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Home >> GMC >> 2007 >> Envoy 4WD L6-4.2L >> Repair and Diagnosis >> Brakes and Traction Control >> Antilock Brakes / Traction Control Systems >> Testing and Inspection >> Scan Tool Testing and Procedures >> Scan Tool Data Definitions
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Scan Tool Data Definitions



Scan Tool Data Definitions

The ABS scan tool data definitions contain a brief description of all ABS related parameters available on the scan tool. The parameters available on the scan tool are listed below in alphanumeric order.
4WD Status
- The scan tool displays Two wheel drive/Four wheel drive. The scan tool displays Two wheel drive when the transfer case is shifted into two wheel drive.

ABS Lamp Command
- The scan tool displays On/Off. The scan tool displays On when the ABS indicator is commanded on.

ABS Pump Motor
- The scan tool displays On/Off. The scan tool displays On when the ABS pump motor is commanded on.

ABS Relay Command
- The scan tool displays On/Off. The scan tool displays On when the system relay is commanded on.

ABS Stop State
- The scan tool displays On/Off. The scan tool displays On when the ABS is active.

Brake Switch Status
- The scan tool displays On/Off. The scan tool displays On when the brake is applied.

Brake Warning Lamp Command
- The scan tool displays On/Off. The scan tool displays On when the red brake warning indicator is commanded on.

Diff. Pressure/Fluid Level Switch
- The scan tool displays Ok/Low. The scan tool displays Ok when the brake fluid reservoir has an adequate fluid level.

Delivered Torque
- The scan tool displays 25-95%. The scan tool displays 25% when the PCM provides the minimum percentage of available torque in an attempt to eliminate wheel slip.

DRP Active
- The scan tool displays Yes/No. The scan tool displays Yes when the DRP is active.

Lateral Accelerometer
- The scan tool displays 0-5 Volts. The Scan tool displays 2.5 Volts when lateral acceleration is 0 g.

Longitudinal Accelerometer
- The scan tool displays 0-5 Volts. The Scan tool displays 2.5 Volts when lateral acceleration is 0 g.

Left Front Wheel Speed
- The scan tool displays 5-257 km/h (3-160 mph). The scan tool displays 5 km/h (3 mph) when the vehicle is not moving or is moving at speeds less than or equal to 5 km/h (3 mph).

LF Dump Valve Command
- The scan tool displays On/Off. The scan tool displays On when the left front dump valve solenoid is commanded on.

LF Dump Valve Feedback
- The scan tool displays On/Off. The scan tool displays On when the left front dump valve solenoid is energized.

LF ISO Valve Command
- The scan tool displays On/Off. The scan tool displays On when the left front isolation valve solenoid is commanded on.

LF ISO Valve Feedback
- The scan tool displays On/Off. The scan tool displays On when the left front isolation valve solenoid is energized.

Low Traction Lamp Command
- The scan tool displays On/Off. The scan tool displays On when the low traction indicator is commanded on.

Master Cylinder Pressure Sensor Input (kPa or psi)
- The scan tool displays 0-13,800 kPa (0-2000 psi). The scan tool displays 0 kPa (0 psi) when the brake is released.

Master Cylinder Pressure Sensor Input (Volts)
- The scan tool displays 0-5Volts.

Rear Dump Valve Command
- The scan tool displays On/Off. The scan tool displays On when the rear dump valve solenoid is commanded on.

Rear Dump Valve Feedback
- The scan tool displays On/Off. The scan tool displays On when the rear dump valve solenoid is energized.

Rear ISO Valve Command
- The scan tool displays On/Off. The scan tool displays On when the rear isolation valve solenoid is commanded on.

Rear ISO Valve Feedback
- The scan tool displays On/Off. The scan tool displays On when the rear isolation valve solenoid is energized.

Rear Wheel Speed
- The scan tool displays 5-257 km/h (3-160 mph). The scan tool displays 5 km/h (3 mph) when the vehicle is not moving or moving at speeds less than or equal to 5 km/h (3 mph).

Requested Torque
- The scan tool displays 40-95%. The scan tool displays 40% when the EBCM requests the minimum percentage of available torque in an attempt to eliminate wheel slip.

RF Dump Valve Command
- The scan tool displays On/Off. The scan tool displays On when the right front dump valve solenoid is commanded on.

RF Dump Valve Feedback
- The scan tool displays On/Off. The scan tool displays On when the right front dump valve solenoid is energized.

RF ISO Valve Command
- The scan tool displays On/Off. The scan tool displays On when the right front isolation valve solenoid is commanded on.

RF ISO Valve Feedback
- The scan tool displays On/Off. The scan tool displays On when the right front isolation valve solenoid is energized.

Right Front Wheel Speed
- The scan tool displays 5-257 km/h (3-160 mph). The scan tool displays 5 km/h (3 mph) when the vehicle is not moving or moving at speeds less than or equal to 5 km/h (3 mph).

Stability System Active
- The scan tool displays Yes/No. The scan tool displays Yes when the VSES is active.

Stability System Enabled
- The scan tool displays Yes/No. The scan tool displays Yes when the VSES is initialized and no VSES related DTCs are set.

Steering Wheel Position
- The scan tool displays -720 degrees-+720 degrees. The scan tool displays 0 degrees when the steering wheel is centered with the front wheels directed straight ahead.

System Voltage
- The scan tool displays 9.0-17.5 Volts. The scan tool displays the current battery positive voltage level at the EBCM.

Traction Control Active
- The scan tool displays Yes/No. The scan tool displays Yes when the traction control system is active.

Traction Control Enabled
- The scan tool displays Yes/No. The scan tool displays Yes when the traction control system is enabled.

Traction Control Equipped
- The scan tool displays Yes/No. The scan tool displays Yes when the vehicle is equipped with traction control.

Traction Control Slip
- The scan tool displays Yes/No. The scan tool displays Yes when the rear wheel slip occurs during acceleration.

Traction Off Lamp Command
- The scan tool displays On/Off. The scan tool displays On when the traction off indicator is commanded on.

VSES Equipped
- The scan tool displays Yes/No. The scan tool displays Yes when the vehicle has been equipped with VSES.

VSES Relay Command
- The scan tool displays On/Off. The scan tool displays On when the VSES relay is commanded on.

Yaw Rate Sensor Input
- The scan tool displays 0-5 Volts. The Scan tool displays 2.5 Volts when yaw rate is 0 deg/sec.

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