Acura RL. Manual - part 706

Fig. 148: Checking Continuity Between PCM Connector Terminal E26 And Body Ground 
Courtesy of AMERICAN HONDA MOTOR CO., INC. 

Is there continuity?  

YES - Repair short in the wire between PCM connector terminal E26* and the gauge control module, 
the VSA modulator-control unit, the SH-AWD control unit, the ACC unit, the e-pretensioner unit, the 
TPMS unit, or the DLC 

NO - Go to step 48. 

48. Reconnect all connectors.  

49. Connect the HDS to the DLC (see GENERAL TROUBLESHOOTING INFORMATION ).  

50. Disconnect gauge control module connector B (28P).  

51. Turn the ignition switch ON (II), and read the HDS. 

Does the HDS identify the vehicle?  

YES - Replace the gauge control module (see GAUGE CONTROL MODULE REPLACEMENT )

NO - Go to step 52. 

52. Turn the ignition switch OFF.  

53. Reconnect gauge control module connector B (28P).  

54. Disconnect the VSA modulator-control unit 47P connector.  

55. Turn the ignition switch ON (II), and read the HDS. 

Does the HDS identify the vehicle?  

YES - Replace the VSA modulator-control unit (see VSA MODULATOR-CONTROL UNIT 
REMOVAL AND INSTALLATION ) 

NO - Go to step 56. 

56. Turn the ignition switch OFF.  

57. Reconnect the VSA modulator-control unit 47P connector.  

58. Disconnect SH-AWD control unit connector A (26P). 

 

2007 Acura RL 

2005-08 ENGINE PERFORMANCE PGM-FI System - RL

  

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59. Turn the ignition switch ON (II), and read the HDS. 

Does the HDS identify the vehicle?  

YES - Replace the SH-AWD control unit (see SH-AWD CONTROL UNIT REPLACEMENT ) 

NO - Go to step 60. 

60. Turn the ignition switch OFF.  

61. Reconnect SH-AWD control unit connector A (26P).  

62. Disconnect the ACC unit 20P connector.  

63. Turn the ignition switch ON (II), and read the HDS. 

Does the HDS identify the vehicle?  

YES - Replace the ACC unit (see ADAPTIVE CRUISE CONTROL (ACC) UNIT 
REMOVAL/INSTALLATION ) 

NO - Go to step 64. 

64. Turn the ignition switch OFF.  

65. Reconnect the ACC unit 20P connector.  

66. Disconnect e-pretensioner unit connector B (14P).  

67. Turn the ignition switch ON (II), and read the HDS. 

Does the HDS identify the vehicle?  

YES - Replace the e-pretensioner unit (see E-PRETENSIONER UNIT REPLACEMENT ) 

NO - Go to step 68. 

68. Reconnect e-pretensioner unit connector B (14P).  

69. Disconnect TPMS unit connector B (20P).  

70. Turn the ignition switch ON (II), and read the HDS. 

Does the HDS identify the vehicle?  

YES - Replace the TPMS unit (see TPMS INDICATOR OR TIRE(S) INDICATOR(S) DOES 
NOT GO OFF, AND NO DTCS ARE STORED ) 

NO - 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 ), then recheck. If the 
symptom/indication goes away with a known-good PCM, replace the original PCM (see PCM 
REPLACEMENT ) 

MIL CIRCUIT TROUBLESHOOTING

 

2007 Acura RL 

2005-08 ENGINE PERFORMANCE PGM-FI System - RL

  

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1. Turn the ignition switch ON (II).  

2. Do the gauge self-diagnostic procedure (see SELF-DIAGNOSTIC FUNCTION ). 

Does the MIL indicator flash?  

YES - Go to step 3. 

NO - Substitute a known-good gauge control module, and recheck. If the MIL circuit is OK, replace 
the original gauge control module 

3. Turn the ignition switch OFF.  

4. Turn the ignition switch ON (II), and watch the MIL. 

Does the MIL stay off?  

YES - Go to step 17. 

NO - Go to step 5. 

5. Turn the ignition switch OFF.  

6. Turn the ignition switch ON (II), wait 20 seconds, and watch the MIL. 

Does the MIL stay on or flash more than 5 times?  

YES - Go to step 7. 

NO - The MIL circuit is OK 

7. Turn the ignition switch OFF.  

8. Connect the HDS to the DLC (see GENERAL TROUBLESHOOTING INFORMATION ).  

9. Turn the ignition switch ON (II), and read the HDS. 

Does the HDS communicate with the PCM?  

YES - Go to step 10. 

NO - Go to "DLC CIRCUIT TROUBLESHOOTING" 

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

Are any Temporary DTCs or DTCs indicated?  

YES - Go to the indicated DTCs troubleshooting 

NO - Go to step 11. 

11. Check the MIL in the DATA LIST with the HDS. 

 

2007 Acura RL 

2005-08 ENGINE PERFORMANCE PGM-FI System - RL

  

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Does it indicate ON?  

YES - Go to step 12. 

NO - Substitute a known-good gauge control module, and recheck. If the MIL circuit is OK, replace 
the original gauge control module 

12. Check the SCS in the DATA LIST with the HDS. 

Is a short indicated?  

YES - Go to step 13. 

NO - 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 ), then recheck, If the 
symptom/indication goes away with a known-good PCM, replace the original PCM (see PCM 
REPLACEMENT ) 

13. Turn the ignition switch OFF.  

14. Jump the SCS line with the HDS.  

15. Disconnect PCM connector E (31P), then disconnect the HDS.  

16. Check for continuity between PCM connector terminal E16 and body ground. 

Fig. 149: Checking Continuity Between PCM Connector Terminal E16 And Body Ground 
Courtesy of AMERICAN HONDA MOTOR CO., INC. 

Is there continuity?  

YES - Repair short in the wire between the PCM (E16) and the DLC 

NO - 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 ), then recheck. If the 
symptom/indication goes away with a known-good PCM, replace the original PCM (see PCM 
REPLACEMENT ) 

17. Try to start the engine. 

Does the engine start and idle smoothly?

 

2007 Acura RL 

2005-08 ENGINE PERFORMANCE PGM-FI System - RL

  

me 

 

Friday, June 05, 2009 2:35:00 PM

Page 169  © 2005 Mitchell Repair Information Company, LLC.