Fuel Pump Relay

Fuel pump relay is located under hood on right inner fender well inside relay box. Remove relay from connector and test for continuity between terminals 1 and 3. See Fig 1 . Ensure no continuity is present. Test between terminals 1 and 2 for continuity. Ensure continuity is present.
Apply battery voltage between terminals 4 and 5. Ensure continuity is present between terminals 1 and 3. Ensure continuity is not present between terminals 1 and 2. Replace relay if defective.

Fig 1: Fuel Pump & Starter Relay Terminal ID

Courtesy of ISUZU MOTOR CO.