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.
On-Vehicle Inspection
- CHECK FUEL PUMP OPERATIONΒ
- Connect a TOYOTA hand-held tester or OBD II scan tool to the DLC3.
- Turn the ignition switch ON, and press the TOYOTA hand-held tester or OBD II scan tool main switch ON.NOTE: Do not start the engine.
- Select the ACTIVE TEST mode on the TOYOTA hand-held tester or OBD II scan tool.
- Please refer to the TOYOTA hand-held tester or OBD II scan tool operator's manual for further details.
- If you have no TOYOTA hand-held tester or OBD II scan tool, connect the positive (+) and negative (-) leads from the battery to the fuel pump connector. (See step Β 3)
- Disconnect the fuel return hose from the clamp on the V-bank cover.
- Remove the 2 bolts, nuts and V-bank cover.
- Check that the pulsation damper screw pop up when the fuel pump operates.
If operation is not as specified, check following parts:
- Fusible link
- Fuses
- EFI main relay
- Fuel pump
- ECM
- Wiring connections
- Turn the ignition switch OFF.
- Disconnect the TOYOTA hand-held tester or OBD II scan tool from the DLC3.
Use the Manual With the Right Hardware
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- β’ You smell fuel, burning insulation, or see smoke.
- β’ Brakes feel soft, pull hard to one side, or make grinding noises.
- β’ The engine overheats, stalls repeatedly, or misfires under load.
- β’ You are missing required tools, torque specs, or safe lifting equipment.
- β’ You are not confident in the next step or safety outcome.
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