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AV-138 < SERVICE INFORMATION > NAVIGATION SYSTEM Voice Guidance Is Not Heard INFOID:0000000001328769 Symptom: Voice guidance does not sound at route guidance. 1. CHECK HARNESS 1. Turn ignition switch OFF. 2. Disconnect NAVI control unit and audio unit connectors. 3. Check continuity between NAVI control unit harness connector 4. Check continuity between NAVI control unit harness connector OK or NG OK >> GO TO 2. NG >> Repair harness or connector. 2. CHECK VOICE GUIDANCE SIGNAL 1. Connect NAVI control unit and audio unit connectors. 2. Turn ignition switch ON. 3. Check voltage waveform between NAVI control unit harness OK or NG OK >> Replace audio unit. NG >> Replace NAVI control unit. Example of Symptom Possible No Malfunction INFOID:0000000001328770 For Navigation System operation information, refer to Navigation System Owner's Manual. BASIC OPERATIONS 12 – 36 : Continuity should exist. 14 – 34 : Continuity should exist. 12, 14 – Ground : Continuity should not exist. SKIB7865E 12 – 14: SKIB7003E SKIB3609E Symptom Possible cause Possible solution No image is displayed. The brightness is at the lowest setting. Adjust the brightness of the display. The display is turned off. Press and hold the button to turn on the display. No voice guidance is available. The volume is not set correctly, or it is turned off. Adjust the volume of voice guidance. |