Acura RL. Manual - part 529

4. Turn the ignition switch OFF.  

5. Remove the fuel fill cap.  

6. Disconnect the negative cable from the battery.  

7. Remove the quick-connect fitting cover (A). A. 

Fig. 42: Identifying Quick-Connect Fitting Cover 
Courtesy of AMERICAN HONDA MOTOR CO., INC. 

8. Check the fuel quick-connect fitting for dirt, and clean it if needed.  

9. Place a rag or shop towel over the quick-connect fitting (A). 

Fig. 43: Identifying Quick-Connect Fitting 
Courtesy of AMERICAN HONDA MOTOR CO., INC. 

10. Disconnect the quick-connect fitting (A): Hold the connector (B) with one hand, and squeeze the 

retainer tabs (C) with the other hand to release them from the locking tabs (D). Pull the connector off. 

NOTE:



Be careful not to damage the line (E) or other parts.  



Do not use tools.  



If the connector does not move, keep the retainer tabs pressed 
down, and alternately pull and push the connector until it comes 
off easily.  

 

2007 Acura RL 

2005-08 ENGINE PERFORMANCE Fuel Supply System - RL

  

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11. After disconnecting the quick-connect fitting, check it for dirt or damage (see step 4 ).  

12. Reconnect the negative cable to the battery, and do these items: 



Power window control unit reset procedure (see RESETTING THE POWER WINDOW 
CONTROL UNIT ).  



Enter the anti-theft codes for the audio system and the navigation system.  



PCM reset procedure (see PCM RESET ).  



Steering column memorization (see STEERING COLUMN POSITION 
MEMORIZATION ).  

FUEL PRESSURE TEST 

Special Tools Required  



Fuel pressure gauge 07406-004000A  



Fuel pressure gauge attachment set 07AAJ-S6MA150  

1. Relieve the fuel pressure (see FUEL PRESSURE RELIEVING ).  

2. Disconnect the quick-connect fitting. Attach the fuel pressure gauge set and the fuel pressure gauge. 



Do not remove the retainer from the line; once removed, the 
retainer must be replaced with a new one. 

Fig. 44: Identifying Quick-Connect Fitting, Retainer And Locking 
Tabs 
Courtesy of AMERICAN HONDA MOTOR CO., INC. 

 

2007 Acura RL 

2005-08 ENGINE PERFORMANCE Fuel Supply System - RL

  

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Friday, June 05, 2009 3:13:31 PM

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© 2005 Mitchell Repair Information Company, LLC. 

Fig. 45: Attaching Fuel Pressure Gauge Set And Fuel Pressure Gauge 
Courtesy of AMERICAN HONDA MOTOR CO., INC. 

3. Start the engine, and let it idle. 



If the engine starts, go to step 5.  



If the engine does not start, go to step 4.  

4. Check to see if the fuel pump is running: Listen to the fuel filler port with the fuel fill cap removed. 

The fuel pump should run for 2 seconds when the ignition switch is first turned on. 



If the pump runs, go to step 5.  



If the pump does not run, refer to the DTC TROUBLESHOOTING.  

5. Read the fuel pressure gauge. The pressure should be 380-430 kPa (3.9-4.4 kgf/cm

2

 , 55-63 psi). 



If the pressure is OK, the test is complete.  



If the pressure is out of specification, replace the fuel pressure regulator (see FUEL 
PRESSURE REGULATOR REPLACEMENT ) and the fuel filter (see FUEL FILTER 
REPLACEMENT ), then recheck the fuel pressure.  

TRANSFER FUEL PUMP TEST 

Special Tools Required  

Vacuum pump/gauge, 0-30 in.Hg, Snap-on YA4000A or equivalent, commercially available 

1. Remove the fuel tank unit (see FUEL PUMP/FUEL GAUGE SENDING UNIT 

REPLACEMENT ).  

2. Disconnect the transfer tube (A), then connect a vacuum pump/gauge, 0-30 in.Hg, to the fuel tank 

unit. 

NOTE:

If the fuel tank is full, drain the fuel (see FUEL TANK DRAINING ).

 

2007 Acura RL 

2005-08 ENGINE PERFORMANCE Fuel Supply System - RL

  

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© 2005 Mitchell Repair Information Company, LLC. 

Fig. 46: Identifying Transfer Tube 
Courtesy of AMERICAN HONDA MOTOR CO., INC. 

3. Connect the fuel pump 5P connector.  

4. Lower the fuel tank unit (A) into the fuel tank until the pick up screen is submerged in the fuel. 

Fig. 47: Identifying Fuel Tank Unit 
Courtesy of AMERICAN HONDA MOTOR CO., INC. 

5. Turn the ignition switch ON (II).  

6. From the INSPECTION MENU of the HDS, select Fuel Pump ON.  

7. Read the vacuum pump/gauge, 0-30 in.Hg. The vacuum should be 4.0 kPa (1.2 in.Hg, 30 mmHg). 



If the vacuum is OK, go to step 8.  



If the vacuum is out of specification, replace the fuel tank unit (see FUEL PUMP/FUEL 
GAUGE SENDING UNIT REPLACEMENT ), then recheck the fuel vacuum.  

8. Connect a vacuum pump/gauge, 0-30 in.Hg, to the transfer tube. 

 

2007 Acura RL 

2005-08 ENGINE PERFORMANCE Fuel Supply System - RL

  

me 

 

Friday, June 05, 2009 3:13:31 PM

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© 2005 Mitchell Repair Information Company, LLC.