Navigation ECU
WARNING: This page is about a different car, the 2004 Lexus LX 470. However, it is still accessible from the selected car via links, so may be relevant.
NAVIGATION ECU TERMINALS SPECIFICATIONS
| Symbols (Terminals No.) | Wiring Color | Terminal Description | Condition | Specification |
|---|---|---|---|---|
| AUI+ (N2-1) - GND (N2-17) | P - W-B | Sound signal (input) | Audio system is playing | - |
| AUO+ (N2-2) - GND (N2-17) | P - W-B | Sound signal (output) | Audio system is playing | - |
| SLD1 (N2-3) - Body ground | Shielded - Body ground | Shielded ground | Always | Below 1.0 V |
| SPD (N2-5) - GND1 (N2-17) | V - W-B | Speed signal from combination meter | See VEHICLE SIGNAL CHECK MODE (see PRE-CHECK ) | - |
| +B (N2-9) - GND (N2-17) | L-Y - W-B | Battery | Always | 10 to 14 V |
| AUI- (N2-10) - GND (N2-17) | V - W-B | Sound signal (input) | Audio system is playing | - |
| AUO- (N2-11) - GND (N2-17) | V - W-B | Sound signal (output) | Audio system is playing | - |
| VOI+ (N2-12) - Body ground | O - Body ground | Telephone voice signal (bluetooth) | See MICROPHONE CHECK | - |
| VOI- (N2-13) - Body ground | W - Body ground | Telephone voice signal (bluetooth) | See MICROPHONE CHECK | - |
| REV (N2-14) - GND (N2-17) | R-B - W-B | Reverse signal from combination meter | See VEHICLE SIGNAL CHECK MODE (see PRE-CHECK ) | - |
| GND (N2-17) - Body ground | W-B - Body ground | Ground | Always | Below 1 V |
| ACC (N2-18) - GND (N2-17) | GR - W-B | Accessory (ON) | Turn ignition switch OFF --> ACC or ON | Below 1 V --> 10 - 14 V |
| VR (N3-1) - GND (N2-17) | B - W-B | Video return signal | Turn ignition switch OFF | Below 1 V |
| R (N3-2) - GND (N2-17) | Y - W-B | Display signal (red) | Navigation display is on | Pulse generation *2 |
| B (N3-3) - GND (N2-17) | R - W-B | Display signal (blue) | Navigation display is on | Pulse generation *2 |
| TX+ (N3-5) - GND (N2-17) | P - W-B | AVC-LAN communication signal | Turn ignition switch to ACC | 2 to 3 V |
| VG (N3-6) - Body ground | Shielded - Body ground | Shielded ground | Always | Below 1 V |
| G (N3-7) - GND (N2-17) | W - W-B | Display signal (green) | Navigation display is on | Pulse generation *2 |
| SYNC (N3-8) - GND (N2-17) | G - W-B | Display signal (synchronize) | Navigation display is on | Pulse generation *1 |
| TX- (N3-10) - GND (N2-17) | L-B - W-B | AVC-LAN communication signal | Turn ignition switch to ACC | 2 to 3 V |
| MIC+ (N8-3) - GND (N2-17) | B - W-B | Microphone voice signal | See MICROPHONE CHECK | - |
| MIC- (N8-5) - GND (N2-17) | W - W-B | Microphone voice signal | See MICROPHONE CHECK | - |
| SNSE (N8-7) - Body ground | W-B - Body ground | Ground | Always | Below 1 V |
- *1: Oscilloscope wave
Terminal to be measured: SYNC - GND1 Setting for measurement: 500mV/DIV 10 MUEs/DIV Condition: Navigation display is displayed
- *2: Oscilloscope wave
Terminal to be measured: R, G, B - GND1 Setting for measurement: 200mV/DIV 10 MUEs/DIV Condition: Navigation map is switched.