Fuel Pump Control Circuit: Prius

WARNING: This page does not describe the selected car, but rather 11 other vehicles, including the 2003 Toyota Tacoma, 2003 Toyota RAV4, 2003 Toyota Prius, 2003 Toyota Matrix, and 2003 Toyota MR2. However, it is still accessible from the selected car via links, so may be relevant.

WARNING: On Prius, read service precautions before proceeding with service procedure. See SERVICE PRECAUTIONS .

NOTE: Manufacturer does not supply circuit diagram for fuel pump control circuit.

For fuel pump control circuit inspection and wiring diagram, see Fig 1-Fig 5 . Before replacing ECM, check ECM connectors and ground circuits. See ENGINE CONTROL MODULE POWER & GROUND CIRCUITS .

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

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Fig 2: Fuel Pump Control Circuit Inspection Using Toyota Hand-Held Tester - Steps 1-4 (Prius)

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Fig 3: Fuel Pump Control Circuit Inspection Using Toyota Hand-Held Tester - Step 4 Cont. & Steps 5-6 (Prius)

Fig 4: Fuel Pump Control Circuit Inspection Using OBD II Scan Tool - Steps 1-3 (Prius)

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