Test Procedure
-- Perform a preliminary check to verify the customers complaint. Refer to PRELIMINARY CHECK .
Start diagnosis
-- Remove the fuel filler cap from fuel filler tube.
-- Remove rear seat bench. Refer to the Repair Information.
-- Remove the floor sealing cover.
-- Disconnect the electrical harness connector from the fuel delivery unit.
-- Connect a switched remote control (jumper) to terminal of the fuel delivery unit and to vehicle Battery (+).
-- Connect a jumper wire from terminal of the fuel delivery unit to vehicle Ground.
Fuel system is under pressure! Before opening the system, place rags around the connection area. Then release the pressure by carefully loosening the connection.
-- Disconnect the fuel return line by pressing release buttons.
-- Connect a fuel line from the fuel pressure test set to the disconnected fuel return line and hold it in the measuring container.
-- Press the switch on the remote control (jumper) and operate the fuel pump for 15 seconds.
-- Compare quantity of fuel delivered with minimum delivery rate in the diagram (cm3 /30 sec.).
Voltage at the fuel pump with engine stopped and fuel pump running is approx. 2 volts less than battery voltage.
If minimum delivery quantity is not obtained, the following malfunctions may be present:
- Fuel lines pinched.
- Fuel filter plugged.
- Fuel pump faulty.
-- If necessary, repair any pinched or plugged lines.
If the filter is restricted;
-- Replace the fuel filter. Refer to the Repair Information.
If the fuel pump is faulty;
-- Replace the fuel pump. Refer to the Repair Information.
Assembly is performed in reverse order of removal. Note the following:
-- Install the rear seat bench. Refer to the Repair Information.