GM Service Manual Online
For 1990-2009 cars only

The TIM Scan Tool Data Definitions contain a brief description of all the TIM scan tool parameters. This list is in alphanumeric order.

Auto Learn Mode Active: The scan tool displays Yes or No - The scan tool displays if TIM is currently in learn mode. The EBCM will be in learn mode after replacement or after the reset switch is activated.

LF Wheel Speed: The scan tool displays 0 255 km/h or 0 158 mph - The scan tool displays the actual speed of the left front wheel.

Low Tire Pressure: The scan tool displays Yes or No - The scan tool displays whether or not the tires should be checked for proper air pressure.

LR Wheel Speed: The scan tool displays 0 255 km/h or 0 158 mph - The scan tool displays the actual speed of the left rear wheel.

Monitor Mode 1: The scan tool displays Active or Inactive - TIM autolearn is partially complete and reduced tire pressure monitoring capability is available. Only a large pressure loss within a tire will set the TIM light during this mode.

Monitor Mode 2: The scan tool displays Active or Inactive - TIM autolearn is complete and full tire pressure monitoring capability is available during this mode.

RF Wheel Speed: The scan tool displays 0 255 km/h or 0 158 mph - The scan tool displays the actual speed of the right front wheel.

RR Wheel Speed: The scan tool displays 0 255 km/h or 0 158 mph - The scan tool displays the actual speed of the right rear wheel.

TIM Equipped: The scan tool displays Yes or No - The scan tool displays if vehicle is equipped with TIM or not.

TIM Failed: The scan tool displays Yes or No - The scan tool displays if ABS is disabled due to a malfunction.

TIM Reset Switch: The scan tool displays Pressed or Released - The scan tool displays if the tire inflation monitor reset switch is currently being depressed by the driver.

Vehicle Speed: The scan tool displays 0 255 km/h or 0 158 mph - The scan tool displays the vehicle speed.