Acura RL. Manual - part 732

Fig. 35: Checking Continuity Between No. 3 And No. 6 Terminals And No. 1 And No. 2 
Terminals 
Courtesy of AMERICAN HONDA MOTOR CO., INC. 

Is there continuity?  

YES - Go to step 16. 

NO - Repair an open in the wire. 

16. Check for continuity between the front passenger's power window motor 6P connector No. 1 terminal 

and body ground. 

Fig. 36: Checking Continuity Between Front Passenger's Power Window Motor 6P Connector 
No. 1 Terminal And Body Ground 
Courtesy of AMERICAN HONDA MOTOR CO., INC. 

Is there continuity?  

YES - Repair a short to ground in the wire. 

NO - Replace the front passenger's power window motor. 

DTC B2178: FRONT PASSENGER'S POWER WINDOW MOTOR PULSE B ERROR 

 

2007 Acura RL 

2005-08 ACCESSORIES AND EQUIPMENT Power Windows - RL

  

me 

 

Friday, June 05, 2009 3:20:28 PM

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© 2005 Mitchell Repair Information Company, LLC. 

1. Clear the DTCs with the HDS.  

2. Turn the ignition switch OFF, and then back ON (II).  

3. Open and close the front passenger's power window by using the front passenger's power window 

switch manually.  

4. Check for DTCs with the HDS. 

Is DTC B2178 indicated?  

YES - Go to step 5. 

NO - Intermittent failure, the system is OK at this time. Check for loose or poor connections. 

5. Open and close the front passenger's power window by using the power window master switch 

manually. 

Does the window motor operate?  

YES - Go to step 6. 

NO - Test the front passenger's power window motor (see POWER WINDOW MOTOR TEST ). 

6. Select the POWER WINDOWS from the BODY ELECTRICAL system select menu and enter the 

DATA LIST.  

7. Check the DETECT/NONE information of the Front passenger's window motor B-phase pulse signal 

in the DATA LIST. 

Does the information indicator display DETECT while the window is moving, and display NONE 
when the window is stopped?  

YES - Replace the front passenger's MPCS unit. 

NO - Go to step 8. 

8. Check for DTCs with the HDS. 

Is DTC B2177 also indicated?  

YES - Go to step 15. 

NO - Go to step 9. 

9. Turn the ignition switch OFF.  

10. Disconnect front passenger's MPCS unit connector B(14P).  

11. Disconnect the 6P connector from the front passenger's power window motor.  

NOTE:

If you are troubleshooting multiple DTCs, be sure to follow the instructions 
in B-CAN System Diagnosis Test Mode A (see TROUBLESHOOTING - B-CAN 
SYSTEM DIAGNOSIS TEST MODE A ).

 

2007 Acura RL 

2005-08 ACCESSORIES AND EQUIPMENT Power Windows - RL

  

me 

 

Friday, June 05, 2009 3:20:28 PM

Page 33 

© 2005 Mitchell Repair Information Company, LLC. 

12. Check for continuity between front passenger's MPCS unit connector B (14P) No. 4 terminal and 

front passenger's power window motor 6P connector No. 4 terminal. 

Fig. 37: Checking Continuity Between (14P)No. 4 Terminal And (6P)No. 4 Terminal 
Courtesy of AMERICAN HONDA MOTOR CO., INC. 

Is there continuity?  

YES - Go to step 13. 

NO - Repair an open in the wire. 

13. Check for continuity between front passenger's power window motor 6P connector No. 4 terminal and 

body ground. 

Fig. 38: Checking Continuity Between Front Passenger's Power Window Motor 6P Connector 
No. 4 Terminal And Body Ground 
Courtesy of AMERICAN HONDA MOTOR CO., INC. 

Is there continuity?  

YES - Repair a short to ground in the wire. 

NO - Go to step 14. 

14. Test the front passenger's power window motor (see POWER WINDOW MOTOR TEST ). 

 

2007 Acura RL 

2005-08 ACCESSORIES AND EQUIPMENT Power Windows - RL

  

me 

 

Friday, June 05, 2009 3:20:28 PM

Page 34 

© 2005 Mitchell Repair Information Company, LLC. 

Is the motor OK?  

YES - Replace the front passenger's MPCS unit. 

NO - Replace the front passenger's power window motor. 

15. Check for continuity between front passenger's MPCS unit connector B (14P) No. 3 and No. 6 

terminals and the front passenger's power window motor 6P connector No. 1 and No. 2 terminals 
respectively. 

Fig. 39: Checking Continuity Between No. 3 And No. 6 Terminals And No. 1 And No. 2 
Terminals 
Courtesy of AMERICAN HONDA MOTOR CO., INC. 

Is there continuity?  

YES - Go to step 16. 

NO - Repair an open in the wire. 

16. Check for continuity between the front passenger's power window motor 6P connector No. 1 terminal 

and body ground. 

Fig. 40: Checking Continuity Between Front Passenger's Power Window Motor 6P Connector 
No. 1 Terminal And Body Ground 
Courtesy of AMERICAN HONDA MOTOR CO., INC.

 

2007 Acura RL 

2005-08 ACCESSORIES AND EQUIPMENT Power Windows - RL

  

me 

 

Friday, June 05, 2009 3:20:28 PM

Page 35 

© 2005 Mitchell Repair Information Company, LLC.