Power supply INFINITI FX35 2004 Service Manual

AV-146
NAVIGATION SYSTEM
Revision: 2004 November 2004 FX35/FX45
Power Supply and Ground Circuit Check for Display Control UnitAKS00BN8
1. CHECK FUSE
Make sure that the following fuses of the display control unit are not blown.
OK or NG
OK >> GO TO 2.
NG >> If fuse is blown, be sure to eliminate case of malfunction before installing new fuse. Refer to PG-3,
"POWER SUPPLY ROUTING CIRCUIT" .
2. CHECK POWER SUPPLY CIRCUIT
1. Check voltage between display control unit harness connector
terminals and ground.
OK or NG
OK >> GO TO 3.
NG >> Repair harness or connector.
3. CHECK GROUND CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect display control unit.
3. Check continuity between display control unit harness connector
M75 terminal 3 (B) and ground.
OK or NG
OK >> INSPECTION END
NG >> Repair harness or connector.
Unit Signal Fuse No.
Display control unitBattery power supply 32
ACC power supply 6
Terminals Ignition switch position
(+)
(–) OFF ACC ON
ConnectorTerminal
(Wire color)
M751 (W/L)
GroundBattery
voltageBattery
voltageBattery
voltage
10 (LG/R) 0VBattery
voltageBattery
voltage
SKIA8930E
3 – Ground : Continuity should exist.
PKIA2855E

NAVIGATION SYSTEM
AV-147
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AV
Revision: 2004 November 2004 FX35/FX45
Power Supply and Ground Circuit Check for DisplayAKS00BN9
1. CHECK DISPLAY CONTROL UNIT POEWR SUPPLY AND GROUND CIRCUIT
Check display control unit power supply and ground circuit. Refer to AV- 1 2 3 , "
Terminals and Reference Value
for Display Control Unit" .
OK or NG
OK >> GO TO 2.
NG >> Repair malfunctioning parts.
2. CHECK POWER SUPPLY CIRCUIT
1. Turn ignition switch ON.
2. Check voltage between display harness connector M63 termi-
nals 2 (W/G), 3 (BR/W) and ground.
OK or NG
OK >> GO TO 4.
NG >> GO TO 3.
3. CHECK HARNESS
1. Turn ignition switch OFF.
2. Disconnect display connector and display control unit connector.
3. Check continuity between display harness connector M63 termi-
nals 2 (W/G), 3 (BR/W) and display control unit harness connec-
tor M75 terminals 2 (W/G), 4 (BR/W).
4. Check continuity between display harness connector M63 termi-
nals 2 (W/G), 3 (BR/W) and ground.
OK or NG
OK >> Replace display control unit.
NG >> Repair harness or connector.
4. CHECK GROUND CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect display connector.
3. Check continuity between display harness connector M63 termi-
nal 13 (P), 14 (P/L) and ground.
OK or NG
OK >> GO TO 6.
NG >> GO TO 5.2, 3 – Ground : Approx. 9V
SKIA8934E
2 – 2 : Continuity should exist.
3 – 4 : Continuity should exist.
2, 3 – Ground : Continuity should not exist.
SKIB0450E
13, 14 – Ground : Continuity should exist.
SKIB0448E

