turn signal INFINITI QX56 2006 Factory Service Manual

AV-138
NAVIGATION SYSTEM
Revision: November 20092006 QX56
Display Communication Line Check (Between Display Control Unit and Display
Unit)
EKS00GEI
1. CHECK HARNESS
1. Turn ignition switch OFF.
2. Disconnect display unit connector M93 and display control unit connector M95.
3. Check continuity between display control unit and display unit.
4. Check continuity between display control unit and ground.
OK or NG
OK >> GO TO 2.
NG >> Repair harness or connector.
2. CHECK 1: COMMUNICATION SIGNAL (DCU–DSP)
1. Connect display unit connector.
2. Turn ignition switch ON.
3. Check voltage between display unit harness connector M93 ter- minal 11 and ground.
OK or NG
OK >> GO TO 3.
NG >> Replace display unit. Refer to AV- 1 6 7 , "
DISPLAY UNIT"
.
3. CHECK 2: COMMUNICATION SIGNAL (DSP–DCU)
1. Turn ignition switch OFF.
2. Connect display control unit connector M95.
3. Turn ignition switch ON.
4. Check voltage between display control unit harness connector M95 terminal 38 and ground.
OK or NG
OK >> GO TO 4.
NG >> Replace display control unit. Refer to AV- 1 6 7 , "
DISPLAY
CONTROL UNIT" .
Terminals
Continuity
Display control unit Display unit
Connector Terminal Connector Terminal
M95 36
M93 11
Ye s
38 22
Terminals Continuity
Display control unit
—
Connector Terminal
M95 36
GroundNo
38
WKIA2019E
Approx. 3.5V or more.
WKIA1377E
Approx. 3.5V or more.
SKIA4453E

NAVIGATION SYSTEMAV-139
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Revision: November 2009 2006 QX56
4. CHECK 3: COMMUNICATION SIGNAL (DCU–DSP)
Check signal between display control unit harness connector M95
terminal 36 and ground with CONSULT-II or oscilloscope.
OK or NG
OK >> GO TO 5.
NG >> Replace display control unit. Refer to AV- 1 6 7 , "
DISPLAY
CONTROL UNIT" .
5. CHECK 4: COMMUNICATION SIGNAL (DSP–DCU)
Check signal between display control unit harness connector M95
terminal 38 and ground with CONSULT-II or oscilloscope.
OK or NG
OK >> Inspection End.
NG >> Replace display unit. Refer to AV- 1 6 7 , "
DISPLAY UNIT"
.
AV Communication Line Check (Between Display Control Unit and AV Switch)EKS00GEJ
1. CHECK AV SWITCH CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect display control unit connector M95 and AV switch connector M98.
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. 36 - Ground
: Refer to AV- 1 0 2 , "
Terminals
and Reference Value for Dis-
play Control unit" .
SKIA4452E
38 - Ground : Refer to AV- 1 0 2 , "Terminals
and Reference Value for Dis-
play Control unit" .
SKIA4453E
Terminals
Continuity
Display control unit AV switch
Connector Terminal Connector Terminal
M95 28
M98 6
Ye s
30 8
Terminals Continuity
Display control unit
—
Connector Terminal
M95 28
Ground No
30
WKIA1597E

AV-142
NAVIGATION SYSTEM
Revision: November 20092006 QX56
Operating Screen for Audio and A/C is Not Displayed When Showing NAVI
Screen
EKS00GEO
1. CHECK HARNESS
1. Turn ignition switch OFF.
2. Disconnect display control unit connector M95 and display unit connector M93.
3. Check continuity between display control unit harness connector M95 terminal 49, 51, 53, 55 and display unit harness connector
M93 terminal 21, 9, 20, 8.
4. Check continuity between display control unit harness connector M95 terminal 49, 51, 53, 55 and ground.
OK or NG
OK >> GO TO 2.
NG >> Repair harness.
2. CHECK HORIZONTAL SYNCHRONIZATION SIGNAL
1. Connect display control unit connector and display unit connec- tor.
2. Turn ignition switch ON.
3. Check signal between display control unit connector M95 termi- nals 55 and 49 with CONSULT-ll or oscilloscope.
OK or NG
OK >> GO TO 3.
NG >> Replace display unit. Refer to AV- 1 6 7 , "
DISPLAY UNIT"
.
3. CHECK VERTICAL SYNCHRONIZATION SIGNAL
1. Turn ignition switch ON.
2. Check signal between display control unit connector M95 termi- nals 53 and 49 with CONSULT-ll or oscilloscope.
OK or NG
OK >> GO TO 4.
NG >> Replace display unit. Refer to AV- 1 6 7 , "
DISPLAY UNIT"
.
Continuity should exist.
Continuity should not exist.
WKIA1965E
55 - 49 : Refer to
AV- 1 0 2 , "Terminals and Refer-
ence Value for Display Control unit" .
SKIA4305E
53 - 49 : Refer to AV- 1 0 2 , "Terminals and Refer-
ence Value for Display Control unit" .
WKIA1773E

