Fail-Safe System: Description

If there is no response from display and A/C auto amp., previous display is kept for 10 minutes. After 10 minutes, "-" is displayed. (Only when there is no response continuously for 10 minutes.)
If display and A/C auto amp. receives normal data within 10 minutes, normal operation will be recovered.
If display and A/C auto amp. receives normal data while "-" is being displayed, normal operation will be recovered.
If ignition switch is turned OFF within 10 minutes: Previously retained data is displayed when ignition switch is turned ON again. Then after 10 minutes, "-" is displayed.
If response is never received after battery is turned ON, no data is retained. Therefore nothing is displayed for 10 minutes.