Navigation Ecu
NAVIGATION ECU REFERENCE
| Symbols (Terminals NO.) |
Condition | STD Voltage (V) | Problem symptom when open circuit is detected. | ||||
|---|---|---|---|---|---|---|---|
| Problem symptom when short circuit is detected. | |||||||
| AUI+ <--> GND1 (N3-1 <--> N3-17) | Radio switch ON | 5 - 7 V | Driver's side speaker does not sound. | ||||
| AUO+ <--> GND1 (N3-2 <--> N3-17) | Radio switch ON | 5 - 7 V | Driver's side speaker does not sound. | ||||
| SPD <--> GND1 (N3-5 <--> N3-17) | Ignition switch ON and driving wheel rotated slowly | Repeatedly changes from below 1 to 9 V | Navigation operation is available during, or a cursor on present site does not move. | ||||
| +B <--> GND1 (N3-9 <--> N3-17) | Constant | 10 - 14 V | The set route can not be memorized. (The route disappears by turning the ignition switch OFF.) | ||||
| Fuse is blown. | |||||||
| AUI- <--> GND1 (N3-10 <--> N3-17) | Radio switch ON | 5 - 7 V | Driver's side speaker does not sound. | ||||
| AUO- <--> GND1 (N3-11 <--> N3-17) | Radio switch ON | 5 - 7 V | Driver's side speaker does not sound. | ||||
| REV <--> GND1 (N3-14 <--> N3-17) | A/T shift position R | 5 V | The direction of advance of the vehicle is different from that of the cursor. | ||||
| GND1 <--> Body ground (N3-17 <--> Body ground) | Constant | Below 1 V | System is normal. | ||||
| ACC <--> GND1 (N3-18 <--> N3-17) | Ignition switch ACC or ON | 10 - 14 V | Navigation system does not operate. | ||||
| VR <--> VG (N4-1 <--> N4-6) | Constant | Continuity | Screen noise or other types of noise occur. | ||||
| Navigation system does not operation. | |||||||
| R <--> VG (N4-2 <--> N4-6) | Diagnosis display check screen is white (Using an oscilloscope) | 0.7 V <--> 0.1 V 1* | Screen color turns to blue. | ||||
| +B <--> GND1 (N4-3 <--> N3-17) | Constant | 10 - 14 V | The set route can not be memorized. (The route disappears by turning the ignition switch OFF.) | ||||
| Fuse is blown. | |||||||
| B <--> VG (N4-3 <--> N4-6) | Diagnosis display check screen is white (Using an oscilloscope) | 0.7 +/- 0.1 V2* | Screen color turns to yellow. | ||||
| TX1 + <--> GND1 (N4-5 <--> N3-17) | Ignition switch ACC or ON | 2 - 3 V | Navigation system does not operate. | ||||
| VG <--> GND1 (N4-6 <--> N3-17) | Constant | Continuity | Screen noise or other types of noise occur. | ||||
| Navigation system does not operation. | |||||||
| G <--> VG (N4-7 <--> N4-6) | Diagnosis display check screen is white (Using an oscilloscope) | 0.7 +/- 0.1 V 2* | Screen color turns to red-purple. | ||||
| SYNC <--> VG (N4-8 <--> N4-6) | Display ON (Using an oscilloscope) | 0.5 - 1.3 V 1* | Screen is in disorder. | ||||
| TX1- <--> GND1 (N4-10 <--> N3-17) | Ignition switch ACC or ON | 2 - 3 V | Navigation system does not operate. | ||||
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Oscilloscope
- Measure terminal: SYNC <--> GND1
- Measure set: 500 mV/DIV 10 "MU"s/DIV
- Condition: Navigation display is displayed
- Measure terminal: R, G, B <--> GND1
- Measure set: 200 mV/DIV 10 "MU"s/
- Condition: Navigation map is switched