Acura RL. Manual - part 523

Is there continuity?  

YES - Repair short in the wire between the gauge control module (signal line) and the fuel gauge 
sending unit, then go to step 31. 

NO - Go to step 23. 

21. Turn the ignition switch OFF.  

22. Check for continuity between fuel tank unit 5P connector terminal No. 1 and body ground. 

Fig. 4: Checking Continuity Between Fuel Tank Unit 5P Connector Terminal No. 1 And Body 
Ground 
Courtesy of AMERICAN HONDA MOTOR CO., INC. 

Is there continuity?  

YES - Repair short in the wire between the fuel tank unit and the secondary fuel gauge sending unit, 
then go to step 31. 

NO - Check for fuel gauge sending unit (see FUEL GAUGE SENDING UNIT TEST ). 

23. Reconnect the gauge control module connector A (20P).  

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

REPLACEMENT ) and the secondary fuel gauge sending unit (see SECONDARY FUEL GAUGE 
SENDING UNIT REPLACEMENT ).  

25. Connect the fuel tank unit and secondary fuel gauge sending unit 5P connector.  

26. Turn the ignition switch ON (II).  

27. Clear the DTC with the HDS.  

28. Set the float (A) to the E position. 

Fuel tank unit  

 

2007 Acura RL 

2005-08 ENGINE PERFORMANCE Fuel Supply System - RL

  

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Fig. 5: Setting Float To E Position (Fuel Tank Unit) 
Courtesy of AMERICAN HONDA MOTOR CO., INC. 

Secondary fuel gauge sending unit  

Fig. 6: Setting Float To E Position (Secondary Fuel Gauge Sending Unit) 
Courtesy of AMERICAN HONDA MOTOR CO., INC. 

29. Check the fuel gauge. 

Does the gauge move to the empty position?  

YES - Go to step 37. 

NO - Replace the gauge control module (see GAUGE CONTROL MODULE REPLACEMENT ), 
then go to step 30. 

30. Turn the ignition switch OFF.  

31. Install the parts in the reverse order of removal.  

32. Reconnect all connectors.  

33. Turn the ignition switch ON (II).  

34. Reset the PCM with the HDS.  

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

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

Is DTC P0462 indicated?  

 

2007 Acura RL 

2005-08 ENGINE PERFORMANCE Fuel Supply System - RL

  

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YES - Check for poor connections or loose terminals at the gauge control module, the fuel gauge 
sending unit, and the secondary fuel gauge sending unit, then go to step 1. 

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

37. Turn the ignition switch OFF.  

38. Install the parts in the reverse order of removal.  

39. Turn the ignition switch ON (II).  

40. 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 ).  

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

Is DTC P0462 indicated?  

YES - Check for poor connections or loose terminals at the gauge control module, the fuel gauge 
sending unit, and the secondary fuel gauge sending unit. 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. 

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. 

DTC P0463: FUEL LEVEL SENSOR (FUEL GAUGE SENDING UNIT) CIRCUIT HIGH 
VOLTAGE 

1. Turn the ignition switch ON (II).  

2. Clear the DTC with the HDS, and wait 5 seconds.  

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

Is DTC P0463 indicated?  

YES - Go to step 4. 

NO - Intermittent failure, the system is OK at this time. Check for poor connections or loose terminals 
at the gauge control module, the fuel gauge sending unit, and the secondary fuel gauge sending unit. 

4. Turn the ignition switch OFF.  

5. Remove the rear seat cushion (see REAR SEAT REMOVAL/INSTALLATION ).  

6. Remove the access panel from the left side of the floor.  

7. Disconnect the fuel pump 5P connector.  

8. Remove the access panel from the right side of the floor. 

NOTE:

Before you troubleshoot, record all freeze data and any on-board snapshot, 
and review the general troubleshooting information (see GENERAL 
TROUBLESHOOTING INFORMATION ).

 

2007 Acura RL 

2005-08 ENGINE PERFORMANCE Fuel Supply System - RL

  

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9. Disconnect the secondary fuel gauge sending unit 5P connector.  

10. Check for continuity between fuel gauge sending unit 5P connector terminal No. 1 and the secondary 

fuel gauge sending unit 5P connector terminal No. 2. 

Fig. 7: Checking Continuity Between No. 1 And Secondary Fuel Gauge Sending Unit 5P 
Connector Terminal No. 2 
Courtesy of AMERICAN HONDA MOTOR CO., INC. 

Is there continuity?  

YES - Go to step 11. 

NO - Repair open in the wire between the fuel gauge sending unit and the secondary fuel gauge 
sending unit, then go to step 25. 

11. Remove the gauge control module (see GAUGE CONTROL MODULE REPLACEMENT ).  

12. Disconnect gauge control module connector A (20P).  

13. Connect secondary fuel gauge sending unit 5P connector terminal No. 1 to body ground with a jumper 

wire. 

Fig. 8: Connecting Secondary Fuel Gauge Sending Unit 5P Connector Terminal No. 1 To Body 
Ground With Jumper Wire 
Courtesy of AMERICAN HONDA MOTOR CO., INC. 

14. Check for continuity between gauge control module connector A (20P) terminal No. 18 and body 

 

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.