fuse INFINITI FX35 2007 Service Manual

SC-24
CHARGING SYSTEM
Revision: 2006 July 2007 FX35/FX45
CHARGING SYSTEMPFP:23100
System DescriptionNKS002UV
The alternator provides DC voltage to operate the vehicle's electrical system and to keep the battery charged.
The voltage output is controlled by the IC regulator.
Power is supplied at all times

through 10A fuse (No. 33, located in the fuse and fusible link block)

to alternator terminal 4 (“S” terminal).
“B” Terminal supplies power to charge the battery and operate the vehicle's electrical system. Output voltage
is controlled by the IC regulator at terminal 4 (“S” terminal) detecting the input voltage.
The charging circuit is protected by the 120A fusible link (VK45DE and VQ35DE AWD).
The alternator is grounded to the engine block.
With the ignition switch in the ON or START position, power is supplied

through 10A fuse [No. 14, located in the fuse block (J/B)]

to combination meter terminal 7 for the charge warning lamp.
Ground is supplied

to combination meter terminal 2

through alternator terminal 3 (“L” terminal)

to alternator terminal 2 (“E” terminal) (VK45DE) or through case ground (VQ35DE)

through ground E304 (VK45DE).
With power and ground supplied, the charge warning lamp will illuminate. When the alternator is providing suf-
ficient voltage with the engine running, the ground is opened and the charge warning lamp will go off.
If the charge warning lamp illuminates with the engine running, a malfunction is indicated.
MALFUNCTION INDICATOR
The IC regulator warning function activates to illuminate charge warning lamp, if any of the following symp-
toms occur while alternator is operating:

Excessive voltage is produced.

No voltage is produced.

SC-30
CHARGING SYSTEM
Revision: 2006 July 2007 FX35/FX45
PRELIMINARY INSPECTION
1. CHECK BATTERY TERMINALS CONNECTION
Check if battery terminals are clean and tight.
OK or NG
OK >> GO TO 2.
NG >> Repair battery terminals connection.
2. CHECK FUSE AND FUSIBLE LINK
Check for blown alternator and combination meter fuses.
OK or NG
OK >> GO TO 3.
NG >> If fuse is blown, be sure eliminate cause of malfunction before installing new fuse.
3. CHECK “E” TERMINAL CONNECTION
Check if “E” terminal is clean and tight.
OK or NG
OK >> GO TO 4.
NG >> Repair “E” terminal connection.
4. CHECK ALTERNATOR DRIVE BELT TENSION
Check alternator drive belt tension. Refer to EM-174, "
Checking Drive Belts" (VK45DE) or EM-15, "Checking
Drive Belts" (VQ35DE).
OK or NG
OK >> INSPECTION END
NG >> Repair as needed.
Unit Power source (Power supply terminals) Fuse No.
Alternator Battery (“S” terminal) 33
Combination meter Ignition switch ON (“L” terminal) 14

CHARGING SYSTEM SC-31
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Revision: 2006 July 2007 FX35/FX45
DIAGNOSTIC PROCEDURE 1
Check “L” Terminal Circuit (Open)
1. CHECK “L” TERMINAL CONNECTION
1. Turn ignition switch OFF.
2. Check if “L” terminal is clean and tight.
OK or NG
OK >> GO TO 2.
NG >> Repair “L” terminal connection. Confirm repair by performing complete Battery/Starting/Charging system test.
2. CHECK “L” TERMINAL CIRCUIT (OPEN)
1. Disconnect alternator connector.
2. Apply ground to alternator harness connector E311 (VK45DE) or F26 (VQ35DE) terminal 3 with the ignition switch in the ON posi-
tion.
OK or NG
OK >> Go to SC-29, "WORK FLOW" .
NG >> Check the following.

Charge warning lamp (combination meter)

Harness for open between combination meter and
fuse

Harness for open between combination meter and alternator
3 – Ground : Charge warning lamp should light up.
SKIB8493E

SC-32
CHARGING SYSTEM
Revision: 2006 July 2007 FX35/FX45
DIAGNOSTIC PROCEDURE 2
Check “L” Terminal Circuit (Short)
1. CHECK “L” TERMINAL CIRCUIT (SHORT)
1. Turn ignition switch OFF.
2. Disconnect alternator connector.
3. Turn ignition switch ON.
Charge warning lamp should light up?
YES >> Check the following.

