nut from the drive output: Remove the cable and set it aside.
  • Page 19 COMPUSHIFT Mini Manual  –  COMPUSHIFT Mini Manual 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 wrench ensuring that the speed sensor wires point toward the front of the vehicle:...

  • Page 20: Installing The Wiring Harness

    COMPUSHIFT Mini Manual  –  COMPUSHIFT Mini Manual 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.
  • Page 21 COMPUSHIFT Mini Manual  –  COMPUSHIFT Mini Manual 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 plug in the pressure sensor: Installing the COMPUSHIFT Mini –  21...

  • Page 22: Installation On Chrysler A518/46Rh And Chrysler A618/47Rh

    COMPUSHIFT Mini Manual  –  COMPUSHIFT Mini Manual Finally, use one of the provided cable ties to fasten the harness to the bellhousing as shown: Use other cable ties as needed to fasten the wiring harness clear of any rotating parts, linkages, and the exhaust system.

  • Page 23: Installing The Speed Sensor

    COMPUSHIFT Mini Manual  –  COMPUSHIFT Mini Manual Thread the switch into the port. Tighten the switch until it is finger-tight, then use a wrench to tighten it another 1.5 to 3 turns, depending on feel.   Do not use pipe sealant on this switch as it must make electrical contact with the body of the transmission.
  • Page 24 COMPUSHIFT Mini Manual  –  COMPUSHIFT Mini Manual 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: Locate the speed sensor you assembled earlier:...
  • Page 25 COMPUSHIFT Mini Manual  –  COMPUSHIFT Mini Manual 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 wrench ensuring that the speed sensor wires point toward the front of the vehicle.

  • Page 26: Installing The Wiring Harness

    COMPUSHIFT Mini Manual  –  COMPUSHIFT Mini Manual 2.3.3 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.
  • Page 27 COMPUSHIFT Mini Manual  –  COMPUSHIFT Mini Manual Then route the wires of the harness over the top of the tailhousing toward the front left side... and connect the third gear pressure switch. Installing the COMPUSHIFT Mini –  27...

  • Page 28: Install / Connect The Throttle Position Sensor

    If you are using an existing throttle position sensor, an adapter should be provided to connect it. 2.4 Using the Display The COMPUSHIFT Mini is equipped with an 8-character LCD and a 3-key keypad as shown below. Installing the COMPUSHIFT Mini –  28...

  • Page 29: Navigation Mode

    COMPUSHIFT Mini Manual  –  COMPUSHIFT Mini Manual The three keys from left to right are: down (downward-pointing arrow), up (upward-pointing arrow), and select (round dot). The display has two major modes: navigation and editing. 2.4.1 Navigation Mode The system always powers up in navigation mode. The title of each screen is printed (sometimes abbreviated) on...

  • Page 30: Pressure Sensor Check

     Because the TV cable directly affects the line pressure in the transmission, measuring the line pressure tells you what the throttle position is.  This is how the COMPUSHIFT Mini uses a pressure sensor to determine the throttle position.
  • Page 31 COMPUSHIFT Mini Manual  –  COMPUSHIFT Mini Manual Begin by starting the vehicle in park. Let the engine run long enough for it to come off the the fast idle or choke setting. This ensures that at idle the throttle is in the fully closed position.
  • Page 32 COMPUSHIFT Mini Manual  –  COMPUSHIFT Mini Manual Have an assistant press the "up" key on the COMPUSHIFT 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.

  • Page 33: Diagnosing Problems With Tps Calibration

    Turn the engine off, but then turn the ignition switch back on so that the engine is ready to start, but not running. Using the arrow keys, navigate to the throttle position sensor calibration screen on the COMPUSHIFT Mini as shown: TPS CAL Press the "select"...
  • Page 34 Press the "up" key on the COMPUSHIFT Mini to start the calibration process.    Press the accelerator pedal completely to the floor and release it.  You have five seconds to do this.

  • Page 35: Tuning And Driving

    3 Tuning and Driving As shipped from the HGM factory, the COMPUSHIFT Mini has a reasonable group of default settings. If the throttle position sensor has been properly calibrated, and the speed sensor is working properly, the rest of the system should simply work.

  • Page 36: Throttle Position

    COMPUSHIFT Mini Manual  –  COMPUSHIFT Mini Manual 56 MPH Pressing "select" again exits.     3.2.2 Throttle Position This screen shows the current throttle position as percentage from 0 to 100.   When you press the "select" button, the throttle position is shown continuously.

  • Page 37: Torque Converter Clutch

    COMPUSHIFT Mini Manual  –  COMPUSHIFT Mini Manual On the Chrysler A518/46RH and Chrysler A618/47RH, this screen shows the status of the 4th gear / overdrive solenoid. Pressing "select" again exits.     3.2.5 Torque Converter Clutch This screen shows whether or not the torque converter clutch is engaged.

