fuse INFINITI QX56 2006 Factory Service Manual

SC-14
STARTING SYSTEM
Revision: November 20092006 QX56
DIAGNOSTIC PROCEDURE 1
Check Starter Motor Circuit
1. CHECK POWER SUPPLY TO STARTER MOTOR
1. Remove the fuel pump fuse.
2. Crank or start the engine (where possible) until the fuel pressure is released.
3. Turn the ignition switch OFF.
4. Check that the starter motor connector F27 connection is clean and tight.
5. Check voltage between starter motor connector F27 terminal 2 and ground using a digital circuit tester.
OK or NG
OK >> GO TO 2.
NG >> Check harness between the battery and the starter motor for open circuit.
2. CHECK VOLTAGE DROP ON STARTER MOTOR CIRCUIT
Check voltage between starter motor connector F27 terminal 2 and
battery positive terminal using a digital circuit tester.
OK or NG
OK >> GO TO 3.
NG >> Check harness between the battery and the starter motor for poor continuity.
3. CHECK VOLTAGE DROP ON STARTER MOTOR GROUND CIRCUIT
Check voltage between starter motor case and battery negative ter-
minal using a digital circuit tester.
OK or NG
OK >> Starter motor ground circuit is OK. Further inspection is necessary. Refer to SC-13, "
WORK FLOW" .
NG >> Check harness between the starter motor case and ground for poor continuity.
Battery voltage should
exist.
WKIA2105E
Ignition switch in
START.
: Less than 0.5V
WKIA2106E
Ignition switch in
START. : Less than 0.2V
WKIA3437E

STARTING SYSTEMSC-15
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Revision: November 2009 2006 QX56
DIAGNOSTIC PROCEDURE 2
Check Magnetic Switch Circuit
1. CHECK POWER SUPPLY FOR MAGNETIC SWITCH
1. Remove the fuel pump fuse.
2. Crank or start the engine (where possible) until the fuel pressure is released.
3. Turn the ignition switch OFF.
4. Disconnect starter motor connector F28.
5. Check voltage between starter motor connector F28 terminal 1 and ground using a digital circuit tester.
OK or NG
OK >> GO TO 2.
NG >> Check the following.

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

Ignition switch

Starter relay [within the intelligent power distribution module engine room (IPDM E/R)]

Harness for open or short
2. CHECK VOLTAGE DROP ON MAGNETIC SWITCH CIRCUIT
1. Turn the ignition switch OFF.
2. Connect starter motor connector F28.
3. Check voltage between starter motor connector F28 terminal 1 and battery positive terminal using a digital circuit tester.
OK or NG
OK >> Magnetic switch circuit is OK. Further inspection is nec- essary. Refer to SC-13, "
WORK FLOW" .
NG >> Check harness between the battery and the magnetic
switch for poor continuity.
Ignition switch in
START.
: Battery voltage
WKIA2108E
Ignition switch in
START. : Less than 1V
WKIA1792E

CHARGING SYSTEMSC-17
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Revision: November 2009 2006 QX56
CHARGING SYSTEMPFP:23100
System DescriptionEKS00B7H
The generator 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:

to generator terminal 4

through 10A fuse (No. 30, located in the fuse and fusible link box).
Terminal 1 supplies power to charge the battery and operate the vehicle's electrical system. Output voltage is
controlled by the IC regulator at terminal 4 detecting the input voltage. The charging circuit is protected by the
140A fusible link (letter a , located in the fusible link box).
Ground is supplied:

to generator terminal 2

through body ground E203.
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 24 for the charge warning lamp.
Ground is supplied to terminal 13 of the combination meter through terminal 3 of the generator. With power
and ground supplied, the charge warning lamp will illuminate. When the generator is providing sufficient volt-
age 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 fault is indicated.

SC-22
CHARGING SYSTEM
Revision: November 20092006 QX56
DIAGNOSTIC PROCEDURE 1
Check Charge Warning Lamp Circuit
1. CHECK CHARGE WARNING LAMP CIRCUIT CONNECTION
1. Turn the ignition switch OFF.
2. Check to see if terminal 3 is clean and tight.
OK or NG
OK >> GO TO 2.
NG >> Repair terminal 3 connection. Confirm repair by performing complete Battery/Starting/Charging system test.
2. CHECK CHARGE WARNING LAMP CIRCUIT
1. Disconnect E205 connector from generator.
2. Apply ground to connector E205 terminal 3 with the ignition switch in the ON position.
OK or NG
OK >> GO TO SC-21, "WORK FLOW" .
NG >> Check the following.

