Acura RL. Instruction — page 167

Is the resistance as specified?

YES — Check for a faulty SRS unit or passenger’s airbag cutoff indicator; replace the passenger’s
airbag cutoff indicator. If the problem is still present, replace the SRS unit (see SRS UNIT
REPLACEMENT
).

NO — Short to ground in dashboard wire harness A; replace dashboard wire harness A.

DTC A1-1X («X» CAN BE 0 THRU 9 OR A THRU F): FAULTY POWER SUPPLY (VA LINE)

1. 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 2.

NO — Short to ground in the under-dash fuse/relay box No.10 (7.5 A) fuse circuit.

2. Turn the ignition switch ON (II) and wait for 30 seconds. Then turn the ignition switch OFF.

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

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

5. Reconnect the negative cable to the battery.

6. Measure the voltage between the No. 17 terminal of SRS unit connector A (28P) and body ground.

Turn the ignition switch ON (II), and measure the voltage. There should be battery voltage.

Fig. 348: Measuring Voltage Between No. 17 Terminal Of SRS Unit Connector A (28P) And
Body Ground

Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is there battery voltage?

YES — Faulty SRS unit or poor contact at SRS unit connector A (28P) and the SRS unit; check the

NOTE:

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

me

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

Page 252 © 2005 Mitchell Repair Information Company, LLC.

connection. If the connection is OK, replace the SRS unit (see SRS UNIT REPLACEMENT ).

NO — Go to step 7.

7. Turn the ignition switch OFF.

8. Disconnect driver’s under-dash fuse/relay box connector S (2P).

Fig. 349: Identifying Driver’s Under-Dash Fuse/Relay Box Connector S (2P)
Courtesy of AMERICAN HONDA MOTOR CO., INC.

9. Measure the resistance between the No. 1 terminal of driver’s under-dash fuse/relay box connector S

(2P) and the No. 17 terminal of SRS unit connector A (28P). There should be 0-1.0 ohms.

Fig. 350: Measuring Resistance Between No. 1 Terminal Of Driver’s Under-Dash Fuse/Relay
Box Connector S (2P) And No. 17 Terminal Of SRS Unit Connector A (28P)

Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is the resistance as specified?

YES — Open in the driver’s under-dash fuse/relay box or poor connection between connector S (2P)
and the driver’s under-dash fuse/relay box; check the connection. If the connection is OK, replace the
driver’s under-dash fuse/relay box.

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

DTC A2-1X («X» CAN BE 0 THRU 9 OR A THRU F): FAULTY POWER SUPPLY (VB LINE)

2007 Acura RL

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

me

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

Page 253 © 2005 Mitchell Repair Information Company, LLC.

1. Check the No. 22 (10 A) fuse in the driver’s under-dash fuse/relay box.

Is the fuse OK?

YES — Go to step 11.

NO — Go to step 2.

2. Replace the No. 22(10 A) fuse.

3. Turn the ignition switch ON (II), and wait for 30 seconds. Then turn the ignition switch OFF.

4. Check the No. 22 (10 A) fuse.

Is the fuse OK?

YES — The system is OK at this time.

NO — Go to step 5.

5. Replace the No. 22 (10 A) fuse.

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

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

8. Reconnect the negative cable to the battery.

9. Turn the ignition switch ON (II) and wait for 30 seconds. Then turn the ignition switch OFF.

10. Check the No. 22 (10 A) fuse.

Is the fuse OK?

YES — Short to ground in the SRS unit; replace the SRS unit (see SRS UNIT REPLACEMENT ).

NO — Short to ground in dashboard wire harness A or in the driver’s under-dash fuse/relay box No. 22
(10 A) fuse circuit; replace dashboard wire harness A. If the problem is still present, replace the
driver’s under-dash fuse/relay box.

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

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

13. Reconnect the negative cable to the battery.

14. Turn the ignition switch ON (II).

15. Measure the voltage between the No. 18 terminal of SRS unit connector A (28P) and body ground.

There should be battery voltage.

NOTE:

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

me

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

Page 254 © 2005 Mitchell Repair Information Company, LLC.

Fig. 351: Measuring Voltage Between No. 18 Terminal Of SRS Unit Connector A (28P) And
Body Ground

Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is there battery voltage?

YES — Faulty SRS unit or poor contact at SRS unit connector A (28P) and the SRS unit; check the
connection. If the connection is OK, replace the SRS unit (see SRS UNIT REPLACEMENT ).

NO — Go to step 16.

16. Turn the ignition switch OFF.

17. Disconnect under-dash fuse/relay box connector S (2P).

Fig. 352: Identifying Under-Dash Fuse/Relay Box Connector S (2P)
Courtesy of AMERICAN HONDA MOTOR CO., INC.

18. Measure the resistance between the No. 2 terminal of driver’s under-dash fuse/relay box connector S

(2P) and the No. 18 terminal of SRS unit connector A (28P). There should be 0-1.0 ohms.

2007 Acura RL

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

me

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

Page 255 © 2005 Mitchell Repair Information Company, LLC.

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