Nissan Maxima Service and Repair Manual: Vertical synchronizing (VP) signal circuit

Description

In composite image (AUX image, camera image), transmit the vertical synchronizing (VP) signal and horizontal synchronizing (HP) signal from display unit to AV control unit so as to synchronize the RGB images displayed with AV control unit, such as the image quality adjusting menu, etc.

Diagnosis Procedure

1.CHECK CONTINUITY VERTICAL SYNCHRONIZING (VP) SIGNAL CIRCUIT

Nissan Maxima. CHECK CONTINUITY VERTICAL SYNCHRONIZING (VP) SIGNAL CIRCUIT

  1. Turn ignition switch OFF.
  2. Disconnect display unit connector M141 and AV control unit connector M154.
  3. Check continuity between display unit harness connector M141 (A) terminal 20 and AV control unit harness connector M154 (B) terminal 57.
  4. Check continuity between display unit harness connector M141 (A) terminal 20 and ground.

Nissan Maxima. CHECK CONTINUITY VERTICAL SYNCHRONIZING (VP) SIGNAL CIRCUIT

Nissan Maxima. CHECK CONTINUITY VERTICAL SYNCHRONIZING (VP) SIGNAL CIRCUIT

2.CHECK VERTICAL SYNCHRONIZING (VP) SIGNAL

Nissan Maxima. CHECK VERTICAL SYNCHRONIZING (VP) SIGNAL

  1. Connect display unit connector M141 and AV control unit connector M154.
  2. Turn ignition switch ON.
  3. Check signal between display unit harness connector M141 terminal 20 and ground.

Nissan Maxima. CHECK VERTICAL SYNCHRONIZING (VP) SIGNAL

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