208
OILING SYSTEM
OILING SYSTEM TESTS
Oil Injection Pump Voltage Test
Check voltage at pin 1 (white/red wire) of oil tank
electrical connector.
Acceptable voltage readings:
• Key switch ON: approximately 30 V
• Outboard running: 55 V
Results:
• If voltage is not within range, refer to Oil Injec-
tion Pump Circuit Resistance Test on p. 208.
• No voltage reading, refer to System Voltage
Test on p. 118.
Monitor the voltage on the oil injector circuit at
pin 2 (blue wire) of oil tank connector with out-
board running at 1500 RPM.
Use an appropriate test probe and a digital multi-
meter calibrated to a scale that reads 55 V (DC).
Connect positive meter lead to pin 2 and negative
meter lead to ground.
Voltage reading should be approximately 55 V,
and drop approximately 5 V as EMM actuates oil
injection pump.
Oil Injection Pump Circuit
Resistance Test
IMPORTANT: The complete oil injection pump
electrical circuit includes EMM alternator output,
the engine wire harness, the injection pump wind-
ing and connectors, and the oil injector control cir-
cuit of the EMM. Check continuity of all wiring and
connections.
Disconnect the battery cables at the battery.
Use an appropriate test probe to make a connec-
tion to pin 1 of the oil injection pump connector.
Calibrate ohmmeter to the LOW OHMS scale and
measure the resistance between pin 23 of the
EMM J1-B connector and pin 1 of oil injection
pump connector.
• An infinite reading (∞) indicates an open circuit.
Isolate the faulty wiring, connection, or injection
pump winding. Repair faulty wiring or replace
faulty component and retest.
• For a higher than expected reading, test resis-
tance of the injection pump. If injection pump
resistance reading is approximately 2-3 Ω,
injection pump winding is good. Isolate faulty
component. Repair faulty wiring or replace
faulty component and retest.
1. Oil injection pump connector (pin 2) 005442
1
Oil Injection Pump Circuit Resistance
2 to 3 Ω
1. EMM J1-B connector (pin 23)
2. Oil injection pump connector (pin 1)
005443
1
2
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