4 - O
PERATION
28
90-8M0114811 JANUARY 2016
I
NSTRUMENTATION
It is important to monitor critical engine and boat functions while the
boat is in operation.
Mercury Racing requires that the following critical engine functions be
monitored:
•
Oil pressure
•
Engine RPM
•
Oil temperature
•
Water temperature
•
System voltage
•
Guardian fault messages
W
ARNING
S
YSTEM
The engine's warning system includes an audible alert consisting of a
horn located in the helm harness, and the Engine Guardian system.
Do not attempt to alter or disable the warning system in any way.
E
NGINE
G
UARDIAN
S
YSTEM
The Engine Guardian system monitors sensors on the engine for
early indications of problems. If a sensor indicates a fault, the system
responds to the problem by sounding the horn and, depending on the
type of fault, may reduce engine power to provide engine protection.
Refer to the VesselView manual to display the details. When the key
switch is turned "ON," the warning horn beeps once to verify horn
operation.
F
AULT
T
YPE
AND
R
ELATED
W
ARNING
S
IGNAL
If there are two stages for a warning fault, Stage 1 occurs first. If a
fault remains active, Stage 2 becomes active. If multiple faults are
active, the operator is warned of the more severe fault first. If another
fault with the same severity occurs during Stage 2, the horn will return
to Stage 1 signaling. Monitor the VesselView for warning messages.
•
Caution: 1 second on and 1 second off for 6 cycles
•
OBD‑M Stage 1: 5 seconds on 1 cycle followed by 60 seconds
off.
•
OBD‑M Stage 2: 0.5 seconds on and 0.5 seconds off for 1 cycle
followed by 60 seconds off.
•
Severe Stage 1: 6 seconds on and 6 seconds off for 2 cycles
followed by 59 seconds off.
•
Severe Stage 2: 0.5 seconds on and 0.5 seconds off for 2
cycles followed by 59 seconds off.
•
To stop the warning horn, turn off the engine. If the horn
continues to sound on restart, the system detected a fault
again. See your Mercury Marine dealer to correct the problem
as soon as possible.
•
If the beeping does not reoccur, the problem does not need
immediate attention but will require you to see your authorized
Mercury Marine dealer to diagnose and clear the fault.
If the propulsion control module (PCM) detects a fault signal from an
engine sensor, it records a fault code. A computer diagnostic system
(CDS) is required to extract specific problem codes from the PCM.
C
ALIFORNIA
E
NGINES
In addition to the aforementioned procedure used to clear active
faults, the California Air Resources Board (C.A.R.B.), requires a
special clearing procedure for certain warning faults. These faults are:
•
MAPR_TPS1Rationality and TPS2
•
TPS1_ETC_NoAdapt, TPS2, TPS3, TPS4
•
TPS1_RangeLow, TPS2, TPS3, TPS4