2004 INFINITI QX56 Air

AV-130
NAVIGATION SYSTEM
Revision: August 20072004 QX56
AV Communication Line Check (Between Display Control Unit and AV Switch)EKS007ME
1. CHECK AV SWITCH CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect display control unit connector and AV switch connector.
3. Check continuity between display control unit and AV switch.
4. Check continuity between display control unit and ground.
OK or NG
OK >> GO TO 2.
NG >> Repair harness or connector.
2. CHECK SELF-DIAGNOSIS OF DCU
1. Replace AV switch.
2. Connect display control unit connector and AV switch connector.
3. Turn ignition switch ON.
4. Start self-diagnosis of DCU and check the self-diagnosis result.
OK or NG
OK >> Inspection End.
NG >> Replace display control unit. Refer to AV- 1 5 8 , "
Removal and Installation of Display Control Unit" .
Te r m i n a l s
Continuity Display control unit AV switch
ConnectorTerminal
(Wire color)ConnectorTe r m i n a l
(Wire color)
M9528 (V)
M986 (V)
Ye s
30 (LG) 8 (LG)
Te r m i n a l s
Continuity Display control unit
—
Connector Terminal (Wire color)
M9528 (V)
Ground No
30 (LG)
WKIA1597E

AV-132
NAVIGATION SYSTEM
Revision: August 20072004 QX56
2. CHECK 2: DVD-ROM
1. Check DVD-ROM for dirt, scratches and warpage.
OK or NG
OK >> GO TO 3.
NG >> Replace DVD-ROM map.
3. CHECK 3: DVD-ROM
1. Insert same DVD-ROM to make sure same diagnosis result is found as last self-diagnosis.
OK or NG
OK >> Replace NAVI control unit. Refer to AV- 1 5 7 , "Removal and Installation of NAVI Control Unit" .
NG >> Replace DVD-ROM map.
If Connection Between NAVI Control Unit and GPS Antenna is MalfunctioningEKS007MI
1. CHECK GPS ANTENNA
1. Check cable for GPS antenna for damage.
OK or NG
OK >> GO TO 2.
NG >> Replace GPS antenna. Refer to AV- 1 5 7 , "
Removal and Installation of GPS Antenna" .
2. CHECK BY REPLACEMENT OF GPS ANTENNA
1. Replace other functional GPS antenna to try self-diagnosis again.
Result of self-diagnosis; Found same result?
Yes >> Replace NAVI control unit. Refer to AV- 1 5 7 , "Removal and Installation of NAVI Control Unit" .
No >> Replace GPS antenna. Refer to AV- 1 5 7 , "
Removal and Installation of GPS Antenna" .
Operating Screen for Audio and A/C is Not Displayed When Showing NAVI
Screen
EKS007MJ
1. CHECK HARNESS
1. Turn ignition switch OFF.
2. Disconnect display control unit connector and display unit connector.
3. Check continuity between display control unit harness connector M95 terminal 49, 51 (B), 53 (W), 55 (R)
and display unit harness connector M93 terminal 21, 9 (B), 20 (W), 8 (R).
4. Check continuity between display control unit harness connector
M95 terminal 49, 51 (B), 53 (W), 55 (R) and ground.
OK or NG
OK >> GO TO 2.
NG >> Repair harness.Continuity should exist.
Continuity should not exist.
WKIA1965E

AV-134
NAVIGATION SYSTEM
Revision: August 20072004 QX56
Color of RGB Image is Not Proper (Only NAVI Screen Looks Bluish)EKS007MK
1. CHECK RGB HARNESS
1. Turn ignition switch OFF.
2. Disconnect NAVI control unit connector and display control unit connector.
3. Check continuity between NAVI control unit and display control unit.
4. Check continuity between NAVI control unit and ground.

When the screen looks bluish.
OK or NG
OK >> GO TO 2.
NG >> Repair harness or connector.
2. CHECK RGB SIGNAL
1. Connect NAVI control unit connector and display control unit connector.
2. Turn ignition switch ON.
3. Display “Color bar” by “CONFIRMATION/ADJUSTMENT” mode.
4. Check signal between NAVI control unit connector B151 termi-
nal 18 (R) and 17 with CONSULT-ll or oscilloscope.

