|
|
AV-84 < COMPONENT DIAGNOSIS > [AUDIO SYSTEM] VERTICAL SYNCHRONIZING (VP) SIGNAL CIRCUIT VERTICAL SYNCHRONIZING (VP) SIGNAL CIRCUIT Description INFOID:0000000005146323 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:0000000005146324 Regarding Wiring Diagram information, refer to . 1. CHECK CONTINUITY VERTICAL SINCHRONIZING (VP) SIGNAL CIRCUIT 1. Turn ignition switch OFF. 2. Disconnect display unit connector M93 and AV control unit con- nector M43. 3. Check continuity between display unit harness connector M93 (A) terminal 20 and AV control unit harness connector M43 (B) terminal 29. 4. Check continuity between display unit harness connector M93 (A) terminal 20 and ground. Are continuity results as specified? YES >> GO TO 2. NO >> Repair harness or connector. 2. CHECK VERTICAL SINCHRONIZING (VP) SIGNAL 1. Connect display unit connector M93 and AV control unit connec- tor M43. 2. Turn ignition switch ON. 3. Check signal between display unit harness connector M93 ter- minal 20 and ground. Are voltage readings as specified? YES >> Replace AV control unit. Refer to AV-169, "Removal and Installation" . NO >> Replace display unit. Refer to AV-171, "Removal and Installation" A B Continuity Connector Terminal Connector Terminal M93 20 M43 29 Yes A — Continuity Connector Terminal M93 20 Ground No ALNIA0415GB (+) (-) Condition Reference signal Connector Terminal M93 20 Ground Receive ALNIA0393GB SKIB3598E |