NAVIGATION SYSTEMAV-143
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Revision: November 2009 2006 QX56
4. CHECK RGB AREA SIGNAL
1. Press the “TRIP” button.
2. Check signal between display control unit connector M95 termi- nals 51 and 49 with CONSULT-ll or oscilloscope.
OK or NG
OK >> Replace display unit. Refer to AV- 1 6 7 , "DISPLAY UNIT"
.
NG >> Replace display control unit. Refer to AV- 1 6 7 , "
DISPLAY
CONTROL UNIT" .
Color of RGB Image is Not Proper (Only NAVI Screen Looks Bluish)EKS00GEP
1. CHECK RGB HARNESS
1. Turn ignition switch OFF.
2. Disconnect NAVI control unit connector B152 and display control unit connector M95.
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. 51 - 49 : Refer to AV- 1 0 2 , "
Terminals and Refer-
ence Value for Display Control unit" .
SKIA4306E
Terminals
Continuity
BA
Connector Terminal Connector Terminal
NAVI control unit: B152 44
Display con-
trol unit: M95 44
Ye s
47 45
Terminals Continuity
B
—
Connector Terminal
NAVI control unit: B152 44
GroundNo
47
WKIA4215E

AV-144
NAVIGATION SYSTEM
Revision: November 20092006 QX56
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 B152 termi- nal 44 and 47 with CONSULT-ll or oscilloscope.

When the screen looks bluish.
Voltage signal between NAVI control unit connector B152 termi-
nal 44 and 47.
OK or NG
OK >> Replace display control unit. Refer to AV- 1 6 7 , "DISPLAY CONTROL UNIT" .
NG >> Replace NAVI control unit. Refer to AV- 1 6 8 , "
NAVI CONTROL UNIT" .
Color of RGB Image is Not Proper (Only NAVI Screen Looks Reddish)EKS00GEQ
1. CHECK RGB HARNESS
1. Turn ignition switch OFF.
2. Disconnect NAVI control unit connector B152 and display control unit connector M95.
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. 44 - 47
: Refer to AV- 1 0 0 , "
Terminals
and Reference Value for
NAVI Control Unit" .
WKIA4216E
Terminals
Continuity
BA
Connector Terminal Connector Terminal
NAVI control unit: B152 45 Display con-
trol unit:M95 46
Ye s
47 45
Terminals Continuity
B
—
Connector Terminal
NAVI control unit: B152 45
GroundNo
47
WKIA4217E

NAVIGATION SYSTEMAV-145
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Revision: November 2009 2006 QX56
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 B152 termi- nal 45 and 47 with CONSULT-ll or oscilloscope.

When the screen looks reddish.
Voltage signal between NAVI control unit connector B152 termi-
nal 45 and 47.
OK or NG
OK >> Replace display control unit. Refer to AV- 1 6 7 , "DISPLAY CONTROL UNIT" .
NG >> Replace NAVI control unit. Refer to AV- 1 6 8 , "
NAVI CONTROL UNIT" .
Color of RGB Image is Not Proper (Only NAVI Screen Looks Yellowish)EKS00GER
1. CHECK RGB HARNESS
1. Turn ignition switch OFF.
2. Disconnect NAVI control unit connector B152 and display control unit connector M95.
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. 45 - 47
: Refer to AV- 1 0 0 , "
Te r m i n a l s
and Reference Value for
NAVI Control Unit" .
WKIA4218E
Terminals
Continuity
BA
Connector Terminal Connector Terminal
NAVI control unit: B152 46 Display con-
trol unit:M95 48
Ye s
47 45
Terminals Continuity
B
—
Connector Terminal
NAVI control unit: B152 46
GroundNo
47
WKIA4219E

AV-146
NAVIGATION SYSTEM
Revision: November 20092006 QX56
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 B152 termi- nal 46 and 47 with CONSULT-ll or oscilloscope.

