Acura RL. Manual - part 245

to the INDICATED DTCS TROUBLESHOOTING.

NO - Check for poor connections and loose terminals at the input shaft (mainshaft) speed sensor, the 
output shaft (countershaft) speed sensor, and the PCM, then recheck. If the HDS indicates NOT 
COMPLETED, return to step 7 and recheck. 

11. Clear the DTC with the HDS.  

12. Test-drive the vehicle in 3rd gear in D at speeds over 7 mph (12 km/h) with the engine speed at 1,000 

rpm or higher, for at least 12 seconds. Slow down and stop the wheels.  

13. Turn the ignition switch to LOCK (0). Repeat step 12, then go to step 14.  

14. Check for DTC(s) in the DTCs/Freeze Data in A/T Mode Menu with the HDS. 

Is DTC P0733 indicated?  

YES - Check for poor connections and loose terminals at the input shaft (mainshaft) speed sensor, the 
output shaft (countershaft) speed sensor, and the PCM, then go to step 1. 

NO - Go to step 15. 

15. Monitor the OBD STATUS for P0733 in the DTCs/Freeze Data in A/T Mode Menu for a pass/fail. 

Does the HDS indicate PASSED?  

YES - Troubleshooting is complete. If any other DTCs were indicated on step 14, go to the INDICATED 
DTCS TROUBLESHOOTING. 

NO - Check for poor connections and loose terminals at the input shaft (mainshaft) speed sensor, the 
output shaft (countershaft) speed sensor, and the PCM, then go to step 4. If the HDS indicates NOT 
COMPLETED, return to step 12 and recheck. 

DTC P0734: Problem in 4th Clutch and 4th Clutch Hydraulic Circuit 

1. Warm up the engine to normal operating temperature (the radiator fan comes on).  

2. Make sure that the transmission is filled to the proper level, and check for fluid leaks.  

3. Drain the ATF (see step 4 ) through a strainer. Inspect the strainer for metal debris or excessive clutch 

material. 

Does the strainer have metal debris or excessive clutch material?  

YES - Replace the transmission, then go to step 11.

NOTE:

Before you troubleshoot, record all freeze data and any on-board snapshot, and 
review General Troubleshooting Information (see GENERAL 
TROUBLESHOOTING INFORMATION ).

 

2007 Acura RL 

2005-08 TRANSMISSION Automatic Transmission - RL

  

me 

 

Friday, June 05, 2009 1:18:12 PM

Page 151 

© 2005 Mitchell Repair Information Company, LLC. 

NO - Replace the ATF (see step 6 ), then go to step 4.

4. Measure the line pressure (see PRESSURE TEST ). 

Is the line pressure within the service limits?  

YES - Go to step 5. 

NO - Repair the ATF pump and the regulator valve, or replace the transmission, then go to step 11. 

5. Measure the 4th clutch pressure (see PRESSURE TEST ). 

Is the 4th clutch pressure within the service limits?  

YES - Go to step 6. 

NO - Shift valves A, B, C, and D are stuck. Repair these valves and the hydraulic circuit, or replace the 
transmission, then go to step 11. 

6. Clear the DTC with the HDS.  

7. Test-drive the vehicle in 4th gear in D at speeds over 7 mph (12 km/h) with the engine speed at 1,000 rpm 

or higher, for at least 12 seconds. Slow down and stop the wheels.  

8. Turn the ignition switch to LOCK (0). Repeat step 7, then go to step 9.  

9. Check for DTC(s) in the DTCs/Freeze Data in A/T Mode Menu with the HDS. 

Is DTC P0734 indicated?  

YES - Repair the 4th clutch, or replace the transmission, then go to step 11. 

NO - Go to step 10. 

10. Monitor the OBD STATUS for P0734 in the DTCs/Freeze Data in A/T Mode Menu for a pass/fail. 

Does the HDS indicate PASSED?  

YES - Intermittent failure, the system is OK at this time. If any other DTCs were indicated on step 9, go 
to the INDICATED DTCS TROUBLESHOOTING. 

NO - Check for poor connections and loose terminals at the input shaft (mainshaft) speed sensor, the 
output shaft (countershaft) speed sensor, and the PCM, then recheck. If the HDS indicates NOT 
COMPLETED, return to step 7 and recheck. 

11. Clear the DTC with the HDS.  

12. Test-drive the vehicle in 4th gear in D at speeds over 7 mph (12 km/h) with the engine speed at 1,000 rpm 

or higher, for at least 12 seconds. Slow down and stop the wheels. 

 

2007 Acura RL 

2005-08 TRANSMISSION Automatic Transmission - RL

  

me 

 

Friday, June 05, 2009 1:18:12 PM

Page 152 

© 2005 Mitchell Repair Information Company, LLC. 

