Acura RL. Manual - part 201

26. Disconnect active noise control rear microphone connector A (2P) and stereo amplifier connector C 

(23P).  

27. Check for continuity between the active noise control unit 16P connector No. 4 terminal and active 

noise control rear microphone connector A (2P) No. 2 terminal. 

Fig. 86: Checking Continuity Between No. 4 Terminal And No. 2 Terminal 
Courtesy of AMERICAN HONDA MOTOR CO., INC. 

Is there continuity?  

YES - Go to step 28. 

NO - Repair open in the wire between the active noise control unit 16P connector No. 4 terminal and 
active noise control front microphone connector A (2P) No. 2 terminal. 

28. Check for continuity between the active noise control unit 16P connector No. 5 terminal and active 

noise control rear microphone connector A (2P) No. 1 terminal. 

Fig. 87: Checking Continuity Between No. 5 Terminal And No. 1 Terminal 
Courtesy of AMERICAN HONDA MOTOR CO., INC.

 

2007 Acura RL 

2005-08 ACCESSORIES AND EQUIPMENT Audio System - RL

  

me 

 

Friday, June 05, 2009 3:53:07 PM

Page 82 

© 2005 Mitchell Repair Information Company, LLC. 

Is there continuity?  

YES - Replace the active noise control unit (see ACTIVE NOISE CONTROL UNIT 
REMOVAL/INSTALLATION ). 

NO - Repair open in the wire between the active noise control unit 16P connector No. 5 terminal and 
active noise control rear microphone connector A (2P) No. 1 terminal. 

29. Check for the No. 32 (10A) and the No. 5 (7.5A) ('06-07 models) fuses in the driver's under-dash 

fuse/relay box. 

Are the fuses OK?  

YES - Go to step 30. 

NO - Replace the fuse, and recheck. 

30. Disconnect the active noise control unit 16P connector.  

31. Measure the voltage between the active noise control unit 16P connector No. 8 terminal and body 

ground. 

Fig. 88: Measuring Voltage Between Active Noise Control Unit 16P Connector No. 8 Terminal 
And Body Ground 
Courtesy of AMERICAN HONDA MOTOR CO., INC. 

Is there battery voltage?  

YES - Go to step 32. 

NO - Repair open in the wire between the No. 32 (10A) fuse ('05 model) or No. 5 (7.5A) fuse ('06-08 
models) in the driver's under-dash fuse/relay box and the active noise control unit 16P connector No. 
8 terminal. 

32. Reconnect the active noise control unit (16P) connector.  

33. Turn the ignition switch ON (II).  

34. Measure the voltage between the active noise control unit 16P connector No. 7 terminal and body 

ground. 

 

2007 Acura RL 

2005-08 ACCESSORIES AND EQUIPMENT Audio System - RL

  

me 

 

Friday, June 05, 2009 3:53:07 PM

Page 83 

© 2005 Mitchell Repair Information Company, LLC. 

Fig. 89: Measuring Voltage Between Active Noise Control Unit 16P Connector No. 7 Terminal 
And Body Ground 
Courtesy of AMERICAN HONDA MOTOR CO., INC. 

Is there less than 0.1V?  

YES - Go to step 35. 

NO - Repair open in the wire between the active noise control unit 16P connector No. 7 terminal and 
body ground (G652). 

35. Reconnect the active noise control unit 16P connector.  

36. Perform the self-diagnostic function (see SELF-DIAGNOSTIC FUNCTION ).  

37. Press the "No. 1" button.  

38. Measure the voltage between the active noise control unit 16P connector No. 12 terminal and body 

ground. 

Fig. 90: Measuring Voltage Between Active Noise Control Unit 16P Connector No. 12 Terminal 
And Body Ground 
Courtesy of AMERICAN HONDA MOTOR CO., INC. 

Is there about 5 V?  

YES - Go to step 44. 

NO - Go to step 39. 

39. Turn the ignition switch to LOCK (0).  

40. Disconnect the active noise control unit 16P connector and stereo amplifier connector A (26P).  

41. Check for continuity between the active noise control unit 16P connector No. 12 terminal and stereo 

 

2007 Acura RL 

2005-08 ACCESSORIES AND EQUIPMENT Audio System - RL

  

me 

 

Friday, June 05, 2009 3:53:07 PM

Page 84 

© 2005 Mitchell Repair Information Company, LLC. 

amplifier connector A (26P) No. 18 terminal. 

Fig. 91: Checking Continuity Between No. 12 Terminal And Stereo Amplifier Connector A 
(26P) No. 18 Terminal 
Courtesy of AMERICAN HONDA MOTOR CO., INC. 

Is there continuity?  

YES - Go to step 42. 

NO - Repair open in the wire between the active noise control unit 16P connector No. 12 terminal and 
stereo amplifier connector A (26P) No. 18 terminal. 

42. Check for continuity between body ground and the active noise control unit 16P connector No. 12 

terminal. 

Fig. 92: Checking Continuity Between Body Ground And Active Noise Control Unit 16P 
Connector No. 12 Terminal 
Courtesy of AMERICAN HONDA MOTOR CO., INC. 

Is there continuity?  

YES - Repair short in the wire between the active noise control unit 16P connector No. 12 terminal 
and stereo amplifier connector A (26P) No. 18 terminal. 

NO - Replace the stereo amplifier (see STEREO AMPLIFIER REMOVAL/INSTALLATION ). 

43. Reconnect the active noise control unit (16P) connector.

 

2007 Acura RL 

2005-08 ACCESSORIES AND EQUIPMENT Audio System - RL

  

me 

 

Friday, June 05, 2009 3:53:07 PM

Page 85 

© 2005 Mitchell Repair Information Company, LLC.