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AV-178 < DTC/CIRCUIT DIAGNOSIS > [BOSE AUDIO WITHOUT NAVIGATION] HORIZONTAL SYNCHRONIZING (HP) SIGNAL CIRCUIT HORIZONTAL SYNCHRONIZING (HP) SIGNAL CIRCUIT Description INFOID:0000000007347749 In composite image (AUX image, camera image), transmit the vertical synchronizing (VP) signal and horizon- tal synchronizing (HP) signal from display unit to AV control unit so as to synchronize the RGB images dis- played with AV control unit such as the image quality adjusting menu, etc. Diagnosis Procedure INFOID:0000000007347750 Regarding Wiring Diagram information, refer to AV-225, "Wiring Diagram - Without Navigation System" 1. CHECK CONTINUITY HORIZONTAL SYNCHRONIZING (HP) SIGNAL CIRCUIT 1. Turn ignition switch OFF. 2. Disconnect display unit connector M93 and AV control unit con- nector M45. 3. Check continuity between display unit harness connector M93 (A) terminal 8 and AV control unit harness connector M45 (B) terminal 45. 4. Check continuity between display unit harness connector M93 (A) terminal 8 and ground. Are continuity results as specified? YES >> GO TO 2 NO >> Repair harness or connector. 2. CHECK HORIZONTAL SYNCHRONIZING (HP) SIGNAL 1. Connect display unit connector M93 and AV control unit connec- tor M45. 2. Turn ignition switch ON. 3. Check signal between display unit harness connector M93 ter- minal 8 and ground. Are voltage readings as specified? YES >> Replace AV control unit. Refer to AV-255, "Removal and Installation" . NO >> Replace display unit. Refer to AV-257, "Removal and Installation" A B Continuity Connector Terminal Connector Terminal M93 8 M45 45 Yes A — Continuity Connector Terminal M93 8 Ground No ALNIA0394GB (+) (-) Condition Reference signal Connector Terminal M93 8 Ground Receive ALNIA0396GB SKIB3601E August 2012 2012 Pathfinder |