Fuel Injector Resistance Test; Circulation Pump Resistance Test; Lift Pump Pressure Test - BRP E250DHLSCS Service Manual

FUEL SYSTEM
FUEL SYSTEM TESTS

Fuel Injector Resistance Test

Disconnect the battery cables at the battery.
Use a digital multimeter to measure the injector
coil resistance.
Fuel Injector Coil Resistance
2 to 3 Ω @ 72°F (22°C)
Use a digital multimeter with appropriate adapter
leads to measure the injector circuit resistance.
Measure resistance between pin 2 of injector con-
nector and the appropriate pin location of EMM
J1-B connector. Refer to engine wiring diagram
for specific EMM J1-B connector pin location for
the injector circuit being tested.
172

Circulation Pump Resistance Test

Disconnect the battery cables at the battery.
Use a digital multimeter to measure the fuel pump
circuit and coil resistance.
006865

Lift Pump Pressure Test

Install a 0 to 15 psi (0 to 103 kPa) Fuel Pressure
Gauge, P/N 5006397 or equivalent, to the lower
fuel pressure test fitting.
1
1. Fuel pressure gauge
2. Test fitting
Prime the fuel system and check for leaks.
004342
START outboard and run at idle speed. Hold
gauge level with inlet fitting and monitor gauge for
pressure reading.
Pressure should stabilize and gauge must not
indicate less than 4 psi (27 kPa).
Fuel Pump Resistance
3 Ω @ 77°F (25°C)
004217
2
004587