Operating Instructions; Engine Alarm System - PCM HO303 MPI Owner's Operation And Maintenance Manual

OPERATING INSTRUCTIONS - 5

ENGINE ALARM SYSTEM

The PCM engine electronic system is programmed to
control the engine alarm system. This system utilizes
an indicator lamp ("MIL" or "Check Engine") and/or an
optional audible alarm to warn the operator of possible
engine problems.
The alarm circuit has a "self" checking feature
programmed into the system. This feature will
momentarily light the "MIL", and if equipped, sound the
alarm for two short pulses upon initial start-up of the
engine.
If the "MIL" lights and/or the alarm sounds during
operation, observe the instrument panel readings for
the possible source of the malfunction, such as low oil
pressure or excessive engine temperature readings.
Other conditions that may sound the warning buzzer are
a transmission over-temperature warning (if equipped),
exhaust gas over-temperature warning (if equipped), and
for an electronic throttle malfunction.
ENGINE ALARM SYSTEM (CES ENGINES)
The PCM engine electronic system is programmed to
control the engine alarm system. Your CES Engine
Alarm System may utilize up to three (3) alarm circuits to
warn you of a potential problem with your engine.
The Malfunction Indicator Lamp (MIL) is used for
notifi cation of any emissions-related fault. This is an
amber indicator lamp, that may be labeled 'Service
Soon' or with the ISO icon, to warn the operator of
possible engine problems.
ISO Icon
The Check Gauges Lamp (CGL) is used for notifi cation
of any non-emissions-related fault. This is a red
indicator lamp to warn the operator of possible
engine problems such as low oil pressure or an over
temperature condition.
The Buzzer is an audible notifi cation to the operator, that
may be used in conjuction with the MIL and/or CGL.
For events such as an engine over-temperature
condition, low oil pressure, etc., the Buzzer will sound
for 1/2 second ON, 1/4 second OFF, continuously as an
audible warning. For emissions related faults (MIL), the
buzzer will initially sound for 5 seconds, then will sound
for 1/2 second ON once per minute thereafter. In the
event of a MIL circuit failure, MIL circuit functions will be
transferred to the Buzzer circuit.
16
The alarm circuit has a "self" checking feature
programmed into the system. This feature will light the
"MIL" and "CGL" lamps, and also sound the buzzer for
two short pulses upon initial start-up of the engine.
NOTE: If, during Key ON, engine OFF, either the MIL
or CGL lamps are fl ashing, this indicates that a stored
trouble code or engine fault is recorded in the ECM.
Refer to your dealer for proper diagnosis.
If the "MIL" or "CGL" lights and the alarm sounds during
operation, observe the instrument panel readings for
the possible source of the malfunction, such as low oil
pressure or excessive engine temperature readings.
Other conditions that may sound the warning buzzer are
a transmission over-temperature warning (if equipped),
exhaust manifold water over-temperature warning , and
for an electronic throttle malfunction.
IMPORTANT: A failure involving the Electronic Throttle
may result in Idle only operation of the engine. The
operator must obtain service by an authorized PCM
Premier dealer to determine the exact cause of this
malfunction as soon as possible.
In most cases, when the "MIL" or "CGL" lights are on, the
engine may lose some performance and/or effi ciency,
but remain running adequately. Also, the lights may go
out or become intermittent, but a trouble code will be
logged for future diagnosis.
NOTE: If the MIL is blinking during Key ON, Engine OFF
situation, that means there is a stored diagnostic trouble
code.
In any case, the operator must obtain service by an
authorized PCM Premier dealer to determine the exact
cause of the malfunction.
NOTICE: Some boat builders may install their own
alarm system. It is recommended that the boat owner
check with his or her boat dealer for an explanation of
the particular alarm system upon initial delivery.
L510010-11