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NAVIGATION SYSTEM AV-91 C D E F G H I J L M A B AV 2. CHECK SYMPTOM Turn ignition switch to ACC position. Is screen changed to audio control screen when CD is inserted? Switches.>>GO TO 3. 3. HARNESS CHECK 1. Turn the ignition switch OFF. 2. Disconnect multifunction switch connector and Audio unit connector. 3. Check continuity between multifunction switch and Audio unit. 4. Check continuity between multifunction switch harness connec- OK or NG OK >> GO TO 4. NG >> ● Replace harness. ● Check connector housings for disconnected or loose terminals. 4. COMMUNICATION SIGNAL INSPECTION 1. Turn ignition switch OFF. 2. Connect multifunction switch and Audio unit connectors. 3. Check voltage signal between multifunction switch harness con- OK or NG OK >> Replace audio unit. NG >> Replace multifunction switch. Terminals Continuity (+) (-) Connector Terminal (wire color) Connector Terminal (wire color) M49 11 (L) M53 44 (L) Yes 13 (P) 43 (P) Continuity should not exist. SKIA1426E 11 (L), 13 (P) - ground : Reference Value for Multi- MKIB0647E |