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AV HORIZONTAL SYNCHRONIZING (HP) SIGNAL CIRCUIT AV-343 < DTC/CIRCUIT DIAGNOSIS > [MID AUDIO WITH BOSE] C D E F G H I J K L M B A O P HORIZONTAL SYNCHRONIZING (HP) SIGNAL CIRCUIT Diagnosis Procedure INFOID:0000000009174607 Regarding Wiring Diagram information, refer to . 1. CHECK HORIZONTAL SYNCHRONIZING (HP) SIGNAL CIRCUIT CONTINUITY 1. Turn ignition switch OFF. 2. Disconnect AV control unit connector M45 and display unit connector. 3. Check continuity between AV control unit connector M45 terminal 62 and display unit connector M93 ter- minal 8. 4. Check continuity between AV control unit connector M45 terminal 62 and ground. Is inspection result normal? YES >> GO TO 2. NO >> Repair or replace harness or connectors. 2. CHECK HORIZONTAL SYNCHRONIZING (HP) SIGNAL 1. Connect AV control unit connector M45 and display unit connector. 2. Turn ignition switch ON. 3. Check signal between display unit connector M93 terminal 8 and ground. Is inspection result normal? YES >> Replace AV control unit. Refer to AV-365, "Removal and Installation" . NO >> Replace display unit. Refer to AV-369, "Removal and Installation" AV control unit Display unit Continuity Connector Terminal Connector Terminal M45 62 M93 8 Yes AV control unit Ground Continuity Connector Terminal M45 62 No Display unit Ground Reference value (+) ( −) Connector Terminal M93 8 — SKIB3601E |