Acura RL. Manual - part 734

8. Check for continuity between front passenger's MPCS unit connector A (28P) terminal No. 4 and 

body ground. 

Fig. 44: Checking Continuity Between Front Passenger's MPCS Unit Connector A (28P) 
Terminal No. 4 And Body Ground 
Courtesy of AMERICAN HONDA MOTOR CO., INC. 

Is there continuity?  

YES - Go to step 9. 

NO - Repair an open in the wire, or replace the faulty passenger's under-dash fuse/relay box. 

9. Check for continuity between right rear power window switch 14P connector terminal No. 2 and body 

ground. 

Fig. 45: Checking Continuity Between Right Rear Power Window Switch 14P Connector 
Terminal No. 2 And Body Ground 
Courtesy of AMERICAN HONDA MOTOR CO., INC. 

Is there continuity?  

YES - Go to step 10. 

NO - Repair an open in the wire, or replace the faulty passenger's under-dash fuse/relay box. 

10. Check for continuity between left rear power window switch 14P connector terminal No. 2 and body 

ground. 

 

2007 Acura RL 

2005-08 ACCESSORIES AND EQUIPMENT Power Windows - RL

  

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Fig. 46: Checking Continuity Between Left Rear Power Window Switch 14P Connector 
Terminal No. 2 And Body Ground 
Courtesy of AMERICAN HONDA MOTOR CO., INC. 

Is there continuity?  

YES - Go to step 11. 

NO - Repair an open in the wire. 

11. Remove the jumper wire from the driver's MPCS unit connector A (40P).  

12. Check for continuity between driver's MPCS unit connector A (40P) terminal No. 8 and power 

window master switch 6P connector terminal No. 6. 

Fig. 47: Checking Continuity Between (40P) terminal No. 8 And (6P) Connector Terminal No. 6
Courtesy of AMERICAN HONDA MOTOR CO., INC. 

Is there continuity?  

YES - Go to step 13. 

NO - Repair an open in the wire. 

13. Substitute a known-good power window master switch, and do the power window control unit 

learning procedure (see RESETTING THE POWER WINDOW CONTROL UNIT ).  

14. Connect these connectors: 



Driver's MPCS unit connector A (40P) 

 

2007 Acura RL 

2005-08 ACCESSORIES AND EQUIPMENT Power Windows - RL

  

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

Front passenger's MPCS unit connector A (28P)  



Left rear power window switch 14P connector  



Right rear power window switch 14P connector  

15. Turn the ignition switch ON (II).  

16. Clear the DTCs with the HDS.  

17. Open and close the each window by operating the power window master switch.  

18. Check for DTCs with the HDS. 

Is DTC B2188 indicated?  

YES - Go to step 19. 

NO - The original power window master switch is faulty; replace it. 

19. Turn the ignition switch OFF.  

20. Substitute a known-good front passenger's MPCS unit.  

21. Turn the ignition switch ON (II).  

22. Clear the DTCs with the HDS.  

23. Open and close the front passenger's power window by operating the front passenger's power window 

switch.  

24. Check for DTCs with the HDS. 

Is DTC B2188 indicated?  

YES - Go to step 25. 

NO - The original front passenger's MPCS unit is faulty; replace it. 

25. Turn the ignition switch OFF.  

26. Substitute a known-good left rear power window switch.  

27. Turn the ignition switch ON (II).  

28. Clear the DTCs with the HDS.  

29. Open and close the left rear power window by operating the left rear power window switch.  

30. Check for DTCs with the HDS. 

Is DTC B2188 indicated?  

YES - Go to step 31. 

NO - The original left rear power window switch is faulty; replace it. 

31. Turn the ignition switch OFF.  

32. Substitute a known-good right rear power window switch.  

33. Turn the ignition switch ON (II).  

34. Clear the DTCs with the HDS.  

 

2007 Acura RL 

2005-08 ACCESSORIES AND EQUIPMENT Power Windows - RL

  

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35. Open and close the right rear power window by operating the right rear power window switch.  

36. Check for DTCs with the HDS. 

Is DTC B2188 indicated?  

YES - Replace the driver's MPCS unit. 

NO - The original right rear power window power switch is faulty; replace it. 

DTC B2189: DRIVER'S POWER WINDOW POSITION DETECT CIRCUIT ERROR 

1. Clear the DTCs with the HDS.  

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

3. Open and close the driver's power window by using the power window master switch manually.  

4. Check for DTCs with the HDS. 

Is DTC B2175 or B2176 also indicated?  

YES - Troubleshoot the indicated DTC(s) first. 

NO - Go to step 5. 

5. Reset the power window control unit (see RESETTING THE POWER WINDOW CONTROL 

UNIT ).  

6. Clear the DTCs with the HDS.  

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

8. Open and close the driver's power window by using the power window master switch manually.  

9. Check for DTCs with the HDS. 

Is DTC B2189 indicated?  

YES - Go to step 10. 

NO - The system is OK at this time. 

10. Turn the ignition switch OFF.  

11. Substitute a known-good driver's MPCS unit.  

12. Clear the DTCs with the HDS.  

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

14. Open and close the driver's power window by using the power window master switch manually.  

15. Check for DTCs with the HDS. 

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 43 

© 2005 Mitchell Repair Information Company, LLC.