Harness for short between combination meter and alternator

Charge warning lamp (Combination meter)
NO >> Go to SC-29, "
WORK FLOW" .
DIAGNOSTIC PROCEDURE 3
Check “S” Terminal Circuit
1. CHECK “S” TERMINAL CONNECTION
1. Turn ignition switch OFF.
2. Check if “S” terminal is clean and tight.
OK or NG
OK >> GO TO 2.
NG >> Repair “S” terminal connection. Confirm repair by performing complete Battery/Starting/Charging
system test.
2. CHECK ALTERNATOR “S” TERMINAL CIRCUIT
1. Disconnect alternator connector.
2. Check voltage between alternator harness connector E311 (VK45DE) or F26 (VQ35DE) terminal 4 and ground.
OK or NG
OK >> Go to SC-29, "WORK FLOW" .
NG >> Harness for open between alternator and fuse. 4 – Ground : Battery voltage
SKIB8494E

SE-16
AUTOMATIC DRIVE POSITIONER
Revision: 2006 July 2007 FX35/FX45
CAN Communication System DescriptionNIS001UQ
CAN (Controller Area Network) is a serial communication line for real time application. It is an on-vehicle mul-
tiplex communication line with high data communication speed and excellent error detection ability. Many elec-
tronic control units are equipped onto a vehicle, and each control unit shares information and links with other
control units during operation (not independent). In CAN communication, control units are connected with 2
communication lines (CAN H line, CAN L line) allowing a high rate of information transmission with less wiring.
Each control unit transmits/receives data but selectively reads required data only.
CAN Communication UnitNIS001UR
Refer to LAN-49, "CAN System Specification Chart" .
1. a: 10A 38 fuse (With Intelligent Key)
b: 50A M fusible link 2. a: Fuse block (J/B) M1, M2
b: BCM M3, M4, B14
(View with the dash side LH
removed) 3. Fuse block (J/B) fuse layout
4. a: Automatic drive positioner control unit M49, M50
b: A/T device (park position switch)
M67
(View with the center console
removed) 5. Tilt motor and telescopic motor M27
Tilt sensor and telescopic sensor M28
(View with the instrument driver lower
panel removed) 6. Seat memory switch D22
7. a: Power seat switch B175 b: Sliding switch & Lifting switch
(front & rear)
c: Reclining switch
d: Lumbar support switch B158 8. a: Lumbar support motor B172
b: Reclining motor B166 9. a: Sliding motor B161
b: Lifting motor (front) B164
c: Lifting motor (rear) B162
d: Driver seat control unit B152,
B153
10. ADP steering switch M13 11. Key switch connector M23 (Without Intelligent Key) 12. Key switch and ignition knob switch
connector M22
(With Intelligent Key)
13. Front door switch (Driver side) B26 14. Door mirror (Driver side) D2 15. Door mirror (Passenger side) D32
16. Door mirror remote control switch M18 17. Unified meter and A/C amp. M55
(View with the cluster lid C removed)
PIIB8566E

