US Shift Quick 4 - User Manual

On-Board Diagnostic
and Tuning Interface

Summary

Clear Function and Error Codes

Clear Learned Data

Over-current Condition (OCP)

Over-current condition detected with pressure control solenoid. Vehicle should not be driven.

Solenoid Bank Over-current (OC1, OC2, OC3)

Over-current condition detected with solenoid banks 1, 2, or 3. Controller attempts to disable the affected bank.

Tuning Menu Options

Closed Throttle Position (CtP)

Adjusts idle TPS voltage threshold to determine idle position and prevent false failure detection.

Full Throttle Position (FtP)

Adjusts WOT TPS voltage threshold for correct shift points and line pressure.

1-2 Upshift RPM (1:2 U)

Adjusts full-throttle shift RPM for the 1-2 upshift. Value displayed in thousands.

2-3 Upshift RPM (2:3 U)

Adjusts full-throttle shift RPM for the 2-3 upshift. Value displayed in thousands.

3-4 Upshift RPM (3:4 U)

Adjusts full-throttle shift RPM for the 3-4 upshift. Value displayed in thousands.

Light Throttle Upshift RPM (LtU)

Adjusts light-throttle shift RPM for all shifts, scaled proportionally with 2-3 upshift.

Torque Converter Clutch Engagement (tCC)

Sets input shaft RPM for torque converter clutch engagement.

Light Throttle Shift Firmness (1:2 F, 2:3 F, 3:4 F)

Adjusts shift firmness (PSI) for each upshift at light throttle. Affects shift feel.

Heavy Throttle Shift Firmness (HtF)

Adjusts heavy-throttle shift firmness for all upshifts. Higher values provide firmer shifts.

Speedo Output Configuration (SPO)

Save and Exit (SAE)

Saves changes to the selected table and exits to the main menu.

Discard and Exit (dIS)

US Shift Quick 4 Specifications

General

Category	Transmission Controller
Input Voltage	12V DC
Features	programmable shift points
Output Voltage	12V DC
Operating Temperature	-40°C to 85°C