Checking Fuel Pump Operation Using Data Link Connector No. 1

Install Jumper Wire (SST 09843-18020) between +B and FP terminals of data link connector No. 1. See Fig 1. Data link connector No. 1 is located at passenger's side rear corner of firewall in the 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 No. 1. If fuel pump operates, EFI main relay, EFI No. 2 relay or fuel pump Electronic Control Unit (ECU) 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, open circuit between data link connector No. 1 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 No. 1