Infiniti F50. Manual — part 319
VEHICLE INFORMATION AND INTEGRATED SWITCH SYSTEM /WITHOUT
NAVIGATION SYSTEM
DI-119
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Power Supply and Ground Circuit Inspection for AV Control Unit
EKS006E1
1.
CHECK FUSE
Check AV control unit fuses are not 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 AV control unit connector.
2.
Check voltage between AV control unit and ground.
OK or NG
OK
>> GO TO 3.
NG
>> Check harness for open or short between AV control unit and fuse.
3.
CHECK GROUND CIRCUIT
Check continuity between AV control unit harness connector M78
terminal 1 (B), 4 (B) and ground.
OK or NG
OK
>> Inspection end.
NG
>> Repair harness or connector.
Unit
Power source
Fuse No.
AV control unit
Battery power
47
Ignition switch ACC or ON
21
Terminals
Ignition switch position
(+)
(-)
OFF
ACC
ON
Connector
Terminal
(Wire color)
M78
2 (SB)
Ground
Battery
voltage
Battery
voltage
Battery
voltage
3 (SB)
Ground
Battery
voltage
Battery
voltage
Battery
voltage
6 (L/OR)
Ground
0V
Battery
voltage
Battery
voltage
SKIA3607E
Continuity should exist.
SKIA3608E
DI-120
VEHICLE INFORMATION AND INTEGRATED SWITCH SYSTEM /WITHOUT
NAVIGATION SYSTEM
Power Supply and Ground Circuit Inspection for Display
EKS006E2
1.
CHECK FUSES
●
Check 15A fuse [No. 52, located in fuse, fusible link and relay block (J/B)] is blown.
●
Check 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 connector M82 terminals 19 (L/
OR), 21 (SB), 23 (SB) and ground.
OK or NG
OK
>> GO TO 3.
NG
>> Check harness for open or short between display and fuse.
3.
CHECK GROUND CIRCUIT
Check continuity between display connector M82 terminal 22, 24
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/OR)
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
Terminals
Continuity
(+)
(–)
Connector
Terminal
(Wire color)
M82
22 (B)
Ground
Yes
M82
24 (B)
Ground
Yes
SKIA0553E
VEHICLE INFORMATION AND INTEGRATED SWITCH SYSTEM /WITHOUT
NAVIGATION SYSTEM
DI-121
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Inspection of Multifunction Switch for Power Supply and Ground Circuit
EKS006E3
1.
CHECK POWER SUPPLY CIRCUIT
1.
Disconnect multifunction switch connector.
2.
Check voltage between multifunction switch harness connector
M83 terminal 1 (L/OR) and ground.
OK or NG
OK
>> GO TO 3.
NG
>> Check harness for open or short between multifunction switch and fuse.
2.
CHECK GROUND CIRCUIT
Check continuity between multifunction switch harness connector
M83 terminal 2 (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)
M83
1 (L/OR)
Ground
0V
Battery
voltage
Battery
voltage
SKIA0534E
Continuity should exist.
SKIA0535E
DI-122
VEHICLE INFORMATION AND INTEGRATED SWITCH SYSTEM /WITHOUT
NAVIGATION SYSTEM
Vehicle Speed Signal Inspection
EKS006E4
1.
CHECK HARNESS
1.
Disconnect AV control unit and combination meter connector.
2.
Check continuity between AV control unit harness connector
M77 terminal 33 (OR/L) and ground.
3.
Check continuity between AV control unit harness connector
M77 terminal 33 (OR/L) and combination meter harness con-
nector M41 terminal 17 (OR/L).
OK or NG
OK
>> GO TO 2.
NG
>>
●
Check connector housings for disconnected or loose terminals.
●
Repair harness or connector.
2.
VEHICLE SPEED SIGNAL CHECK 1
1.
Connect AV control unit connector.
2.
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 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
Continuity should not exist.
Continuity should exist.
SKIA3609E
Approx. 3.5V or more
SKIA3610E
33 (OR/L) - Ground
: Refer to
nals and Reference Value
for AV Control Unit"
SKIA4143E
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