Status Screen for Audio and A/C Is Not Displayed When Showing Map Screen

WARNING: This page is about a different car, the 2008 Infiniti FX45 and 2008 Infiniti FX35. However, it is still accessible from the selected car via links, so may be relevant.

Symptom: Status screen is not displayed in the lower portion of map screen when operating audio system and A/C system.

CHECK HARNESS
1. Turn ignition switch OFF.
2. Disconnect display control unit and display connectors.
3. Check continuity between display control unit harness connector (A) M76 terminals 53, 55 and display harness connector (B) M63 terminals 20, 8.
  53 - 20 : Continuity should exist.
  
  55 - 8 : Continuity should exist.
  
  Fig 1: Identifying Continuity Between Display Control Unit (A) M76 And Display Harness Connector (B) M63 Terminals
  Courtesy of NISSAN MOTOR CO., U.S.A.
4. Check continuity between display control unit harness connector (A) M76 terminals 53, 55 and ground.
  53, 55 - Ground : Continuity should not exist.
OK or NG

OK: GO TO 2.

NG: Repair harness or connector.
CHECK VERTICAL SYNCHRONIZING (VP) SIGNAL
1. Connect display control unit and display connectors.
2. Turn ignition switch ON.
3. Check voltage waveform between display control unit harness connector M76 terminal 53 and ground with CONSULT-II or oscilloscope.
  53 - Ground:
  
  Fig 2: Identifying Voltage Signal Waveform
  Courtesy of NISSAN MOTOR CO., U.S.A.
OK or NG

OK: GO TO 3.

NG: Replace display.
CHECK HORIZONTAL SYNCHRONIZING (HP) SIGNAL
Check voltage waveform between display control unit harness connector M76 terminal 55 and ground with CONSULT-II or oscilloscope.

55 - Ground:

Fig 4: Identifying Voltage Signal Waveform
Courtesy of NISSAN MOTOR CO., U.S.A.

Fig 5: Identifying Voltage Waveform Between Display Control Unit Harness Connector M76 Terminal And Ground
Courtesy of NISSAN MOTOR CO., U.S.A.

OK or NG

OK: Replace display control unit.

NG: Replace display.