Navigation display unit 20P connector
TERMINAL NUMBER AND WIRE COLOR DESCRIPTION
| Terminal Number | Wire Color | Terminal Name | Description | Voltage (about) | Symptom | ||
|---|---|---|---|---|---|---|---|
| 1 | WHT | + 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 driver's under-dash fuse/relay box. |
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| 2 | PUR | 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 (10 A) in the driver's under-dash fuse/relay box. |
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| 3 | GRN | GA-NET BUS + (GA-NET 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 do not work. |
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| 4 | GRY(1) | GA-NET BUS SH (GA-NET) | Shield for terminals No. 3, 13 | 0 V | If open: No change to display. If short to ground: No change to display. |
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| 5 | GRN | ECU BUS + (Display bus positive) | Data 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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| 6 | LT GRN | SECURITY+ | Security signal to rear screen | 0 V | If open: The security system will set, and will not trip when screen is removed. If short to ground: The security system will set, and will not trip when screen is removed. |
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| 8 | WHT | RSIG1 (Red signal) | Red color signal | 0.7 V AC | If open: Red color missing (see RGB COLOR diagnostic). If short to ground: Red color missing (see RGB COLOR diagnostic). |
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| 9 | RED | GSIG1 (Green signal) | Green color signal | 0.7 V AC | If open: Green color missing (see RGB COLOR diagnostic). If short to ground: Green color missing (see RGB COLOR diagnostic). |
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| 10 | BLK | GND (Ground) (G501) | Ground for display unit | 0 V | If open: No change to display. If short to ground: No change to display. |
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The color of the insulating tube, typically black or dark gray, may not match the color of the wire shown on the circuit diagram.
TERMINAL NUMBER AND WIRE COLOR DESCRIPTION
| Terminal Number | Wire Color | Terminal Name | Description | Voltage (about) | Symptom | ||
|---|---|---|---|---|---|---|---|
| 11 | LT BLU | ILL+ (Illumination positive) | Parking light on signal from dash and console lights | Battery voltage if lights on: otherwise 0 V | If open: When brightness=Auto, night mode for the display is inoperative when lights on. If short to ground: Blows fuse No. 7 (7.5 A) in the passenger's under-dash fuse/relay box. |
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| 13 | RED | GA-NET BUS -(GA-NET bus negative) | Data 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: Hard buttons work OK. |
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| 14 | GRY(1) | SH ECU BUS (Shield ECU bus) | Shield for display bus terminals No. 5, 15 | 0 V | If open: No change to display. If short to ground: No change to display. |
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| 15 | RED | ECU 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. |
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| 16 | BRN | SECURITY- | Security signal from CD changer | 0 V | If open: The security system sets, but does not trip when screen is removed. If short to ground: The security system sets, but does not trip when screen is removed. |
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| 17 | BLU | GND SIG 1 (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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| 18 | YEL | B SIG 1 (Blue signal) | Blue color signal | 0-1 VAC | If open: Blue color missing (see RGB COLOR diagnostic). If short to ground: Blue color missing (see RGB COLOR diagnostic). |
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| 19 | BRN | CSIG1 (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. |
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| 20 | GRY(1) | SH SIG 1 (Shield signal) | Shield for terminals No. 8, 9, 17, 18, 19 | 0 V | If open: No change to display. If short to ground: No change to display. |
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The color of the insulating tube, typically black or dark gray, may not match the color of the wire shown on the circuit diagram.