Acura RL. Manual - part 152

and between the No. 20 terminal and body ground. There should be 1 V or less.

Fig. 262: Measuring Voltage Between No. 19 [No. 20] Terminal Of SRS Unit Connector C (28P)
And Body Ground
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is the voltage as specified?

YES - Go to step 12.

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

12. Turn the ignition switch OFF.

13. Connect the SRS inflator simulator (jumper connector) and simulator lead H to the right side wire

harness 2P connector (A).

Fig. 263: Identifying Right Side Impact Sensor And 2P Connector
Courtesy of AMERICAN HONDA MOTOR CO., INC.

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

There should be 1.0 ohms or less.

2007 Acura RL

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

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

Fig. 264: 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 - Faulty right side impact sensor (second) or SRS unit; replace the right side impact sensor
(second) (see SIDE IMPACT SENSOR (SECOND) REPLACEMENT ). If the problem is still
present, replace the SRS unit (see SRS UNIT REPLACEMENT ).

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

DTC 46-CX ("X" CAN BE 0 THRU 9 OR A THRU F): FAULTY POWER SUPPLY TO THE
RIGHT SIDE IMPACT SENSOR (SECOND)

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

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. 265: Identifying Right 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. 19 terminal of SRS unit connector C (28P) and body ground.

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

Fig. 266: Measuring Resistance Between No. 19 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 right side wire harness or left side wire harness; replace the faulty
harness.

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. 267: 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?

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

DTC 45-2X, 45-8X, 45-9X, 45-BX ("X" CAN BE 0 THRU 9 OR A THRU F): INTERNAL FAILURE
OF THE LEFT SIDE IMPACT SENSOR (SECOND); DTC 46-2X, 46-8X, 46-9X, 46-BX ("X" CAN
BE 0 THRU 9 OR A THRU F): INTERNAL FAILURE OF THE RIGHT SIDE IMPACT SENSOR
(SECOND)

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 45-2x, 45-8x, 45-9x, 45-Bx, 46-2x, 46-8x, 46-9x, or 46-Bx
indicated?

YES - Replace the left side impact sensor (second) (see SIDE IMPACT SENSOR (SECOND)
REPLACEMENT ). If the DTC returns, replace the SRS unit (see SRS UNIT REPLACEMENT ).

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

DTC 51-XX, 52-XX, 53-XX, 54-XX, 55-XX ("X" CAN BE 0 THRU 9 OR A THRU F): INTERNAL
FAILURE OF THE SRS UNIT

NOTE:



Before troubleshooting any of these DTCs, check the battery/system

2007 Acura RL

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

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

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