NAVIGATION SYSTEM
AV-149
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AV
Revision: 2004 November 2004 FX35/FX45
Power Supply and Ground Circuit Check for A/C and AV SwitchAKS00BNA
1. CHECK FUSE
Make sure that the following fuses of the A/C and AV switch are not blown.
OK or NG
OK >> GO TO 2.
NG >> If fuse is blown, be sure to eliminate case of malfunction before installing new fuse. Refer to PG-3,
"POWER SUPPLY ROUTING CIRCUIT" .
2. CHECK POWER SUPPLY CIRCUIT
1. Check voltage between AC and AV switch harness connector
terminals and ground.
OK or NG
OK >> GO TO 3.
NG >> Repair harness or connector.
3. CHECK GROUND CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect A/C and AV switch connector.
3. Check continuity between A/C and AV switch harness connector
M64 terminals 5 (B) and ground.
OK or NG
OK >> INSPECTION END
NG >> Repair harness or connector.
Vehicle Speed Signal Check for NAVI Control UnitAKS00BNB
1. VEHICLE SPEED OPERATION CHECK
Does speedmeter is operated normally?
YES or NO
YES >> GO TO 2.
NO >> Check combination meter trouble diagnosis. Refer to DI-13, "
Diagnosis Flow" .
Unit Signal Fuse No.
A/C and AV switchBattery power supply 32
ACC power supply 6
Terminals Ignition switch position
(+)
(–) OFF ACC ON
ConnectorTe r m i n a l
(Wire color)
M641 (W/L)
GroundBattery
voltageBattery
voltageBattery
voltage
2 (LG/R) 0VBattery
voltageBattery
voltage
SKIA8937E
5 – Ground : Continuity should exist.
SKIA8938E

NAVIGATION SYSTEM
AV-153
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AV
Revision: 2004 November 2004 FX35/FX45
2. CHECK REVERSE SIGNAL
1. With the selector lever in R-position, check voltage between
NAVI control unit and ground.
OK or NG
OK >> INSPECTION END
NG >> Repair harness or connector.
Reverse Signal Check for Display Control UnitAKS00BNI
1. CHECK REVERSE LAMP
1. Turn ignition switch ON.
2. Selector lever into R-position.
Does
“R” in the shift position indicator come on?
YES >> GO TO 2.
NO >> Check back-up lamp system. Refer to LT- 1 2 5 , "
BACK-UP LAMP" .
2. CHECK REVERSE SIGNAL
1. With the selector lever in R-position, check voltage between dis-
play control unit and ground.
OK or NG
OK >> INSPECTION END
NG >> Repair harness or cnnector.
When Malfunctioning Connection Between Display Control Unit and NAVI Con-
trol Unit
AKS00BNJ
1. CHECK NAVI CONTROL UNIT POWER SUPPLY AND GROUND CIRCUIT
1. Check NAVI control unit power supply and ground circuit. Refer to AV- 1 4 5 , "
Power Supply and Ground
Circuit Check for NAVI Control Unit" .
OK or NG
OK >> GO TO 2.
NG >> Repair malfunctioning parts.
Terminals
Condition Voltage (+)
(–)
ConnectorTe r m i n a l
(Wire color)
B207 27 (OR) GroundSelect
leverR-position Approx. 12V
Except R-
positionApprox. 0V
SKIA9498E
Terminals
Condition Voltage (+)
(–)
ConnectorTe r m i n a l
(Wire color)
M75 6 (OR) GroundSelect
leverR-position Approx. 12V
Except R-
positionApprox. 0V
SKIA8942E

AV-154
NAVIGATION SYSTEM
Revision: 2004 November 2004 FX35/FX45
2. CHECK HARNESS
1. Turn ignition switch OFF.
2. Disconnect NAVI control unit connector and display control unit connector.
3. Check continuity between NAVI control unit harness connector
B207 terminals 44 (L), 45(P) and display control unit harness
connector M76 terminals 32 (BR), 34 (Y).
4. Check continuity between NAVI control unit harness connector
B207 terminals 44 (L), 45 (P) and ground.
OK or NG
OK >> GO TO 3.
NG >> Repair harness or connector.
3. SELF-DIAGNOSIS OF DCU
1. Replace NAVI control unit.
2. Connect NAVI control unit connector and display control unit 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.
When Malfunctioning Connection Between Display Control Unit and Audio UnitAKS00BNK
1. CHECK POWER SUPPLY AND GROUND CIRCUIT
Check audio unit power supply and ground circuit. Refer to AV- 3 9 , "
Power Supply Circuit Inspection" .
OK or NG
OK >> GO TO 2.
NG >> Repair malfunctioning parts.
2. CHECK HARNESS
1. Turn ignition switch OFF.
2. Disconnect audio unit connector and display control unit connector.
3. Check continuity between display control unit harness connector
M76 terminals 40 (LG), 42 (B/Y) and audio unit harness connec-
tor M60 terminals 23 (LG), 21 (B/Y).
4. Check continuity between display control unit harness connector
M76 terminals 40 (LG), 42 (B/Y) and ground.
OK or NG
OK >> GO TO 3.
NG >> Repair harness or connector.44 – 32 : Continuity should exist.
45 – 34 : Continuity should exist.
44, 45 – Ground : Continuity should not exist.
PKIA2873E
40 – 23 : Continuity should exist.
42 – 21 : Continuity should exist.
40, 42 – Ground : Continuity shold not exist.
PKIA2875E

