Display Unit Inputs and Outputs for 20P Connector
WARNING: This page is about a different car, the 2008 Acura TSX, 2007 Acura TSX, and 2006 Acura TSX. However, it is still accessible from the selected car via links, so may be relevant.
DISPLAY UNIT INPUTS AND OUTPUTS FOR 20P CONNECTOR
| Terminal Number | Wire Color | Terminal Name | Description | Voltage (about) | Symptom |
|---|---|---|---|---|---|
| 1 | RED | +B (+B power source) | Continuous power source | Battery voltage | If open: Screen completely off (no backlight visible). If short to ground: Blows fuse No. 7 (10 A) in the under-dash fuse/relay box. |
| 2 | YEL | ACC (Accessory) | Power source for accessory | Battery voltage at ACC (I) | If open: Display and buttons do not work. If short to ground: Blows fuse No. 32 (7.5 A) in the under-dash fuse/relay box. |
| 3 | GRN | AUD BUS (+) (Audio bus positive) | Data bus (+) GA-Net | 0-5 V pulses average 2.5 V depends on bus traffic | If open: Navigation buttons and touch screen do not work. If short to ground: Navigation buttons and touch screen do not work. |
| 4 | GRY | SH AUD BUS (Shield audio bus) | Shield for audio bus terminal No. 3, 13 | 0 V | If open: No change to display. If short to ground: No change to display |
| 5 | BLU | DISP BUS (+) (Display bus positive) | Data bus (+) GA-Net | 0-5 V pulses average 2.5 V depends on bus traffic | If open: Navigation buttons and touch screen do not work. If short to ground: Navigation buttons and touch screen do not work. |
| 8 | WHT | R SIG (Red signal) | Red color signal | 0.2 VAC average in RGB color diagnostic mode | If open: Red color missing (see "RGB COLOR " diagnostic). If short to ground: Red color missing (see "RGB COLOR " diagnostic). |
| 9 | RED | G SIG (Green signal) | Green color signal | 0.2 V AC average in RGB color diagnostic mode | If open: Green color missing (see "RGB COLOR " diagnostic). If short to ground: Green color missing (see "RGB COLOR " diagnostic). |
| 10 | BLK | GND (Ground) | Ground for display unit | 0 V | If open: No change to display. If short to ground: No change to display. |
| 13 | RED | AUD BUS (-) (Audio bus negative) | Data bus (-) GA-Net | 0-5 V pulses average 2.5 V depends on bus traffic | If open: Navigation buttons and touch screen do not work. If short to ground: Hard and touch buttons work OK. |
| 14 | GRY | SH DISP BUS (Shield display bus) | Shield for display bus terminal No. 5, 15 | 0 V | If open: No change to display. If short to ground: No change to display. |
| 15 | PNK | DISP BUS (-) (Display bus negative) | Data bus (-) GA-Net | 0-5 V pulses average 2.5 V depends on bus traffic | If open: Navigation buttons and touch screen do not work. If short to ground: Hard and touch buttons work OK. |
| 17 | BLK | GND SIG (Ground signal) | Ground for color signal | 0 V | If open: No change to display. If short to ground: No change to display. |
| 18 | YEL | B SIG (Blue signal) | Blue color signal | 0.2 V AC average in RGB color diagnostic mode | If open: Blue color missing (see "RGB COLOR " diagnostic). If short to ground: Blue color missing (see "RGB COLOR " diagnostic). |
| 19 | GRN | C SIG (Composite signal) | Composite video (vertical/horizontal) synchronizing signal | 0.2 VAC average in RGB color diagnostic mode | If open: Picture rolls horizontally, colors still visible. If short to ground: Picture rolls horizontally, colors still visible. |
| 20 | GRY | SH SIG (Shield signal) | Shield for terminal No. 8, 9, 17, 18, 19 | 0 V | If open: No change to display. If short to ground: No change to display. |