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Home >> Toyota >> 2004 >> Highlander Limited, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 919 (Audio, Visual, Navigation System (BOSE Audio) (Without Navigation)) >> System Description >> Diagnosis System (Av Control Unit) >> Av Control Unit >> AV CONTROL UNIT: Diagnosis Description >> Self-Diagnosis

AV CONTROL UNIT: Diagnosis Description: Self-Diagnosis

WARNING: This page is about a different car, the 2013 Nissan Armada. However, it is still accessible from the selected car via links, so may be relevant.
  1. Perform self-diagnosis by selecting "Self-Diagnosis".
    • Self-diagnosis subdivision screen is displayed, and the self-diagnosis mode starts.
    • A bar graph visible on the center of the self-diagnosis subdivision screen indicates progress of the trouble diagnosis.
    NOTE: Self-diagnosis requires approximately 10 seconds to complete.
    Fig 1: Display - Self-Diagnosis Subdivision Screen
    G08698122Courtesy of NISSAN NORTH AMERICA, INC.
  2. Diagnosis results are displayed after the self-diagnosis is completed. The unit names and the connection lines are color-coded according to the diagnostic results.
    Diagnosis results Unit Connection line
    Normal Green Green
    Connection malfunction Gray Yellow
    Unit malfunction (1) Red Green
    • (1) Only the AV control unit is displayed in red.
    • If multiple malfunctions occur at the same time for a single unit, the screen switch colors are determined according to the following order of priority: red > yellow > gray.
    Fig 2: Display - Diagnosis Results Screen
    G08698123Courtesy of NISSAN NORTH AMERICA, INC.
  3. Select a component on the "Self-Diagnosis" screen and comments for the diagnosis results will be shown.
    Fig 3: Display - System Diagnostic Menu Screen
    G08698124Courtesy of NISSAN NORTH AMERICA, INC.
SELF-DIAGNOSIS RESULTS

Area with yellow connection lines Description Possible malfunction location/Action to take
G08698125
AV control unit malfunction is detected Replace the AV control unit. Refer to "REMOVAL AND INSTALLATION ".
G08698126
Poor connection is detected for the display unit
  • Harness or connector
  • AV control unit
  • Display unit
G08698127
Switch malfunction is detected Perform A/C and AV switch assembly diagnostics. Refer to "A/C AND AV SWITCH ASSEMBLY: COMPONENT FUNCTION CHECK "
G08698128
Poor connection is detected for the Bluetooth control unit
  • Harness or connector
  • AV control unit
  • Bluetooth control unit
G08698129
Poor connection is detected for the satellite radio tuner.
  • Harness or connector
  • AV control unit
  • Satellite radio tuner