AUTOMATIC DRIVE POSITIONER SE-31
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Revision: 2006 July 2007 FX35/FX45
Terminals and Reference Values for BCMNIS001UU
Terminals and Reference Values for Automatic Drive Positioner Control UnitNIS001UV
Te r -
minal Wire
Color Item
Signal
Input/Output Condition
Voltage (V)
(Approx.)
11 LG Ignition switch (ACC) Input Ignition switch
(ACC or ON position) Battery voltage
37 B/W Key switch signal Input Key switch ON (key is inserted in
ignition key cylinder) Battery voltage
Key switch OFF (key is removed
from ignition key cylinder) 0
38 W/L Ignition switch (ON) Input Ignition switch
(ON or START position) Battery voltage
39 L CAN-H Input/Output — —
40 P CAN-L Input/Output — —
42 L/R Power source (Fuse) Input — Battery voltage
49 B Ground (signal) — — 0
52 B Ground (power) — — 0
55 G Power supply (Fusible link) Input — Battery voltage
62 W Front door switch
(driver side) Output ON (Open)
→ OFF (Closed) 0 → Battery voltage
Te r -
minal Wire
Color Item
Signal
Input/Output Condition
Voltage (V)
(Approx.)
1 R Tilt switch UP signal Input Tilt switch turned to upward 0
Other than above 5
2 G/W Changeover switch RH signal Input When changeover switch in RH
position 0
Other than above 5
3 GY Mirror switch UP signal Input When mirror switch in turned to
upward position 0
Other than above 5
4 Y Mirror switch LEFT signal Input When mirror switch in turned to
leftward position 0
Other than above 5
5OR Passenger side mirror sen-
sor (vertical) signal Input When passenger side mirror
motor is UP or DOWN operation Changes between 3 (close to
perk) - 1 (close to valley)
6P/L Driver side mirror sensor
(vertical) signal InputWhen driver side mirror motor is
UP or DOWN operation Changes between 3 (close to
perk) - 1 (close to valley)
7 Y/R Tilt sensor signal Input Tilt position, top 2
Tilt position, bottom 4
10 B UART LINE (TX) Output Memory switch 1 or 2 operated
11 B R Telescopic switch
FORWARD signal Input Telescopic switch turned to for-
ward 0
Other than above 5
PIIA4813E

SE-34
AUTOMATIC DRIVE POSITIONER
Revision: 2006 July 2007 FX35/FX45
7G/B Rear lifting motor
DOWN signal Output When rear lifting motor
DOWN operation Battery voltage
Other than above 0
8 G/Y UART LINE (RX) Input Memory switch 1 or 2 switch oper-
ated
9 BR Ignition switch (START) Input Ignition switch
(START position) Battery voltage
10 G/R Sliding motor
BACKWARD signal Output When sliding motor
BACKWARD operation Battery voltage
Other than above 0
11A R/W Power source (Fuse) Input — Battery voltage
12 G/Y Reclining motor
BACKWARD signal Output When reclining motor
BACKWARD operation Battery voltage
Other than above 0
13 Y Front lifting motor UP signal Output When front lifting motor
UP operation Battery voltage
Other than above 0
14 OR CAN-H Input/Output — —
15 SB CAN-L Input/Output — —
16A B Ground (power) — — 0
17 PU Park position switch signal Input Selector lever other than P position Battery voltage
Selector lever is sifted to P position 0
18 G/L Seat sliding sensor signal Input ON (sliding motor operation)
Other than above 0 or 5
19 G/R Front lifting sensor signal Input ON (front lifting motor operation)
Other than above 0 or 5
22 R/B Power seat memory switch 1
signal Input Memory switch 1: ON 0
Memory switch 1: OFF 5
23 Y/W Power seat memory switch
indictor 1 signal Output Memory switch 1: ON 1
Memory switch 1: OFF Battery voltage
Te r -
minal Wire
Color Item Signal
Input/Output Condition Voltage (V)
(Approx.)
PIIA4813E
PIIA3277E
SIIA0691J

AUTOMATIC DRIVE POSITIONER SE-37
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Revision: 2006 July 2007 FX35/FX45
CHECK POWER SUPPLY AND GROUND
1. CHECK FUSE
Check if any of the following fuses in the BCM are blown.

Check 50A fusible link (letter M , located in the fuse and fusible link box.)

Check 15A fuse [No.22, located in the fuse block (J/B)]

Check 10A fuse [No.1, located in the fuse block (J/B)]

Check 10A fuse [No.6, located in the fuse block (J/B)]
NOTE:
Refer to SE-15, "
Component Parts and Harness Connector Location" .
OK or NG
OK >> GO TO 2.
NG >> If fuse is blown out, be sure to eliminate cause of malfunction before installing new fuse. Refer to
SE-15, "
Component Parts and Harness Connector Location" .
2. CHECK POWER SUPPLY CIRCUIT (BCM)
1. Turn ignition switch OFF.
2. Disconnect BCM connector.
3. Check voltage between BCM connector and ground.
OK or NG
OK >> GO TO 3.
NG >> Check harness for open and short between BCM and fuse or fusible link.
3. CHECK GROUND CIRCUIT (BCM)
1. Turn ignition switch OFF.
2. Check continuity between BCM connector M4 terminal 49, 52 and ground.
OK or NG
OK >> BCM circuit is OK. Check the driver seat control unit. GO TO 4.
NG >> Repair or replace the harness between BCM and ground.
Connector Terminals (Wire color)
Ignition
switch Voltage (V)
(Approx.)
(+) (–)
M3 11 (LG)
Ground ACC
Battery voltage
38 (W/L) ON
M4 42 (L/R)
OFF
55 (G)
PIIA5083E
49 (B) – Ground : Continuity should exist.
52 (B) – Ground : Continuity should exist.
PIIA5084E

