AUDIO AND VISUAL SYSTEM > Radio Receiver Power Source Circuit |

| 1.INSPECT FUSE (DCC, RAD, ACC) |
Remove the ACC fuse from the instrument panel junction block.
Remove the DCC and RAD fuses from the engine room relay block.
Measure the resistance of the fuses.
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| OK | |
| 2.CHECK WIRE HARNESS (RADIO RECEIVER ASSEMBLY - BATTERY AND BODY GROUND) |
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Disconnect the R1 connector.
Measure the voltage and resistance of the wire harness side connector.
| Tester Connection | Condition | Specified Condition |
| R1-4 (B) - Body ground | Always | 10 to 14 V |
| R1-3 (ACC) - Body ground | Ignition switch ACC | 10 to 14 V |
| Tester Connection | Condition | Specified Condition |
| R1-7 (GND) - Body ground | Always | Below 1 Ω |
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| OK | ||
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