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| Sonar control unit | (-) | Voltage (Approx. ) | |
| Connector | Terminal | ||
| B20 | 2 | Ground | 0 V |
Repair harness or connector.| Front sonar sensor LH inner | Ground | Continuity | |
| Connector | Terminal | ||
| E305 | 2 | Not existed | |
Replace the front sonar sensor LH inner. Refer to Removal and Installation
.
Repair the harness or connector.