Fuel Pump: Inspection

INSPECT FUEL PUMP ASSEMBLY
1. Check the resistance.
  1. Using an ohmmeter, measure the resistance between the terminals.
    Resistance: 0.2 to 3.0 Ω at 20°C (68°F)
2. Check the operation.
  1. Apply battery voltage to both terminals. Check that the pump operates.
    NOTE:
    These tests must be performed quickly (within 10 seconds) to prevent damage to the pump.
    
    Keep the fuel pump as far away from the battery as possible.
    
    Always do the switching at the battery side.
    
    Fig 1: Measuring Resistance Between Terminals Using Ohmmeter
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