fuse INFINITI FX35 2006 Service Manual

SC-8
STARTING SYSTEM
Revision: 2006 December 2006 FX35/FX45
STARTING SYSTEMPFP:23300
System Description NKS002UQ
Power is supplied at all times

through 40A fusible link (letter F, located in the fuse and fusible link block)

to ignition switch terminal 1,

through 15A fuse (No. 78, located in the IPDM E/R)

to CPU of IPDM E/R,

through 10A fuse (No. 71, located in the IPDM E/R)

to CPU of IPDM E/R.
When the selector lever in the P or N position, power is supplied

from TCM, and through A/T assembly terminal 9

to IPDM E/R terminal 53.
Ground is supplied

to IPDM E/R terminals 38, 50 and 60

from grounds E21, E50 and E51.
With the ignition switch in the START position, and provided that the IPDM E/R receives a starter relay ON sig-
nal from the CAN lines, the IPDM E/R is energized and power is supplied

from ignition switch terminal 5

to IPDM E/R terminal 4 and

through IPDM E/R terminal 3

to starter motor terminal 1.
The starter motor plunger closes and provides a closed circuit between the battery and starter motor. The
starter motor is grounded to the engine block. With power and ground supplied, cranking occurs and the
engine starts.

SC-12
STARTING SYSTEM
Revision: 2006 December 2006 FX35/FX45
DIAGNOSTIC PROCEDURE 1
Check “B” Terminal Circuit
1. CHECK POWER SUPPLY FOR STARTER MOTOR “B” TERMINAL
1. Remove fuel pump fuse.
2. Crank or start the engine (where possible) until the fuel pressure is released.
3. Turn ignition switch OFF.
4. Make sure that the starter motor “B” terminal E313 terminal 2 connection is clean and tight.
5. Check voltage between starter motor “B” terminal E313 terminal 2 and ground.
OK or NG
OK >> GO TO 2.
NG >> Check harness between battery and starter motor for open circuit.
2. CHECK BATTERY CABLE CONNECTION (VOLTAGE DROP TEST)
Check voltage between starter motor “B” terminal E313 terminal 2
and battery positive terminal.
OK or NG
OK >> GO TO 3.
NG >> Check harness between battery and starter motor for poor continuity.
3. CHECK STARTER MOTOR GROUND CIRCUIT (VOLTAGE DROP TEST)
1. Turn ignition switch OFF.
2. Check voltage between starter motor case and battery negative terminal.
OK or NG
OK >> “B” terminal circuit is OK. Further inspection necessary. Refer to SC-11, "
Trouble Diagnosis with Starting/Charg-
ing System Tester (Starting)" .
NG >> Check starter motor case and ground for poor continuity.
*1 For battery testing, use Battery Ser-
vice Center (J-48087). For details
and operating instructions, refer to
Technical Service Bulletin and/or
Battery Service Center User Guide. *2
SC-13, "MINIMUM SPECIFICATION
OF CRANKING VOLTAGE REFER-
ENCING COOLANT TEMPERA-
TURE"
*3SC-12, "Check “B” Terminal Circuit"
*4SC-13, "Check “S” Connector Cir-
cuit"
2 – Ground : Battery voltage
PKIB8793E
2 – Battery positive terminal
When ignition switch is in START
position : Less than 0.5 V
PKIB8794E
Starter motor case – Battery negative terminal
When ignition switch is in
START position : Less than 0.2 V
PKIB8795E

STARTING SYSTEM SC-13
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L
M A
B
SC
Revision: 2006 December 2006 FX35/FX45
DIAGNOSTIC PROCEDURE 2
Check “S” Connector Circuit
1. CHECK POWER SUPPLY FOR STARTER MOTOR “S” TERMINAL
1. Remove fuel pump fuse.
2. Crank or start the engine (where possible) until the fuel pressure is released.
3. Turn ignition switch OFF.
4. Disconnect starter motor connector.
5. Check voltage between starter motor harness connector E312 (VK45DE) or F33 (VQ35DE) terminal 1 and ground.
OK or NG
OK >> “S” connector circuit is OK. Further inspection neces- sary. Refer to SC-11, "
Trouble Diagnosis with Starting/
Charging System Tester (Starting)" .
NG >> Check the following.

