Acura RL. Instruction — page 170

8. Turn the ignition switch ON (II).

9. Measure the voltage between the No. 12 terminal of gauge control module connector A (20P) and

body ground. There should be 0.5 V or less.

Fig. 366: Measuring Voltage Between No. 12 Terminal Of Gauge Control Module Connector A
(20P) And Body Ground

Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is the voltage as specified?

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

NO — Short to power in the dashboard wire harness A or junction connector; replace dashboard wire
harness A.

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

Is the fuse blown?

YES — Go to step 13.

NO — Go to step 11.

11. Turn the ignition switch ON (II).

12. Measure the voltage between the No. 1 terminal of gauge control module connector B (28P) and body

ground. There should be battery voltage.

Fig. 367: Measuring Voltage Between No. 1 Terminal Of Gauge Control Module Connector B
(28P) And Body Ground

2007 Acura RL

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

me

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Page 264 © 2005 Mitchell Repair Information Company, LLC.

Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is there battery voltage?

YES — Faulty SRS indicator circuit in the gauge control module or poor connection at gauge control
module connector B (28P) and the gauge control module; if the connection is OK, replace the gauge
control module.

NO — Open in the driver’s under-dash fuse/relay box No. 21 (10 A) fuse circuit, or open in the PNK
wire of dashboard wire harness A or junction connector. If the driver’s under-dash fuse/relay box is
OK, replace dashboard wire harness A.

13. Replace the No. 21 (10 A) fuse, then check to see if the indicators come on.

Do the indicators come on?

YES — The system is OK at this time.

NO — Repair the short to ground in the driver’s under-dash fuse/relay box No. 21 (10 A) fuse circuit.

SRS INDICATOR STAYS ON, BUT NO DTCS ARE STORED

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

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

3. Remove the gauge control module (see GAUGE CONTROL MODULE REPLACEMENT ).

Disconnect gauge control module connector A (20P) from the gauge control module.

Fig. 368: Identifying Gauge Control Module Connector A (20P) And Connector B (28P)
Courtesy of AMERICAN HONDA MOTOR CO., INC.

NOTE:

A new SRS unit must sense the entire system is OK before completing
its initial self-test. The most common cause of an incomplete self-test is
the failure to replace all deployed parts after a collision, in particular
seat belt tensioners (see AIRBAG AND TENSIONER DISPOSAL ).

A battery/system voltage above 15.2 V can cause the SRS indicator to
come on without storing any DTCs.

2007 Acura RL

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

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Page 265 © 2005 Mitchell Repair Information Company, LLC.

4. Measure the resistance between the No. 12 terminal of gauge control module connector A (20P) and

the No. 11 terminal of SRS unit connector A (28P). There should be 0-1 ohms.

Fig. 369: Measuring Resistance Between No. 12 Terminal Of Gauge Control Module Connector
A (20P) And No. 11 Terminal Of SRS Unit Connector A (28P)

Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is the resistance as specified?

YES — Go to step 5.

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

5. Reconnect the negative cable to the battery.

6. Reconnect gauge control module connector A (20P) to the gauge control module.

7. Turn the ignition switch ON (II).

8. Install a jumper wire between the No. 12 terminal of gauge control module connector A (20P) and the

No. 1 terminal of gauge control module connector B (28P). The SRS indicator should go off.

Fig. 370: Installing Jumper Wire Between No. 12 Terminal Of Gauge Control Module
Connector A (20P) And No. 1 Terminal Of Gauge Control Module Connector B (28P)

Courtesy of AMERICAN HONDA MOTOR CO., INC.

Does the SRS indicator go off?

2007 Acura RL

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

me

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

Page 266 © 2005 Mitchell Repair Information Company, LLC.

YES — Faulty SRS unit or poor connection 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 — Faulty SRS indicator circuit in the gauge control module or poor connection at gauge control
module connector A or B; check the connection. If the connection is OK, replace the gauge control
module.

COMPONENT REPLACEMENT/INSPECTION AFTER DEPLOYMENT

After a collision where the seat belt tensioners deployed, replace these items:

SRS unit

Seat belt tensioners

Front impact sensors

After a collision where the front airbag(s) deployed, replace these items:

SRS unit

Deployed airbag(s)

Seat belt tensioners

Front impact sensors

After a collision where the side airbag(s) deployed, replace these items:

SRS unit

Deployed side airbag(s)

Reinforcing cloth rear hooks

Side impact sensor(s) (first) for the side(s) that deployed

Side impact sensor(s) (second) for the side(s) that deployed

6-pillar lower trim

After a collision, where a side curtain airbag has deployed, replace the items for the side(s) that deployed:

SRS unit

Deployed side curtain airbag(s)

Seat belt tensioner(s) for the side(s) that deployed

Side impact sensor(s) (first) for the side(s) that deployed

NOTE:

Before doing any SRS repairs, use the HDS SRS menu method to check
for DTCs; refer to the DTC TROUBLESHOOTING INDEX for the less
obvious deployed parts (seat belt tensioners, front impact sensors,
side airbag sensors, etc.).

After a vehicle collision, do the front passenger’s weight sensor unit
operation check (see FRONT PASSENGER’S WEIGHT SENSOR UNIT
OPERATION CHECK ).

2007 Acura RL

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

me

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

Page 267 © 2005 Mitchell Repair Information Company, LLC.

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