Detonation Control System Indicator Light - Yamaha SXV70SJ Supplementary Service Manual

4. DETONATION CONTROL SYSTEM INDICATOR LIGHT

The detonation control system indicator light flashes to inform the rider that the detonation control sys-
tem has been activated. If a detonation is detected by the knock sensor, the system automatically ad-
justs the ignition timing for optimal firing, and the detonation control system indicator light flashes as
follows.
NOTE:
S If the detonation level increases, the detonation control system indicator light flash pattern changes
from pattern number 1 to pattern number 2. If excessive detonation levels continue, maximum engine
speed is reduced to protect the engine.
S Engine performance will decline according to the detonation level.
S If the carburetor settings are not appropriate for the operating conditions, detonations may occur.
After detonation stops, the engine protection control is deactivated, and the detonation control system
indicator light goes off.
1
2
ON Warning light ON
SELF-DIAGNOSIS SELF-DIAGNOSIS
OFF Warning light OFF
–63–
ELEC ELEC
s Time (second)