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AV HORIZONTAL SYNCHRONIZING (HP) SIGNAL CIRCUIT AV-223 < DTC/CIRCUIT DIAGNOSIS > [BASE AUDIO WITH SEPARATE DISPLAY] C D E F G H I J K L M B A O P HORIZONTAL SYNCHRONIZING (HP) SIGNAL CIRCUIT Description INFOID:0000000009652056 In composite image (DVD, auxiliary input, and camera images), transmit the vertical synchronizing (VP) signal Diagnosis Procedure INFOID:0000000009652057 1. CHECK CONTINUITY HORIZONTAL SYNCHRONIZING (HP) SIGNAL CIRCUIT 1. Turn ignition switch OFF. 2. Disconnect front display unit connector and AV control unit connector. 3. Check continuity between front display unit harness connector and AV control unit harness connector. 4. Check continuity between front display unit harness connector and ground. Is the inspection result normal? YES >> GO TO 2. NO >> Repair harness or connector. 2. CHECK HORIZONTAL SYNCHRONIZING (HP) SIGNAL 1. Connect front display unit connector and AV control unit connector. 2. Turn ignition switch ON. 3. Check signal between front display unit harness connector and ground. Is the inspection result normal? YES >> Replace AV control unit. Refer to AV-250, "Removal and Installation" . NO >> Replace front display unit. Refer to AV-251, "Removal and Installation" . Front display unit AV control unit Continuity Connector Terminal Connector Terminal M156 8 M172 38 Existed Front display unit Ground Continuity Connector Terminal M156 8 Not existed Probe Standard Reference value (+) (-) Front display unit Connector Terminal Connector Terminal M156 8 M156 1 Waveform of 1.0 V - 5.5 SKIB3601E |