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6 COMMUNICATION SIGNAL INSPECTION 1. Connect audio unit to AV and NAVI control unit connector. YEL397E 47 (R), 48 (G)-ground: EL-400, “Terminals and Reference Value for AV and NAVI Control Unit” OK or NG OK © Replace audio unit. NG © Replace AV and NAVI control unit. NAVIGATION SYSTEM Trouble Diagnoses (Cont’d) EL-440 |