40A fusible link (letter F , located in fuse and fusible link box)

Ignition switch

Starter relay (within the IPDM E/R)

Harness for open or short
MINIMUM SPECIFICATION OF CRANKING VOLTAGE REFERENCING COOLANT TEMPERA-
TURE
1 – Ground
When ignition switch is in
START position : Battery voltage
PKIB8796E
Engine coolant temperature Voltage [V]
− 30 °C to −20 °C ( −22 °F to −4°F) 8.4
− 19 °C to −10 °C ( −2°F to 14 °F) 8.9
− 9°C to 0 °C (16 °F to 32 °F) 9.3
More than 1 °C (More than 34 °F) 9.7

SC-20
CHARGING SYSTEM
Revision: 2006 December 2006 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-24
CHARGING SYSTEM
Revision: 2006 December 2006 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.
*1 SC-25, "Check “L” Terminal Circuit
(Open)"
*2SC-25, "Check “L” Terminal Circuit
(Short)"
*3SC-25, "Check “S” Terminal Circuit"
*4SC-26, "Check “B” Terminal Circuit"*5SC-28, "Alternator Pulley Inspec-
tion" (VK45DE)
SC-29, "
Alternator Pulley Inspec-
tion" (VQ35DE)
Unit Power source (Power supply terminals) Fuse No.
Alternator Battery (“S” terminal) 33
Combination meter Ignition switch ON (“L” terminal) 14

CHARGING SYSTEM SC-25
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Revision: 2006 December 2006 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 Starting/Charging system test. Refer to Technical Service Bulletin.
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-23, "Trouble Diagnosis with Starting/Charging
System Tester (Charging)" .
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
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-23, "
Trouble Diagnosis with Starting/Charging System Tester (Charging)" .
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 Starting/Charging system test. Refer to Technical Service Bulletin.
3 – Ground : Charge warning lamp should light up.
SKIB8493E

SC-26
CHARGING SYSTEM
Revision: 2006 December 2006 FX35/FX45
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-23, "Trouble Diagnosis with Starting/Charging
System Tester (Charging)" .
NG >> Harness for open between alternator and fuse.
DIAGNOSTIC PROCEDURE 4
Check “B” Terminal Circuit
1. CHECK “B” TERMINAL CONNECTION
1. Turn ignition switch OFF.
2. Check if “B” terminal is clean and tight.
OK or NG
OK >> GO TO 2.
NG >> Repair “B” terminal connection. Confirm repair by performing complete Starting/Charging system
test. Refer to Technical Service Bulletin.
2. CHECK ALTERNATOR “B” TERMINAL CIRCUIT
Check voltage between alternator “B” terminal E307 terminal 1 and
ground.
OK or NG
OK >> GO TO 3.
NG >> Check the following.

Harness for open between alternator and fusible link
(VK45DE and VQ35DE AWD)

Harness for open between alternator and battery
(VQ35DE 2WD)
3. CHECK “B” TERMINAL CONNECTION (VOLTAGE DROP TEST)
1. Start engine.
2. When engine running at idle and warm, check voltage between alternator “B” terminal E307 terminal 1 and battery positive ter-
minal.
OK or NG
OK >> Go to SC-23, "Trouble Diagnosis with Starting/Charging
System Tester (Charging)" .
NG >> Check harness between battery and alternator for poor continuity.
4 – Ground : Battery voltage
SKIB8494E
1 – Ground : Battery voltage
PKIB8809E
1 – Battery positive terminal : Less than 0.2 V
PKIB8810E

SE-16
AUTOMATIC DRIVE POSITIONER
Revision: 2006 December 2006 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-32, "CAN Communication Unit" .
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 (detention 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 December 2006 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 December 2006 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 Detention 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