2004 INFINITI FX35 Power supply

NAVIGATION SYSTEM
AV-127
C
D
E
F
G
H
I
J
L
MA
B
AV
Revision: 2004 November 2004 FX35/FX45
Terminals and Reference Value for DisplayAKS00BN0
Terminal
(Wire color)
ItemSignal
input/
outputCondition
Reference valueExample of
symptom
+–Ignition
switchOperation
1 (B) Ground Ground – ON – Approx. 0V –
2 (W/G) GroundPower supply
(Inverter) Input ON – Approx. 9VScreen is not
shown
3 (BR/W) GroundPower supply
(Signal) Input ON – Approx. 9VScreen is not
shown
6 (L/W) 7RGB signal (G:
green)Input ONSelect “Display
Diagnosis (DCU)”
of CONFIRMA-
TION/ADJUST-
MENT function.RGB screen
looks reddish.
7 – Shield ground – – – – –
8 (R) 21Horizontal syn-
chronizing (HP)
signalOutput ON –RGB screen
is not shown.
9 (B) 21RGB area (YS)
signalInput ONPress the “TRIP”
button.Rear view is
not displayed.
11 ( P U ) 2 3Display communi-
cation signal
(DCU-DSP)Input ON –Though a
screen is dis-
played, it is
impossible to
adjust bright-
ness.
13 (P) Ground(Inverter)
Ground – ON – Approx. 0V –
14 (P/L) Ground(Signal)
Ground – ON – Approx. 0V –
17 (L/R) 7RGB signal (R:
red)Input ONSelect “Display
Diagnosis (DCU)”
of CONFIRMA-
TION/ADJUST-
MENT function.RGB screen
looks bluish.
SKIA4981E
SKIA4983E
SKIA0162E
SKIA4364E
SKIA4980E

NAVIGATION SYSTEM
AV-129
C
D
E
F
G
H
I
J
L
MA
B
AV
Revision: 2004 November 2004 FX35/FX45
Terminals and Reference Value for A/C and AV SwitchAKS00BN1
Te r m i n a l
(Wire color)
ItemSignal
input/
outputCondition
Reference valueExample of
symptom
+–Igni-
tion
switchOperation
1 (W/L) GroundBattery power
supplyInput OFF – Battery voltageSystem does not
work properly.
2 (LG/R) GroundACC power
supplyInput ACC – Battery voltageSystem does not
work properly.
3 (R/L) GroundIllumination
signal Input OFFLighting switch is
ON.Approx. 12VA/C and AV
switch illumina-
tion does not
come on when
lighting switch is
ON. Turn lighting switch
OFF.Approx. 0V
4 (R/Y) GroundIllumination
control signalInput ONIllumination control
switch is operated
by lighting switch in
ON position.Chenges between approx. 0V
and approx. 12V A/C and AV
switch illumina-
tion does not
come on when
lighting switch is
ON.
5 (B) Ground Ground – ON – Approx. 0V –
6 (B/R) GroundCommunica-
tion signal (+)Input/
OutputON –System does not
work properly.
7–Shield
ground –– – – –
8 (W/R) GroundCommunica-
tion signal (–)Input/
OutputON –System does not
work properly.
SKIA0175E
SKIA0176E

NAVIGATION SYSTEM
AV-133
C
D
E
F
G
H
I
J
L
MA
B
AV
Revision: 2004 November 2004 FX35/FX45
SELF–DIAGNOSIS RESULT
Quick reference table
1. Select a malfunctioning diagnosis No. in the diagnosis result quick reference table.
2. Find estimated malfunctioning system in the diagnosis No. table and perform check by referring to AV-
11 6 , "Wiring Diagram — COMM —" .
3. Turn the ignition switch OFF and perform self-diagnosis again.
*: DCU = Display control unit
CAUTION:

When A/C and AV switch has a malfunction, you cannot start. Refer to AV- 1 7 1 , "Unable to Oper-
ate All of A/C and AV switch (Unable to start Self-Diagnosis)" .

When display has a malfunction, you cannot start. Refer to AV- 1 6 7 , "Screen is Not Shown" .
Self-Diagnosis Codes
Self-Diagnosis Mode (NAVI)AKS00BN4
OPERATION PROCEDURE
1. Start the engine.
2. Turn the audio system off.
3. While pressing the “MUTE/II ” button, turn the volume control
dial clockwise or counterclockwise for 30 clicks or more. (When
the self-diagnosis mode is started, a short beep will be heard.)

Shifting from current screen to previous screen is performed
by pressing “PREV” button.
4. The initial trouble diagnosis screen will be shown, and items
“Self-Diagnosis (DCU)”, “Self-Diagnosis (NAVI)”, “Confirmation/
Adjustment” and “CAN DIAG SUPPORT MONITOR” will
become selective.
Screen switch
Diagnosis
No.
Switch color DCU* Display Audio unit NavigationGPS
antenna
Red×1
Gray××2
××3
×××4
Diagnosis
No.Possible causeReference
page
1 Display control unit malfunctionAV-183
2 Display communication line between display control unit and display. AV-156
3Audio unit power supply and ground circuit.
Audio communication line between display control unit and audio unit.AV-154
4NAVI control unit power supply and ground circuit.
AV communication line between and display control unit and NAVI control unit.AV-153
SKIA4971E
SKIA4207E

NAVIGATION SYSTEM
AV-145
C
D
E
F
G
H
I
J
L
MA
B
AV
Revision: 2004 November 2004 FX35/FX45
Power Supply and Ground Circuit Check for NAVI Control UnitAKS00BN7
1. CHECK FUSE
Make sure that the following fuses of the NAVI 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 NAVI control unit harness connector ter-
minals 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 NAVI control unit connector.
3. Check continuity between NAVI control unit harness connector
B208 terminals 1 (B), 4 (B) and ground.
OK or NG
OK >> INSPECTION END
NG >> Repair harness or connector.
Unit Signal Fuse No.
NAVI control unitBattery power supply 32
ACC power supply 6
Terminals Ignition switch position
(+)
(–) OFF ACC ON
ConnectorTerminal
(Wire color)
B2082 (Y), 3 (Y)
GroundBattery
voltageBattery
voltageBattery
voltage
6 (LG) 0VBattery
voltageBattery
voltage
SKIA8932E
1, 4 – Ground : Continuity should exist.
PKIA2853E

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
C
D
E
F
G
H
I
J
L
MA
B
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
C
D
E
F
G
H
I
J
L
MA
B
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
C
D
E
F
G
H
I
J
L
MA
B
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