Fuel Pump: Testing and Inspection

ON-VEHICLE INSPECTION




1. Remove filler cap and turn ON ignition switch (2). Then fuel pump operating sound be heard from fuel filler (1) 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 TABLE B-1" Computers/Testing/Non-Trouble Code Diagnostic Procedures.




2. Fuel pressure should be felt at fuel return hose for 3 seconds after ignition switch ON.
If fuel pressure is not felt, advance to "DIAGNOSTIC FLOW TABLE B-3" in Computers/Testing/Non-Trouble Code Diagnostic Procedures.

INSPECTION
Check fuel pump filter for evidence of dirt and contamination. If present, clean and check for presence of dirt in fuel tank.