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VOICE ACTIVATED CONTROL SYSTEM DI-199 C D E F G H I J L M A B DI Audio Not Muted with PTT Switch Pushed ON EKS001AZ 1. CHECK AUDIO UNIT CIRCUIT 1. Disconnect voice activated control module connector and Audio 2. Check the following. – Continuity between voice activated control module harness con- – Continuity between voice activated control module harness con- OK or NG OK >> GO TO 2. NG >> Repair harness or connector. 2. CHECK AUDIO UNIT MUTE SIGNAL 1. Connect voice activated control module connector and audio 2. Turn ignition switch ON. 3. Check voltage between voice activated control module and OK or NG OK >> Replace audio Unit. NG >> Replace voice activated control module. Continuity should exist. Continuity should not exist. SKIA4155E Terminals PTT switch condition Voltage (V) (+) (–) Connector Terminal (Wire color) B69 27 (Y/R) Ground ON Approx. 0 OFF Approx. 5 SKIA4156E |