The list below contains links to various output test tables:
MEFI 1 Output Tests (MerCruiser)
MEFI 1 Output Tests (Other)
MEFI 2 Output Tests (MerCruiser)
MEFI 2 Output Tests (Other)
MEFI 3 Output Tests
MEFI 4 Output Tests
PCM-555 Output Tests
MEFI 1 Output Tests (MerCruiser)
|
ECM Pin #
|
|
Buzzer Circuit Output 1 |
J2-11 |
|
Buzzer Circuit Output 2 |
J2-27 |
|
Fuel Pump Output |
J2-9 |
|
IAC Motor Reset |
|
MEFI 1 Output Tests (Other
Makes)
|
ECM Pin #
|
|
Over Temp Lamp |
J2-11 |
|
Buzzer Output |
J2-11 |
|
I/O Fluid Level Lamp |
J2-26 |
|
Oil Pressure Lamp |
J2-27 |
|
Oil Level Lamp |
J2-30 |
|
Check Engine Lamp |
J2-31 |
|
Fuel Pump Output |
J2-9 |
|
IAC Motor Reset |
|
MEFI 2 Output Tests (MerCruiser)
(MerCruiser models using GM MEFI II ECM Only)
|
ECM Pin #
|
|
Buzzer Circuit Output 1 |
J2-11* |
|
Buzzer Circuit Output 2 |
J2-26 |
|
Fuel Pump Output |
J2-9 |
|
IAC Motor Reset |
|
MEFI 2 Output Tests (Other
Makes)
|
ECM Pin #
|
|
Buzzer Circuit Output 1 |
J2-11 |
|
Buzzer Circuit Output 2 |
J2-27 |
|
Fuel Pump Output |
J2-9 |
|
IAC Motor Reset |
|
MEFI 3 Output Tests
|
ECM Pin #
|
|
General Warning #1 Output |
J1-21 |
|
Buzzer Output |
J1-26 |
|
RPM Controlled Output |
J1-8 |
|
Oil Level Lamp |
J1-25 |
|
Check Gauges Lamp |
J1-7 |
|
Check Engine Lamp |
J1-9 |
|
General Warning #2 Output |
J1-22 |
|
Fuel Pump Output |
J1-23 |
|
IAC Motor Reset |
|
MEFI 4 Output Tests
|
ECM Pin #
|
|
General Warning #1 Output |
J1-21 |
|
Buzzer Output |
J1-26 |
|
RPM Controlled Output |
J1-8 |
|
Oil Level Lamp |
J1-25 |
|
Check Gauges Lamp |
J1-7 |
|
Check Engine Lamp |
J1-9 |
|
General Warning #2 Output |
J1-22 |
|
Fuel Pump Output |
J1-23 |
|
Power Balance Test |
|
|
IAC Motor Reset |
|
