NAVIGATION SYSTEM > Navigation ECU Power Source Circuit |

| 1.INSPECT NAVIGATION ECU |
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Disconnect the navigation ECU connector N4.
Measure the resistance according to the value(s) in the table below.
| Tester connection | Condition | Specified condition |
| GND1 - Body ground | Always | Below 1 Ω |
Measure the voltage according to the value(s) in the table below.
| Tester connection | Condition | Specified condition |
| +B - GND1 | Always | 10 to 14 V |
| ACC - GND1 | Ignition SW ACC | 10 to 14 V |
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| OK | ||
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