When the screen looks bluish.
Voltage signal between NAVI control unit connector B151 termi-
nal 18 (R) and 17.
OK or NG
OK >> Replace display control unit. Refer to AV- 1 5 8 , "Removal
and Installation of Display Control Unit" .
NG >> Replace NAVI control unit. Refer to AV- 1 5 7 , "
Removal and Installation of NAVI Control Unit" .
Te r m i n a l s
Continuity NAVI control unit Display control unit
ConnectorTerminal
(Wire color)ConnectorTe r m i n a l
(Wire color)
B15118 (R)
M9544 (R/L)
Ye s
17 45
Te r m i n a l s
Continuity NAVI control unit
—
Connector Terminal (Wire color)
B15118 (R)
Ground No
17
SKIA4349E
18 (R) – 17 : Refer to AV- 9 0 , "Te r m i n a l s
and Reference Value for
NAVI Control unit" .
SKIA4629E

NAVIGATION SYSTEM
AV-135
C
D
E
F
G
H
I
J
L
MA
B
AV
Revision: August 20072004 QX56
Color of RGB Image is Not Proper (Only NAVI Screen Looks Reddish)EKS007ML
1. CHECK RGB HARNESS
1. Turn ignition switch OFF.
2. Disconnect NAVI control unit connector and display control unit connector.
3. Check continuity between NAVI control unit and display control unit.
4. Check continuity between NAVI control unit and ground.

When the screen looks reddish.
OK or NG
OK >> GO TO 2.
NG >> Repair harness or connector.
2. CHECK RGB SIGNAL
1. Connect NAVI control unit connector and display control unit connector.
2. Turn ignition switch ON.
3. Display ″Color bar″ by ″CONFIRMATION/ADJUSTMENT″ mode.
4. Check signal between NAVI control unit connector B151 termi-
nal 21 (R/W) and 17 with CONSULT-ll or oscilloscope.

When the screen looks reddish.
Voltage signal between NAVI control unit connector B151 termi-
nal 21 (R/W) and 17.
OK or NG
OK >> Replace display control unit. Refer to AV-158, "Removal
and Installation of Display Control Unit" .
NG >> Replace NAVI control unit. Refer to AV-157, "
Removal and Installation of NAVI Control Unit" .
Te r m i n a l s
Continuity NAVI control unit Display control unit
ConnectorTe r m i n a l
(Wire color)ConnectorTerminal
(Wire color)
B15121 (R/W)
M9546 (R/W)
Ye s
17 45
Te r m i n a l s
Continuity NAVI control unit
—
Connector Terminal (Wire color)
B15121 (R/W)
Ground No
17
SKIA4350E
21 (R/W) – 17 : Refer to AV-90, "Te r m i na l s
and Reference Value for
NAVI Control unit" .
SKIA4630E

AV-136
NAVIGATION SYSTEM
Revision: August 20072004 QX56
Color of RGB Image is Not Proper (Only NAVI Screen Looks Yellowish)EKS007MM
1. CHECK RGB HARNESS
1. Turn ignition switch OFF.
2. Disconnect NAVI control unit connector and display control unit connector.
3. Check continuity between NAVI control unit and display control unit.
4. Check continuity between NAVI control unit and ground.

When the screen looks yellowish.
OK or NG
OK >> GO TO 2.
NG >> Repair harness or connector.
2. CHECK RGB SIGNAL
1. Connect NAVI control unit connector and display control unit connector.
2. Turn ignition switch ON.
3. Display ″Color bar″ by ″CONFIRMATION/ADJUSTMENT″ mode.
4. Check signal between NAVI control unit connector B151 termi-
nal 15 (B) and 17 with CONSULT-ll or oscilloscope.

When the screen looks yellowish.
Voltage signal between NAVI control unit connector B151 termi-
nal 15 (B) and 17.
OK or NG
OK >> Replace display control unit. Refer to AV- 1 5 8 , "Removal
and Installation of Display Control Unit" .
NG >> Replace NAVI control unit. Refer to AV- 1 5 7 , "
Removal and Installation of NAVI Control Unit" .
Te r m i n a l s
Continuity NAVI control unit Display control unit
ConnectorTerminal
(Wire color)ConnectorTe r m i n a l
(Wire color)
B15115 (B)
M9548 (B)
Ye s
17 45
Te r m i n a l s
Continuity NAVI control unit
—
Connector Terminal (Wire color)
B15115 (B)
Ground No
17
SKIA4351E
15 (B) – 17 : Refer to AV- 9 0 , "Te r m i n a l s
and Reference Value for
NAVI Control unit" .
SKIA4631E

NAVIGATION SYSTEM
AV-137
C
D
E
F
G
H
I
J
L
MA
B
AV
Revision: August 20072004 QX56
Color of RGB Image is Not Proper (All Screen Looks Bluish)EKS007MN
1. CHECK RGB HARNESS
1. Turn ignition switch OFF.
2. Disconnect display control unit connector and display unit connector.
3. Check continuity between display control unit and display unit.
4. Check continuity between display control unit and ground.