When the screen looks yellowish.
Voltage signal between NAVI control unit connector B152 termi-
nal 46 and 47.
OK or NG
OK >> Replace display control unit. Refer to AV- 1 6 7 , "DISPLAY CONTROL UNIT" .
NG >> Replace NAVI control unit. Refer to AV- 1 6 8 , "
NAVI CONTROL UNIT" .
Color of RGB Image is Not Proper (All Screens Look Bluish)EKS00GES
1. CHECK RGB HARNESS
1. Turn ignition switch OFF.
2. Disconnect display control unit connector M95 and display unit connector M93.
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. 46 - 47
: Refer to AV- 1 0 0 , "
Terminals
and Reference Value for
NAVI Control Unit" .
WKIA4220E
Terminals
Continuity
Display control unit Display unit
Connector Terminal Connector Terminal
M95 50
M93 17
Ye s
47 7
Terminals Continuity
Display control unit
—
Connector Terminal
M95 50
GroundNo
47
SKIA4353E

NAVIGATION SYSTEMAV-147
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Revision: November 2009 2006 QX56
2. CHECK RGB SIGNAL
1. Connect display control unit connector and display unit connec- tor.
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 and 47.
OK or NG
OK >> Replace display unit. Refer to AV- 1 6 7 , "DISPLAY UNIT" .
NG >> Replace display control unit. Refer to AV- 1 6 7 , "
DISPLAY CONTROL UNIT" .
Color of RGB Image is Not Proper (All Screens Look Reddish)EKS00GET
1. CHECK RGB HARNESS
1. Turn ignition switch OFF.
2. Disconnect display control unit connector M95 and display unit connector M93.
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. 50 - 47
: Refer to AV- 1 0 2 , "
Te r m i n a l s
and Reference Value for Dis-
play Control unit" .
SKIA4697E
Terminals
Continuity
Display control unit Display unit
Connector Terminal Connector Terminal
M95 52
M93 6
Ye s
47 7
Terminals Continuity
Display control unit
—
Connector Terminal
M95 52
GroundNo
47
SKIA4354E

AV-148
NAVIGATION SYSTEM
Revision: November 20092006 QX56
2. CHECK RGB SIGNAL
1. Connect display control unit connector and display unit connec- tor.
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 and 47.
OK or NG
OK >> Replace display unit. Refer to AV- 1 6 7 , "DISPLAY UNIT" .
NG >> Replace display control unit. Refer to AV- 1 6 7 , "
DISPLAY CONTROL UNIT" .
Color of RGB Image is Not Proper (All Screens Look Yellowish)EKS00GEU
1. CHECK RGB HARNESS
1. Turn ignition switch OFF.
2. Disconnect display control unit connector M95 and display unit connector M93.
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. 52 - 47
: Refer to AV- 1 0 2 , "
Terminals
and Reference Value for Dis-
play Control unit" .
SKIA4698E
Terminals
Continuity
Display control unit Display unit
Connector Terminal Connector Terminal
M95 54
M93 18
Ye s
47 7
Terminals Continuity
Display control unit
—
Connector Terminal
M95 54
GroundNo
47
SKIA4355E

NAVIGATION SYSTEMAV-149
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Revision: November 2009 2006 QX56
2. CHECK RGB SIGNAL
1. Connect display control unit connector and display unit connec- tor.
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 and 47.
OK or NG
OK >> Replace display unit. Refer to AV- 1 6 7 , "DISPLAY UNIT" .
NG >> Replace display control unit. Refer to AV- 1 6 7 , "
DISPLAY CONTROL UNIT" .
54 - 47 : Refer to
AV- 1 0 2 , "
Te r m i n a l s
and Reference Value for Dis-
play Control unit" .
SKIA4356E