Acura RL. Manual - part 773

5. Check for continuity between SH-AWD control unit connector terminals A6 and A19. 

Fig. 153: Checking Continuity Between SH-AWD Control Unit Connector Terminals A6 And 
A19 
Courtesy of AMERICAN HONDA MOTOR CO., INC. 

Is there continuity?  

YES - Go to step 6. 

NO - Go to step 8. 

6. Measure the resistance between SH-AWD control unit connector terminals A6 and A19. 

Fig. 154: Measuring Resistance Between SH-AWD Control Unit Connector Terminals A6 And 
A19 
Courtesy of AMERICAN HONDA MOTOR CO., INC. 

Is there 2.0 ohms or more?  

YES - Go to step 7. 

NO - Go to step 9. 

7. Check for continuity between SH-AWD control unit connector terminal A6 and body ground. 

 

2007 Acura RL 

2005-08 DRIVELINE/AXLES Rear Differential - RL

  

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Fig. 155: Checking Continuity Between SH-AWD Control Unit Connector Terminal A6 And 
Body Ground 
Courtesy of AMERICAN HONDA MOTOR CO., INC. 

Is there continuity?  

YES - Repair short in the wire between SH-AWD control unit connector terminal A6 and body 
ground. 

NO - Check for loose connector terminals at the SH-AWD control unit and repair if necessary. If the 
connections are OK, substitute a known-good SH-AWD control unit (see SH-AWD CONTROL 
UNIT REPLACEMENT ) and recheck. 

8. Connect a jumper wire between SH-AWD control unit connector terminals A6 and A19. Disconnect 

the right search coil sensor 2P connector, then check for continuity between right search coil sensor 
2P connector terminals No. 1 and No. 2. 

Fig. 156: Connecting Jumper Wire Between SH-AWD Control Unit Connector Terminals A6 
And A19 
Courtesy of AMERICAN HONDA MOTOR CO., INC.

 

2007 Acura RL 

2005-08 DRIVELINE/AXLES Rear Differential - RL

  

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Fig. 157: Checking Continuity Between Right Search Coil Sensor 2P Connector Terminals No. 1 
And No. 2 
Courtesy of AMERICAN HONDA MOTOR CO., INC. 

Is there continuity?  

YES - Replace the rear differential side case (see SIDE CASE REPLACEMENT ). 

NO - Repair open in the wire between right search coil sensor connector terminals No. 1 and No. 2. 

9. Disconnect the right search coil sensor 2P connector, then check for continuity between right search 

coil sensor 2P connector terminals No. 1 and No. 2. 

Fig. 158: Checking Continuity Between Right Search Coil Sensor 2P Connector Terminals No. 1 
And 2 
Courtesy of AMERICAN HONDA MOTOR CO., INC. 

Is there continuity?  

YES - Repair short to ground in the wire between SH-AWD control unit connector A and the right 
search coil sensor connector. 

NO - Replace the rear differential side case (see SIDE CASE REPLACEMENT ). 

DTC 82-3: RIGHT SEARCH COIL SENSOR MAGNETIC FLUX CHARACTERISTIC 

NOTE:

Before you troubleshoot, review the general troubleshooting information 
(see GENERAL TROUBLESHOOTING INFORMATION ).

 

2007 Acura RL 

2005-08 DRIVELINE/AXLES Rear Differential - RL

  

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1. Turn the ignition switch ON (II).  

2. Make sure the HDS communicates with the vehicle and the SH-AWD control unit. If it doesn't, 

troubleshoot the DLC circuit; '05-07 models (see '05-07 MODELS ), '08 model (see '08 MODEL ).  

3. Turn the ignition switch OFF.  

4. Disconnect SH-AWD control unit connector A (26P).  

5. Measure the resistance between SH-AWD control unit connector terminals A6 and A19. 

Fig. 159: Measuring Resistance Between SH-AWD Control Unit Connector Terminals A6 And 
A19 
Courtesy of AMERICAN HONDA MOTOR CO., INC. 

Is there 2.0 ohms or less?  

YES - Replace the rear differential side case (see SIDE CASE REPLACEMENT ). 

NO - Go to step 6. 

6. Clear the DTC with the HDS.  

7. Do the SH-AWD differential clutch torque memorization (see SH-AWD DIFFERENTIAL 

CLUTCH TORQUE MEMORIZATION ).  

8. Test-drive the vehicle at a speed of more than 1 mph (2 km/h) for at least 1 second.  

9. Check for DTCs with the HDS. 

Is DTC 81-1, 81-2, 82-1, and/or 82-2 indicated?  

YES - Go to the indicated DTCs troubleshooting. 

NO - Intermittent failure, the system is OK at this time. 

SYMPTOM TROUBLESHOOTING 

THE SH-AWD INDICATOR DOES NOT GO OFF, AND NO DTCS ARE STORED 

NOTE:



Before you troubleshoot, review the general troubleshooting 
information (see GENERAL TROUBLESHOOTING INFORMATION ).  



Make sure the No. 1 (30 A) fuse in the under-hood fuse/relay box is OK. 



Make sure there are no loose connector terminals at the SH-AWD 
control unit.  

 

2007 Acura RL 

2005-08 DRIVELINE/AXLES Rear Differential - RL

  

me 

 

Friday, June 05, 2009 3:02:19 PM

Page 122  © 2005 Mitchell Repair Information Company, LLC.