Infiniti Q45. Manual — part 318
VEHICLE INFORMATION AND INTEGRATED SWITCH SYSTEM /WITHOUT
NAVIGATION SYSTEM
DI-139
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DI
Vehicle Speed Signal Inspection
NKS001CV
1.
CHECK HARNESS
1.
Turn ignition switch OFF.
2.
Disconnect AV control unit connector and combination meter
connector.
3.
Check continuity between AV control unit harness connector
M77 terminal 33 and combination meter harness connector M41
terminal 17.
4.
Check continuity between AV control unit harness connector
M77 terminal 33 and ground.
OK or NG
OK
>> GO TO 2.
NG
>> Repair harness or connector.
2.
CHECK OUTPUT VOLTAGE
1.
Connect AV control unit connector.
2.
Turn ignition switch ON.
3.
Check voltage between AV control unit harness connector M77
terminal 33 and ground.
OK or NG
OK
>> GO TO 3.
NG
>> Replace AV control unit.
3.
CHECK VEHICLE SPEED SIGNAL
1.
Turn ignition switch OFF and connect combination meter con-
nector.
2.
Start engine and drive vehicle at approximately 40 km/h (25
MPH).
3.
Check voltage signal between AV control unit harness connector
M77 terminal 33 and ground.
OK or NG
OK
>> Replace AV control unit.
NG
>> Check combination meter. Refer to
DI-18, "Vehicle Speed Signal Inspection"
.
33 – 17
: Continuity should exist.
33 – Ground
: Continuity should not exist.
PKIA9691E
33 – Ground
: Approx. 3.5 V or more
PKIA9692E
33 – Ground:
PKIA9693E
PKIA1935E
DI-140
VEHICLE INFORMATION AND INTEGRATED SWITCH SYSTEM /WITHOUT
NAVIGATION SYSTEM
Illumination Control Signal Inspection
NKS001CW
1.
CHECK ILLUMINATION CONTROL SIGNAL
1.
Turn ignition switch ON.
2.
Check voltage between AV control unit harness connector M77
terminal 25 and ground.
OK or NG
OK
>> Replace AV control unit.
NG
>> Check harness between AV control unit and BCM.
Ignition Signal Inspection
NKS001CX
1.
CHECK FUSE
Check for blown AV control unit fuses.
OK or NG
OK
>> GO TO 2.
NG
>> If fuse is blown, be sure to eliminate cause of malfunction before installing new fuse. Refer to
2.
CHECK IGNITION SIGNAL
1.
Turn ignition switch OFF.
2.
Disconnect AV control unit connector.
3.
Check voltage between AV control unit harness connector M77
terminal 27 and ground.
OK or NG
OK
>> Replace AV control unit.
NG
>> Check harness between AV control unit and fuse.
25 – Ground
Lighting switch ON (1st position)
: Approx. 12 V
Lighting switch OFF
: Approx. 0 V
PKIA9694E
Unit
Power souse
Fuse No.
AV control unit
Ignition switch ON or START
1
Terminals
Ignition switch position
(+)
(–)
OFF
ON
Connector
Terminal
M77
27
Ground
0 V
Battery voltage
PKIA9695E
VEHICLE INFORMATION AND INTEGRATED SWITCH SYSTEM /WITHOUT
NAVIGATION SYSTEM
DI-141
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DI
RGB Screen Is Not Shown
NKS001CY
1.
CHECK HARNESS
1.
Turn ignition switch OFF.
2.
Disconnect AV control unit connector and display connector.
3.
Check continuity between AV control unit harness connector
M78 terminal 12 and display harness connector M82 terminal 8.
4.
Check continuity between AV control unit harness connector
M78 terminal 13 and display harness connector M82 terminal 5.
5.
Check continuity between AV control unit harness connector
M78 terminals 12, 13 and ground.
OK or NG
OK
>> GO TO 2.
NG
>> Repair harness or connector.
2.
CHECK HORIZONTAL SYNCHRONIZATION SIGNAL
1.
Connect AV control unit connector and display connector.
2.
Turn ignition switch ON.
3.
Select “Rearview” in “Confirmation/Adjustment” mode and dis-
play the rearview image on the screen.
4.
Check voltage signal between AV control unit harness connector
M78 terminals 13 and 10.
OK or NG
OK
>> GO TO 3.
NG
>> Replace display.
12 – 8
: Continuity should exist.
13 – 5
: Continuity should exist.
12 – Ground
: Continuity should not exist.
13 – Ground
PKIA9696E
13 – 10:
PKIA9697E
SKIA0163E
DI-142
VEHICLE INFORMATION AND INTEGRATED SWITCH SYSTEM /WITHOUT
NAVIGATION SYSTEM
3.
CHECK RGB AREA SIGNAL
1.
Press “INFO” switch.
2.
Check voltage signal between AV control unit harness connector
M78 terminals 12 and 10.
OK or NG
OK
>> Replace display.
NG
>> Replace AV control unit.
Color of RGB Image Is Not Proper
NKS001CZ
1.
CHECK COLOR BAR DIAGNOSIS
Check color tone by “SCREEN ADJUSTMENT” of “CONFIRMATION/ADJUSTMENT” function.
OK or NG
OK
>> INSPECTION END
NG
>> GO TO 2.
12 – 10:
PKIA9698E
SKIA0162E
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