Fuel Pump Relay

Remove relay from vehicle. Connect battery voltage to terminal "C". See Fig 1 . Ground terminal "D". Check continuity between terminals "A" and "B". Continuity should exists with power applied. Continuity should not exist with power removed.

NOTE: For additional testing, see CIRCUIT TEST J in TESTS W/CODES article in the ENGINE PERFORMANCE section.

Fig 1: Testing EEC Power & Fuel Pump Relays (B4000 & Navajo)

Courtesy of MAZDA MOTORS CORP.