Operating Screen for Audio and A/C is Not Displayed When Showing NAVI Screen

WARNING: This page is about a different car, the 2006 Nissan Quest. However, it is still accessible from the selected car via links, so may be relevant.

CHECK HARNESS
1. Turn ignition switch OFF.
2. Disconnect display control unit connector M95 and display unit connector M93.
3. Check continuity between display control unit harness connector M95 terminal 49, 51, 53, 55 and display unit harness connector M93 terminal 21, 9, 20, 8.
  Continuity should exist.
4. Check continuity between display control unit harness connector M95 terminal 55 and display unit harness connector M93 terminal 8.
  Continuity should exist.
5. Check continuity between display control unit harness connector M95 terminal 49, 51, 53, 55 and ground.
  Continuity should not exist.
Fig 1: Checking Harness
Courtesy of NISSAN MOTOR CO., U.S.A.

OK or NG

OK: GO TO 2.

NG: Repair harness.
CHECK HORIZONTAL SYNCHRONIZATION SIGNAL
1. Connect display control unit connector and display unit connector.
2. Turn ignition switch ON.
3. Check signal between display control unit connector M95 terminals 55 and 49 with CONSULT-ll or oscilloscope.
  55 - 49: Refer to , " TERMINALS AND REFERENCE VALUE FOR DISPLAY CONTROL UNIT ".
  
  Fig 2: Checking Horizontal Synchronization Signal
  Courtesy of NISSAN MOTOR CO., U.S.A.
OK or NG

OK: GO TO 3.

NG: Replace display unit. Refer to , "DISPLAY UNIT ".
CHECK RGB AREA SIGNAL
1. Press the "TRIP" button.
2. Check signal between display control unit connector M95 terminals 51 and 49 with CONSULT-ll or oscilloscope.
  51 - 49: Refer to , " TERMINALS AND REFERENCE VALUE FOR DISPLAY CONTROL UNIT ".
Fig 3: Checking RGB Area Signal
Courtesy of NISSAN MOTOR CO., U.S.A.

OK or NG

OK: Replace display unit. Refer to , "DISPLAY UNIT ".

NG: Replace display control unit. Refer to , "DISPLAY CONTROL UNIT ".