Acura TSX / Honda Accord CL. Manual - part 662

(16P) and body ground individually. 

Is there continuity? 

YES: Repair any short to body ground in the wire(s) between the audio-HVAC display panel 
and the recirculation control motor.  

NO: Go to step 9.  

Fig. 66: Checking For Continuity Between The No. 10 & No. 11 Terminals Of Audio-HVAC 
Display Panel Connector B (16P) & Body Ground 

9. Turn the ignition switch ON (II), and check the same wires for voltage. 

Is there any voltage? 

YES: Repair any short to power in the wire(s) between the audio-HVAC display panel and 
the recirculation control motor. This short may also damage the audio-HVAC display panel. 
Repair the short to power before replacing the audio-HVAC display panel.  

NO: Go to step 10.  

 

2004 Acura TSX 

2004 AUTOMATIC A/C SYSTEMS Climate Control System - TSX

  

 

Fig. 67: Checking For Voltage Between The No. 10 & No. 11 Terminals Of Audio-HVAC 
Display Panel Connector B (16P) & Body Ground 

10. Turn the ignition switch OFF.  

11. Check for continuity between the following terminals of audio-HVAC display panel connector B (16P) 

and the recirculation control motor 7P connector. 

Is there continuity? 

YES: Check for loose wire or poor connections at audio-HVAC display panel connector B 
(16P) and at the recirculation control motor. If the connections are good, substitute a known-
good audio-HVAC display panel, and recheck. If the symptom/indication goes away, replace 
the original audio-HVAC display panel.  

NO: Repair any open in the wire(s) between the audio-HVAC display panel and the 
recirculation control motor.  

CONNECTOR CONTINUITY TESTING 

Audio-HVAC Display Panel Connector B (16P) 
Terminal No.

Recirculation Control Motor 7P Conn

Termin

10
11

 

2004 Acura TSX 

2004 AUTOMATIC A/C SYSTEMS Climate Control System - TSX

  

 

Fig. 68: Checking For Continuity Between The Terminals Of Audio-HVAC Display Panel 
Connector B (16P) & The Recirculation Control Motor 7P Connector 

CLIMATE CONTROL POWER & GROUND CIRCUIT TROUBLESHOOTING 

1. Check the No. 30 (7.5A) fuse in the under-dash fuse/relay box. 

Is the fuse OK? 

YES: Go to step 2.  

NO: Replace the fuse, and recheck.  

2. Disconnect audio-HVAC display panel connector B (16P).  

3. Turn the ignition switch ON (II).  

4. Measure the voltage between the No. 4 terminal of audio-HVAC display panel connector B (16P) and 

body ground. 

Is there battery voltage? 

YES: Go to step 5.  

NO: Repair open in the wire between the No. 30 fuse in the driver's under-dash fuse/relay 

 

2004 Acura TSX 

2004 AUTOMATIC A/C SYSTEMS Climate Control System - TSX

  

 

box and the audio-HVAC display panel. 

Fig. 69: Measuring The Voltage Between The No. 4 Terminal Of Audio-HVAC Display Panel 
Connector B (16P) & Body Ground 

5. Turn the ignition switch OFF.  

6. Check for continuity between the No. 6 terminal of audio-HVAC display panel connector B (16P) and 

body ground. 

Is there continuity? 

YES: Check for loose wire or poor connections at audio-HVAC display panel connector B 
(16P). If the connections are good, substitute a known-good audio-HVAC display panel, and 
recheck. If the symptom/indication goes away, replace the original audio-HVAC display 
panel.  

NO: Check for an open in the wire between the audio-HVAC display panel and body 
ground. If the wire is OK, check for poor ground at G503. 

 

2004 Acura TSX 

2004 AUTOMATIC A/C SYSTEMS Climate Control System - TSX