Acura TSX / Honda Accord CL. Manual - part 13

Fig. 48: Measuring The Voltage Between The Audio Unit Connector A Terminal No. 2 & 
Body Ground 

7. Turn the ignition switch OFF, then check for continuity between audio unit connector A terminal No. 20 

and body ground. 

Is there continuity? 

YES: Replace the audio-HVAC display module.  

NO: Repair the open wire between audio unit connector A20 and body ground (G504). 

 

2004 Acura TSX 

2004 ACCESSORIES & EQUIPMENT Audio System - TSX

  

 

Fig. 49: Checking For Continuity Between Audio Unit Connector A Terminal No. 20 & Body 
Ground 

RADIO TUNER DOES NOT CHANGE 

1. Operate the turning knob to see if the radio station changes. 

Does it change? 

YES: Intermittent failure, the tuning knob is OK at this time.  

NO: Replace the audio-HVAC display module.  

VOLUME DOES NOT CHANGE 

1. Listen for sound from the speakers. 

Is the sound normal? 

YES: Go to step 2.  

NOTE:

Set the fader and balance position to the center.

 

2004 Acura TSX 

2004 ACCESSORIES & EQUIPMENT Audio System - TSX

  

 

NO: Go to audio system sound is weak or distorted, or no sound is heard from speakers (see 
AUDIO SYSTEM SOUND IS WEAK OR DISTORTED, OR NO SOUND IS HEARD 
FROM SPEAKERS ).  

2. Operate the volume knob to see if the volume changes. 

Does it change? 

YES: Operation is normal.  

NO: Replace the audio-HVAC display module.  

CD CHANGER DOES NOT MOVE BETWEEN CDS 

1. Insert the six CDs into the audio unit and see if the changer moves between CDs. 

Does the changer operate normally? 

YES: Intermittent failure, the CD changer is OK at this time.  

NO: Go to step 2.  

2. Insert six different CDs into the audio unit. 

Does the changer operate normally? 

YES: At least one of the original CDs is faulty.  

NO: Replace the audio-HVAC display module.  

CD CHANGER DOES NOT LOAD ALL SIX CDS 

1. Load six CDs into the audio unit. 

Does the audio unit accept all six CDs? 

YES: Intermittent failure, the audio unit is OK at this time.  

NO: Go to step 2.  

2. Try to load the CDs again. 

Does the audio unit accept all six CDs? 

YES: At least one of the original CDs is faulty.  

NO: Replace the audio unit.  

RADIO REMOTE SWITCH DOES NOT WORK PROPERLY 

1. Test the radio remote switch (see RADIO REMOTE SWITCH TEST ). 

Is the radio remote switch OK? 

YES: Go to step 2.  

NO: Replace the radio remote switch.  

2. Remove the audio-HVAC display module (see AUDIO-HVAC DISPLAY MODULE 

REMOVAL/INSTALLATION  

3. Measure resistance between the A3 and A11 terminals as specified in the check list. See Fig. 50 and Fig. 

51 . 

Is resistance OK? 

 

2004 Acura TSX 

2004 ACCESSORIES & EQUIPMENT Audio System - TSX

  

 

YES: Go to step 4.  

NO: Repair open or high resistance in the circuit between the audio unit and the radio remote 
switch. If the wires are OK, replace the cable reel (see AIR BAG RESTRAINT 
SYSTEMS ).  

Fig. 50: Measuring Resistance Between The A3 & A11 Terminals 

Fig. 51: Radio Remote Switch Resistance Check List

 

2004 Acura TSX 

2004 ACCESSORIES & EQUIPMENT Audio System - TSX