13. Turn the ignition switch to LOCK (0). Repeat step 12, then go to step 14.  

14. Check for DTC(s) in the DTCs/Freeze Data in A/T Mode Menu with the HDS. 

Is DTC P0734 indicated?  

YES - Check for poor connections and loose terminals at the input shaft (mainshaft) speed sensor, the 
output shaft (countershaft) speed sensor, and the PCM, then go to step 1. 

NO - Go to step 15. 

15. Monitor the OBD STATUS for P0734 in the DTCs/Freeze Data in A/T Mode Menu for a pass/fail. 

Does the HDS indicate PASSED?  

YES - Troubleshooting is complete. If any other DTCs were indicated on step 14, go to the INDICATED 
DTCS TROUBLESHOOTING. 

NO - Check for poor connections and loose terminals at the input shaft (mainshaft) speed sensor, the 
output shaft (countershaft) speed sensor, and the PCM, then go to step 4. If the HDS indicates NOT 
COMPLETED, return to step 12 and recheck. 

DTC P0735: Problem in 5th Clutch and 5th Clutch Hydraulic Circuit 

1. Warm up the engine to normal operating temperature (the radiator fan comes on).  

2. Make sure that the transmission is filled to the proper level, and check for fluid leaks.  

3. Drain the ATF (see step 4 ) through a strainer. Inspect the strainer for metal debris or excessive clutch 

material. 

Does the strainer have metal debris or excessive clutch material?  

YES - Replace the transmission, then go to step 11. 

NO - Replace the ATF (see step 6 ), then go to step 4. 

4. Measure the line pressure (see PRESSURE TEST ). 

Is the line pressure within the service limits?  

YES - Go to step 5. 

NO - Repair the ATF pump and the regulator valve, or replace the transmission, then go to step 11.

NOTE:

Before you troubleshoot, record all freeze data and any on-board snapshot, and 
review General Troubleshooting Information (see GENERAL 
TROUBLESHOOTING INFORMATION ).

 

2007 Acura RL 

2005-08 TRANSMISSION Automatic Transmission - RL

  

me 

 

Friday, June 05, 2009 1:18:12 PM

Page 153 

© 2005 Mitchell Repair Information Company, LLC. 

5. Measure the 5th clutch pressure (see PRESSURE TEST ). 

Is the 5th clutch pressure within the service limits?  

YES - Go to step 6. 

NO - Shift valves A, B, C, and D are stuck. Repair these valves and the hydraulic circuit, or replace the 
transmission, then go to step 11. 

6. Clear the DTC with the HDS.  

7. Test-drive the vehicle in 5th gear in D at speeds over 7 mph (12 km/h) with the engine speed at 1,000 rpm 

or higher, for at least 12 seconds. Slow down and stop the wheels.  

8. Turn the ignition switch to LOCK (0). Repeat step 7, then go to step 9.  

9. Check for DTC(s) in the DTCs/Freeze Data in A/T Mode Menu with the HDS. 

Is DTC P0735 indicated?  

YES - Repair the 5th clutch, or replace the transmission, then go to step 11. 

NO - Go to step 10. 

10. Monitor the OBD STATUS for P0735 in the DTCs/Freeze Data in A/T Mode Menu for a pass/fail. 

Does the HDS indicate PASSED?  

YES - Intermittent failure, the system is OK at this time. If any other DTCs were indicated on step 9, go 
to the INDICATED DTCS TROUBLESHOOTING. 

NO - Check for poor connections and loose terminals at the input shaft (mainshaft) speed sensor, the 
output shaft (countershaft) speed sensor, and the PCM, then recheck. If the HDS indicates NOT 
COMPLETED, return to step 7 and recheck. 

11. Clear the DTC with the HDS.  

12. Test-drive the vehicle in 5th gear in D at speeds over 7 mph (12 km/h) with the engine speed at 1,000 rpm 

or higher, for at least 12 seconds. Slow down and stop the wheels.  

13. Turn the ignition switch to LOCK (0). Repeat step 12, then go to step 14.  

14. Check for DTC(s) in the DTCs/Freeze Data in A/T Mode Menu with the HDS. 

Is DTC P0735 indicated?  

YES - Check for poor connections and loose terminals at the input shaft (mainshaft) speed sensor, the 
output shaft (countershaft) speed sensor, and the PCM, then go to step 1. 

NO - Go to step 15. 

 

2007 Acura RL 

2005-08 TRANSMISSION Automatic Transmission - RL

  

me 

 

Friday, June 05, 2009 1:18:12 PM

Page 154 

© 2005 Mitchell Repair Information Company, LLC.