NAVIGATION SYSTEM
AV-167
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AV
Revision: 2004 November 2004 FX35/FX45
Guide Sound is Not HeardAKS00BP7
1. CHECK VOICE GUIDE SETTING

While driving in the dark pink route, voice guide does not operate. (note)

Is volume setting not switched ON?
NOTE:
Voice guide is only available at intersections that satisfy certain conditions (indicated by

on the map). There-
fore, guidance may not be given even when the route on the map changes direction.
YES or NO
YES >> GO TO 2.
NO >> Switch the setting ON and turn the volume up.
2. CHECK HARNESS
1. Turn ignition switch OFF.
2. Disconnect NAVI control unit connector and audio unit connector.
3. Check continuity between NAVI control unit harness connector
B208 terminals 7 (LG), 8 (PU) and audio unit harness connector
M60 terminals 36 (B/R), 34 (W/R).
4. Check continuity between NAVI control unit harness connector
B208 terminals 7 (LG), 8 (PU) and ground.
Ok or NG
OK >> GO TO 3.
NG >> Repair harness or connector.
3. CHECK VOICE GUIDE
1. Connect NAVI control unit connector and audio unit connector.
2. Turn ignition switch ON.
3. Check signal between NAVI control unit harness connector
B208 terminal 7 (LG) and 8 (PU) with CONSULT-ll or oscillo-
scope.
OK or NG
OK >> Replace audio unit.
NG >> Replace NAVI control unit.
Screen is Not ShownAKS00BNW
1. CHECK DISPLAY POWER SUPPLY AND GROUND CIRCUIT
Check display power supply and ground circuit. Refer to AV- 1 4 7 , "
Power Supply and Ground Circuit Check for
Display" .
OK or NG
OK >> Replace display.
NG >> Repair malfunctioning parts.7 – 36 : Continuity shold exist.
8 – 34 : Continuity shold exist.
7, 8 – Ground : Continuity shold not exist.
PKIA2906E
7 – 8 : Refer to AV- 1 2 1 , "Te r m i n a l s
and Reference Value for NAVI
Control Unit" .
PKIA2907E

