Acura RL. Manual - part 213

debris. If no cause for the 
contamination is found, 
replace the torque converter.  



Inspect the reverse selector 
gear teeth chamfers, and 
inspect the engagement teeth 
chamfers of the countershaft 
5th gear and the reverse gear. 
Replace the reverse gears and 
the reverse selector if they are 
worn or damaged. If the 
transmission makes clicking, 
grinding, or whirring noises, 
also replace the mainshaft 5th 
gear, reverse idler gear, and 
the countershaft 5th gear.  



Inspect the clutch piston, 
clutch piston check valve, and 
the O-rings. Check the spring 
retainer for wear and damage. 
Inspect the clearance between 
the clutch end-plate and the 
top disc. If the clearance is out 
of tolerance, inspect the clutch 
discs and plates for wear and 
damage, and inspect the 
clutch wave-plate height. If 
the discs and the flat-plates 
are worn or damaged, replace 
the discs and the flat-plates as 
a set. If the wave-plate height 
is out of tolerance, replace the 
wave-plate. If the discs and 
plates are OK, adjust the 
clearance with the clutch end-
plate.  

Poor acceleration; flares when 
starting off in D and R; stall 
speed high in R

1. Low ATF level  

2. Shift cable broken or out of 

adjustment  

3. ATF pump worn or binding 

4. Regulator valve stuck or 

spring worn  

5. ATF strainer clogged  

6. Torque converter check 

valve defective  



Check the ATF level and 
check the ATF cooler lines for 
leakage and loose 
connections. If necessary, 
clean the ATF cooler lines.  



Check for a loose shift cable 
at the shift lever and the 
transmission control lever.  



Check the line pressure.  

 

2007 Acura RL 

2005-08 TRANSMISSION Automatic Transmission - RL

  

me 

 

Friday, June 05, 2009 1:18:10 PM

Page 23 

© 2005 Mitchell Repair Information Company, LLC. 



Check the ATF strainer for 
debris. If the strainer is 
clogged, find the damaged 
components that caused the 
debris.  



Improper alignment of the 
ATF pump and the torque 
converter housing may cause 
the ATF pump seizure. The 
symptom is mostly an rpm-
related ticking noise or a high 
pitched squeak.  



Be careful not to damage the 
torque converter housing 
when replacing the main ball 
bearing. You may also 
damage the ATF pump when 
you torque down the main 
valve body. This will result in 
the ATF pump seizure if not 
detected. Use the proper tools. 

Poor acceleration; flares when 
starting off in D, D3, and R; stall 
speed high in D and D3

1. 1st accumulator defective  

2. 1st clutch defective  



Check the 1st clutch pressure. 



Inspect the clutch piston, 
clutch piston check valve, and 
the O-rings. Check the spring 
retainer for wear and damage. 
Inspect the clearance between 
the clutch end-plate and the 
top disc. If the clearance is out 
of tolerance, inspect the clutch 
discs and the plates for wear 
and damage, and inspect the 
clutch wave-plate height. If 
the discs and the flat-plates 
are worn or damaged, replace 
the discs and the flat-plates as 
a set. If the wave-plate height 
is out of tolerance, replace the 
wave-plate. If the discs and 
the plates are OK, adjust the 
clearance with the clutch end-
plate.  

Poor acceleration; flares when 
starting off in D, D3, and R; stall 
speed high in R

1. Shift solenoid valve C 

defective  

2. Shift cable broken or out of 



Check for a stored DTC, and 
check for loose connectors. 
Inspect the O-ring, and check 

 

2007 Acura RL 

2005-08 TRANSMISSION Automatic Transmission - RL

  

me 

 

Friday, June 05, 2009 1:18:10 PM

Page 24 

© 2005 Mitchell Repair Information Company, LLC. 

adjustment  

3. Reverse CPC valve 

defective  

4. 5th accumulator defective  

5. 5th clutch defective  

the shift solenoid valve 
seizure.  



Check for a loose shift cable 
at the shift lever and the 
transmission control lever.  



Check the 5th clutch pressure. 



