Safety Recall: 2019-2020 Acura RDX Fuel Pump Motor

Service Bulletin

B21-014
August 6, 2021
Version 2

Safety Recall: 2019-20 RDX Fuel Pump Motor

Supersedes 21-014, dated, April 9, 2021, to revise the information highlighted in yellow.

 

AFFECTED VEHICLES

 

 

REVISION SUMMARY

Under REPAIR PROCEDURE, steps 14, 16, 28, 29, 30, and 31 were revised.

 

BACKGROUND

Due to swelling of the fuel pump motor impeller, the fuel pump may seize and stop working. If this occurs, the check engine light may be displayed with DTC P0087 (Fuel Rail Pressure Too Low) stored, the engine may not start, or the engine could stall while driving, increasing the risk of a crash.

 

CLIENT NOTIFICATION

Owners of affected vehicles will be sent a notification of this campaign.

Do an iN VIN status inquiry to make sure the vehicle is shown as eligible.

Some vehicles affected by this campaign may be in your new or used vehicle inventory.

Failure to repair a vehicle subject to a recall or campaign may subject your dealership to claims or lawsuits from the client or anyone else harmed as a result of such failure. To see if a vehicle in inventory is affected by this safety recall, do a VIN status inquiry before selling it.

 

CORRECTIVE ACTION

Replace the fuel pump motor.

NOTE: If the vehicle has any of the symptoms listed in BACKGROUND, you must apply this bulletin before attempting any other repairs. If the symptoms remain after the recall repair is complete, only attempt further repairs (such as replacing the high pressure fuel pump) after authorized troubleshooting.

 

PARTS INFORMATION

NOTE: Due to limited supply, this is a controlled part and will require a valid VIN when ordering.

 

For dealers experiencing a strong fuel smell from storing a fuel pump motor replaced under this service bulletin, the fuel pump motor may be disposed of immediately in accordance with local regulations. This only applies to the fuel pump motor replaced under this service bulletin. The published retention policy remains in effect for all other parts.  If you have any questions about this exception or other parts retention issues, contact the WPI Administrative Office at 937-642-2737.

 

TOOL INFORMATION

 

 

WARRANTY CLAIM INFORMATION

 

Skill Level: Repair Technician

 

REPAIR PROCEDURE

⚠ WARNING

Fuel pump motor removal exposes fuel, which can ignite, causing a fire or explosion.

This can cause serious injury or death.

Always work in a well-ventilated area, and keep sparks or open flames away.

 

1. Fold down the right rear seat-back.

 

2. Remove the cargo floor lid.

 

3. Remove the cargo bin cap.

 

4. Remove the rear seat cushion bolt.

 

5. Fold up the right-rear seat-back to the upright position.

6. While pushing down on the rear seat cushion, pull the seat hook handles to release the hooks.

7. Pull back the seat cushion to pull off the seat belt buckles from the slits in the seat cushion.

 

8. With rear seat heaters: Disconnect the connectors.

 

9. Remove the rear seat cushion.

10. Insert the emergency fuel funnel into the fuel filler neck to relieve the pressure in the fuel tank.

 

NOTE: The emergency fuel funnel is in the cargo tool box.

 

11. Relieve the fuel pressure.

With an i-HDS:

• Connect an i-HDS to the vehicle.

• Turn the vehicle to ON.

• Select the PGM-FI system on the i-HDS.

• Select FUEL PUMP OFF from the Function Test menu.

• Start the engine and let it idle until it stalls.

• Turn the ignition to OFF.

 

Without an i-HDS:

• Remove the fuel tank unit access panel.

 

• Disconnect the fuel tank unit connector.

 

• Start the engine, and let it idle until it stalls.

• Turn the ignition to OFF.

 

NOTE:

• Do not allow the engine to idle above 1,000 rpm, or the PCM will continue to operate the fuel pump.
• A pending or confirmed DTC may be set during this procedure. After the repair is complete, check for DTCs, and clear them as needed.

 

12. Disconnect both 12-volt battery terminals.

 

NOTICE

To protect the terminal connector from damage, do not hold it when removing the negative terminal.

 

NOTE:

• Always disconnect the negative terminal first.

• Do not disconnect the 12-volt battery sensor from the cable.

 

13. Place a rag or shop towel over the quick-connect fitting, and disconnect it.

 

14. Remove the fuel tank unit cam lock ring using the fuel sender wrench (T/N 070AA-TLA0100) as shown.

 

NOTE:

• Keep the fuel sender wrench from floating.

• After unlocking the fuel tank unit cam lock ring, clean the top of the fuel pump flange and adjacent areas to make sure it’s free of dirt, dust, and debris.

 

15. Slightly pull up and tilt the fuel tank unit, then disconnect the transfer tube.

 

NOTE: The gasoline in the fuel tank will drain out once the transfer tube is disconnected. Make sure it pours back into the tank.

 

16. Remove the fuel tank unit.

 

NOTICE

Do not to bend or twist the fuel level sensor arm excessively. This may damage the fuel level sensor or cause it to send inaccurate readings.

 

NOTE:

• After removing the fuel pump unit, clean the fuel tank around the fuel pump opening.