  • Page 38: Torque Converter Clutch Lock Throttle Position

    COMPUSHIFT Mini Manual  –  COMPUSHIFT Mini Manual     3.3.2 Torque Converter Clutch Lock Throttle Position LK TPS This parameter is the lowest throttle position for which the torque converter clutch will lock. Usually this can be left set to 0%, but if there is shudder during deceleration with the torque converter clutch locked, this parameter can be set to a very small value (just a couple of %) to allow the TCC to unlock when the throttle is closed.

  • Page 39: Torque Converter Clutch Unlock Speed

    COMPUSHIFT Mini Manual  –  COMPUSHIFT Mini Manual The is the slowest speed at which the torque converter clutch will lock. This should usually be toward the lower end of the 4th gear operating range.     3.3.5 Torque Converter Clutch Unlock Speed ULK SPD This is the speed at which the torque converter clutch will automatically unlock if previously locked.

  • Page 40: Torque Converter Clutch Enable Gear

    COMPUSHIFT Mini Manual  –  COMPUSHIFT Mini Manual • At higher speeds and lower loads, the torque converter isn't needed, so the clutch should be locked to improve efficiency. • The torque converter helps absorb shift shock, so the torque converter clutch should be unlocked during shifting.

  • Page 41: Torque Converter Clutch Lock Throttle Position

    COMPUSHIFT Mini Manual  –  COMPUSHIFT Mini Manual   3.4.3 Torque Converter Clutch Lock Throttle Position LK TPS This parameter is the lowest throttle position for which the torque converter clutch will lock. Usually this can be left set to 0%, but if there is shudder during deceleration with the torque converter clutch locked, this parameter can be set to a very small value (just a couple of %) to allow the TCC to unlock when the throttle is closed.

  • Page 42: Torque Converter Clutch Lock Delay

    COMPUSHIFT Mini Manual  –  COMPUSHIFT Mini Manual 3.4.7 Torque Converter Clutch Lock Delay LK DLY This parameter adjusts how long after a shift until the torque converter clutch will be allowed to lock. After the transmission shifts into a gear where torque converter lock is permitted, a timer countdown begins. Once the timer reaches zero, the clutch can lock, subject to the other parameter settings.

  • Page 43: Other Status Information And Adjustments

    COMPUSHIFT Mini Manual  –  COMPUSHIFT Mini Manual 3.6 Other Status Information and Adjustments Several other screens and adjustments are available for diagnostics and fine tuning. 3.6.1 Throttle Position Sensor Voltage TPS VOLT This screen shows the current voltage on the pressure / throttle position sensor. This provides diagnostic information only.

  • Page 44: Speed Sensor Calibration

    If necessary, all of the original settings from the factory can be restored using this screen. Press "select" and then the "up" key to confirm. The COMPUSHIFT Mini will reset and all previously-set parameters will be restored to their defaults. Tuning and Driving –  44...

  • Page 45: Diagnostics

    COMPUSHIFT Mini Manual  –  COMPUSHIFT Mini Manual 4 Diagnostics Screen Label Description Type Typical Range Units State of the external switch 1. Boolean    State of the external switch 1. Boolean    State of the external switch 1. Boolean   ...
  • Page 46 COMPUSHIFT Mini Manual  –  COMPUSHIFT Mini Manual Screen Label Description Type Typical Range Units FREQ IN0 Measured frequency on the Frequency 6000 speed / tachometer input 0. FREQ IN1 Measured frequency on the Frequency 6000 speed / tachometer input 1.
  • Page 47 COMPUSHIFT Mini Manual  –  COMPUSHIFT Mini Manual Screen Label Description Type Typical Range Units TPS LOW Voltage on the throttle position Voltage Volts sensor that corresponds to 0% throttle TPS HIGH Voltage on the throttle position Voltage Volts sensor that corresponds to 100%...

  • Page 48: Additional Guides And Information

    COMPUSHIFT Mini Manual  –  COMPUSHIFT Mini Manual 5 Additional Guides and Information • Connector Pinouts (see page 48) • COMPUSHIFT Mini Quick Install Guide 5.1 Connector Pinouts 5.1.1 Connector Layout     5.1.2 Pinout Chart FUNCTION EXTERNAL SW 3 EXTERNAL SW 2...
  • Page 49 COMPUSHIFT Mini Manual  –  COMPUSHIFT Mini Manual FUNCTION BOTTOM TACHOMETER INPUT BOTTOM NO CONNECTION BOTTOM GROUND BOTTOM SPEED SENSOR 1 LOW BOTTOM SPEED SENSOR 2 LOW BOTTOM EXTERNAL SWITCH 4 BOTTOM EXTERNAL SWITCH 5 BOTTOM EXTERNAL SWITCH 6 BOTTOM SPEED OUTPUT AC...

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