LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Infiniti >> 2012 >> G37 Base, 2D Coupe >> Repair and Diagnosis >> External Pages >> Different car >> Section 13 (Audio, Visual, Navigation System) >> [Base Audio & Navigation] >> System Description >> Diagnosis System (Av Control Unit) >> On Board Diagnosis Function >> Self-Diagnosis Results
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Self-Diagnosis Results

WARNING: This page is about a different car, the 2011 Nissan Leaf. However, it is still accessible from the selected car via links, so may be relevant.

Check the applicable display at the following table, and then repair the malfunctioning parts.

Only Unit Part Is Displayed In Red.

MALFUNCTION REFERENCE CHART

Screen switch Description Possible malfunction location/Action to take
Control Unit Malfunction is detected in AV control unit power supply and ground circuits.
  • Check the power supply and ground circuit.

    Refer to "AV CONTROL UNIT : DIAGNOSIS PROCEDURE ".

  • When the power switch is OFF, remove and insert the SD card to check for contact malfunction of the SD card, and check for an error again.
    • If there is no malfunction, poor contact of the SD card may be possible. Wait and see the condition.
    • If an malfunction is found, replace the AV control unit.

      Refer to "REMOVAL AND INSTALLATION ".

A Connecting Cable Between Units Is Displayed In Yellow.

MALFUNCTION REFERENCE CHART

Area with yellow connection lines Description Possible malfunction location/Action to take
Control unit <==> GPS Antenna GPS antenna connection malfunctions detected. GPS antenna
Control unit <==> TCU Malfunction is detected in communication circuits between AV control unit and TCU. Communication circuits between AV control unit and TCU.
Control unit <==> SAT Antenna Satellite radio antenna connection malfunction is detected. Satellite radio antenna disconnection