Scan Tool Data Definitions - Heads Up Display (HUD)
HIGH BEAM SWITCH: The scan tool displays On/Off. The state of the headlamp high beam switch.LT. TURNING SIGNAL SW.: The scan tool displays On/Off. The state of the left turn signal switch.
RT. TURNING SIGNAL SW.: The scan tool displays On/Off. The state of the right turn signal switch.
VF DIM: The scan tool displays 0-19 volts. The HUD monitors the VF dimming signal circuit of the HUD switch.