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AV FRONT TWEETER AV-117 < DTC/CIRCUIT DIAGNOSIS > [PREMIUM WITHOUT NAVIGATION] C D E F G H I J K L M B A O P 1. Connect audio amp. connector M113 and suspect tweeter con- nector. 2. Turn ignition switch to ACC. 3. Push “POWER” switch. 4. Check the signal between audio amp. harness connector M113 terminals with CONSULT-III or oscilloscope. Is audio signal voltage as specified? YES >> Replace suspect tweeter. Refer to . NO >> GO TO 3. 3. PRE-AMP HARNESS CHECK 1. Disconnect audio unit connector M171 and audio amp. connec- tor M113. 2. Check continuity between audio unit harness connector M171 (A) and audio amp. harness connector M113 (B). 3. Check continuity between audio unit harness connector M171 (A) and ground. Are continuity test results as specified? YES >> GO TO 4. NO >> • Check connector housings for disconnected or loose terminals. • Repair harness or connector. 4. PRE-AMP SIGNAL CHECK Connec- tor Terminal Condition Reference signal (+) (-) M113 14 30 Receive 13 29 ALNIA0723GB SKIA0177E A B Continuity Connector Terminal Connector Terminal M171 1 M113 6 Yes 2 22 3 5 4 21 A — Continuity Connector Terminal M171 1 Ground No 2 3 4 ALNIA0720GB |