Check Engine" Indicator (Efi Engines Only) - Indmar 5.7L Vortec Operator's Manual

Use caution when connecting the battery
cables. Improperly connecting the battery
cables or using the wrong battery type can
damage electrical components. These dam-
ages are not covered by your warranty.
"CHECK ENGINE" INDICATOR
(EFI ENGINES ONLY)
Some boats are equipped with a digital dash which dis-
plays the words "CHECK ENGINE," and some boats
are equipped with a Check Engine light. This alerts you
when the ECM (Engine Control Module) detects a possi-
ble engine problem. If the indicator goes on, return to
dealer for service.
CHECK
ENGINE
Figure 4.5 – Typical Check Engine Light
Indmar Marine Engines
INDM-A018
If any of the following conditions is noted:
• Low Oil Pressure
• High Coolant Temperature
• High Transmission Oil Temperature
EFI engines may enter a Power Reduction mode. Power
reduction limits the engine speed to a "safe maneuver-
ing" speed of about 2000 RPM. This mode is intended to
allow the driver to get out of harm's way and to reach
safe harbor for engine service.
If the check engine indicator should go on, or if the
engine enters the Power Reduction mode, you should
have your dealer check the engine as soon as possible.
Schedule engine service at once when this
light is illuminated. Failure to have your
engine serviced when a check engine light
signal is given, may cause damage to your
engine or your emissions system.
The ECM also provides for a tapered engine RPM reduc-
tion if engine coolant temperature approaches the high
operating limit. If the coolant temperature exceeds 176° F
(80° C), the engine RPM is gradually reduced until a safe
temperature is reached. If the engine RPM should
decrease due to high coolant temperature, stop the
engine and inspect the raw water intake, sea cock and
sea strainer (if equipped) and hoses for blockage or prob-
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