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Acura RL. Manual - part 273

Fig. 191: Identifying Data Link Connector
Courtesy of AMERICAN HONDA MOTOR CO., INC.

4. Make sure the A/C switch OFF.

5. After the engine has warmed up to normal operating temperature (the radiator fan comes on), shift to D.

6. Firmly press and hold the brake pedal, then fully press the accelerator pedal for 6 to 8 seconds, and note

the engine speed. Do not move the shift lever while raising the engine speed.

7. Allow 2 minutes for cooling, then repeat the test in R.

Stall Speed rpm:

Specification: 1,850 rpm

Service Limit: 1,700-2,000 rpm

8. If any of the stall speeds are out of the service limit, refer to the problems and probable causes listed in

the table.

PROBLEMS AND PROBABLE CAUSES

NOTE:



Do not test stall speed for more than 10 seconds at a time.



Record the engine speed at 6-8 seconds after pressing the
accelerator pedal. Higher engine speed will be indicated for 5
seconds.



Stall speed tests should be used for diagnostic purposes only.



The stall speed should be the same in D and R.



Do not test stall speed with the A/T pressure gauges installed.

Problem

Probable causes

Stall speed rpm high in D and R



ATF pump output low



Regulator valve stuck

2007 Acura RL

2005-08 TRANSMISSION Automatic Transmission - RL

Friday, June 05, 2009 1:18:13 PM

Page 263

PRESSURE TEST

Special Tools Required



A/T clutch pressure gauge set 07406-0020400 or 07406-0020401



A/T pressure hose, 2,210 mm 07MAJ-PY4011A



A/T pressure hose adapter 07MAJ-PY40120

1. Make sure the transmission fluid is filled to the proper level (see ATF LEVEL CHECK ).

2. Raise the vehicle on a lift, and make sure it is securely supported.

3. Allow all four wheels to rotate freely.

4. Remove the splash shield.

5. Connect the HDS to the DLC (A). If the HDS does not communicate with the PCM, troubleshoot the

DLC circuit; '05-07 models (see '05-07 MODELS ), '08 model (see '08 MODEL ).

Fig. 192: Identifying Data Link Connector
Courtesy of AMERICAN HONDA MOTOR CO., INC.

6. Connect the oil pressure gauge to the line pressure inspection port (A). Do not allow dust or other foreign

particles to enter the hole while connecting the gauge.



Slipping clutch

Stall speed rpm high in R

Slippage of 5th clutch

Stall speed rpm low in D and R



Engine output low



Engine throttle valve closed



Torque converter one-way clutch slipping

2007 Acura RL

2005-08 TRANSMISSION Automatic Transmission - RL

Friday, June 05, 2009 1:18:13 PM

Page 264

Fig. 193: Identifying Line Pressure Inspection Port And A/T Oil Pressure Gauge Set
Courtesy of AMERICAN HONDA MOTOR CO., INC.

7. Warm up the engine (the radiator fan comes on), then stop it.

8. Start the engine, and run it at 2,000 rpm in P or N.

9. Measure the line pressure at the line pressure inspection port (A).

FLUID PRESSURE SPECIFICATION

10. Turn the engine off, then disconnect the oil pressure gauge from the line pressure inspection port.

11. Install the sealing bolt to the line pressure inspection port with the new sealing washer, and tighten the

bolt to 18 N.m (1.8 kgf.m, 13 lbf.ft). Do not reuse the old sealing washer.

NOTE:

Higher pressure may be indicated if measurements are made in the shift
lever positions other than P or N.

Pressure

Fluid Pressure

Standard

Service Limit

Line (A)

950-1,010 kPa (9.7-10.3 kgf/cm

140-146 psi)

900 kPa (9.2 kgf/cm

, 130 psi)

2007 Acura RL

2005-08 TRANSMISSION Automatic Transmission - RL

Friday, June 05, 2009 1:18:13 PM

Page 265

12. Connect the oil pressure gauge to the 1st clutch pressure inspection port (B) and the 1st-hold clutch

pressure inspection port (C).

Fig. 194: Identifying 1st Clutch Pressure Inspection Port And 1st-Hold Clutch Pressure Inspection
Port
Courtesy of AMERICAN HONDA MOTOR CO., INC.

13. Remove the air cleaner (see AIR CLEANER REMOVAL/INSTALLATION ), and connect the oil

pressure gauge to the 2nd clutch pressure inspection port (D). Then temporarily install the air cleaner.

Fig. 195: Identifying 2nd Clutch Pressure Inspection Port
Courtesy of AMERICAN HONDA MOTOR CO., INC.

14. Start the engine, and shift into M.

15. Shift to 1st gear, and measure the 1st clutch pressure at the 1st clutch pressure inspection port and the 1st-

hold clutch pressure at the 1st-hold clutch pressure inspection port while holding the engine speed at
2,000 rpm.

16. Shift up to 2nd gear, and measure the 2nd clutch pressure at the 2nd clutch pressure inspection port while

holding the engine speed at 2,000 rpm.

FLUID PRESSURE SPECIFICATION

2007 Acura RL

2005-08 TRANSMISSION Automatic Transmission - RL

Friday, June 05, 2009 1:18:13 PM

Page 266

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