Fuel Pump Relay: Testing and Inspection

CIRCUIT DIAGRAM





USING SCAN TOOL














HARNESS INSPECTION PROCEDURES

MULTI PORT FUEL INJECTION RELAY INSPECTION





1. Remove the multi port fuel injection relay.
2. Inspect the continuity between the multiport fuel injection relay terminals.








3. Use jumper wires and connect multiport fuel injection relay terminal (7) to the battery (+) terminal and terminal (6) to the battery (-) terminal.

Caution: Be very careful when connecting the jumper wires because the relay will be damaged if a mistake is made with the contact terminals.





4. With the battery e terminal jumper wire connected and disconnected, check the continuity between multiport fuel injection relay terminals (1)-(4).
5. Use jumper wires to connect multi port fuel injection relay terminal (2) to the battery (+) terminal and terminal (5) to the battery (-) terminal.
6. With the battery (-) terminal jumper wire connected and disconnected, check the continuity between multiport fuel injection relay terminals (1)-(4).








7. Use jumper wires to connect multi port fuel injection relay terminal (8) to the battery (+) terminal and terminal (6) to the battery (-) terminal.








8. With the battery (-) terminal jumper wire connected and disconnected, check the continuity between multi port fuel injection relay terminals (2)-(4).
9. Replace the multiport fuel injection relay if faulty.