NAVIGATION SYSTEM
AV-169
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AV
Revision: 2004 November 2004 FX35/FX45
3. CHECK HORIZONTAL SYNCHRONIZING SIGNAL
1. Check signal between display control unit harness connector
M76 terminals 55 (R) and 49 with CONSULT-ll or oscilloscope.
OK or NG
OK >> Replace display control unit.
NG >> Replace display.
TRIP, FUEL ECON and MAINTENANCE Screens are Not ShownAKS00BNY
1. CHECK IGNITION SIGNAL
Check ignition signal. Refer to AV- 1 5 2 , "
Ignition Signal Check for Display Control Unit" .
OK or NG
OK >> GO TO 2.
NG >> Repair malfunctioning parts.
2. CHECK POWER SUPPLY AND GROUND CIRCUIT
Check power supply circuit for display. Refer to AV- 1 4 7 , "
Power Supply and Ground Circuit Check for Display"
.
OK or NG
OK >> GO TO 3.
NG >> Repair malfunctioning parts.
3. CHECK COMMUNICATION LINE
Check display communication line. Refer to AV- 1 5 6 , "
When Malfunctioning Connection Between Display Con-
trol Unit and Display" .
OK or NG
OK >> Replace display.
NG >> Check the malfunctioning parts.
Average Fuel Economy Displayed is Not Shown (“***” is Shown)AKS00BNZ
1. CHECK VEHICLE SPEED SIGNAL
Check vehicle speed signal. Refer to AV- 1 5 0 , "
Vehicle Speed Signal Check for Display Control Unit" .
OK or NG
OK >> GO TO 2.
NG >> Repair malfunctioning parts.
2. CHECK CAN COMMUNICATION LINE
Check CAN communication line. Refer to AV- 1 5 8 , "
CAN Communication Line Check" .
OK or NG
OK >> GO TO 3.
NG >> After filling out CAN DIAG SUPPORT MONITOR check sheet, GO TO LAN-4, "
Precautions When
Using CONSULT-II" . 55 – 49 : Refer to AV- 1 2 3 , "
Te r m i n a l s
and Reference Value for Dis-
play Control Unit" .
PKIA2888E

NAVIGATION SYSTEM
AV-171
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AV
Revision: 2004 November 2004 FX35/FX45
2. CHECK IGNITION SIGNAL FOR DISPLAY CONTROL UNIT
Check ignition signal for display control unit. Refer to AV- 1 5 2 , "
Ignition Signal Check for Display Control Unit" .
OK or NG
OK >> GO TO 3.
NG >> Repair malfunctioning parts.
3. CHECK CAN COMMUNICATION LINE
Check CAN communication line. Refer to AV- 1 5 8 , "
CAN Communication Line Check" .
OK or NG
OK >> GO TO 3.
NG >> After filling out CAN DIAG SUPPORT MONITOR check sheet, GO TO LAN-4, "
Precautions When
Using CONSULT-II" .
Unable to Operate All of A/C and AV switch (Unable to start Self-Diagnosis)AKS00BO3
1. A/C AND AV SWITCH SELF-DIAGNOSIS
Start A/C and AV switch self-diagnosis. Refer to AV- 1 4 4 , "
A/C and AV Switch Self-Diagnosis Function" .
OK or NG
OK >> GO TO 3.
NG >> GO TO 2.
2. CHECK A/C AND AV SWITCH POWER SUPPLY AND GROUND CIRCUIT
Check A/C and AV switch power supply and ground circuit. Refer to AV- 1 4 9 , "
Power Supply and Ground Cir-
cuit Check for A/C and AV Switch" .
OK or NG
OK >> Replace A/C and AV switch.
NG >> Repair malfunctioning parts.
3. CHECK DISPLAY CONTROL UNIT POWER SUPPLY AND GROUND CIRCUIT
Check display control unit power supply and ground circuit. Refer to AV- 1 4 6 , "
Power Supply and Ground Cir-
cuit Check for Display Control Unit" .
OK or NG
OK >> GO TO 4.
NG >> Repair malfunctioning parts.
4. CHECK A/C AND AV SWITCH CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect display control unit connector and A/C and AV switch connector.
3. Check continuity between display control unit harness connector
M76 terminals 28 (B/R), 30 (W/R) and A/C and AV switch har-
ness connector M64 terminals 6 (B/R), 8 (W/R).
4. Check continuity between display control unit connector M76
terminals 28 (B/R), 30 (W/R) and ground.
OK or NG
OK >> GO TO 5.
NG >> Repair harness or connector.28 – 6 : Continuity shold exist.
30 – 8 : Continuity shold exist.PKIA2885E

