Installation Checklist for All COMPUSHIFT Products

Below are some basic items to check during the installation and initial setup of many HGM products, including COMPUSHIFT transmission controllers.

Not all items below apply in all situations.

Vehicle Inspection

Verify the overall operational status of the vehicle, and confirm it is safe to drive.
Inspect the functionality of brakes, doors, trunk, hatches, and differential lockers (if any).
Check windshield wipers, headlights, running lights, windows, and throttle for proper operation.
Ensure the engine starts and idles correctly and the vehicle feels safe to drive.
Make sure there are no oil or coolant leaks.
Be sure that the tires are inflated properly.
Verify the functionality and accuracy of the tachometer and speedometer.
Confirm full throttle capability.

Ensure all splices, connections, and terminals are adequately insulated and crimped.
Verify proper cable tying of wire bundles.
Ensure thorough removal of chips after drilling holes.
Be sure that the harness doesn’t rub against screw tips or sheet metal.

Verify ground-to-ground, power-to-power, transmission ground, and COMPUSHIFT ground resistances are all below 0.2 Ohms.
Confirm proper wiring routing for CAN connection during setup/calibration.

Examine TPS voltage for smooth movement and absence of dead zones during pedal depression.
Verify TPS calibration capability and smooth transition from 0% to 100% during pedal movement.
Confirm that TPS voltage returns to the initial value upon pedal release.

Verify adequate transmission oil fill and proper functioning of the shift/brake pedal lock.
Check shift lever indication on the app or display and proper operation of the manual TCC lock switch and shift up/down switches (through switch input diagnostics).
Check transmission for smooth shifting, proper transfer case operation, and failsafe functionality in both forward and reverse.
Check for fault codes on the COMPUSHIFT.