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The second indicator is the Check Gauges light. This bulb will illuminate when a
non-emissions related issue occurs. Items that can cause these codes are high or
low oil pressure and coolant temperature and various power relay operation,
system voltage etc. The lighting of this fault indicator would indicate to the operator
that the gauges for oil pressure and coolant temperature should be checked
immediately and action taken to eliminate engine damage. There are safeties in
the calibration that will reduce engine speed if the sensor output is out of the
normal range (low oil pressure when the engine is at rated speed for instance). If
the engine should turn off for no apparent reason check this lamp. This light will
clear on it’s own if the fault clears and the ignition switch is turned off then back on.
If this light turns off on it’s own, the issue will stay in memory for 40 warm up cycles
or until a technician clears it manually with a scan tool.
NOTE: The lamps will not flash the error codes. To retrieve and reset the
error codes a diagnostic scan tool is required. Some vessel manufacturers
are using CAN-BUS displays that can retrieve the error codes, but cannot
clear them. See the vessel manufacturers instructions to retrieve the error
codes with their device.
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