2007 INFINITI QX56 turn signal

AV-116
< SERVICE INFORMATION >
NAVIGATION SYSTEM
1. Connect display control unit connector.
2. Turn ignition switch ON.
3. Check voltage between display control unit harness connector
M94 terminal 16 and ground.
OK or NG
OK >> GO TO 3.
NG >> Replace display control unit. Refer to AV-145, "
Removal
and Installation".
3.CHECK 2: VEHICLE SPEED SIGNAL
1. Connect combination meter connector M24 and NAVI control
unit connector B152.
2. Drive vehicle at a constant speed.
3. Check signal between display control unit harness connector
M94 terminal 16 and ground with CONSULT-ll or oscilloscope.
OK or NG
OK >> Replace display control unit. Refer to AV-145, "Removal
and Installation".
NG >> Check combination meter system. Refer to DI-17, "
Vehicle Speed Signal Inspection".
Illumination Signal Inspection for NAVI Control UnitINFOID:0000000003533730
1.CHECK ILLUMINATION SIGNAL
1. Turn the ignition switch ON.
2. Check voltage between NAVI control unit and ground.
OK or NG
OK >> Replace NAVI control unit. Refer to AV-145, "Removal
and Installation".
NG >> Check harness for open or short between NAVI control unit and IPDM E/R.
Illumination Signal Inspection for Display Control UnitINFOID:0000000003533731
1.CHECK ILLUMINATION SIGNALApprox. 3.5V or more
SKIA4297E
16 - Ground : Refer to AV-91, "Terminal
and Reference Value for Dis-
play Control unit".
SKIA4616E
Te r m i n a l s
Lighting switch position
(+)
(–)
Connector Terminal1st or 2nd po-
sitionOFF
B152 61 GroundBattery
voltageApprox. 0V
WKIA4211E

NAVIGATION SYSTEM
AV-117
< SERVICE INFORMATION >
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1. Turn ignition switch ON.
2. Check voltage between display control unit and ground.
OK or NG
OK >> Replace display control unit. Refer to AV-145, "Removal
and Installation".
NG >> Check harness for open or short between display control unit and IPDM E/R.
Ignition Signal Inspection for NAVI Control UnitINFOID:0000000003533732
1.CHECK IGNITION SIGNAL
1. Disconnect NAVI control unit connector B152.
2. Turn ignition switch ON.
3. Check voltage between NAVI control unit harness connector
B152 terminal 63 and ground.
OK or NG
OK >> Replace NAVI control unit. Refer to AV-145, "Removal
and Installation".
NG >> Check harness for open or short between NAVI control
unit and fuse.
Ignition Signal Inspection for Display Control UnitINFOID:0000000003533733
1.CHECK IGNITION SIGNAL
1. Disconnect display control unit connector M94.
2. Turn ignition switch ON.
3. Check voltage between display control unit harness connector
M94 terminal 12 and ground.
OK or NG
OK >> Replace display control unit. Refer to AV-145, "Removal
and Installation".
NG >> Check harness for open or short between display con-
trol unit and fuse.
Reverse Signal Inspection for NAVI Control UnitINFOID:0000000003533734
1.CHECK REVERSE LAMP
1. Turn ignition switch ON.
2. Place A/T selector lever into R-position. Do back-up lamps come on?
YES or NO
YES >> GO TO 2.
NO >> Check back-up lamp system. Refer to LT- 8 0
.
2.CHECK REVERSE SIGNAL
Te r m i n a l s
Lighting switch position
(+)
(–)
Connector Terminal1st or 2nd po-
sitionOFF
M94 14 GroundBattery
voltageApprox. 0V
SKIA4299E
Battery voltage should exist.
WKIA4212E
Battery voltage should exist.
WKIA1230E

AV-118
< SERVICE INFORMATION >
NAVIGATION SYSTEM
1. Disconnect NAVI control unit connector B152.
2. Turn ignition switch ON.
3. With the A/T selector lever in R-position, check voltage between
NAVI control unit and ground.
OK or NG
OK >> Replace NAVI control unit. Refer to AV-145, "Removal and Installation".
NG >> Check harness for open or short between NAVI control unit and back-up lamp position relay.
Reverse Signal Inspection for Display Control UnitINFOID:0000000003533735
1.CHECK REVERSE LAMP
1. Turn ignition switch ON.
2. Place A/T selector lever into R-position. Do back-up lamps come on?
YES or NO
YES >> GO TO 2.
NO >> Check back-up lamp system. Refer to LT- 8 0
.
2.CHECK REVERSE SIGNAL
1. Disconnect display control unit connector M94.
2. Turn ignition switch ON.
3. With the A/T selector lever in R-position, check voltage between
display control unit and ground.
OK or NG
OK >> Replace display control unit. Refer to AV-145, "Removal and Installation".
NG >> Check harness for open or short between display control unit and back-up lamp position relay.
AV Communication Line Check (Between Display Control Unit and NAVI Control Unit)
INFOID:0000000003533736
1.CHECK POWER SUPPLY AND GROUND CIRCUIT
Check power supply and ground circuit for NAVI control unit. Refer to AV-110, "
Power Supply and Ground Cir-
cuit Inspection for NAVI Control Unit".
OK or NG
OK >> GO TO 2.
NG >> Check the malfunctioning parts.
2.CHECK 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.
Te r m i n a l s
Selector lever position
(+)
(–)
Connector Terminal R-positionOther than R-po-
sition
B152 65 Ground Battery voltage Approx. 0V
WKIA4213E
Te r m i n a l s
Selector lever position
(+)
(–)
Connector Terminal R-positionOther than
R-position
M94 6 Ground Battery voltage Approx. 0V
SKIA4303E

