Acura RL. Manual - part 765

Fig. 105: Checking Continuity Between Left Clutch Electromagnetic Coil 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 the SH-AWD control unit and the left clutch electromagnetic 
coil. 

11. Measure the resistance between left clutch electromagnetic coil 2P connector terminals No. 1 and No. 

2. 

Fig. 106: Measuring Resistance Between Left Clutch Electromagnetic Coil 2P Connector 
Terminals No. 1 And No. 2 
Courtesy of AMERICAN HONDA MOTOR CO., INC. 

Is there 0.6 ohms or less?  

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

NO - Replace the SH-AWD control unit (see SH-AWD CONTROL UNIT REPLACEMENT ). 

DTC 56-3: RIGHT CLUTCH ELECTROMAGNETIC COIL CURRENT MALFUNCTION 

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. Clear the DTC with the HDS.  

4. Do the clutch coil load test with the HDS.  

5. Check for DTCs with the HDS. 

Is DTC 56-3 indicated?

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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Friday, June 05, 2009 3:02:18 PM

Page 87 

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YES - Go to step 6. 

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

6. Turn the ignition switch OFF.  

7. Disconnect SH-AWD control unit connector B (8P).  

8. Check for continuity between SH-AWD control unit connector terminals B2 and B6. 

Fig. 107: Checking Continuity Between SH-AWD Control Unit Connector Terminals B2 And 
B6 
Courtesy of AMERICAN HONDA MOTOR CO., INC. 

Is there continuity?  

YES - Go to step 9. 

NO - Go to step 11. 

9. Disconnect the right clutch electromagnetic coil connector, then check for continuity between SH-

AWD control unit connector terminals B2 and B6. 

Fig. 108: Checking Continuity Between SH-AWD Control Unit Connector Terminals B2 And 
B6 
Courtesy of AMERICAN HONDA MOTOR CO., INC. 

Is there continuity?  

YES - Repair short to ground in the wire between the SH-AWD control unit and the right clutch 
electromagnetic coil. 

 

2007 Acura RL 

2005-08 DRIVELINE/AXLES Rear Differential - RL

  

me 

 

Friday, June 05, 2009 3:02:18 PM

Page 88 

© 2005 Mitchell Repair Information Company, LLC. 

NO - Go to step 10. 

10. Check for continuity between SH-AWD control unit connector terminals B2 and B7. 

Fig. 109: Checking Continuity Between SH-AWD Control Unit Connector Terminals B2 And 
B7 
Courtesy of AMERICAN HONDA MOTOR CO., INC. 

Is there continuity?  

YES - Repair short to ground in the wire between the SH-AWD control unit and the right clutch 
electromagnetic coil. 

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

11. Check for continuity between SH-AWD control unit connector terminals B6 and B7. 

Fig. 110: Checking Continuity Between SH-AWD Control Unit Connector Terminals B6 And 
B7 
Courtesy of AMERICAN HONDA MOTOR CO., INC. 

Is there continuity?  

YES - 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. 

NO - Go to step 12. 

12. Connect a jumper wire between SH-AWD control unit connector terminals B6 and B7. Disconnect the 

 

2007 Acura RL 

2005-08 DRIVELINE/AXLES Rear Differential - RL

  

me 

 

Friday, June 05, 2009 3:02:18 PM

Page 89 

© 2005 Mitchell Repair Information Company, LLC. 

right clutch electromagnetic coil 2P connector, then check for continuity between right clutch 
electromagnetic coil 2P connector terminals No. 1 and No. 2. 

Fig. 111: Connecting Jumper Wire Between SH-AWD Control Unit Connector Terminals B6 
And B7 
Courtesy of AMERICAN HONDA MOTOR CO., INC. 

Fig. 112: Checking Continuity Between Right Clutch Electromagnetic Coil 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 the SH-AWD control unit and the right clutch electromagnetic 
coil. 

DTC 57-1: RIGHT CLUTCH ELECTROMAGNETIC COIL (OPEN) 

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. Clear the DTC with the HDS.  

4. Do the clutch function test with the HDS. 

NOTE:

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

 

2007 Acura RL 

2005-08 DRIVELINE/AXLES Rear Differential - RL

  

me 

 

Friday, June 05, 2009 3:02:18 PM

Page 90 

© 2005 Mitchell Repair Information Company, LLC.