2007 INFINITI QX56 audio

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INFINITI QX56 2007 Factory Service Manual AV-100
< SERVICE INFORMATION >
NAVIGATION SYSTEM
7. On the “SELF DIAGNOSIS” screen, each unit name will be col-
ored according to the diagnosis result, as follows.
• If several malfunctions are

AV-100
< SERVICE INFORMATION >
NAVIGATION SYSTEM
7. On the “SELF DIAGNOSIS” screen, each unit name will be col-
ored according to the diagnosis result, as follows.
• If several malfunctions are present in a unit, color of its switch
on the screen will be either red, yellow, or gray, determined by
the malfunction of the highest priority.
8. Select a switch on the “SELF DIAGNOSIS” screen and com-
ments for the diagnosis results will be shown.
• When the switch is green, the following comment will be
shown. “Self-diagnosis was successful. Further diagnosis and
adjustments are recommended. Follow the “confirmation/
adjustment” menu or refer to the service manual.”
• When the switch is yellow, the following comment will be
shown. “Connection to the following unit is abnormal. See the
service manual for further details”.
• When the switch is red, the following comment will be shown.
“DCU is abnormal”.
SELF–DIAGNOSIS RESULT
Quick reference table
1. Select a malfunctioning diagnosis No. in the diagnosis result quick reference table.
2. Find estimated malfunctioning system in the diagnosis No. table and perform check by referring to AV-86,
"Wiring Diagram - COMM -".
3. Turn the ignition switch OFF and perform self-diagnosis again.
*: DCU = Display control unit
CAUTION:
• When AV switch has a malfunction, you cannot start. Refer to AV-134, "
Unable to Operate All of AV
Switches (Unable to Start Self-Diagnosis)".
• When display unit has a malfunction, you cannot start. Refer to AV-132, "
Screen Is Not Shown".
Self-Diagnosis Codes
Green : Not malfunctioning.
Yellow : Cannot be judged by self-diagnosis results.
Red : Unit is malfunctioning.
Gray : Diagnosis has not been done.
WKIA1189E
SKIA4211E
Screen switch
Diagnosis No.
Switch color DCU* DISPLAY Audio unit NavigationGPS an-
tenna
Red×1
Gray×x2
xx 3
×××4
Diagnosis
No.Possible causeReference
page
1 Display control unit malfunction Refer to AV- 1 4 5
.
2 Display communication line between display control unit and display unit Refer to AV- 1 2 1
.
3Audio unit power supply and ground circuit
Audio communication line between display control unit and audio unitRefer to AV- 11 9
.
4NAVI control unit power supply and ground circuit
AV communication line between display control unit and NAVI control unitRefer to AV- 11 8
.