AV-188
INFINITI MOBILE ENTERTAINMENT SYSTEM
Revision: 2004 November 2004 FX35/FX45
Terminals and Reference Value for DVD PlayerAKS00BOX
Terminal
(Wire color)
ItemSignal
input/
outputCondition
Reference valueExample of symp-
tom
(+) (-)Ignition
switchOperation
1 (L) 2 (R)MES output
signal (LH)
Output ACCRear AV
switch is ONNo sound
from speaker LH
3 (LG) 4 (PU)MES output
signal (RH)No sound
from speaker RH
8–Shield – – – – –
9
(Y/B)GroundAudio ON
signal (MES -
H/U) Output ACCPush “POWER”
switch of DVD
playerApprox. 5VSystem dose not
work properly
10
(R/Y)GroundIllumination
control signalInput OFFIllumination con-
trol switch is oper-
ated by lighting
switch in 1st posi-
tion.Changes between approx. 0 and
approx. 12V.DVD player illumi-
nation does not
come on then light-
ing switch is ON
11
(L/W)GroundControl sig-
nal (H/U -
MES)Input ACCPush “POWER”
switch of DVD
playerApprox. 5VSystem dose not
work properly
12
(R/L)GroundIllumination
signalInput OFFLighting switch is
ON (1st position).Approx. 12VDVD player illumi-
nation dose not
come on then light-
ing switch is ON Lighting switch
OFF.Approx. 0V
15
(LG/R)GroundACC power
supplyInput ACC – Battery voltageSystem does not
work properly
16
(W/L)GroundBattery
power supplyInput OFF – Battery voltageSystem dose not
work properly
17 (G) 19 (LG)MES output
signal (Com-
mon)Output ACCPlay CD or DVD
videoApprox. 0V –
18 (L) 19 (LG)MES output
signal (L+)Output ACCPlay CD or DVD
videoNo sound from
head phone LH
19 (LG) Ground Ground – ON – Approx. 0V –
20 (Y) 19 (LG)MES output
signal (R+)Output ACCPlay CD or DVD
videoNo sound from
head phone RH
21 (L) GroundACC power
supplyOutput ACC – Approx. 5VDisplay does not
work properly
22 (B) Ground Ground – ON – Approx. 0V –
SKIA0177E
SKIA5828E
SKIA5828E

INFINITI MOBILE ENTERTAINMENT SYSTEM
AV-189
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Revision: 2004 November 2004 FX35/FX45
Terminals and Reference Value for DVD DisplayAKS00BOY
23
(OR)24 (W)VIDEO out-
put signalOutput ACC Play DVD video No picture
26 GroundShield
(Video)– ON – Approx. 0V –
27 (PU) Ground Ground – ON – Approx. 0V –
29
(GY)GroundDVD commu-
nication sig-
nal TX (DVD
- LCD)Output ACCPush “POWER”
switch of DVD
player Display does not
work properly
30 (BR) GroundDVD commu-
nication sig-
nal RX (LCD
- DVD)Input ACCPush “POWER”
switch of DVD
playerRemote controler is
not work
31 (Y)
GroundBattery
power supplyOutput – – Battery voltageDisplay dose not
work properly
32 (R)Terminal
(Wire color)
ItemSignal
input/
outputCondition
Reference valueExample of symp-
tom
(+) (-)Ignition
switchOperation
SKIA8863J
SKIB0322E
SKIA5832E
Te r m i n a l
(Wire color)
ItemSignal
input/
outputCondition
Reference valueExample of
symptom
(+) (-)Ignition
switchOperation
1 (G) 3MES input
signal (com-
mon)Input ACCPlay CD or DVD
videoApprox. 0V –
2 (L) 3MES input
signal (L+)Input ACCPlay CD or DVD
videoNo sound from
head phone LH
3 Ground Shield – ON – Approx. 0V –
4 (Y) 3MES input
signal (R+)Input ACCPlay cd or DVD
videoNo sound from
head phone RH
SKIA5828E
SKIA5828E