ignition INFINITI QX56 2006 Factory Service Manual
[x] Cancel search | Manufacturer: INFINITI, Model Year: 2006, Model line: QX56, Model: INFINITI QX56 2006Pages: 3383, PDF Size: 51.76 MB
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NAVIGATION SYSTEMAV-137
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Revision: November 2009 2006 QX56
4. CHECK 2: AUDIO-RX COMMUNICATION SIGNAL
1. Turn ignition switch OFF.
2. Disconnect display control unit connector M95.
3. Connect audio unit connector M45.
4. Turn ignition switch ON.
5. Check voltage between audio unit harness connector M45 ter- minal 65 and ground.
OK or NG
OK >> GO TO 5.
NG >> Replace audio unit. Refer to AV- 5 5 , "
AUDIO UNIT" .
5. CHECK 3: AUDIO-TX COMMUNICATION SIGNAL
Check signal between display control unit harness connector M95
terminal 40 and ground with CONSULT-ll or oscilloscope.
OK or NG
OK >> GO TO 6.
NG >> Replace display control unit. Refer to AV- 1 6 7 , "
DISPLAY
CONTROL UNIT" .
6. CHECK 4: AUDIO-RX COMMUNICATION SIGNAL
1. Turn ignition switch ON.
2. Check signal between display control unit harness connector M95 terminal 42 and ground with CONSULT-ll or oscilloscope.
OK or NG
OK >> Inspection End.
NG >> Replace audio unit. Refer to AV- 5 5 , "
AUDIO UNIT" .
Approx. 3.5V or more.
WKIA1771E
40 - Ground
: Refer to AV- 1 0 2 , "Terminals
and Reference Value for Dis-
play Control unit" .
SKIA4447E
42 - Ground : Refer to AV- 1 0 2 , "Terminals
and Reference Value for Dis-
play Control unit" .
SKIA4448E
Page 731 of 3383
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
Page 732 of 3383
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
Page 733 of 3383
AV-140
NAVIGATION SYSTEM
Revision: November 20092006 QX56
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 6 7 , "
DISPLAY CONTROL UNIT" .
CAN Communication Line CheckEKS00GEK
1. CHECK MONITOR DESCRIPTION
1. Start display control unit self-diagnosis. Refer to AV- 11 2 , "
Self-
Diagnosis Mode (DCU)" .
2. Select “CAN DIAG SUPPORT MONITOR”. Refer to AV- 1 2 4 ,
"CAN DIAG SUPPORT MONITOR" .
3. Record each item display description (OK/NG/UKNWN) displayed on the following CAN DIAG SUPPORT MONITOR Check Sheet.
CAN DIAG SUPPORT MONITOR Check Sheet
>> After filling in CAN DIAG SUPPORT MONITOR Check Sheet, GO TO LAN-26, "
CAN COMMUNI-
CATION" .
If NAVI Control Unit Detects That DVD-ROM Map is Not InsertedEKS00GEL
1. CHECK DVD-ROM
Make sure identified DVD-ROM map is inserted.
OK or NG
OK >> Replace NAVI control unit. Refer to AV- 1 6 8 , "NAVI CONTROL UNIT" .
NG >> Insert identified DVD-ROM map.
Item content
Error counter
Normal condition Error (Example)
CAN_COMM OKNG0-50
CAN_CIRC_1 OKUNKWN 0-50
CAN_CIRC_2 OKUNKWN 0-50
CAN_CIRC_3 OKUNKWN 0-50
CAN_CIRC_4 OKUNKWN 0-50
CAN_CIRC_5 OKUNKWN 0-50
CAN_CIRC_6 OKUNKWN 0-50
CAN_CIRC_7 OKUNKWN 0-50
CAN_CIRC_8 OKUNKWN 0-50
CAN_CIRC_9 OKUNKWN 0-50
SKIA4288E
Diagnosis item Screen displayDiagnosis item Screen display
CAN_COMM OKNG CAN_CIRC_5 OKUNKWN
CAN_CIRC_1 OKUNKWN CAN_CIRC_6 OKUNKWN
CAN_CIRC_2 OKUNKWN CAN_CIRC_7 OKUNKWN
CAN_CIRC_3 OKUNKWN CAN_CIRC_8 OKUNKWN
CAN_CIRC_4 OKUNKWN CAN_CIRC_9 OKUNKWN
Page 735 of 3383
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
Page 736 of 3383
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
Page 737 of 3383
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
Page 738 of 3383
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
Page 739 of 3383
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
Page 740 of 3383
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