Acura RL. Instruction — page 154

Is the resistance as specified ?

YES — Go to step 13.

NO — Open in the driver’s seat wire harness or left side wire harness; replace the faulty harness.

13. Measure the resistance between the No, 11 terminal of SRS unit connector B (28P) and the No. 2

terminal of the driver’s seat wire harness 3P connector. There should be 0-1 ohms.

Fig. 273: Measuring Resistance Between No, 11 Terminal Of SRS Unit Connector B (28P) And
No. 2 Terminal Of Driver’s Seat Wire Harness 3P Connector

Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is the resistance as specified?

YES — Faulty SRS unit; replace the SRS unit (see SRS UNIT REPLACEMENT ).

NO — Open in the driver’s seat wire harness, left side wire harness, or the driver’s under-dash
fuse/relay box, or poor connection at the left side wire harness. Check the connection at the left side
wire harness and the driver’s under-dash fuse/relay box. If the connection is OK, replace the faulty
harness or part.

DTC 61-2X («X» CAN BE 0 THRU 9 OR A THRU F): SHORT IN DRIVER’S SEAT BELT
BUCKLE SWITCH

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

2. Turn the ignition switch ON (II), then buckle and unbuckle the left side seat belt several times.

3. Read the DTC (see GENERAL TROUBLESHOOTING INFORMATION ).

Is DTC 61-2x indicated?

NOTE:

This code may inadvertently be set if power from fuse 21 (METER IG) is
lost. If this is the case, clear the code and confirm that the SRS
indicator does not come back on before proceeding.

Before doing this troubleshooting procedure, review SRS Precautions
and Procedures (see PRECAUTIONS AND PROCEDURES ) and General
Troubleshooting Information (see GENERAL TROUBLESHOOTING
INFORMATION ).

2007 Acura RL

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

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Page 200 © 2005 Mitchell Repair Information Company, LLC.

YES — Go to step 4.

NO — Intermittent failure, the system is OK at this time. Go to TROUBLESHOOTING
INTERMITTENT FAILURES
. If another DTC is indicated, troubleshoot the DTC.

4. Check the No. 21 (10 A) fuse in the driver’s under-dash fuse/relay box.

Is the fuse OK?

YES — Go to step 5.

NO — Short to ground in the driver’s under-dash fuse/relay box No. 21 (10 A) fuse circuit. After No.
21 (10 A) fuse is replaced, clear the DTC memory.

5. Turn the ignition switch OFF.

6. Disconnect the left side wire harness or driver’s seat wire harness 3P connector from the driver’s seat

belt buckle switch 3P connector (A).

Fig. 274: Identifying Driver’s Seat Belt Buckle Switch 3P Connector
Courtesy of AMERICAN HONDA MOTOR CO., INC.

7. Buckle the driver’s seat belt.

Measure the resistance between the No. 1 and No. 3 terminals of the left side seat belt buckle
switch 3P connector. There should be 0-1 ohms.

Measure the resistance between the No. 2 and No. 3 terminals of the same connector. There
should be an open circuit or at least 1Mohms.

2007 Acura RL

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

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Page 201 © 2005 Mitchell Repair Information Company, LLC.

Fig. 275: Measuring Resistance Between No. 1 and No. 3 [No. 2 And No. 3] Terminals Of
Same Connector

Courtesy of AMERICAN HONDA MOTOR CO., INC.

Are the resistances as specified?

YES — Go to step 8.

NO — Replace the driver’s seat belt buckle assembly (see SEAT BELT BUCKLE ), then clear the
DTC.

8. Unbuckle the driver’s seat belt.

Measure the resistance between the No. 2 and No. 3 terminals of the driver’s seat belt buckle
switch 3P connector. There should be 0-1 ohms.

Measure the resistance between the No. 1 and No. 3 terminals of the same connector. There
should be an open circuit or at least 1 M ohms.

Fig. 276: Measuring Resistance Between No. 2 and No. 3 [No. 1 And No. 3] Terminals Of
Same Connector

Courtesy of AMERICAN HONDA MOTOR CO., INC.

Are the resistances as specified?

YES — Go to step 9.

2007 Acura RL

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

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Page 202 © 2005 Mitchell Repair Information Company, LLC.

NO — Replace the driver’s seat belt buckle assembly (see SEAT BELT BUCKLE ), then clear the
DTC.

9. Measure the resistance between the No. 1 terminal of the driver’s seat belt buckle switch 3P connector

and body ground, and between the No. 2 terminal and body ground. There should be an open circuit
or at least 1 M ohms.

Fig. 277: Measuring Resistance Between No. 1 [No. 2] Terminal Of Driver’s Seat Belt Buckle
Switch 3P Connector And Body Ground

Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is the resistance as specified?

YES — Go to step 10.

NO — Replace the driver’s seat belt buckle assembly (see SEAT BELT BUCKLE ).

10. Disconnect the negative cable from the battery, then wait for 3 minutes.

11. Disconnect both seat belt tensioner 4P connectors from the left side wire harness and right side wire

harness (see step 6 ).

12. Disconnect SRS unit connector B (28P) from the SRS unit (see step 7 ).

13. Measure the resistance between the No: 2 terminal of the driver’s seat wire harness 3P connector and

body ground. There should be an open circuit or at least 1Mohms.

Fig. 278: Measuring Resistance Between No. 2 Terminal Of Driver’s Seat Wire Harness 3P

NOTE:

Some resistance will be read by some meters since the MICU also
monitors the seat belt buckle switch.

2007 Acura RL

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

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Friday, June 05, 2009 2:21:57 PM

Page 203 © 2005 Mitchell Repair Information Company, LLC.

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