2017-08-30
47
1715054
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 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 6 Volts.
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.
Display has no keypad backlight.
Contact your Supra service center.