Acura RL. Manual - part 709

individually. 

Fig. 163: Measuring Voltage Between Body Ground And PCM Connector Terminals A1, A2, 
A3, And B15 
Courtesy of AMERICAN HONDA MOTOR CO., INC. 

Is there more than 0.2 V?  

YES - Repair open in the wire(s) that had more than 0.2 V between G101 and the PCM (A1, A2, A3, 
and B15) 

NO - Go to step 51. 

51. Measure voltage between body ground and PCM connector terminal C6. 

Fig. 164: Measuring Voltage Between Body Ground And PCM Connector Terminal C6 
Courtesy of AMERICAN HONDA MOTOR CO., INC. 

Is there about 5 V?  

YES - Go to step 59. 

NO - Go to step 52. 

 

2007 Acura RL 

2005-08 ENGINE PERFORMANCE PGM-FI System - RL

  

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Friday, June 05, 2009 2:35:00 PM

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52. Turn the ignition switch OFF.  

53. Disconnect the connector from each of the following sensors, one at a time, and measure voltage 

between body ground and PCM connector terminal C6 with the ignition switch ON (II). 



Manifold absolute pressure (MAP) sensor  



Output shaft (countershaft) speed sensor 

Fig. 165: Measuring Voltage Between Body Ground And PCM Connector Terminal C6 
With Ignition Switch 
Courtesy of AMERICAN HONDA MOTOR CO., INC. 

Is there about 5 V?  

YES - Replace the sensor that restored 5 V when disconnected 

NO - Go to step 54. 

54. Turn the ignition switch OFF.  

55. Jump the SCS line with the HDS.  

56. Disconnect the connectors from these sensors: 



Manifold absolute pressure (MAP) sensor  



Output shaft (countershaft) speed sensor  

57. Disconnect PCM connector C (22P).  

58. Check for continuity between PCM connector terminal C6 and body ground. 

Fig. 166: Checking Continuity Between PCM Connector Terminal C6 And Body Ground 
Courtesy of AMERICAN HONDA MOTOR CO., INC.

 

2007 Acura RL 

2005-08 ENGINE PERFORMANCE PGM-FI System - RL

  

me 

 

Friday, June 05, 2009 2:35:00 PM

Page 179  © 2005 Mitchell Repair Information Company, LLC. 

Is there continuity?  

YES - Repair short in the wire between the PCM (C6) and the MAP sensor or the output shaft 
(countershaft) speed sensor 

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 ) 

59. Measure voltage between body ground and PCM connector terminal C14. 

Fig. 167: Measuring Voltage Between Body Ground And PCM Connector Terminal C14 
Courtesy of AMERICAN HONDA MOTOR CO., INC. 

Is there about 5 V?  

YES - Go to step 67. 

NO - Go to step 60. 

60. Turn the ignition switch OFF.  

61. Disconnect the connector from each of the following sensors, one at a time, while measuring voltage 

between body ground and PCM connector terminal C14 with the ignition switch ON (II). 



Intake manifold tuning (IMT) actuator  



Exhaust gas recirculation (EGR) valve  



Input shaft (mainshaft) speed sensor 

Fig. 168: Measuring Voltage Between Body Ground And PCM Connector Terminal C14 

 

2007 Acura RL 

2005-08 ENGINE PERFORMANCE PGM-FI System - RL

  

me 

 

Friday, June 05, 2009 2:35:00 PM

Page 180  © 2005 Mitchell Repair Information Company, LLC. 

With Ignition Switch 
Courtesy of AMERICAN HONDA MOTOR CO., INC. 

Is there about 5 V?  

YES - Replace the part that restored 5 V when disconnected 

NO - Go to step 62. 

62. Turn the ignition switch OFF.  

63. Jump the SCS line with the HDS.  

64. Disconnect the connectors from these parts: 



Intake manifold tuning (IMT) actuator  



Exhaust gas recirculation (EGR) valve  



Input shaft (mainshaft) speed sensor  

65. Disconnect PCM connector C (22P).  

66. Check for continuity between PCM connector terminal C14 and body ground. 

Fig. 169: Checking Continuity Between PCM Connector Terminal C14 And Body Ground 
Courtesy of AMERICAN HONDA MOTOR CO., INC. 

Is there continuity?  

YES - Repair short in the wire between the PCM (C14) and the IMT actuator, the EGR valve, or the 
input shaft (mainshaft) speed sensor 

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 ) 

67. Measure voltage between body ground and PCM connector terminal D2. 

 

2007 Acura RL 

2005-08 ENGINE PERFORMANCE PGM-FI System - RL

  

me 

 

Friday, June 05, 2009 2:35:00 PM

Page 181  © 2005 Mitchell Repair Information Company, LLC.