BRP Evinrude E-TEC G2 Service Manual page 166

Fuel System
Fuel System Tests
Use a digital multimeter to measure the resistance
of the fuel pump and vapor separator assembly
electrical connector and engine ground.
Fuel Pump Ground Circuit Resistance
Wire
BLACK
Results:
∞
An infinite reading (
Isolate the faulty component. Check wiring and
connections. Repair or replace faulty wiring.
Fuel Circulation Pump Resistance Test
Disconnect the battery cables at the battery.
Remove the electrical connector from the fuel
pump and vapor separator assembly.
Use a digital multimeter with appropriate test
probe leads to measure the fuel pump coil resis-
tance.
Connect the black meter lead to the black wire,
connect the red meter lead to the blue wire.
Fuel Circulation Pump Resistance
<10 Ω @ 77°F (25°C)
Fuel Circulation Pump Circuit Test
Remove the electrical connector from the fuel
pump and vapor separator assembly.
Use the diode test function of a digital multimeter
with appropriate test probe leads to check the sig-
nal circuit.
166
Pin Result
< 1 Ω
2
) indicates an open circuit.
009204
Connect the negative meter lead to the wire listed
in the table, connect the positive meter lead to
engine ground.
Fuel Circulation Pump Circuit Diode Test
Wire
BROWN
Results:
∞
•
No reading (OL or
•
A reading of zero (0) indicates an short circuit.
Isolate the faulty component. Check wiring and
connections. Repair or replace faulty wiring.
Use a digital multimeter with appropriate test
probe leads to measure the resistance of the fuel
pump and vapor separator ground circuit.
Connect the positive meter lead to the engine har-
ness connector wire listed in the table. Connect
the negative meter lead to engine ground.
Fuel Circulation Pump
Ground Circuit Resistance
Wire
BLACK
Results: An infinite reading (
circuit. Isolate the faulty component. Check wiring
and connections. Repair or replace faulty wiring.
Fuel Level Switch Circuit Test
Remove the electrical connector from the fuel
pump and vapor separator assembly.
Use the diode test function of a digital multimeter
with appropriate test probe leads to check the sig-
nal circuit.
Connect the negative meter lead to the wire listed
in the table, connect the positive meter lead to
engine ground.
Fuel Level Switch Circuit Diode Test
Wire
BROWN/GREEN
BROWN/ORANGE
Results:
∞
•
No reading (OL or
•
A reading of zero (0) indicates an short circuit.
Pin Result
approximately
1
0.5 VDC
) indicates an open circuit.
Pin Result
< 1 Ω
2
∞
) indicates an open
Pin Result
6
1.5 to 3.0 VDC
5
) indicates an open circuit.