COMPUSHIFT II

System Design

  • High-speed microcontroller running COMPUSHIFT II software
  • Software-preprogrammed shift and pressure tables, proprietary shift algorithms, built-in diagnostics and display software
  • Nonvolatile memory for storage of calibration and programming information
  • High-density multilayer surface-mount printed circuit board
  • Factory- and field-upgradeable

Programming

  • Factory programmed with all necessary software
  • Adjustments, setup and calibration via handheld display or PC setup utility
  • No PC or laptop computer required to completely program COMPUSHIFT II

Chassis

  • Chassis is a factory-sealed black powder-coated aluminum box with mounting flanges. There are no user-serviceable parts inside. The chassis should not be opened.
  • Dimensions
    • 4.875 x 6.375 x 2.125″ (excluding mounting flanges)
  • Mounting Flange Dimensions
    • 0.625 x 6.375″ (two flanges, opposite ends)
  • Mounting Holes
    • 2 – #10 holes per flange

Mounting Requirements

  • Controller must be mounted in a dry area, not exposed to heat from the exhaust, cooling, or heating systems
  • Controller must have clear air circulation (a 1″ air clearance around the sides and top is recommended)

Environmental Requirements

  • Relative Humidity
    • 0% – 90%, non-condensing
  • Temperature (Operating)
    • -30º – 60º C (-22º – 140º F)
  • Temperature (Storage)
    • -30º – 85º C (-22º – 185º F)
  • Protection
    • Automatic internal shutdown for over-temperature condition
    • Automatic protection against failed solenoids

Electrical Specifications

  • Supply Voltage
    • 8 – 16 volts DC
  • Supply Current, Quiescent
    • 600 mA @ 14.4 volts
  • Supply Current, Maximum
    • 5 A @ 14.4 volts (dependent on transmission type)
  • Solenoid Capacity
    • 12 solenoids drivers with automatic short-circuit protection
    • Short- and open-circuit detection with fault reporting
  • Tachometer Input
    • High impedance 0 – 12 volt signal input
    • Tachometer input not required. Used for wide-open throttle upshift and data logging.
  • Speedometer Input
    • Designed for variable reluctance inductive pickup on GM and Ford transmissions
    • Can function with appropriately conditioned 0 – 12 volt signal
  • Speedometer Outputs
    • Reproduced OEM TOSS Signal
    • Variable pulse count per drive shaft revolution
  • Throttle Position Sensor Input
    • 0 – 5 volt input, filtered against line noise
  • Automatic calibration to stroke range
    • 5 volt reference signal provided
  • Dual CAN buses for connection to vehicle networking

Connectors

  • Power – connection to vehicle power
  • Engine – connection to throttle position sensor, tachometer, speedometer, MAP sensor
  • Options – connection to display and accessory switches and indicators
  • Trans A – connection to transmission
  • Trans B – connection to transmission and optional hydraulic pressure sensor
  • USB – connection to PC

Indicators

  • 1 Red/Green LED indicating system status