Mercury MerCruiser ECM 555, Service Manual

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GENERAL INFORMATION
SERVICE MANUAL NUMBER 36
90-864573 FEBRUARY 2002 Page 1A-3
Abbreviations
amp Amperes in. hg Inches Of Mercury
BARO Barometric Pressure INJ Injector
Bat
Battery Positive Terminal, Bat-
tery or System Voltage
kPa Kilopascal
B+ Battery Positive Voltage KS Knock Sensor System
Bps Beeps kV Kilovolts
CAM Camshaft mA milliamperes
cond Condition MPR Main Power Relay
cont Continuous MAP Manifold Air Pressure
Crank Crankshaft MAT Manifold Air Temperature
CAN Control Area Network mohms Milliohms
CKT Circuit mSec Millisecond
CMP Camshaft Position Sensor N/C Normally Closed
Conn Connector N/O Normally Open
CPS Crankshaft Position Sensor OBD On-Board Diagnostic Test
Cyl Cylinder PCM Propulsion Control Module
DDT Digital Diagnostic Terminal RAM Random Access Memory
Deg Degrees REF HI Reference High
Diag Diagnostic REF LO Reference Low
DIS Distributorless Ignition System RFI Resistance Frequency Interval
DLC Data Link Connector ROM Read Only Memory
Dtc Diagnostic Trouble Code RPM Revolutions per Minute
DMM
DMT
DVOM
Digital Multimeter SW Switch
ECM Electronic Control Module TACH Tachometer
ECT Engine Coolant Temperature TERM Terminal
EFI Electronic Fuel Injector TPS Throttle Position Sensor
EMCT
Exhaust Manifold Coolant
Temperature
V Volts
EST Electronic Spark Timing VAC Vacuum
GND Ground VDC Volt Direct Current
IAC Idle Air Control VOA Volt/Ohm/Amp Meter
IGN Ignition WOT Wide Open Throttle