Acura RL. Instruction — page 163

Is DTC 85-61 indicated?

YES — Go to step 7.

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

7. Turn the ignition switch OFF.

8. Check the No. 10 (7.5 A) fuse in the driver’s under-dash fuse/relay box.

Is the fuse OK?

YES — Go to step 9.

NO — Replace the fuse, then turn the ignition switch ON (II). If the fuse blows again, check for a short
in the No. 10 (7.5 A) fuse circuit (dashboard wire harness A, right side wire harness, or OPDS unit
harness).

9. Disconnect the OPDS unit harness 8P connector (A) from the OPDS unit.

Fig. 324: Identifying OPDS Unit And 8P Connector
Courtesy of AMERICAN HONDA MOTOR CO., INC.

10. Turn the ignition switch ON (II).

11. Measure the voltage between the No. 4 terminal of the OPDS unit harness 8P connector and body

ground. There should be battery voltage.

Fig. 325: Measuring Voltage Between No. 4 Terminal Of OPDS Unit Harness 8P Connector And

2007 Acura RL

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

me

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

Page 236 © 2005 Mitchell Repair Information Company, LLC.

Body Ground
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is there battery voltage?

YES — Go to step 16.

NO — Go to step 12.

12. Turn the ignition switch OFF.

13. Disconnect dashboard wire harness A 34P connector C651 (A) from the right side wire harness C651

(B).

Fig. 326: Identifying Dashboard Wire Harness A 34P Connector C651 (A) And Right Side Wire
Harness C651 (B)

Courtesy of AMERICAN HONDA MOTOR CO., INC.

14. Turn the ignition switch ON (II).

15. Measure the voltage between the No. 34 terminal of dashboard wire harness A 34P connector C651

and body ground. There should be battery voltage.

Fig. 327: Measuring Voltage Between No. 34 Terminal Of Dashboard Wire Harness A 34P
Connector C651 And Body Ground

Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is there battery voltage?

2007 Acura RL

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

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Page 237 © 2005 Mitchell Repair Information Company, LLC.

YES — Open in the right side wire harness or OPDS unit harness; replace the faulty harness.

NO — Open in the dashboard wire harness A; replace dashboard wire harness A.

16. Turn the ignition switch OFF.

17. Measure the resistance between the No. 8 terminal of the OPDS unit harness 8P connector and body

ground. There should be 0-1.0 ohms.

Fig. 328: Measuring Resistance Between No. 8 Terminal Of OPDS Unit Harness 8P Connector
And Body Ground

Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is the resistance as specified?

YES — Go to step 18.

NO — Open in the OPDS unit harness or right side wire harness; replace the faulty harness.

18. Turn the ignition switch OFF. Disconnect the negative cable from the battery, then wait for 3 minutes.

19. Disconnect SRS unit connector A (28P) from the SRS unit (see step 7 ).

20. Measure the resistance between the No. 14 terminal of SRS unit connector A (28P) and body ground.

There should be an open circuit or at least 1 M ohms.

Fig. 329: Measuring Resistance Between No. 14 Terminal Of SRS Unit Connector A (28P) And
Body Ground

Courtesy of AMERICAN HONDA MOTOR CO., INC.

2007 Acura RL

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

me

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Page 238 © 2005 Mitchell Repair Information Company, LLC.

Is the resistance as specified?

YES — Go to step 21.

NO — Go to step 24.

21. Measure the resistance between the No. 14 terminal of SRS unit connector A (28P) and the No. 7

terminal of the OPDS unit harness 8P connector. There should be 0-1.0 ohms.

Fig. 330: Measuring Resistance Between No. 14 Terminal Of SRS Unit Connector A (28P) And
No. 7 Terminal Of OPDS Unit Harness 8P Connector

Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is the resistance as specified?

YES — Faulty OPDS unit or SRS unit; replace the OPDS unit (see OPDS UNIT REPLACEMENT ).
If the problem is still present, replace the SRS unit (see SRS UNIT REPLACEMENT ).

NO — Go to step 22.

22. Disconnect the right side wire harness 4P connector C801 (A) from the OPDS unit harness.

Fig. 331: Identifying Right Side OPDS Unit And 4P Connector
Courtesy of AMERICAN HONDA MOTOR CO., INC.

2007 Acura RL

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

me

Friday, June 05, 2009 2:21:58 PM

Page 239 © 2005 Mitchell Repair Information Company, LLC.

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