Fuel Pump (Low-pressure Side) Control System Inspection

If simulation function of M-MDS is used: 

1. Connect the M-MDS to the DLC-2.
2. Switch the ignition ON (engine off).
3. Select the FP PID. (See ON-BOARD DIAGNOSTIC TEST [SKYACTIV-G 2.5] .)
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. (See RELAY INSPECTION .)
   • If the fuel pump relay is normal, inspect the following:
     • Wiring harness and connectors (IG1 relay-Fuel pump relay-PCM terminal 2AQ)

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 (See RELAY INSPECTION .)
   • Wiring harness and connectors (IG1 relay-Fuel pump relay-PCM terminal 2AQ)