Inspect the clutch piston, 
clutch piston check valve, and 
the O-rings. Check the spring 
retainer for wear and damage. 
Inspect the clearance between 
the clutch end-plate and the 
top disc. If the clearance is out 
of tolerance, inspect the clutch 
discs and the plates for wear 
and damage, and inspect the 
clutch wave-plate height. If 
the discs and the flat-plates 
are worn or damaged, replace 
the discs and the flat-plates as 
a set. If the wave-plate height 
is out of tolerance, replace the 
wave-plate. If the discs and 
plates are OK, adjust the 
clearance with the clutch end-
plate.  

Poor acceleration; flares when 
starting off in D5, D4, D3, and 
R; stall speed low

1. Shift solenoid valve D 

defective  

2. Torque converter one-way 

clutch defective  

3. Engine output low  

4. Torque converter clutch 

piston defective  

5. Lock-up shift valve 

defective  

Check for a stuck lock-up valve in 
the valve body.

Engine idle vibration

1. Low ATF level  

2. Torque converter clutch 

solenoid valve defective  

3. Drive plate defective or 

transmission misassembled  

4. Engine output low  

5. Torque converter clutch 

piston defective  



Adjust the engine and the 
transmission mounts.  



Check the ATF level and 
check the ATF cooler lines for 
leakage and loose 
connections. If necessary, 
clean the ATF cooler lines.  

 

2007 Acura RL 

2005-08 TRANSMISSION Automatic Transmission - RL

  

me 

 

Friday, June 05, 2009 1:18:10 PM

Page 25 

© 2005 Mitchell Repair Information Company, LLC. 

6. ATF pump worn or binding 

7. Lock-up shift valve 

defective  

Vehicle moves in N

1. Excessive ATF  

2. Foreign material in 

separator plate orifice  

3. Relief valve defective  

4. Lubrication control valve 

defective  

5. 1st-hold clutch defective  

6. 1st clutch defective  

7. 2nd clutch defective  

8. 3rd clutch defective  

9. 4th clutch defective  

10. 5th clutch defective  

11. Clutch end-plate clearance 

incorrect  

12. Needle bearing seized up, 

worn, or damaged  

13. Thrust washer seized up, 

worn, or damaged  



Check the ATF level, and 
drain the ATF if necessary.  



Check all clutch pressures.  



Inspect the clutch piston, 
clutch piston check valve, and 
the O-rings. Check the spring 
retainer for wear and damage. 
Inspect the clearance between 
the clutch end-plate and the 
top disc. If the clearance is out 
of tolerance, inspect the clutch 
discs and plates for wear and 
damage, and inspect the 
clutch wave-plate height. If 
the discs and flat-plates are 
worn or damaged, replace the 
discs and flat-plates as a set. If 
the wave-plate height is out of 
tolerance, replace the wave-
plate. If the discs and plates 
are OK, adjust the clearance 
with the clutch end-plate.  

Late shift after shifting from N 
to D or D3, or excessive shock 
when shifting

1. Shift solenoid valve C 

defective  

2. A/T clutch pressure control 

solenoid valve A defective  

3. A/T clutch pressure control 

solenoid valve B defective  

4. A/T clutch pressure control 

solenoid valve C defective  

5. Shift cable broken or out of 

adjustment  

6. Connection between shift 

cable and transmission or 
body is worn  

7. Input shaft (mainshaft) 

speed sensor defective  

8. Output shaft (countershaft) 

speed sensor defective  

9. ATF temperature sensor 



Check for a stored DTC, and 
check for loose connectors.  



Inspect the O-ring, and check 
the shift solenoid valve for 
seizure.  



Inspect the A/T clutch 
pressure control solenoid 
valve body gasket and the 
ATF feed pipes for wear and 
damage. If the A/T clutch 
pressure control solenoid 
valve is stuck, inspect the 
CPC valves.  



Check for a loose shift cable 
at the shift lever and the 
transmission control lever.  



Check the 1st clutch pressure. 



Inspect the clutch piston, 
clutch piston check valve, and 

 

2007 Acura RL 

2005-08 TRANSMISSION Automatic Transmission - RL

  

me 

 

Friday, June 05, 2009 1:18:10 PM

Page 26 

© 2005 Mitchell Repair Information Company, LLC.