General Troubleshooting Guide - Supra Vision Control Owner's Manual

General Troubleshooting Guide

Display appears not to work or doesn't come ON.
1. Display could be in sleep mode. Touch a key on the keypad or touch the screen to
activate the display.
2. Check for loose connections at battery and display unit.
3. Check for reversed polarity on the power connections.
4. Verify battery has a minimum voltage of 8-9 Volts.
5. If a message appears on the 11-inch display of "Ignition is Off", turn off the battery switch
on the tower to shut down the system and begin the rebooting process.
Display resets or goes OFF when starting engine.
1. Check display supply wires are connected properly to battery.
2. Verify battery is charged properly.
3. Check battery for efficient starter current.
Display has no backlight.
Contact your Supra service center.
2023-11-30 62 2301122