Acura RL. Manual - part 528

Fig. 36: Measuring Voltage Between Fuel Pump 5P Connector Terminal No. 5 And Body
Ground
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is there battery voltage?

YES - Replace the fuel pump (see FUEL PUMP/FUEL GAUGE SENDING UNIT
REPLACEMENT ), then go to step 68.

NO - Substitute a known-good fuel pump control module (see FUEL PUMP CONTROL MODULE
REPLACEMENT ), then go to step 68 and recheck. If DTC P0627 is not indicated, replace the
original fuel pump control module (see FUEL PUMP CONTROL MODULE REPLACEMENT ),
then go to step 68. If DTC P0627 is indicated, go to step 74.

68. Turn the ignition switch OFF.

69. Reconnect all connectors.

70. Turn the ignition switch ON (II).

71. Reset the PCM with the HDS.

72. Do the PCM idle learn procedure (see PCM IDLE LEARN PROCEDURE ).

73. Check for Temporary DTCs or DTCs with the HDS.

Is DTC P0627 indicated?

YES - Check for poor connections or loose terminals at the fuel pump control module, PGM-FI main
relay 2 (FUEL PUMP), the fuel pump, and the PCM, then go to step 1.

NO - Troubleshooting is complete. If any other Temporary DTCs or DTCs are indicated, go to the
indicated DTCs troubleshooting.

74. Update the PCM if it does not have the latest software (see UPDATING THE PCM ), or substitute a

known-good PCM (see SUBSTITUTING THE PCM ).

75. Check for Temporary DTCs or DTCs with the HDS.

Is DTC P0627 indicated?

YES - Check for poor connections or loose terminals at the fuel pump control module, PGM-FI main
relay 2 (FUEL PUMP), the fuel pump, and the PCM. If the PCM was updated, substitute a known-
good PCM (see SUBSTITUTING THE PCM ), then recheck. If the PCM was substituted, go to step
1.

2007 Acura RL

2005-08 ENGINE PERFORMANCE Fuel Supply System - RL

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NO - If the PCM was updated, troubleshooting is complete. If the PCM was substituted, replace the
original PCM (see PCM REPLACEMENT ). If any other Temporary DTCs or DTCs are indicated,
go to the indicated DTCs troubleshooting.

FUEL PRESSURE RELIEVING

Before disconnecting fuel lines or hoses, relieve pressure from the system by stopping the fuel pump and
disconnecting the fuel tube/quick connect fitting in the engine compartment.

WITH THE HDS

1. Make sure you have the anti-theft codes for the audio system and the navigation system.

2. Turn the ignition switch OFF.

3. Connect the HDS to the data link connector (DLC) (A) located under the driver's side of the

dashboard.

Fig. 37: Identifying Data Link Connector Location
Courtesy of AMERICAN HONDA MOTOR CO., INC.

4. Turn the ignition switch ON (II).

5. Make sure the HDS communicates with the PCM and other vehicle systems. If it doesn't, go to DLC

circuit troubleshooting (see DLC CIRCUIT TROUBLESHOOTING ).

6. Remove the fuel fill cap.

7. From the INSPECTION MENU of the HDS, select Fuel Pump OFF, then start the engine, and let it

idle until it stalls.

8. Turn the ignition switch OFF.

9. Disconnect the negative cable from the battery.

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

NOTE:



Do not allow the engine to idle above 1,000 rpm or the PCM will
continue to operate the fuel pump.



A DTC or a Temporary DTC may be set during this procedure.
Check for DTCs, and clear them as needed (see DTC CLEAR ).

2007 Acura RL

2005-08 ENGINE PERFORMANCE Fuel Supply System - RL

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Fig. 38: Identifying Quick-Connect Fitting Cover
Courtesy of AMERICAN HONDA MOTOR CO., INC.

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

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

Fig. 39: Identifying Quick-Connect Fitting
Courtesy of AMERICAN HONDA MOTOR CO., INC.

13. 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.



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

2007 Acura RL

2005-08 ENGINE PERFORMANCE Fuel Supply System - RL

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

15. 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.



Steering column memorization (see STEERING COLUMN POSITION
MEMORIZATION ).

WITHOUT THE HDS

1. Make sure you have the anti-theft codes for the audio system and the navigation system.

2. Remove the left kick panel (see step 3 under TRIM REMOVAL/INSTALLATION - DOOR

AREAS ), then remove PGM-FI main relay 2 (FUEL PUMP) (A) from the under-dash fuse/relay box.

Fig. 41: Identifying PGM-FI Main Relay
Courtesy of AMERICAN HONDA MOTOR CO., INC.

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

Fig. 40: Identifying Quick-Connect Fitting, Locking Retainer Tabs
Courtesy of AMERICAN HONDA MOTOR CO., INC.

NOTE:

If any DTCs are stored, clear and ignore them.

2007 Acura RL

2005-08 ENGINE PERFORMANCE Fuel Supply System - RL

Friday, June 05, 2009 3:13:31 PM

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