LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Mercury >> 1993 >> Capri Base, Automatic >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Basic Testing >> Fuel System >> Fuel Pressure >> Fuel Pump Relay
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Fuel Pump Relay

Remove fuel pump relay (located near heater duct under carpet). Using a fused jumper wire, apply 12 volts to relay terminal "B." Connect terminal "A" to ground. See Fig 1 . Measure voltage between terminal "C" and ground, while individually grounding terminals "D" and "E". Verify voltage is as specified. See FUEL PUMP RELAY SPECIFICATIONS table. If voltage is not as specified, replace relay.

FUEL PUMP RELAY SPECIFICATIONS

Terminal "D" Terminal "E" Terminal "C" Voltage
Open Open Less Than One
Grounded Open Greater Than 10
Open Grounded Less Than 10
Grounded Grounded Greater Than 10
Fig 1: Fuel Pump Relay Terminal ID
G91I16434Courtesy of FORD MOTOR CO.