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AV-208 < DTC/CIRCUIT DIAGNOSIS > [DISPLAY AUDIO WITH AMPLIFIER] REAR DOOR SPEAKER Is the inspection result normal? YES >> Replace rear door speaker. Refer to AV-237, "Removal and Installation" . NO >> GO TO 4. 4. CHECK PRE-AMP SIGNAL CIRCUIT CONTINUITY 1. Disconnect audio unit connector M46 and audio amplifier connector B159. 2. Check continuity between audio unit connector M46 and audio amplifier connector B159. 3. Check continuity between audio unit connector M46 and ground. Is the inspection result normal? YES >> GO TO 5. NO >> Repair or replace harness or connectors. 5. CHECK PRE-AMP SIGNAL 1. Connect audio unit connector M46 and audio amplifier connector B159. 2. Turn ignition switch to ACC. 3. Push audio unit POWER switch. 4. Check signal between the terminals of audio unit connector M46. Is the inspection result normal? 11 27 Audio signal output 12 28 SKIA0177E Audio unit Audio amplifier Continuity Connector Terminal Connector Terminal M46 4 B159 24 Yes 5 8 13 23 14 7 Audio unit Ground Continuity Connector Terminal M46 4 — No 5 13 14 Audio unit connector M46 Condition Reference value (+) ( −) Terminal Terminal 4 5 Audio signal output 13 14 SKIA0177E |