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Home >> Volvo >> 1994 >> 940 Base, 4D Sedan, AW71 >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Basic Diagnostic Procedures >> Fuel System >> Fuel Pressure >> Injection System (Fuel Pump) Relay (940)
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Injection System (Fuel Pump) Relay (940)

With ECU connector removed from ECU, ground ECU connector terminals No. 17 and 21. Pump relay should activate fuel pumps and pumps should start operating. Connect voltmeter between ground and terminal 87/2 in relay. See Figure. Battery voltage should be present. Disconnect ground leads from ECU terminals No. 17 and 21. Replace relay if faulty.