Scan Tool Data Definitions

Scan Tool Data Definitions
Battery Voltage
The scan tool displays 0-17 volts. The level of battery voltage available at the power steering control module (PSCM).

Ignition Voltage
The scan tool displays 0-17 volts. The level of ignition voltage available at the PSCM.

Motor Voltage +
The scan tool displays 0-17 volts. The amount of voltage being supplied to the EPS motor while turning right.

Motor Voltage -
The scan tool displays 0-17 volts. The amount of voltage being supplied to the EPS motor while turning left.

Steering Calibration
The scan tool displays 1-8. The number of the steering calibration the PSCM has chosen based on the VIN. All 8 of the steering calibrations for EPS are stored in the body control module (BCM).

Steering Shaft Torque
The scan tool displays -20.70 N.m to +20.70 N.m (15.2 lb ft). The amount of torque being applied to the steering column shaft when turning the steering wheel. This signal voltage is from the detection coil of the torque sensor which is then converted to N.m by the PSCM. A - value indicates a left turn, a positive value indicates a right turn.

Vehicle Speed
The scan tool displays 0-255 km/h (0-156 mph). The actual speed of the vehicle.