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FUEL PUMP CIRCUIT EC-1727 [VG33ER] C D E F G H I J K L M A EC Specification data are reference values and are measured between each terminal and ground. CAUTION: Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in dam- Diagnostic Procedure UBS00E2X 1. CHECK OVERALL FUNCTION 1. Turn ignition switch ON. 2. Pinch fuel feed hose with fingers. OK or NG OK >> INSPECTION END. NG >> GO TO 2. 2. CHECK FUEL PUMP RELAY POWER SUPPLY CIRCUIT 1. Turn ignition switch OFF. 2. Disconnect fuel pump relay. 3. Turn ignition switch ON. 4. Check voltage between terminals 2, 5 and ground with CON- OK or NG OK >> GO TO 4. NG >> GO TO 3. TER- MINAL NO. WIRE COLOR ITEM CONDITION DATA (DC Voltage) 11 W/R Fuel pump relay [Ignition switch: ON] ● For a few seconds after turning ignition switch ON [Engine is running] 0 - 1V [Ignition switch: ON] ● A few seconds after turning ignition switch ON BATTERY VOLTAGE BBIA0422E SEF349V Voltage: Battery voltage SEF674W |