4.
IS THE FUEL PUMP REALY ON ?
YES
a.
Make sure there is no the DTC in the diagnostic trouble codes menu
NO
a.
Recheck the fuse and the fuel pump relay
b.
Recheck the wiring harness
c.
Go to step 5
Connect the scan tool to the data link connector(DLC) and trun the ignition switch ON.
Go to the actuation test for driving the fuel pump relay.
Press on the START key
IS THE FUEL PUMP REALY ON ?
YES
Make sure there is no the DTC in the diagnostic trouble codes menu
NO
Recheck the fuse and the fuel pump relay
Recheck the wiring harness
Go to step 5
Connect the LED lamp at the fuel pum relay terminal 3 after disconnecting the fuel pump realy.
Check the ground condition with the LED lamp when pressing on the START key.
IS THERE LED GREEN LAMP(GROUND) LIGHTED ?
YES
Make sure there is no the DTC in the diagnostic trouble codes menu
NO
Recheck open or short in the wire between the fuel pump relay terminal 3 and the ECM terminal 24/C230-1
Go to step 8
Check the ground condition with the LED lamp at the ECM terminal 24/C230-1 directly.
IS THERE LED GREEN LAMP(GROUND) LIGHTED ?
YES
Recheck open or short in the wire between the fuel pump relay terminal 3 and the ECM terminal 24/C230-1.
NO
Replace a known - good ECM and recheck. if the LED green lamp is ON, replace the ECM.
MONITORING FOR PENDING DTC SET ?
YES
Go to the applicable troubleshooting procedure.
NO
System OK
