Acura RL. Manual - part 445

2005-08 ENGINE PERFORMANCE

Electronic Throttle Control System - RL 

COMPONENT LOCATION INDEX 

Fig. 1: Identifying Electronic Throttle Control System Component Location (1 Of 2) 
Courtesy of AMERICAN HONDA MOTOR CO., INC.

 

2007 Acura RL 

2005-08 ENGINE PERFORMANCE Electronic Throttle Control System - RL

  

 

2007 Acura RL 

2005-08 ENGINE PERFORMANCE Electronic Throttle Control System - RL

  

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Friday, June 05, 2009 2:29:49 PM

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Fig. 2: Identifying Electronic Throttle Control System Component Location (2 Of 2) 
Courtesy of AMERICAN HONDA MOTOR CO., INC. 

DTC TROUBLESHOOTING 

DTC P0122: TP SENSOR A CIRCUIT LOW VOLTAGE 

NOTE:

Before you troubleshoot, record all freeze data and any on-board snapshot, 

 

2007 Acura RL 

2005-08 ENGINE PERFORMANCE Electronic Throttle Control System - RL

  

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Friday, June 05, 2009 2:29:49 PM

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© 2005 Mitchell Repair Information Company, LLC. 

1. Turn the ignition switch ON (II).  

2. Clear the DTC with the HDS.  

3. Check TP SENSOR A in the DATA LIST with the HDS. 

Is there about 0.3 V or less?  

YES - Go to step 4. 

NO - Intermittent failure, the system is OK at this time. Check for poor connections or loose terminals 
at the throttle body and the throttle actuator control module. 

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

Are DTC P0122 and P0222 indicated at the same time?  

YES - Check for, and repair any poor connections or loose terminals at the throttle body, the throttle 
actuator control module, and the PCM, then go to step 21. If the connections and terminals are OK, go 
to step 11. 

NO - Go to step 5. 

5. Turn the ignition switch OFF.  

6. Disconnect the throttle body 6P connector.  

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

module subharness.  

8. Check for continuity between throttle body 6P connector terminal No. 1 and body ground. 

Fig. 3: Checking Continuity Between Throttle Body 6P 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 throttle body and the C251 connector (TPSA line), then go 
to step 17. 

and review the general troubleshooting information (see GENERAL 
TROUBLESHOOTING INFORMATION ).

 

2007 Acura RL 

2005-08 ENGINE PERFORMANCE Electronic Throttle Control System - RL

  

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Friday, June 05, 2009 2:29:49 PM

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© 2005 Mitchell Repair Information Company, LLC. 

NO - Go to step 9. 

9. Disconnect the throttle actuator control module 16P connector.  

10. Check for continuity between C251 connector (13P) terminal No. 4 and body ground. 

Fig. 4: Checking Continuity Between C251 Connector (13P) Terminal No. 4 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 
(TPSA line), then go to step 21. 

NO - Go to step 26. 

11. Measure voltage between throttle body 6P connector terminal No. 2 and body ground. 

Fig. 5: Measuring Voltage Between Throttle Body 6P Connector Terminal No. 2 And Body 
Ground 
Courtesy of AMERICAN HONDA MOTOR CO., INC. 

Is there about 5 V?  

YES - Go to step 19. 

NO - Go to step 12. 

12. Turn the ignition switch OFF.  

13. Disconnect the throttle body 6P connector. 

 

2007 Acura RL 

2005-08 ENGINE PERFORMANCE Electronic Throttle Control System - RL

  

me 

 

Friday, June 05, 2009 2:29:49 PM

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© 2005 Mitchell Repair Information Company, LLC.