Acura RL. Manual - part 158

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

DTC 71-22: SHORT TO POWER IN DRIVER'S SEAT POSITION SENSOR 

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

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

goes off. 

Does the SRS indicator stay on, and is DTC 71-22 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 from the driver's seat position sensor (A). 

Fig. 297: Identifying Left Side Driver's Seat Position Sensor And 2P Connector 
Courtesy of AMERICAN HONDA MOTOR CO., INC. 

5. Disconnect both seat belt tensioner 4P connectors (see step 6 ).  

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

7. Measure the voltage between the No. 5 terminal of SRS unit connector B (28P) and body ground, and 

between the No. 6 terminal and body ground. There should be 1 V or less. 

NOTE:



Use the HDS to confirm the driver's seat position before proceeding 
with troubleshooting (see DRIVER'S SEAT POSITION SENSOR 
OPERATION CHECK ).  



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

  

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Fig. 298: Measuring Voltage Between No. 5 And 6 Terminal Of SRS Unit Connector B (28P) 
And Body Ground 
Courtesy of AMERICAN HONDA MOTOR CO., INC. 

Is the voltage as specified?  

YES - Faulty driver's seat position sensor or SRS unit; replace the driver's seat position sensor (see 
DRIVER'S SEAT POSITION SENSOR REPLACEMENT ). If the problem is still present, 
replace the SRS unit (see SRS UNIT REPLACEMENT ). 

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

DTC 73-1X ("X" CAN BE 0 THRU 9 OR A THRU F): OPEN IN DRIVER'S E-PRETENSIONER 
MOTOR ('06-08 MODELS) 

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

2. Read the DTC (see GENERAL TROUBLESHOOTING INFORMATION ). 

Is DTC 73-1 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.  

4. Disconnect e-pretensioner subharness 5P connector A from the e-pretensioner unit (see 

COMPONENT LOCATION INDEX ).  

5. Disconnect the e-pretensioner subharness 2P connector from the driver's e-pretensioner motor (see 

COMPONENT LOCATION INDEX ).  

6. Measure the resistance between the No. 1 terminal of e-pretensioner unit connector A (5P) and the 

No. 2 terminal of driver's e-pretensioner motor 2P connector, and between the No. 4 terminal of e-

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

  

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Page 217  © 2005 Mitchell Repair Information Company, LLC. 

pretensioner unit connector A (5P) and the No. 1 terminal of driver's e-pretensioner motor 2P 
connector. There should be 0-1.0 ohms. 

Fig. 299: Measuring Resistance Between No. 1 Terminal Of E-Pretensioner Unit Connector A 
(5P) And No. 2 Terminal Of Driver's E-Pretensioner Motor 2P Connector 
Courtesy of AMERICAN HONDA MOTOR CO., INC. 

Is the resistance as specified?  

YES - Go to step 7. 

NO - Open in the e-pretensioner subharness or the left side wire harness; replace the faulty harness. 

7. Reconnect the driver's e-pretensioner motor 2P connector.,  

8. Measure the resistance between the No. 1 and No. 4 terminals of e-pretensioner unit connector A (5P). 

There should be 0-1.0 ohms. 

Fig. 300: Measuring Resistance Between No. 1 And No. 4 Terminals Of E-Pretensioner Unit 
Connector A (5P) 
Courtesy of AMERICAN HONDA MOTOR CO., INC. 

Is the resistance as specified?  

YES - Faulty e-pretensioner unit; replace the e-pretensioner unit (see E-PRETENSIONER UNIT 
REPLACEMENT ). 

NO - Faulty e-pretensioner motor; replace the driver's e-pretensioner motor (see COMPONENT 
LOCATION INDEX ). 

DTC 74-2X ("X" CAN BE 0 THRU 9 OR A THRU F): OPEN IN FRONT PASSENGER'S E-
PRETENSIONER MOTOR ('06-08 MODELS) 

 

2007 Acura RL 

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

  

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Page 218  © 2005 Mitchell Repair Information Company, LLC. 

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

2. Read the DTC (see GENERAL TROUBLESHOOTING INFORMATION ). 

Is DTC 74-2x 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 e-pretensioner subharness 14P connector B from the e-pretensioner unit (see 

COMPONENT LOCATION INDEX ).  

5. Disconnect the e-pretensioner subharness 2P connector from the driver's e-pretensioner motor (see 

COMPONENT LOCATION INDEX ).  

6. Measure the resistance between the No. 13 terminal of e-pretensioner unit connector B (14P) and the 

No. 2 terminal of front passenger's e-pretensioner motor 2P connector, and between the No. 14 
terminal of e-pretensioner unit connector B (14P) and the No. 1 terminal of front passenger's e-
pretensioner motor 2P connector. There should be 0-1.0 ohms. 

Fig. 301: Measuring Resistance Between No. 13 Terminal Of E-Pretensioner Unit Connector B 
(14P) And No. 2 Terminal Of Front Passenger's E-Pretensioner Motor 2P Connector 
Courtesy of AMERICAN HONDA MOTOR CO., INC. 

Is the resistance as specified?  

YES - Go to step 7. 

NO - Open in the e-pretensioner subharness or right side wire harness; replace the faulty harness. 

7. Reconnect the front passenger's e-pretensioner motor 2P connector.  

8. Measure the resistance between the No. 13 and No. 14 terminals of e-pretensioner unit connector B 

(14P). There should be 0-1.0 ohms. 

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 2:21:57 PM

Page 219  © 2005 Mitchell Repair Information Company, LLC.