Fuel Pump Control System Inspection

If simulation function of M-MDS is used: 

1. Connect the M-MDS to the DLC-2.
2. Turn the ignition switch to the ON position.
3. Select the FP PID.
4. Turn the fuel pump relay from off to on and inspect if the operation sound of the fuel pump relay is heard.
   • If no operation sound is heard, inspect the fuel pump relay.
   • If the fuel pump relay is normal, inspect the following:
     • Wiring harness and connectors (Main relay - fuel pump relay - PCM terminal 4Q)

If simulation function of M-MDS is not used: 

1. Crank the engine and verify that the fuel pump relay operation sound is heard.
2. If the operation sound is not heard, inspect the following:
   • Fuel pump relay
   • Wiring harness and connectors (Main relay - fuel pump relay - PCM terminal 4Q)