Acura RL. Manual - part 151

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

2. Turn the ignition switch ON (II), and check that the SRS indicator comes on for about 6 seconds and

then goes off.

Does the SRS indicator stay on, and is DTC 45-Cx indicated?

YES - Go to step 3.

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

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

4. Disconnect the left side wire harness 2P connector (A) from the left side impact sensor (second).

Fig. 256: Identifying Left Side Impact Sensor (Second) And 2P Connector
Courtesy of AMERICAN HONDA MOTOR CO., INC.

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

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

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

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

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

Fig. 257: Measuring Resistance Between No. 17 Terminal Of SRS Unit Connector C (28P) And
Body Ground
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is the resistance as specified?

YES - Go to step 7.

NO - Short to ground in the left side wire harness or right side wire harness; replace the faulty
harness.

7. Measure the resistance between the No. 17 and No. 18 terminals of SRS unit connector C (28P).

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

Fig. 258: Measuring Resistance Between No. 17 And No. 18 Terminals Of SRS Unit Connector
C (28P)
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is the resistance as specified?

YES - Faulty left side impact sensor (second) or SRS unit; replace the sensor (second) (see SIDE
IMPACT SENSOR (SECOND) REPLACEMENT ). If the problem is still present, replace the SRS
unit (see SRS UNIT REPLACEMENT ).

NO - Short in the left side wire harness or right side wire harness; replace the faulty harness.

DTC 46-1X ("X" CAN BE 0 THRU 9 OR A THRU F): NO SIGNAL FROM THE RIGHT SIDE
IMPACT SENSOR (SECOND)

Special Tools Required



SRS inflator simulator 07SAZ-TB4011A



SRS simulator lead H 07YAZ-S3AA100

NOTE:

2007 Acura RL

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

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

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

2. Turn the ignition switch ON (II), and check that the SRS indicator comes on for about 6 seconds and

then goes off.

Does the SRS indicator stay on, and is DTC 46-1 x indicated?

YES - Go to step 3.

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

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

4. Check the connections between SRS unit connector C (28P) and the SRS unit, between the right side

wire harness 2P connector and the right side impact sensor (second) (see COMPONENT
LOCATION INDEX ), at right side wire harness 16P connector C655 and left side wire harness
connector C655 (see LEFT SIDE WIRE HARNESS (REAR BRANCH) ), at left side wire harness
16P connector C604 and right side wire harness connector C604 (see LEFT SIDE WIRE
HARNESS (FRONT BRANCH) ).

Are the connections OK?

YES - Go to step 5.

NO - Repair the poor connections and retest. If the DTC 46-1x is still present, go to step 5.

5. Disconnect the right side wire harness 2P connector (A) from the right side impact sensor (second).

Fig. 259: Identifying Right Side Impact Sensor (Second) And 2P Connector
Courtesy of AMERICAN HONDA MOTOR CO., INC.

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

7. Measure the resistance between the No. 19 and No. 20 terminals of SRS unit connector C (28P).

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

2007 Acura RL

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

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

Fig. 260: Measuring Resistance Between No. 19 And No. 20 Terminals Of SRS Unit Connector
C (28P)
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is the resistance as specified?

YES - Go to step 8.

NO - Short in the right side wire harness or left side wire harness; replace the faulty harness.

8. Measure the resistance between the No. 19 terminal of SRS unit connector C (28P) and body ground,

and between the No. 20 terminal and body ground. There should be an open circuit or at least 1
Mohms.

Fig. 261: Measuring Resistance Between No. 19 [No. 20] Terminal Of SRS Unit Connector C
(28P) And Body Ground
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is the resistance as specified?

YES - Go to step 9.

NO - Short to ground in the right side wire harness or left side wire harness; replace the faulty
harness.

9. Reconnect the negative cable to the battery.

10. Turn the ignition switch ON (II).

11. Measure the voltage between the No. 19 terminal of SRS unit connector C (28P) and body ground,

2007 Acura RL

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

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

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