Navigation Unit Inputs and Outputs for Connector A (20P)
WARNING: This page is about a different car, the 2009 Acura MDX, 2008 Acura MDX, and 2007 Acura MDX. However, it is still accessible from the selected car via links, so may be relevant.
Navigation Unit Connector A (20P)
NAVIGATION UNIT CONNECTOR A (20P) TERMINAL REFERENCE
| Terminal Number | Wire Color | Terminal Name | Description | Voltage (about) | Symptom | ||
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| 1 | WHT | RSIG (Red signal) | Red color signal | 0.2 V AC 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). |
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| 2 | RED | GSIG (Green signal) | Green color signal | 0.2 VAC 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). |
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| 3 | BRN(1) | SHSIG (Shield signal) | Shield for No. 1, 2, 11, 12, 13 terminals | 0 V | If open: No change to display. If short to ground: No change to display. |
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| 4 | YEL | A/C-SI (Air conditioner serial in) | Communication signal for climate control unit | -- | If open: HVAC cannot be controlled by the navigation system. If short to ground: HVAC cannot be controlled by the navigation system. | ||
| 5 | YEL | ILL (+) (Illumination positive) | Parking light on signal | Lights on: battery voltage, Lights off: 0 V | If open: When brightness=Auto, night mode for the display is inoperative when lights on. If short to ground: daytime mode regardless of the condition of a light switch. |
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| 9 | BRN(1) | GA NET BUS SH (GA-NET bus shield) | Shield for display bus No. 10,20 terminals | 0 V | If open: No change to display. If short to ground: No change to display. |
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| 10 | GRN | GA NET BUS + (GA-NET bus positive) | Date bus (+) GA-Net | 0-5 V pulses average 2.5 V depends on bus traffic | If open: Navigation buttons do not work. If short to ground: Navigation buttons do not work. |
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Navigation Unit Connector A (20P)
NAVIGATION UNIT CONNECTOR A (20P) TERMINAL REFERENCE
| Terminal Number | Wire Color | Terminal Name | Description | Voltage (about) | Symptom | ||
|---|---|---|---|---|---|---|---|
| 11 | YEL | B SIG (Blue signal) | Blue color signal | 0.2 VAC 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). |
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| 12 | GRN | C SIG (Composite signal) | Composite video (vertical/horizontal) Synchronizing signal | 0.2 V AC average in RGB color diagnostic mode | If open: Picture rolls horizontally, colors still visible. If short to ground: Picture rolls horizontally, colors still visible. |
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| 13 | 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. |
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| 14 | RED | A/C-SO (Air conditioner serial out) | Communication signal for climate control unit | -- | If open: HVAC cannot be controlled by the navigation system. If short to ground: HVAC cannot be controlled by the navigation system. |
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| 15 | BLU | A/C-CLK (Air conditioner clock) | Check signal for climate control unit | -- | If open: HVAC cannot be controlled by the navigation system. If short to ground: HVAC cannot be controlled by the navigation system. |
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| 17 | WHT | JOG BUS (Jog bus) | Interface dial operation signal | 0-5 V pulses | If open: You cannot operate navigation system If short to ground: You cannot operate navigation system. |
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| 19 | BRN(1) | JOG SH (Jog shield) | Shield for interface dial signal | -- | -- | ||
| 20 | RED | DISP BUS (-) (Display bus negative) | Date bus (-) GA-Net | 0-5 V pulses 2.5 V average (depends on Bus traffic) | If open: Navigation buttons do not work. If short to ground: Hard buttons work OK. |
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