Fuel Pump: Inspection

INSPECT FUEL PUMP
1. Inspect the fuel pump resistance.
  1. Using an ohmmeter, measure the resistance between terminals 1 and 2.
    Standard resistance::
    
    0.2 to 3.0 Ω at 20°C (68°F)
    
    If the resistance is not as specified, replace the fuel pump.
    
    Fig 1: Measuring Resistance Between Terminals 1 & 2 Using Ohmmeter
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Inspect fuel pump operation.
  1. Connect the lead wire to the fuel pump.
  2. Connect the positive (+) lead from the battery to terminal 1 of the connector, and the negative (-) lead to terminal 2. Check that the fuel pump operates.
    
    Fig 2: Connecting (+) Lead From Battery To Terminal 1 Of Connector & (-) Lead To Terminal 2
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    NOTE:
    These tests must be done quickly (within 10 seconds) to prevent the coil from burning out.
    
    Keep the fuel pump as far away from the battery as possible.
    
    Always switch on the battery side.
    If the fuel pump does not operate, replace the fuel pump and/or lead wire.
  3. Disconnect the lead wire from the fuel pump.