Fuel Pump: Testing and Inspection
On Vehicle InspectionCAUTION:
When fuel filler cap is removed in any procedure, work must be done in a well-ventilated area, keep away from any open flames and without smoking.
1) Remove filler cap and turn ON ignition switch. Then fuel pump operating sound be heard from fuel filler for about 3 seconds and stop. Be sure to reinstall fuel filler cap after checking.
If above check result is not satisfactory, advance to "Diagnostic Flow Chart B-1".
B-1 Fuel Pump Circuit Inspection
2) Fuel pressure should be felt at fuel return hose for 3 seconds after ignition switch ON.
If fuel pressure is not belt, advance to "Diagnostic Flow Chart B-3".
B-3 Fuel Pressure Check
Off Vehicle Inspection
Check fuel pump filter for evidence of dirt and contamination. If present, clean and check for presence of dirt in fuel tank.