Infiniti M45 (Y34). Manual — part 319
VEHICLE INFORMATION AND INTEGRATED SWITCH SYSTEM /WITHOUT
NAVIGATION SYSTEM
DI-121
C
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Power Supply and Ground Circuit Inspection for Display
AKS004OJ
1.
CHECK FUSES
Check the followings.
●
15A fuse [No. 52, located in fuse, fusible link and relay block (J/B)] is blown
●
10A fuse [No. 21, located in fuse block (J/B) NO. 1] is blown
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 POWER SUPPLY CIRCUIT
1.
Disconnect display connector.
2.
Check voltage between display harness connector M82 termi-
nals and ground.
OK or NG
OK
>> GO TO 3.
NG
>> Check harness for open or short between display and fuse.
3.
CHECK GROUND CIRCUIT
1.
Turn ignition switch OFF.
2.
Check continuity between display harness connector M82 termi-
nals 22 (B), 24 (B) and ground.
OK or NG
OK
>> Inspection end.
NG
>> Repair harness or connector.
Terminals
Ignition switch position
(+)
(–)
OFF
ACC
ON
Connector
Terminal
(Wire color)
M82
19 (L/B)
Ground
0V
Battery
voltage
Battery
voltage
21 (SB)
Ground
Battery
voltage
Battery
voltage
Battery
voltage
23 (SB)
Ground
Battery
voltage
Battery
voltage
Battery
voltage
SKIA0552E
Continuity should exist.
SKIA0553E
DI-122
VEHICLE INFORMATION AND INTEGRATED SWITCH SYSTEM /WITHOUT
NAVIGATION SYSTEM
Inspection of Multifunction Switch for Power Supply and Ground Circuit
AKS004OK
1.
CHECK POWER SUPPLY CIRCUIT
1.
Disconnect multifunction switch connector.
2.
Check voltage between multifunction switch harness connector
M83 terminal 1 (L/B) and ground.
OK or NG
OK
>> GO TO 2.
NG
>> Check harness for open or short between multifunction switch and fuse.
2.
CHECK GROUND CIRCUIT
1.
Turn ignition switch OFF.
2.
Check continuity between multifunction switch harness connec-
tor M83 terminal 2 (B) and ground.
OK or NG
OK
>> Inspection end.
NG
>> Repair harness or connector.
Vehicle Speed Signal Inspection
AKS004OL
1.
CHECK HARNESS
1.
Disconnect connectors of AV control unit and combination
meter.
2.
Check continuity between AV control unit harness connector
M77 terminal 33 (OR/L) and combination meter harness con-
nector M41 terminal 37 (OR/L).
3.
Check continuity between AV control unit harness connector
M77 terminal 33 (OR/L) and ground.
OK or NG
OK
>> GO TO 2.
NG
>>
●
Check connector housings for disconnected or loose terminals.
●
Repair harness or connector.
Terminals
Ignition switch position
(+)
(–)
OFF
ACC
ON
Connector
Terminal
(wire color)
M83
1 (L/B)
Ground
0V
Battery
voltage
Battery
voltage
SKIA0534E
Continuity should exist.
SKIA0535E
Continuity should exist.
Continuity should not exist.
SKIA4203E
VEHICLE INFORMATION AND INTEGRATED SWITCH SYSTEM /WITHOUT
NAVIGATION SYSTEM
DI-123
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2.
VEHICLE SPEED SIGNAL CHECK 1
1.
Connect AV control unit connector.
2.
Turn ignition switch ON.
3.
Check voltage between AV control unit harness connector M77
terminal 33 (OR/L) and ground.
OK or NG
OK
>> GO TO 3.
NG
>> Replace AV control unit.
3.
VEHICLE SPEED SIGNAL CHECK 2
1.
Connect combination meter connector.
2.
Start engine and drive vehicle at more than 40 km/h (25 MPH).
3.
Check voltage signal between AV control unit harness connector
M77 terminal 33 (OR/L) and ground.
OK or NG
OK
>> Replace AV control unit.
NG
>> Check combination meter. Refer to
.
Illumination Control Signal Inspection
AKS004OM
1.
CHECK ILLUMINATION CONTROL SIGNAL
1.
Turn ignition switch ON.
2.
Check voltage between AV control unit harness connector M77
terminal 25 (B/L) and ground.
OK or NG
OK
>> Replace AV control unit.
NG
>> Check harness for open or short between AV control unit and BCM.
Approx. 5V
SKIA3610E
33 (OR/L) - Ground
: Refer to
Reference Value for AV Control
Unit"
.
PKIA6793E
Terminals
Lighting switch
condition
Voltage (V)
(+)
(–)
Connector
Terminal
(Wire color)
M77
25 (R/L)
Ground
ON (1st position)
Approx. 12V
OFF
Approx. 0V
SKIA3611E
DI-124
VEHICLE INFORMATION AND INTEGRATED SWITCH SYSTEM /WITHOUT
NAVIGATION SYSTEM
Ignition Signal Inspection
AKS004ON
1.
CHECK IGNITION SIGNAL
1.
Disconnect AV control unit connector.
2.
Check voltage between AV control unit harness connector M77
terminal 27 (BR/W) and ground.
OK or NG
OK
>> Replace AV control unit.
NG
>> Check harness for open or short between AV control unit and fuse.
RGB Screen is Not Shown
AKS004OO
1.
CHECK HARNESS
1.
Disconnect connectors of AV control unit and display.
2.
Check continuity between AV control unit harness connector
M78 terminal 12 (B) and display harness connector M82 termi-
nal 8 (B).
3.
Check continuity between AV control unit harness connector
M78 terminal 13 (W) and display harness connector M82 termi-
nal 5 (W).
4.
Check continuity between AV control unit harness connector
M78 terminal 12 (B), 13 (W) and ground.
OK or NG
OK
>> GO TO 2.
NG
>>
●
Check connector housings for disconnected or loose terminals.
●
Repair harness or connector.
2.
CHECK HORIZONTAL SYNCHRONIZATION SIGNAL
1.
Connect connectors of AV control unit and display.
2.
Turn ignition switch ON.
3.
Check voltage signal between AV control unit harness connector
M78 terminals 13 (W) and 10.
OK or NG
OK
>> GO TO 3.
NG
>> Replace display.
Terminals
Ignition switch position
(+)
(-)
OFF
ACC
ON
Connector
Terminal
(Wire color)
M77
27 (BR/W)
Ground
0V
0V
Battery
voltage
SKIA3612E
Continuity should exist.
Continuity should exist.
Continuity should not exist.
SKIA3594E
13 (W) - 10
: Refer to
Reference Value for AV Control
Unit"
.
PKIA6794E
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