Subaru Workshop Service and Repair Manuals

Main Relay (Computer/Fuel System): Testing and Inspection
Fuel Pump Relay

CHECKING FUEL PUMP POWER SUPPLY

 Fuel Pump Circuit Diagram

 Fuel Pump Circuit Connectors

FUEL PUMP CIRCUIT

1. Check operating sound of Fuel Pump.

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Make sure that Fuel Pump is in operation for two seconds when turning Ignition Switch to "ON".
[CHECK]:Does Fuel Pump produce operating sound?
[YES]:

Check Fuel Injector circuit.

[NO]:

Go to step 2.