Fuel Pump: Inspection

Using an ohmmeter, measure the resistance between the terminals.

Resistance: 0.2 - 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

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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.
   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 do switching at the battery side.

   If operation is not as specified, replace the fuel pump and/or read wire.

3. Disconnect the lead wire to the fuel pump.

Fig 2: Inspecting Fuel Pump Operation

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002