Acura RL. Manual - part 145

13. Turn the ignition switch OFF.

14. Connect the SRS inflator simulator (jumper connector) and simulator lead H to the engine

compartment wire harness 2P connector (A).

Fig. 218: Identifying Engine Compartment Left Front Impact Sensor And 2P Connector
Courtesy of AMERICAN HONDA MOTOR CO., INC.

15. Measure the resistance between the No. 15 and No. 27 terminals of SRS unit connector A (28P).

There should be 0-1.0 ohms.

Fig. 219: Measuring Resistance Between No. 15 And No. 27 Terminals Of SRS Unit Connector
A (28P)
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is the resistance as specified?

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

NO - Open in dashboard wire harness A or engine compartment wire harness; replace the faulty
harness.

DTC 41-CX ("X" CAN BE 0 THRU 9 OR A THRU F): FAULTY POWER SUPPLY TO THE LEFT
FRONT IMPACT SENSOR

2007 Acura RL

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

Friday, June 05, 2009 2:21:56 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 41-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 engine compartment wire harness 2P connector (A) from the left front impact sensor.

Fig. 220: Identifying Engine Compartment Left Front Impact Sensor And 2P Connector
Courtesy of AMERICAN HONDA MOTOR CO., INC.

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

6. Measure the resistance between the No. 27 terminal of SRS unit connector A (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 2:21:56 PM

Fig. 221: Measuring Resistance Between No. 27 Terminal Of SRS Unit Connector A (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 dashboard wire harness A or engine compartment wire harness; replace the
faulty harness.

7. Measure the resistance between the No. 15 and No. 27 terminals of SRS unit connector A (28P).

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

Fig. 222: Measuring Resistance Between No. 15 And No. 27 Terminals Of SRS Unit Connector
A (28P)
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is the resistance as specified?

NO - Short in dashboard wire harness A or engine compartment wire harness; replace the faulty
harness.

DTC 42-1X ("X" CAN BE 0 THRU 9 OR A THRU F): NO SIGNAL FROM THE RIGHT FRONT
IMPACT SENSOR

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 2:21:56 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 42-1x 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.

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

5. Check the connections between SRS unit connector A (28P) and the SRS unit, between the engine

compartment wire harness 2P connector and the right front impact sensor (see COMPONENT
LOCATION INDEX ), and at connector C303 (see ENGINE COMPARTMENT WIRE
HARNESS (LEFT BRANCH) ).

Are the connections OK?

YES - Go to step 6.

NO - Repair the poor connections and retest. If DTC 42-1x is still present, go to step 4.

6. Disconnect the engine compartment wire harness 2P connector (A) from the right front impact sensor.

Fig. 223: Identifying Engine Compartment Right Front Impact Sensor And 2P Connector
Courtesy of AMERICAN HONDA MOTOR CO., INC.

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

8. Measure the resistance between the No. 16 and No. 28 terminals of SRS unit connector A (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 2:21:56 PM

Content .. 143 144 145 146 ..