NAVIGATION SYSTEM > Stereo Component Amplifier Power Source Circuit |

| 1.INSPECT FUSE (RAD NO. 1, RAD NO. 2, ACC) |
Remove the RAD NO. 1 and RAD NO. 2 fuses from the engine room No. 1 relay block.
Remove the ACC fuse from the cowl side junction block RH.
Measure the resistance of the fuses.
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| OK | |
| 2.CHECK WIRE HARNESS (STEREO COMPONENT AMPLIFIER - BATTERY AND BODY GROUND) |
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Disconnect the V29 and V31 amplifier connectors.
Measure the voltage of the wire harness side connectors.
| Tester Connection | Condition | Specified Condition |
| V31-1 (+B) - Body ground | Always | 10 to 14 V |
| V31-10 (+B2) - Body ground | Always | 10 to 14 V |
| V29-12 (ACC) - Body ground | Engine switch on (ACC) | 10 to 14 V |
Measure the resistance of the wire harness side connector.
| Tester Connection | Condition | Specified Condition |
| V31-16 (GND) - Body ground | Always | Below 1 Ω |
| V31-15 (GND2) - Body ground | Always | Below 1 Ω |
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| OK | ||
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