Acura RL. Manual - part 459

Fig. 71: Checking Continuity Between C251 Connector (13P) Terminal No. 12 And Body 
Ground 
Courtesy of AMERICAN HONDA MOTOR CO., INC. 

Is there continuity?  

YES - Repair short in the wire between the throttle actuator control module and the C251 connector, 
then go to step 63. 

NO - Go to step 35. 

35. Check for continuity between throttle actuator control module 16P connector terminal No. 2 and C251 

connector (13P) terminal No. 12. 

Fig. 72: Checking Continuity Between Throttle Actuator Control Module 16P Terminal 2 And 
C251 (13P) Terminal 12 
Courtesy of AMERICAN HONDA MOTOR CO., INC. 

Is there continuity?  

YES - Go to step 68. 

NO - Repair open in the wire between the throttle actuator control module and the C251 connector, 
then go to step 63. 

36. Turn the ignition switch OFF.  

37. Jump the SCS line with the HDS.  

38. Disconnect the C251 connector (13P) between the PCM subharness and the throttle actuator control 

 

2007 Acura RL 

2005-08 ENGINE PERFORMANCE Electronic Throttle Control System - RL

  

me 

 

Friday, June 05, 2009 2:29:49 PM

Page 57 

© 2005 Mitchell Repair Information Company, LLC. 

module subharness.  

39. Disconnect PCM connector A (31P).  

40. Check for continuity between PCM connector terminals A25 and body ground. 

Fig. 73: Checking Continuity Between PCM Connector Terminals A25 And Body Ground 
Courtesy of AMERICAN HONDA MOTOR CO., INC. 

Is there continuity?  

YES - Repair short in the wire between the PCM (A25) and the C251 connector, then go to step 63. 

NO - Go to step 41. 

41. Check for continuity between PCM connector terminal A25 and C251 connector (13P) terminal No. 

11. 

Fig. 74: Checking Continuity Between PCM Connector Terminal A25 And C251(13P) Terminal 
11 
Courtesy of AMERICAN HONDA MOTOR CO., INC. 

Is there continuity?  

YES - Go to step 56. 

NO - Repair open in the wire between the PCM (A25) and the C251 connector, then go to step 63. 

42. Turn the ignition switch OFF.  

43. Jump the SCS line with the HDS.  

 

2007 Acura RL 

2005-08 ENGINE PERFORMANCE Electronic Throttle Control System - RL

  

me 

 

Friday, June 05, 2009 2:29:49 PM

Page 58 

© 2005 Mitchell Repair Information Company, LLC. 

44. Disconnect the C251 connector (13P) between the PCM subharness and the throttle actuator control 

module subharness.  

45. Disconnect PCM connector A (31P).  

46. Check for continuity between PCM connector terminal A26 and body ground. 

Fig. 75: Checking Continuity Between PCM Connector Terminal A26 And Body Ground 
Courtesy of AMERICAN HONDA MOTOR CO., INC. 

Is there continuity?  

YES - Repair short in the wire between the PCM (A26) and the C251 connector, then go to step 63. 

NO - Go to step 47. 

47. Check for continuity between PCM connector terminal A26 and C251 connector (13P) terminal No. 1. 

Fig. 76: Checking Continuity Between PCM Connector Terminal A26 And C251 Connector 
(13P) Terminal No. 1 
Courtesy of AMERICAN HONDA MOTOR CO., INC. 

Is there continuity?  

YES - Go to step 59. 

NO - Repair open in the wire between the PCM (A26) and the C251 connector, then go to step 63. 

48. Turn the ignition switch OFF.  

49. Jump the SCS line with the HDS.  

 

2007 Acura RL 

2005-08 ENGINE PERFORMANCE Electronic Throttle Control System - RL

  

me 

 

Friday, June 05, 2009 2:29:49 PM

Page 59 

© 2005 Mitchell Repair Information Company, LLC. 

50. Disconnect PCM connectors A (31P) and B (24P).  

51. Check for continuity between body ground and PCM connector terminals A3 and B15 individually. 

Fig. 77: Checking Continuity Between Body Ground And PCM Connector Terminals A3 And 
B15 
Courtesy of AMERICAN HONDA MOTOR CO., INC. 

Is there continuity?  

YES - Check for poor connections or loose terminals at the throttle body, the throttle actuator control 
module relay, the throttle actuator control module, and the PCM, then go to step 1. 

NO - Repair open in the wire between the PCM (A3, B15) and G101, then go to step 63. 

52. Disconnect the throttle actuator control module 16P connector (see THROTTLE ACTUATOR 

CONTROL MODULE REPLACEMENT ).  

53. Check for continuity between throttle actuator control module 16P connector terminal No. 7 and C251 

connector (13P) terminal No. 7. 

Fig. 78: Checking Continuity Between Throttle Actuator Control Module 16P Connector 
Terminal 7 And C251 (13P) Terminal 7 
Courtesy of AMERICAN HONDA MOTOR CO., INC.

 

2007 Acura RL 

2005-08 ENGINE PERFORMANCE Electronic Throttle Control System - RL

  

me 

 

Friday, June 05, 2009 2:29:49 PM

Page 60 

© 2005 Mitchell Repair Information Company, LLC.