Install Jumper Wire (SST 09843-18020) between +B and FP terminals of data link connector. See Fig 1. Data link connector is located in engine compartment.
Turn ignition on. Listen for fuel pump operating sound and feel for pressure in fuel line near fuel filter. Turn ignition off. Remove jumper wire. If fuel pump operates, check fuel pressure. See FUEL PRESSURE .
If fuel pump does not operate, connect a jumper wire from positive battery terminal to FP terminal of data link connector. If fuel pump operates, EFI main relay, EFI No. 2 relay, circuit opening relay or fuel pump relay may be defective. For 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, open circuit between data link connector and fuel pump, or defective fuel pump ground. See appropriate wiring diagram in WIRING DIAGRAMS article.

Fig 1: Installing Jumper Wire In Data Link Connector

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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.

Safety Warning

Fuel Pump Operation