Maximum Pressure and Continuity Tests

Fuel Pump Maximum Pressure Test

WARNING: Fuel line spills and leaks are dangerous. Fuel can ignite and cause serious injuries or death and damage. Fuel can also irritate skin and eyes. To prevent this, always complete the "Fuel Pressure Release Procedure".

Fuel Pressure Release

1. Disconnect the negative battery cable.

Fuel Pressure Gauge Installation:

2. Connect a fuel pressure gauge to the main fuel pipe and plug the outlet of the gauge as shown. (Install clamps as shown.)
3. Connect the negative battery cable.

DLC-1 Fuel Pump Relay Jumper Location:

4. Connect the data link connector terminals F/P and GND by using a jumper wire.
5. Turn the ignition switch to ON to operate the fuel pump.
6. Measure the pump maximum pressure.

Fuel pump maximum pressure: 500-630 kPa (72-92 psi)

7. Turn the ignition switch to OFF and disconnect the jumper wire.
8. If not as specified, replace the fuel pump.

Continuity Inspection
1 Disconnect the fuel tank unit connector.

Fuel Pump Testing:

2. Check for continuity between fuel tank unit connectors (A) and (D).
3. If there is none, replace the fuel pump.