Content .. 107 108 109 110 ..

Acura RL. Manual - part 109

Courtesy of AMERICAN HONDA MOTOR CO., INC.

3. Turn the ignition switch ON (II).

4. Make sure the HDS communicates with the vehicle and the SRS unit. If it does not, troubleshoot the

DLC circuit (see '08 MODEL ).

5. Use the HDS to check for DTCs.

6. Read and record the DTC.

7. Turn the ignition switch OFF, then wait for 10 seconds.

8. Disconnect the HDS from the DLC.

9. Do the troubleshooting procedure for the DTC.

CLEAR THE DTC MEMORY WITH THE HDS

1. Make sure the ignition switch is OFF.

2. Connect the HDS to the data link connector (DLC) (A).

Fig. 35: Identifying Data Link Connector
Courtesy of AMERICAN HONDA MOTOR CO., INC.

3. Turn the ignition switch ON (II).

4. Make sure the HDS communicates with the vehicle and the SRS unit. If it does not, troubleshoot the

DLC circuit (see '08 MODEL ).

5. In the SRS MENU of the HDS, select SRS, then DTC to clear the DTC(s).

6. Turn the ignition switch OFF, then wait for 10 seconds.

7. Disconnect the HDS from the DLC.

CLEAR THE DTC MEMORY USING MES CONNECTOR WITHOUT THE HDS

Special Tools Required

SCS Service Connector 07PAZ-001010A

NOTE:

Make sure the battery is fully charged before you begin.

2007 Acura RL

2005-08 RESTRAINTS SRS (Supplemental Restraint System) - RL

Friday, June 05, 2009 2:21:55 PM

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To clear the DTC(s) from the SRS unit, use the HDS or the following procedure.

1. Make sure the ignition switch is OFF.

2. Connect the SCS service connector (A) to the yellow MES 2P connector (B). Do not use a jumper

wire.

Fig. 36: Identifying SCS Service Connector And Yellow MES 2P Connector
Courtesy of AMERICAN HONDA MOTOR CO., INC.

3. Turn the ignition switch ON (II).

4. The SRS indicator will come on for about 6 seconds, and then go off. Remove the SCS service

connector from the MES connector (2P) within 4 seconds after the indicator goes off.

5. The SRS indicator will come on again. Reconnect the SCS service connector to the MES connector

(2P) within 4 seconds after the indicator comes on.

6. When the SRS indicator goes off, remove the SCS service connector from the MES connector (2P)

within 4 seconds.

7. The SRS indicator blinks two times, indicating that the memory has been cleared.

8. Turn the ignition switch OFF, and wait for 10 seconds.

9. Turn the ignition switch ON (II) again. If the SRS indicator comes on for 6 seconds, and then goes

off, the system is OK.

TROUBLESHOOTING INTERMITTENT FAILURES

If there was a malfunction, but it does not recur, it will be stored in the memory as an intermittent failure,
and the SRS indicator may come on depending on this malfunction detected.

After checking the DTC, troubleshoot as follows:

1. Make sure the ignition switch is OFF.

NOTE:

Make sure the battery is fully charged before you begin.

NOTE:



Make sure the battery connections are good and the battery is fully
charged.



A faulty cable reel can cause intermittent connections related to the
driver's airbag.

2007 Acura RL

2005-08 RESTRAINTS SRS (Supplemental Restraint System) - RL

Friday, June 05, 2009 2:21:55 PM

Page 21

2. Connect the HDS to the data link connector (DLC).

3. Turn the ignition switch ON (II).

4. Make sure the HDS communicates with the vehicle and the SRS unit. If it does not communicate,

troubleshoot the DLC circuit (see '08 MODEL ).

5. In the SRS MENU on the HDS, select SRS, then DTC to clear the DTC(s).

6. Read the DTC (see "READING THE DTC").

7. Clear the DTC memory (see "CLEAR THE DTC MEMORY").

8. Set the parking brake, then start the engine, and let it idle.

9. The SRS indicator comes on for about 6 seconds and then goes off.

10. Shake the related wire harness and the connectors, and look for loose connections, terminal fit, and

poor grounds.

11. Take a test-drive (quick acceleration, quick braking, and cornering), turn the steering wheel fully left

and right, and hold it there for 5 to 10 seconds. If the problem recurs, the SRS indicator will come on.

12. If you cannot duplicate the concern, ask the client about the conditions when it occurred, or ask the

client to demonstrate the concern.

13. If you cannot duplicate the intermittent failure, the system is OK at this time.

OPDS UNIT INITIALIZATION

When a seat-back cover, front passenger's seat-back cushion, and/or OPDS unit is replaced, initialize the
OPDS by following the procedure.

1. Clear the DTC memory (see CLEAR THE DTC MEMORY WITH THE HDS ).

2. Make sure the front passenger's seat is dry. Set the seat-back in a normal position, and make sure there

is nothing on the seat.

3. Make sure the ignition switch is OFF and the MES connector is not shorted.

4. Connect the HDS to the data link connector (DLC) (A).

Fig. 37: Identifying Data Link Connector
Courtesy of AMERICAN HONDA MOTOR CO., INC.

NOTE:

A new (uninitialized) OPDS unit installed with a faulty OPDS sensor can
cause DTC 85-71.

2007 Acura RL

2005-08 RESTRAINTS SRS (Supplemental Restraint System) - RL

Friday, June 05, 2009 2:21:55 PM

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5. Turn the ignition switch ON (II).

6. From the HDS Main Menu, select SRS, then Misc Test, then Calibration. In the Calibration Menu,

select OPDS INITIALIZATION. Follow the screen prompts to initialize the OPDS.

7. Turn the ignition switch OFF.

8. Disconnect the HDS from the DLC.

FRONT PASSENGER'S WEIGHT SENSOR UNIT CALIBRATION

When you replace the front passenger's weight sensors or front passenger's weight sensor unit, calibrate
front passenger's weight sensor unit.

While calibrating the front passenger's weight sensor unit, observe these precautions:



Make sure all components of the front passenger's seat are correctly installed.



Make sure nothing is on or under the front passenger's seat.



Make sure there is nothing in the "front passenger's seat-back pocket.



Keep the windows closed.



Do all calibration procedures, except test-driving, in the service bay.



Make sure the vehicle is on level ground.



Keep the A/C and the heater off.



Do not touch the front passenger's seat until you are prompted to or when you have completed the
calibration.



Do not expose the front passenger's seat to sudden temperature changes.

1. Position the front passenger's seat to the rearmost position, adjust the seat height to the lowest

position, and adjust the recliner to the forward most position. Do not move the seat from this position.

2. Connect the HDS to the data link connector (DLC) (A).

Fig. 38: Identifying Data Link Connector
Courtesy of AMERICAN HONDA MOTOR CO., INC.

NOTE:

If the OPDS system fails to initialize after several attempts, replace the
OPDS sensor and retry. If the OPDS system continues to fail to
initialize, replace the OPDS unit.

2007 Acura RL

2005-08 RESTRAINTS SRS (Supplemental Restraint System) - RL

Friday, June 05, 2009 2:21:55 PM

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Content .. 107 108 109 110 ..