Scan Tool Data Definitions

WARNING: This page is about a different car, the 2007 GMC Yukon XL, 2007 GMC Yukon, 2007 Chevrolet Tahoe, 2007 Chevrolet Suburban, and 2007 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.

2WD High Indicator Light: This parameter displays On when the transfer case shift control module commands the 2WD high indicator light On. The scan tool displays On or Off.

4WD High Indicator Light: This parameter displays On when the transfer case shift control module commands the 4WD high indicator light On. The scan tool displays On or Off.

4WD Low Active: This parameter displays Yes when the transfer case is currently in the 4WD low lock mode. The scan tool displays Yes or No.

4WD Low Indicator Light: This parameter displays On when the transfer case shift control module commands the 4WD low indicator light On. The scan tool displays On or Off.

ATC Application: This parameter displays the model number assigned to the transfer case. The scan tool displays a numeric value.

ATC Slip Speed: This parameter displays the RPM difference between the front and rear propshafts. The scan tool displays a range of 0-8,192 RPM.

ATC Software ID: This parameter displays the numbers or characters assigned to the current version of software used in the transfer case shift control module. The scan tool displays an alphanumeric value.

Auto 4WD Indicator Light: This parameter displays On when the transfer case shift control module commands the auto 4WD indicator light On. The scan tool displays On or Off.

Battery Voltage: This parameter displays the voltage measured by the transfer case shift control module at the transfer case shift control module battery feed. The scan tool displays a range of 0-25.5 volts.

Current Slip Adapts: This parameter displays corrective adjustments made by the transfer case shift control module for wheel slip events. The scan tool displays a numeric value.

Encoder Gear Position: This parameter displays the mode the transfer case is currently in.

Encoder Return Voltage: This parameter displays the voltage measured by the transfer case shift control module at the encoder signal return. The scan tool displays a range of 0-7.5 volts.

Encoder Supply Voltage: This parameter displays the voltage measured by the transfer case shift control module at the 5 V reference circuit. The scan tool displays a range of 0-7.5 volts.

Front Axle Requested: This parameter displays Yes if the transfer case shift control module requests the front axle switch On. The scan tool displays Yes or No.

Front Axle Switch: This parameter displays the feedback states of the front propshaft. The scan tool displays Locked or Unlocked.

Front Propshaft Speed: This parameter displays the rotational speed of the front propshaft. The scan tool displays a range of 0-8,192 RPM.

Ing. Cycles Since Last Current DTC: This parameter displays how many ignition cycles have occurred since last current DTC was set. The scan tool displays a numeric value.

Mode Switch Return Voltage: This parameter displays the return voltage from the transfer case shift control switch. The scan tool displays a range of 0-5 volts.

Mode Switch Selected: This parameter displays the transfer case shift control switch button currently depressed by the driver.

Neutral Indicator Light: This parameter displays On when the transfer case shift control module commands the neutral indicator light On. The scan tool displays On or Off.

Rear Propshaft Speed: This parameter displays the rotational speed of the rear propshaft. The scan tool displays a range of 0-8,192 RPM.

Service 4WD Lamp: This parameter displays On if the transfer case shift control module commands the Service 4WD lamp, or message, On. The scan tool displays On or Off.

Slip Adapt PWM: This parameter displays the duty cycle applied to the transfer case encoder motor. The scan tool displays a range of 0-100 percent.

Total Slippage: This parameter displays the total slippage of both the front and rear propshafts. The scan tool displays a range of 0-8,192 RPM.

Transfer Case Lock: This parameter displays Enabled if the transfer case shift control module commands the transfer case motor brake On. The scan tool displays Enabled or Disabled.