Acura RL. Manual - part 577

1. Disconnect the 5P connector from the driver's cool vent control motor. 

2. Connect battery power to the No. 1 terminal of the driver's cool vent control motor, and ground the 

No. 2 terminal; the driver's cool vent control motor should run, and stop at Open. If it doesn't, reverse 
the connections; the driver's cool vent control motor should run, and stop at Shut. 

Fig. 102: Identifying Driver's Cool Vent Control Motor Terminals 
Courtesy of AMERICAN HONDA MOTOR CO., INC. 

3. If the driver's cool vent control motor did not run in step 2, remove it, then check the driver's cool vent 

control linkage and door for smooth movement. 



If the linkage and door move smoothly, replace the driver's cool vent control motor (see 
DRIVER'S COOL VENT CONTROL MOTOR REPLACEMENT ).  



If the linkage or door sticks or binds, repair them as needed.  

DRIVER'S COOL VENT CONTROL MOTOR REPLACEMENT 

1. Remove the driver's dashboard undercover (see DRIVER'S DASHBOARD UNDERCOVER 

REMOVAL/INSTALLATION ).  

2. Disconnect the connectors (A) from the power tilt/ telescopic steering control unit, the adaptive front 

lighting control unit, the electronically controlled power steering control unit, and the daytime running 
lights control unit. Remove the relay (B) and the power tilt/telescopic steering control unit (C), then 
remove the self-tapping screws and the bracket (D). 

INFORMATION ).

NOTE:

Incorrectly applying power and ground to the driver's cool vent control 
motor will damage it. Follow the instructions carefully.

 

2007 Acura RL 

2005-08 HVAC HVAC - RL

  

me 

 

Friday, June 05, 2009 2:25:43 PM

Page 91 

© 2005 Mitchell Repair Information Company, LLC. 

Fig. 103: Identifying Control Units And Connectors 
Courtesy of AMERICAN HONDA MOTOR CO., INC. 

3. Disconnect the 5P connector (A) from the driver's cool vent control motor. Remove the self-tapping 

screws and the driver's air mix control motor (B). 

Fig. 104: Identifying Driver's Cool Vent Control Motor And Fasteners 
Courtesy of AMERICAN HONDA MOTOR CO., INC. 

4. Install the motor in the reverse order of removal. Make sure the pin on the motor is properly engaged 

with the linkage. After installation, make sure the motor runs smoothly.  

PASSENGER'S COOL VENT CONTROL MOTOR TEST 

1. Disconnect the 5P connector from the passenger's cool vent control motor. 

2. Connect battery power to the No. 1 terminal of the passenger's cool vent control motor, and ground 

the No. 2 terminal; the passenger's cool vent control motor should run, and stop at Shut. If it doesn't, 
reverse the connections; the passenger's cool vent control motor should run, and stop at Open. 

NOTE:

Before testing, check for HVAC DTCs (see GENERAL TROUBLESHOOTING 
INFORMATION ).

NOTE:

Incorrectly applying power and ground to the passenger's cool vent 
control motor will damage it. Follow the instructions carefully.

 

2007 Acura RL 

2005-08 HVAC HVAC - RL

  

me 

 

Friday, June 05, 2009 2:25:43 PM

Page 92 

© 2005 Mitchell Repair Information Company, LLC. 

Fig. 105: Identifying Passenger's Cool Vent Control Motor Terminals 
Courtesy of AMERICAN HONDA MOTOR CO., INC. 

3. If the passenger's cool vent control motor did not run in step 2, remove it, then check the passenger's 

cool vent control linkage and door for smooth movement. 



If the linkage and door move smoothly, replace the passenger's cool vent control motor (see 
PASSENGER'S COOL VENT CONTROL MOTOR REPLACEMENT ).  



If the linkage or door sticks or binds, repair them as needed.  

PASSENGER'S COOL VENT CONTROL MOTOR REPLACEMENT 

1. Remove the glove box (see GLOVE BOX REMOVAL/INSTALLATION ).  

2. Remove the self-tapping screws, bolt, and the duct (A). 

Fig. 106: Identifying Air Duct And Fasteners 
Courtesy of AMERICAN HONDA MOTOR CO., INC. 

3. Disconnect the 5P connector (A) from the passenger's cool vent control motor. Remove the self-

tapping screws and the passenger's cool vent control motor (B) from the heater unit. 

 

2007 Acura RL 

2005-08 HVAC HVAC - RL

  

me 

 

Friday, June 05, 2009 2:25:43 PM

Page 93 

© 2005 Mitchell Repair Information Company, LLC. 

Fig. 107: Identifying Passenger's Cool Vent Control Motor And Fasteners 
Courtesy of AMERICAN HONDA MOTOR CO., INC. 

4. Install the motor in the reverse order of removal. Make sure the pin on the motor is properly engaged 

with the linkage. After installation, make sure the motor runs smoothly.  

MODE CONTROL MOTOR TEST 

1. Disconnect the 5P connector from the mode control motor. 

2. Connect battery power to the No. 1 terminal of the mode control motor, and ground the No. 2 

terminal; the mode control motor should run smoothly, and stop at Vent. If it doesn't, reverse the 
connections; the mode control motor should run smoothly, and stop at Defrost. When the mode 
control motor stops running, disconnect battery power immediately. 

Fig. 108: Identifying Mode Control Motor Terminals 
Courtesy of AMERICAN HONDA MOTOR CO., INC. 

3. If the mode control motor did not run in step 2, remove it, then check the mode control linkage and 

doors for smooth movement. 



If the linkage and doors move smoothly, replace the mode control motor (see MODE 
CONTROL MOTOR REPLACEMENT ). 

NOTE:

Before testing, check for HVAC DTCs (see GENERAL TROUBLESHOOTING 
INFORMATION ).

NOTE:

Incorrectly applying power and ground to the mode control motor will 
damage it. Follow the instructions carefully.

 

2007 Acura RL 

2005-08 HVAC HVAC - RL

  

me 

 

Friday, June 05, 2009 2:25:43 PM

Page 94 

© 2005 Mitchell Repair Information Company, LLC.