Scan Tool Data Definitions

WARNING: This page is about a different car, the 2005 GMC Yukon XL and 2005 GMC Yukon. However, it is still accessible from the selected car via links, so may be relevant.

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.

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.

Encoder Circuits A, B, C, and P: This parameter displays Off if a high voltage is detected at the circuit. The parameter displays On if the encoder motor grounds the circuit and pulls the voltage low. The encoder circuits allow the transfer case shift control module to determine what position the transfer case is in.

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

Encoder Supply Voltage: This parameter displays the voltage supplied to the encoder motor. The scan tool displays a range of 0-25 volts.

GM Part Number: This parameter displays the GM part number assigned to the module package: module, software, and calibrations. The scan tool displays a numeric value.

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.

Motor A High Side Driver: This parameter displays On when battery voltage is applied to the Motor A Circuit. The scan tool displays On or Off.

Motor A Low Side Driver: This parameter displays On when ground is applied to the Motor A Circuit. The scan tool displays On or Off.

Motor B High Side Driver: This parameter displays On when battery voltage is applied to the Motor B Circuit. The scan tool displays On or Off.

Motor B Low Side Driver: This parameter displays On when ground is applied to the Motor B Circuit. The scan tool displays On or Off.

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.

Software ID: This parameter displays a numeric value indicating which version of software is currently installed in the transfer case shift control module.