Navigation Unit Inputs and Outputs for Connector A (20P)

Terminal Number | Wire Color | Terminal Name | Description | Voltage (about) | Symptom
--- | --- | --- | --- | --- | ---
1 | WHT | R SIG (Red signal) | Red color signal | 0−1 V AC | If open: Red color missing (see ‘‘RGB Color'' diagnostic). If short to ground: Red color missing (see ‘‘RGB Color'' diagnostic).
2 | RED | G SIG (Green signal) | Green color signal | 0−1 V AC | If open: Green color missing (see ‘‘RGB Color'' diagnostic). If short to ground: Green color missing (see ‘‘RGB Color'' diagnostic).
3 | GRY | SH SIG (Shield signal) | Shield for terminal No. 1, 2, 11, 12, 13 | 0 V | If open: No change to display. If short to ground: No change to display.
5 | RED/BLK | ILL (+) (Illumination positive) | Parking light on signal from dash and console lights, under-hood ‘‘Relay fuse box'' | 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: Blows fuse 4 in under-hood fuse/relay box.
8 | WHT | CAN-H (CAN high) | F-CAN bus communication with the ‘‘gauge control module'' | Pulses 2.5−6 V average 3 V | If open: 1) System Links FI-ECU, and Meter both show ‘‘NG''. 2) F-CAN diagnostic=‘‘NG''. 3) B-CAN diagnostic=‘‘NG''. 4) Car status CHG (CAN)=0. 5) Functional Setup, Trip into, FUP & Sampled FL=0. If short to ground: Same diagnostic conditions as when open, and also sets the following DTCs. B1168 Gauge Control Module loss of Comm. (Engine) B1169 Gauge Control Module loss of Comm. (A/T) B1178 F-CAN communication Circuit error. U0073 (F-CAN Bus off) U0155 (F-CAN Gauge control) U0121 (F-CAN TCS control)
9 | GRY | SH DISP BUS (Shield display bus) | Shield for display bus terminal No. 10, 20 | 0 V | If open: No change to display. If short to ground: No change to display.
10 | LT BLU | DISP BUS (+) (Display bus positive) | Date bus (+) GA-Net | 0 V−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.

Terminal Number | Wire Color | Terminal Name | Description | Voltage (about) | Symptom
--- | --- | --- | --- | --- | ---
11 | YEL | B SIG (Blue signal) | Blue color signal | 0−1 V AC | If open: Blue color missing (see ‘‘RGB Color'' diagnostic). If short to ground: Blue color missing (see ‘‘RGB Color'' diagnostic).
12 | BRN | C SIG (Composite signal) | Composite video (vertical/horizontal) Synchronizing signal | 0.3 V AC | If open: Picture rolls horizontally, colors still visible. If short to ground: Picture rolls horizontally, colors still visible.
13 | GRN | 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 | RED | CAN-L (CAN low) | F-CAN bus communication with the ‘‘gauge control module'' | Pulses 2.5−6 V average 3 V | If open: 1) System Links FI-ECU, and Meter both show ‘‘NG''. 2) F-CAN diagnostic=‘‘NG''. 3) B-CAN diagnostic=‘‘NG''. 4) Car status CHG (CAN)=0. 5) Functional Setup, Trip into, FUP & Sampled FL=0. If short to ground: Same diagnostic conditions as when open, and also sets the following DTCs. B1168 Gauge Control Module loss of Comm. (Engine) B1169 Gauge Control Module loss of Comm. (A/T) B1178 F-CAN communication Circuit error. U0073 (F-CAN Bus off) U0155 (F-CAN Gauge control) U0121 (F-CAN TCS control)
20 | PUR | DISP BUS (−) (Display bus negative) | Date bus (−) GA-Net | 0 V−5 V pulses nominally 2.5 V | If open: Navigation buttons and touch screen do not work. If short to ground: Hard and touch buttons work OK.