• After removing the fuel pump O-ring, clean the fuel tank around the O-ring opening and make sure it’s free of dirt, dust, and debris.

 

17. Prepare the fuel pump and parts to be replaced.

 

NOTE: Take a photo of the fuel tube and wire harness, and note their routing for assembly. There are various types of routing.

 

18. Spread the wire harness clamps, and remove the wire harness. Make sure not to damage the wire harness.

 

NOTICE

Do not spread the clamps too wide. Spreading them too wide may damage them.

 

19. Press the tab on the fuel level sensor to release the lock. Then, push up on the fuel level sensor.

 

20. Disconnect the fuel level sensor harness and remove the fuel level sensor from the fuel tank unit.

21. Remove the E-rings, and discard them.

22. Use an O-ring pick to disconnect joint A inside the reservoir.

23. NOTE: If the O-ring remains inside the joint, use a flathead screwdriver wrapped in protective tape to remove it. Take care not to damage the O-ring seat section.

 

24. Disconnect joint B at the bottom of the reservoir.

 

25. Remove the fuel filter assembly from the reservoir by releasing the three clips.

 

NOTICE

Do not spread the clips too wide. Spreading them too wide may damage them.

 

NOTE: The spring may slide off the sliding shaft. Retain this spring. It will be used during assembly.

 

26. Release the three clips at the base of the fuel pump assembly and remove it from the fuel filter.

 

27. Pull the fuel pump assembly out of the fuel filter.

 

NOTE: If the O-ring remains on the fuel filter, use a flat-tip screwdriver wrapped in protective tape to remove it. Make sure not to damage the O-ring seat section.

 

28. Install the new spacer on the new fuel pump motor.

 

29. Install the new O-ring, then lubricate the outside edge of it, using only clean engine oil.

 

NOTE: Do not pinch the O-ring during installation.

 

30. Install the new harness and make sure the connection is secure and the connectors are firmly locked into place.

 

31. Place the fuel pump on a bench, then install the filter to the fuel pump.

 

NOTE: If the fuel pump does not engage into the fuel filter in one step, confirm that the O-ring is still set before repeating fuel pump installation.

 

32. Install the fuel filter assembly to the reservoir.

 

NOTE:

• Insert the spring into the sliding shaft, and make sure it is lined up when installing the fuel filter.

• Make sure the fuel tube is routed exactly as shown in the photo taken before disassembly.

• Make sure the three clips are fully engaged.

 

33. Install the new E-rings.

 

NOTE: After installation, make sure the E-rings can be rotated with your finger. If they cannot be rotated, the E-rings may not be fully seated or may be incorrectly installed.

 

34. Install the fuel level sensor to the reservoir. Make sure the lock is engaged and the connection is secure.

 

NOTICE

Do not to bend or twist the fuel level sensor arm excessively. This may damage the fuel level sensor or cause it to send inaccurate readings.

 

35. Install the wiring harness to the clamps.

 

NOTICE

Do not spread the clamps too wide. Spreading them too wide may damage them.

 

NOTE:

• Clip in the smaller harness wires followed by the larger wires.

• Make sure not to damage the wire harness.

• Make sure to route the wire harness exactly as shown in the photo taken before disassembly.

 

36. While compressing the fuel tank unit, make sure the movement is smooth and the fuel tube and wiring harness do not stretch, pinch, or bind.

 

37. Line up the tab of the fuel tank unit as shown, and partially install the new fuel tank unit cam lock ring with a new  O-ring.

 

NOTE:

• Be careful not to damage the O-ring.

• Do not coat the O-ring with any oil.

 

38. Turn the fuel tank unit cam lock ring by hand, and slide the fuel tank unit cam lock tabs to the positioning edge  as shown.

 

NOTICE

Make sure the fuel cam lock ring is not floating. If the cam lock ring is not properly installed, the fuel tank can be damaged and will require replacement.

 

39. Tighten the fuel tank unit cam lock ring by turning it clockwise using the fuel sender wrench.

 

NOTE:

• Keep the fuel sender wrench from floating.

• Securely set the positioning edge of the fuel tank to tabs on the cam lock ring as shown.

 

 

40. Remove the quick-connect fitting retainer from the fuel tank unit, then install a new retainer onto the quick- connect fitting.

 

41. Connect the fuel line quick-connect fitting.

 

42 Connect the fuel tank unit connector.

43. Connect the 12-volt battery terminals.

44. Turn the ignition to ON, but do not turn the engine on. After the fuel pump runs for about 2 seconds, the fuel line will be pressurized. Repeat this two or three times, then make sure there is no fuel leakage.

45. Install the fuel tank unit access panel.

46. Install the remaining parts in the reverse order of removal.

47. Clear all DTCs using an i-HDS.

48. California residents only: Fill out a Vehicle Emissions Recall – Proof of Correction certificate, and use FAM as the recall number. Have the service consultant give the certificate to your client, and advise him or her to keep it as proof that the recall was completed. Your client will need to submit this certificate to the DMV only if the DMV requests it. If you need more certificates, use reorder number Y0657.

 

END

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RCRIT-21V215-8034.pdf 1509.541KB

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