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FUEL PUMP UNIT INSPECTION [SKYACTIV-X 2.0]

FUEL PUMP UNIT INSPECTION [SKYACTIV-X 2.0]

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Fuel Pump Operation Inspection

1.  Connect the M-MDS to the DLC-2.

2.  Perform the KOEO self-test. (See DTC INSPECTION.)

•  If a DTC is detected, repair the malfunctioning location according to the applicable DTC troubleshooting. (See DTC TABLE [PCM (SKYACTIV-X)].)

3.  Remove the fuel-filler cap.

4.  Switch the ignition ON (engine off).

5.  Verify the following operation sounds for approx. 1 s after the ignition is switched ON (engine off).

•  Fuel pump relay (OFF → ON → OFF) (See RELAY LOCATION [(E)].)
•  Fuel pump (Verify direct operation sound from fuel-filler opening)
―  If the operation sounds cannot be verified, inspect the following and repair or replace the malfunctioning location.

Fuel pump relay operation sound cannot be verified
•  Fuel pump relay (stuck open/closed)
•  Wiring harness between IG1 relay and fuel pump relay terminal E (short, open circuit)
•  Wiring harness between fuel pump relay terminal A and PCM terminal 2AW (short, open circuit)
Fuel pump operation sound cannot be verified
•  Fuel pump relay (stuck open or open circuit in internal circuit)
•  Wiring harness between battery and fuel pump relay terminal D
•  Wiring harness between fuel pump relay terminal C and fuel pump control module terminal 2B (short, open circuit)
•  Fuel pump unit (inspect for continuity) (See Continuity Inspection.)
•  Wiring harness between fuel pump unit terminal A and fuel pump control module terminal 2C (short, open circuit)
•  Wiring harness between fuel pump unit terminal B and fuel pump control module terminal 2A (short, open circuit)
•  Wiring harness between fuel pump unit terminal D and fuel pump control module terminal 2E (short, open circuit)
•  Wiring harness between fuel pump unit terminal E and fuel pump control module terminal 2F (short, open circuit)
•  Wiring harness between fuel pump control module terminal 2D and body ground (open circuit, ground point looseness or lifting)
―  If the inspection items are normal, inspect the fuel pump control module. (See FUEL PUMP CONTROL MODULE INSPECTION [SKYACTIV-X 2.0].)

Continuity Inspection

1.  Disconnect the negative battery terminal. (See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION [(E)].)

2.  Disconnect the fuel pump unit connector. (See FUEL PUMP UNIT REMOVAL/INSTALLATION [SKYACTIV-X 2.0].)

3.  Inspect for continuity at the following terminals:

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•  fuel pump unit terminal A—fuel pump unit terminal D.
•  fuel pump unit terminal D—fuel pump unit terminal E.
•  fuel pump unit terminal E—fuel pump unit terminal A.
―  If there is no continuity, replace the fuel pump unit. (See FUEL PUMP UNIT REMOVAL/INSTALLATION [SKYACTIV-X 2.0].)