Checking Fuel Pump Operation Using Toyota Hand-Held Tester (Camry)

Connect hand-held tester to data link connector No. 3 at driver's side of instrument panel. See Figure. Turn ignition on. DO NOT start engine.
Turn hand-held tester on. Select ACTIVE TEST MODE on hand-held tester. Using hand-held tester manufacturer's instructions, operate fuel pump. Listen for fuel pump operating sound and feel for fuel pressure in fuel inlet line at end of fuel rail. Turn ignition off. Remove hand-held tester. If fuel pump operates, check fuel pressure. See FUEL PRESSURE .
If fuel pump does not operate, EFI main relay or circuit opening relay may be defective. For relay application and explanation of relay operation, see FUEL PUMP CONTROL CIRCUIT . For testing of EFI main relay or circuit opening relay, see appropriate relay under MODULES, MOTORS, RELAYS & SOLENOIDS in SYSTEM & COMPONENT TESTING - 4-CYLINDER article.
If relays are okay, check for defective fuel pump. See CHECKING FUEL PUMP OPERATION BY APPLYING BATTERY VOLTAGE TO FUEL PUMP (CAMRY) procedure. If fuel pump operates properly, Engine Control Module (ECM) may be defective.
NOTE: For additional testing information for fuel pump control circuit, see FUEL PUMP CONTROL CIRCUIT under COMPUTERIZED ENGINE CONTROLS in SYSTEM & COMPONENT TESTING - 4-CYLINDER article.