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Fuel Pump

Disconnect "fuel level sensor unit and fuel pump" harness connector.
Check resistance between "fuel level sensor unit and fuel pump" terminals 1 and 3.

Fig 1: Checking Resistance Between Fuel Level Sensor Unit And Fuel Pump Terminals 1 And 3
Courtesy of SUZUKI OF AMERICA CORP.

Resistance: Approximately 0.2 - 5.0Ω [at 25°C (77°F)]