SE-38
AUTOMATIC DRIVE POSITIONER
Revision: 2006 July 2007 FX35/FX45
4. CHECK FUSE

Check 10A fuse [No.9, located in fuse block (J/B)].
NOTE:
Refer to SE-15, "
Component Parts and Harness Connector Location" .
OK or NG
OK >> GO TO 5.
NG >> If fuse is blown out, be sure to eliminate cause of malfunction before installing new fuse. Refer to
SE-15, "
Component Parts and Harness Connector Location" .
5. CHECK POWER SUPPLY CIRCUIT (DRIVER SEAT CONTROL UNIT)
1. Disconnect driver seat control unit connector.
2. Check voltage between driver seat control unit and ground.
OK or NG
OK >> GO TO 6.
NG >> Repair or replace harness between driver seat control
unit and fuse block (J/B).
6. CHECK GROUND CIRCUIT (DRIVER SEAT CONTROL UNIT)
1. Turn ignition switch OFF.
2. Check continuity between the driver seat control unit connector B152, B153 terminal16A, 61E and ground.
OK or NG
OK >> GO TO 7.
NG >> Repair or replace harness between driver seat control unit and ground.
7. CHECK POWER SUPPLY CIRCUIT (AUTOMATIC DRIVE POSITIONER CONTROL UNIT)
1. Disconnect automatic drive positioner control unit connector.
2. Check voltage between automatic drive positioner control unit and ground.
OK or NG
OK >> GO TO 8.
NG >> Repair or replace harness between automatic drive positioner control unit and fuse block (J/B).
Connector Terminals (Wire color)
Ignition
switch Voltage (V)
(Approx.)
(+) (–)
B152 9 (BR)
Ground START
Battery voltage
B153 1A (R)
OFF
11 A ( R / W )
PIIA5085E
16A (B) – Ground : Continuity should exist.
61E (B/Y) – Ground : Continuity should exist.
PIIA5087E
Connector Terminals (Wire color)
Ignition
switch Voltage (V)
(Approx.)
(+) (–)
M49 28 (SB) Ground START
Battery voltage
M50 34 (L/R)
OFF
39 (W/R)
PIIA5086E

AUTOMATIC DRIVE POSITIONER SE-83
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Revision: 2006 July 2007 FX35/FX45
2. CHECK KEY SWITCH POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect key switch and ignition knob switch connector.
3. Check voltage between key switch and ignition knob switch con- nector M22 terminal 3 and ground.
OK or NG
OK >> GO TO 3.
NG >> Check harness between key switch and fuse.
3. CHECK KEY SWITCH
Check continuity between key switch and ignition knob switch con-
nector M22 terminal 3 and 4.
OK or NG
OK >> GO TO 4.
NG >> Replace key switch and ignition knob switch.
4. CHECK HARNESS CONTINUITY
1. Disconnect key switch and ignition knob switch connector and BCM connector.
2. Check continuity between key switch and ignition knob switch connector M22 terminal 4 and BCM connector M3 terminal 37.
3. Check continuity between key switch and ignition knob switch connector M22 terminal 4 and ground.
OK or NG
OK >> Key switch circuit is OK.
NG >> Repair or replace harness between key switch and igni- tion knob switch and BCM.
3 (L/R) – Ground : Battery voltage.
PIIA5093E
Con-
nector Terminal Condition Continuity
M2234 Key is inserted in ignition key cylinder. Yes
Key is removed from ignition key cylinder. No
PIIA6140E
4 (B/W) – 37 (B/W) : Continuity should exist.
4 (B/W) – Ground : Continuity should not exist.
PIIA5095E