Acura TSX / Honda Accord CL. Manual - part 174

Fig. 60: B-CAN System Link Display 

Monitor Check 

Overview of display unit 

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The display unit communicates with the navigation unit over its own GA-Net bus. Information is sent to 
the navigation unit whenever the user activates the touch screen, or hard buttons. Information sent by the 
navigation unit to the display unit includes commands to control the LCD back light.  

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The display unit is protected by the security system by daisy-chaining the security signal through it, and 
then passing the signal to the audio unit.  

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The illumination input from the gauge brightness control provides back lighting for the hard buttons 
surrounding the screen.  

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The display unit also communicates with the climate control module to set the A/C mode, and fan speed, 
and to receive the outside temperature that is displayed on the A/C-INFO screen.  

These screens allow troubleshooting of the display unit. Touch the menu item you want to troubleshoot, and 
follow the diagnostic instructions. 

 

2004 Acura TSX 

2004 ACCESSORIES & EQUIPMENT Navigation System - TSX

  

 

Fig. 61: Monitor Display 

RGB Color 

This screen verifies that the display unit is receiving the video (R, G, B and Composite sync) signals properly. 
The three primary colors should all be shown without distortion. The combination of all three should produce a 
central white section. If any of the colors are missing, troubleshoot for the color signal (see PICTURE IS 
MISSING A RED/GREEN/BLUE COLOR OR TONE, OR ROLLING PICTURE ). If the picture has lines 
in it, or scrolls horizontally or vertically, troubleshoot for a Composite sync problem (see Picture is missing a 
red/green/blue color or tone, or rolling picture page 22-344).

 

2004 Acura TSX 

2004 ACCESSORIES & EQUIPMENT Navigation System - TSX

  

 

Fig. 62: RGB Color Display 

Gray Tone 

This screen diagnoses problems with contrast. You should be able to see the changes from bar to bar across the 
scale. It is normal for the 2 bars on either side to appear the same.

 

2004 Acura TSX 

2004 ACCESSORIES & EQUIPMENT Navigation System - TSX

  

 

Fig. 63: Gray Tone Display 

White Raster 

The entire display must be shown in white. 

 

2004 Acura TSX 

2004 ACCESSORIES & EQUIPMENT Navigation System - TSX