Acura TSX / Honda Accord CL. Manual - part 14

4. Check for continuity between body ground and terminals A3 and A11 individually. 

Is there continuity? 

YES: Repair the short to body ground 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 ).  

NO: Replace the audio-HVAC display module.  

Fig. 52: Checking For Continuity Between Body Ground & Terminals A3 & A11 

AUDIO-HVAC SUBDISPLAY/CLOCK DOES NOT DISPLAY 

1. Check the connections at the audio-HVAC subdisplay/clock 10P connector and the audio-HVAC display 

panel connector C (10P). 

Are the connectors and terminals connected properly? 

YES: Go to step 2.  

NO: Repair the connection and recheck.  

2. Check for continuity between the audio-HVAC subdisplay/clock 10P connector and the audio-HVAC 

display panel connector C (10P) terminals for each wire listed in the chart. See Fig. 53 . 

 

2004 Acura TSX 

2004 ACCESSORIES & EQUIPMENT Audio System - TSX

  

 

Is there continuity? 

YES: Go to step 3.  

NO: Repair the open in the wire between the audio-HVAC display panel and the audio-
HVAC subdisplay/clock.  

Fig. 53: Audio-HVAC Subdisplay/Clock & Audio-HVAC Display Panel Circuit Continuity 
Chart 

3. Check for continuity between each audio-HVAC subdisplay/clock 10P connector terminal and body 

ground. 

Is there continuity? 

YES: Repair the short to ground in the wire between the audio-HVAC display panel and the 
audio-HVAC subdisplay/clock.  

NO: Go to step 4.  

 

2004 Acura TSX 

2004 ACCESSORIES & EQUIPMENT Audio System - TSX

  

 

Fig. 54: Checking For Continuity Between The Audio-HVAC Subdisplay/Clock 10P 
Connector Terminals & Body Ground 

4. Substitute a known audio-HVAC subdisplay/clock and recheck. 

Does the subdisplay work properly? 

YES: Replace the original audio-HVAC subdisplay/clock.  

NO: Substitute a known good audio-HVAC display panel and retest. If the problem is gone, 
replace the original audio-HVAC display panel.  

NO DISPLAY APPEARS ON THE SCREEN (WITHOUT NAVIGATION) 

1. Turn the ignition switch ON (II) and OFF a few times to see if the problem appears. 

Does the problem appear? 

YES: Go to step 2.  

NO: Operation is normal.  

2. Turn the audio unit on and off several times, while listening to the sound from the speakers. 

Is sound heard from the speakers, but no display appears on the screen? 

YES: Go to step 3.  

NO: Go to power switch will not turn on (see POWER SWITCH WILL NOT TURN 
ON ).  

 

2004 Acura TSX 

2004 ACCESSORIES & EQUIPMENT Audio System - TSX

  

 

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

REMOVAL/INSTALLATION ), and check the connection of audio unit connector A (20P). 

Is it connected properly? 

YES: Replace the audio-HVAC-display panel.  

NO: Reconnect the connector, and recheck the problem.  

SECURITY INDICATOR DOES NOT WORK PROPERLY 

1. Check if the operation of the security indicator when turning the ignition switch OFF. 

Does the security indicator flash? 

YES: Operation is normal.  

NO: Go to step 2.  

2. Check the operation of the radio station preset buttons. 

Do the preset buttons set and keep their memory? 

YES: Replace the audio-HVAC display module.  

NO: Go to radio preset memory is lost (see RADIO PRESET MEMORY IS LOST ).  

AUDIO-HVAC DISPLAY MODULE ILLUMINATION TROUBLESHOOTING 

1. Turn the ignition switch to the ON (II) position.  

2. Turn the combination light switch ON.  

3. Turn the illumination control dial on the gauge control module back and forth between full dim and full 

bright. 

Does the problem with the illumination affect only the audio-HVAC display panel? 

YES: Go to step 4.  

NO: Go to B-CAN Diagnosis Test Mode A (see B-CAN SYSTEM DIAGNOSIS TEST 
MODE A ).  

4. Turn the illumination control dial on the gauge control module back and forth between full dim and full 

bright while watching the audio-HVAC display panel buttons, button LEDs, LCD displays and lower 
panel ambient light.  

5. Proceed with the diagnostic procedure for the appropriate symptom(s). 

 

2004 Acura TSX 

2004 ACCESSORIES & EQUIPMENT Audio System - TSX