Fuel Pump Control Circuit: Sequoia

For fuel pump control circuit inspection and wiring diagram, see Fig 1-Fig 7 . To check fuel pump relay, see FUEL PUMP RELAY under MODULES, MOTORS, RELAYS & SOLENOIDS. To check fuel pump operation, see FUEL DELIVERY under FUEL SYSTEMS. To check circuit opening relay, see CIRCUIT OPENING RELAY under MODULES, MOTORS, RELAYS & SOLENOIDS. For circuit identification, see ENGINE PERFORMANCE in appropriate SYSTEM WIRING DIAGRAMS article in ELECTRICAL. To check fuel pump resistor operation, see FUEL DELIVERY under FUEL SYSTEMS.

Fig 1: Fuel Pump Control Circuit Description & Diagram (Sequoia)

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Fig 2: Fuel Pump Control Circuit Inspection Using Hand-Held Tester - Steps 1-3 (Sequoia)

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Fig 3: Fuel Pump Control Circuit Inspection Using Hand-Held Tester - Steps 4-7 (Sequoia)

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Fig 4: Fuel Pump Control Circuit Inspection Using Hand-Held Tester - Step 8; Using OBD II Scan Tool - Steps 1-3 (Sequoia)

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Fig 5: Fuel Pump Control Circuit Inspection Using OBD II Scan Tool - Steps 4-6 (Sequoia)

Fig 6: Fuel Pump Control Circuit Inspection Using OBD II Scan Tool - Step 7 (Sequoia)

Fig 7: Fuel Pump Control Wiring Diagram (Sequoia)