175
OILING SYSTEM
OILING SYSTEM TESTS
8
Cylinder Oil Pump Voltage Tests
The EMM controls the pu mp by providing grou nd
through pin 4 (blue/red wire) of the J1-A connector
and pin A (blue/red wire) of the oil pump connec-
tor.
Use an appropriate test pro be and a digital multi-
meter calibrated to a scale that reads 12 V (DC).
Connect negative meter lead to ground.
Connect p ositive me ter le ad to pin A (blue/red
wire) of oil injection pump electrical connector.
Turn the key swit ch to th e ON position. Observe
voltage at pin A.
• Voltage at pin A should be approximately 12 V.
Use the Cylinder Oiler Test fu nction of Evinrude
Diagnostic software Static Test screen to activa te
the cylinder oil pump.
• Voltage at pin A should vary (drop), as the oil
pump cycles.
Check the control signal while the Oil Injector test
is running. Set th e digital multimeter to the Hertz
(Hz) scale.
• Meter should read approximately 2 Hz.
Results:
• If volt age and con trol signal readings (Hz) at
pin A are within range, the EMM and wiring a re
not at fault.
• If voltage at pin A is not within range, check volt-
age at pin B (re d/yellow wire) o f the oil pump
electrical connector.
Connect p ositive me ter lead t o pin B (red/ yellow
wire) of oil injection pump electrical con nector.
Observe voltage at pin B.
• The volt age a t pin B sh ould be approximately
12 V.
Start the engine. Observe voltage at pin B.
• The volt age a t pin B sh ould be approximately
12 V.
• If voltage at pin B is within range, refer to Cylin-
der Oil Pump Resistance Test on p. 176.
• No volt age reading at pin B, che ck continuity
between pin B of oil pump electrical co nnector
and pin 24 of EMM J1-B connector.
Acceptable Cylinder Oil Pump
Test Readings
Key switch ON approximately 12 VDC
Control signal approximately 2 Hz
Engine running approximately 12 VDC
1. Oil injection pump connector 008445
Static Test Screen
1. Cylinder oiler test
008569
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