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NG: REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to Next Step 9. INSPECT FUEL PUMP a. Inspect the fuel pump (see REMOVAL ). NG: REPLACE FUEL PUMP (See REMOVAL ) OK: Go to Next Step 10. CHECK HARNESS AND CONNECTOR (FUEL PUMP ECU - ECM AND BODY GROUND) a. Disconnect the R7 fuel pump ECU connector. b. Disconnect the A24 ECM connector. Fig. 309: Identifying R7 Fuel Pump ECU And A24 ECM Connector Terminals c. Measure the resistance according to the value (s) in the table below. Standard resistance RESISTANCE SPECIFIED CONDITIONS NG: REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to Next Step 11. REPLACE FUEL PUMP ECU Tester Connection Condition Specified Condition R7-1 (FPC) - A24-52 (FPC) Always Below 1 ohms R7-2 (DI) - A24-18 (DI) Always Below 1 ohms R7-3 (E) - Body ground Always Below 1 ohms R7-1 (FPC) or A24-52 (FPC) - Body ground Always 10 kohms or more R7-2 (DI) or A24-18 (DI) - Body ground Always 10 kohms or more
2009 Toyota Tundra 2009 ENGINE PERFORMANCE Engine Control System (3UR-FBE) - Tundra
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