AV-120
< SERVICE INFORMATION >
NAVIGATION SYSTEM
OK or NG
OK >> GO TO 3.
NG >> Repair harness or connector.
3.CHECK 1: AUDIO-TX COMMUNICATION SIGNAL
1. Connect display control unit connector.
2. Turn ignition switch ON.
3. Check voltage between display control unit harness connector
M95 terminal 42 and ground.
OK or NG
OK >> GO TO 4.
NG >> Replace display control unit. Refer to AV-145, "
Removal
and Installation".
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-46, "
Removal and
Installation".
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-145, "
Removal
and Installation".
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-46, "
Removal and
Installation". Approx. 3.5V or more.
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Approx. 3.5V or more.
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40 - Ground : Refer to AV-91, "Terminal
and Reference Value for Dis-
play Control unit".
SKIA4447E
42 - Ground : Refer to AV-91, "Terminal
and Reference Value for Dis-
play Control unit".
SKIA4448E

NAVIGATION SYSTEM
AV-121
< SERVICE INFORMATION >
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Display Communication Line Check (Between Display Control Unit and Display Unit)
INFOID:0000000003533738
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-145, "
Removal and
Installation".
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-145, "
Removal
and Installation".
4.CHECK 3: COMMUNICATION SIGNAL (DCU–DSP)
Te r m i n a l s
Continuity Display control unit Display unit
Connector Terminal Connector Terminal
M9536
M9311
Ye s
38 22
Te r m i n a l s
Continuity Display control unit
—
Connector Terminal
M9536
Ground No
38
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Approx. 3.5V or more.
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Approx. 3.5V or more.
SKIA4453E

AV-122
< SERVICE INFORMATION >
NAVIGATION SYSTEM
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-145, "
Removal
and Installation".
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-145, "
Removal and
Installation".
AV Communication Line Check (Between Display Control Unit and AV Switch)
INFOID:0000000003533739
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.
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
36 - Ground : Refer to AV-91, "Terminal
and Reference Value for Dis-
play Control unit".
SKIA4452E
38 - Ground : Refer to AV-91, "Terminal
and Reference Value for Dis-
play Control unit".
SKIA4453E
Te r m i n a l s
Continuity Display control unit AV switch
Connector Terminal Connector Terminal
M9528
M986
Ye s
30 8
Te r m i n a l s
Continuity Display control unit
—
Connector Terminal
M9528
Ground No
30
WKIA1597E

AV-124
< SERVICE INFORMATION >
NAVIGATION SYSTEM
2.CHECK 2: DVD-ROM
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
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-145, "Removal and Installation".
NG >> Replace DVD-ROM map.
If Connection Between NAVI Control Unit and GPS Antenna Is Malfunctioning
INFOID:0000000003533743
1.CHECK GPS ANTENNA
Check cable for GPS antenna for damage.
OK or NG
OK >> GO TO 2.
NG >> Replace GPS antenna. Refer to AV-145, "
Removal and Installation".
2.CHECK BY REPLACEMENT OF GPS ANTENNA
Replace with other functional GPS antenna to try self-diagnosis again.
Result of self-diagnosis; Found same result?
YES >> Replace NAVI control unit. Refer to AV-145, "Removal and Installation".
NO >> Replace GPS antenna. Refer to AV-145, "
Removal and Installation".
Operating Screen for Audio and A/C Is Not Displayed When Showing NAVI Screen
INFOID:0000000003533744
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 SIGNALContinuity should exist.
Continuity should not exist.
WKIA1965E

NAVIGATION SYSTEM
AV-125
< SERVICE INFORMATION >
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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-145, "
Removal and
Installation".
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-145, "
Removal and
Installation".
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-145, "Removal and
Installation".
NG >> Replace display control unit. Refer to AV-145, "
Removal
and Installation".
Color of RGB Image Is Not Proper (Only NAVI Screen Looks Bluish)INFOID:0000000003533745
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.55 - 49 : Refer to AV-91, "
Terminal and Reference
Value for Display Control unit".
SKIA4305E
53 - 49 : Refer to AV-91, "Terminal and Reference
Value for Display Control unit".
WKIA1773E
51 - 49 : Refer to AV-91, "Terminal and Reference
Value for Display Control unit".
SKIA4306E
Te r m i n a l s
Continuity BA
Connector Terminal Connector Terminal
NAVI control
unit: B15244
Display control
unit: M9544
Ye s
47 45
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