Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSTOYOTA1995PREVIA LE, 2TZ-FE, AWDREPAIR AND DIAGNOSISENGINE PERFORMANCESYSTEMENGINE CONTROLS - BASIC TESTINGFUEL SYSTEMFUEL PUMP OPERATIONCHECKING FUEL PUMP OPERATION USING SCAN TESTER (SUPERCHARGED)
1995 Toyota Previa LE, 2TZ-FE, AWD
Checking Fuel Pump Operation Using Scan Tester (Supercharged)
1995 Toyota Previa LE, 2TZ-FE, AWDSECTION Checking Fuel Pump Operation Using Scan Tester (Supercharged)
- Install scan tester on data link connector No. 3. See Fig 1. Turn ignition on. DO NOT start engine.
- Using scan tester manufacturer's instructions, activate electric fuel pump. Listen for fuel pump operating sound and feel for pressure in fuel line near fuel filter. Turn ignition off. Remove scan tester. If fuel pump operates, check fuel pressure. See FUEL PRESSURE .
- If fuel pump does not operate, EFI main relay, circuit opening relay or fuel pump relay (if used) may be defective. For relay application and explanation of relay operation, see FUEL PUMP CONTROL CIRCUIT .
- If relays are okay, check wiring circuit and fuses. If fuel pump does not operate, check for defective fuel pump or defective fuel pump ground. See wiring diagram in the WIRING DIAGRAMS article.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.