When the screen looks bluish.
OK or NG
OK >> GO TO 2.
NG >> Repair harness or connector.
2. CHECK RGB SIGNAL
1. Connect display control unit connector and display unit connector.
2. Turn ignition switch ON.
3. Display “Color bar” by “CONFIRMATION/ADJUSTMENT” mode.
4. Check the following with CONSULT-ll or oscilloscope.

When the screen looks bluish.
Voltage signal between display control unit connector M95 ter-
minal 50 (R/L) and 47.
OK or NG
OK >> Replace display unit. Refer to AV-158, "Removal and
Installation of Display Unit" .
NG >> Replace display control unit. Refer to AV-158, "
Removal and Installation of Display Control Unit" .
Te r m i n a l s
Continuity Display control unit Display unit
ConnectorTe r m i n a l
(Wire color)ConnectorTerminal
(Wire color)
M9550 (R/L)
M9317 (R/L)
Ye s
47 7
Te r m i n a l s
Continuity Display control unit
—
Connector Terminal (Wire color)
M9550 (R/L)
Ground No
47
SKIA4353E
50 (R/L) – 47 : Refer to AV-92, "Te r m i na l s
and Reference Value for Dis-
play Control unit" .
SKIA4697E

AV-138
NAVIGATION SYSTEM
Revision: August 20072004 QX56
Color of RGB Image is Not Proper (All Screen Looks Reddish)EKS007MO
1. CHECK RGB HARNESS
1. Turn ignition switch OFF.
2. Disconnect display control unit connector and display unit connector.
3. Check continuity between display control unit and display unit.
4. Check continuity between display control unit and ground.

When the screen looks reddish.
OK or NG
OK >> GO TO 2.
NG >> Repair harness or connector.
2. CHECK RGB SIGNAL
1. Connect display control unit connector and display unit connector.
2. Turn ignition switch ON.
3. Display “Color bar” by “CONFIRMATION/ADJUSTMENT” mode.
4. Check the following with CONSULT-ll or oscilloscope.

When the screen looks reddish.
Voltage signal between display control unit connector M95 ter-
minal 52 (R/W) and 47.
OK or NG
OK >> Replace display unit. Refer to AV- 1 5 8 , "Removal and
Installation of Display Unit" .
NG >> Replace display control unit. Refer to AV- 1 5 8 , "
Removal and Installation of Display Control Unit" .
Te r m i n a l s
Continuity Display control unit Display unit
ConnectorTerminal
(Wire color)ConnectorTe r m i n a l
(Wire color)
M9552 (R/W)
M936 (R/W)
Ye s
47 7
Te r m i n a l s
Continuity Display control unit
—
Connector Terminal (Wire color)
M9552 (R/W)
Ground No
47
SKIA4354E
52 (R/W) – 47 : Refer to AV- 9 2 , "Te r m i n a l s
and Reference Value for Dis-
play Control unit" .
SKIA4698E

NAVIGATION SYSTEM
AV-139
C
D
E
F
G
H
I
J
L
MA
B
AV
Revision: August 20072004 QX56
Color of RGB Image is Not Proper (All Screen Looks Yellowish)EKS007MP
1. CHECK RGB HARNESS
1. Turn ignition switch OFF.
2. Disconnect display control unit connector and display unit connector.
3. Check continuity between display control unit and display unit.
4. Check continuity between display control unit and ground.

When the screen looks yellowish.
OK or NG
OK >> GO TO 2.
NG >> Repair harness or connector.
2. CHECK RGB SIGNAL
1. Connect display control unit connector and display unit connector.
2. Turn ignition switch ON.
3. Display “Color bar” by “CONFIRMATION/ADJUSTMENT” mode.
4. Check the following with CONSULT-ll or oscilloscope.

When the screen looks yellowish.
Voltage signal between display control unit connector M95 ter-
minal 54 (B) and 47.
OK or NG
OK >> Replace display unit. Refer to AV-158, "Removal and
Installation of Display Unit" .
NG >> Replace display control unit. Refer to AV-158, "
Removal and Installation of Display Control Unit" .
Te r m i n a l s
Continuity Display control unit Display unit
ConnectorTe r m i n a l
(Wire color)ConnectorTerminal
(Wire color)
M9554 (B)
M9318 (B)
Ye s
47 7
Te r m i n a l s
Continuity Display control unit
—
Connector Terminal (Wire color)
M9554 (B)
Ground No
47
SKIA4355E
54 (B) – 47 : Refer to AV-92, "Te r m i na l s
and Reference Value for Dis-
play Control unit" .
SKIA4356E