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

Charge warning lamp

Harness for open or short between combination
meter and fuse

Harness for open or short between combination meter and generator
Charge warning lamp should
light up.
WKIA2110E

SC-24
CHARGING SYSTEM
Revision: November 20092006 QX56
DIAGNOSTIC PROCEDURE 3
Check Voltage Regulator Circuit
1. CHECK VOLTAGE REGULATOR CIRCUIT CONNECTION
1. Turn the ignition switch OFF.
2. Check to see if terminal 4 is clean and tight.
OK or NG
OK >> GO TO 2.
NG >> Repair terminal 4 connection. Confirm repair by performing complete Battery/Starting/Charging system test.
2. CHECK VOLTAGE REGULATOR CIRCUIT
Check voltage between generator connector E205 terminal 4 and
ground using a digital circuit tester.
OK or NG
OK >> GO TO 3.
NG >> Check the following.

10A fuse (No. 30, located in fuse and fusible link box)

Harness for open or short between generator and
fuse
3. CHECK VOLTAGE DROP ON VOLTAGE REGULATOR CIRCUIT
1. Start the engine.
2. Check voltage between generator connector E205 terminal 4 and battery positive terminal using a digital circuit tester.
OK or NG
OK >> Replace the generator. Refer to SC-25, "Removal and
Installation" . Confirm repair by performing complete
Battery/Starting/Charging system test.
NG >> Check harness between the battery and the generator for poor continuity.
Battery voltage should exist.
WKIA2113E
With engine running
at idle and warm.
: Less than 0.2V
WKIA2114E

AUTOMATIC DRIVE POSITIONERSE-11
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AUTOMATIC DRIVE POSITIONERPFP:28491
Component Parts And Harness Connector LocationEIS0058U
1. Fuse block (J/B)2. Fuse and relay box3. Fuse and fusible link box
4. A. Automatic drive positioner control unit M33, M34
B. Pedal adjusting motor E109,
E110 5. A. Steering column
B. Key switch and key lock solenoid
M27
C. BCM M18, M19, M20 (View with
instrument panel removed) 6. A. Door mirror remote control switch
D10
B. Seat memory switch D5
LIIA2361E

AUTOMATIC DRIVE POSITIONERSE-31
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Revision: November 2009 2006 QX56
Preliminary CheckEIS004XN
SETTING CHANGE FUNCTION
The settings of the automatic driving positioner system can be changed, using CONSULT-II and the display in
the center of the instrument panel.
×: Applicable –: Not applicable
It is possible to set sliding front seat for entry/exit of vehicle by pressing set switch.
*: Setting of sliding front seat for entry/exit of vehicle is ON at factory-shipment. But if custom settings are reset, setting turns OFF.
NOTE:
After the setting is registered, the new setting is effective, even if the battery is disconnected.
POWER SUPPLY AND GROUND CIRCUIT INSPECTION
1. CHECK BCM FUSES AND FUSIBLE LINK
Check if any of the following fuses for the BCM are blown.
NOTE:
Refer to SE-11, "
Component Parts And Harness Connector Location" .
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 PG-
65, "ELECTRICAL UNITS LOCATION" .
Setting item ContentCONSULT
–II
(WORK SUPPORT) Display unitDefault
setting Factory
setting
SEAT SLIDE
VOLUME SET The distance at exiting opera-
tion can be selected from the
following 3 modes. 40mm
—××
80mm ——
150mm ——
Sliding Front Seat and
Steering Wheel Raise
When Entry/ Exiting
Vehicle The seat sliding and steering
wheel raise turnout and return
at entry/exit can be selected:
ON (operated)
–OFF (not
operated) ON
ON: Indicator lamp ON —×
OFF OFF: Indicator lamp OFF ×—
Reset custom settings* All settings to default. —Default: Setting button
ON ——
Content
Setting change operation Indicator LEDs
The seat sliding and steering
wheel raise turnout and return
at entry/exit can be operated. Press the set switch for more than 10 seconds Blinking twice
The seat sliding and steering
wheel raise turnout and return
at entry/exit can be not oper-
ated. Blinking once
Unit
Power source Fuse No.
BCM Battery power supply
f (50A)
ON or START power supply 59 (10A)
ACC or ON power supply 4 (10A)

SE-32
AUTOMATIC DRIVE POSITIONER
Revision: November 20092006 QX56
2. CHECK BCM POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect BCM.
3. Check voltage between BCM connector and ground.
OK or NG
OK >> GO TO 3.
NG >> Repair or replace harness.
3. CHECK BCM GROUND CIRCUIT
Check continuity between BCM connector M20 terminal 67 and
ground.
OK or NG
OK >> BCM circuit is OK. Check the driver seat control unit. GO TO 4.
NG >> Repair or replace harness.
4. CHECK DRIVER SEAT CONTROL UNIT FUSES AND FUSIBLE LINK
Make sure any of the following fuses in the driver seat control unit and automatic drive positioner control unit
are not blown.
NOTE:
Refer to SE-11, "
Component Parts And Harness Connector Location" .
OK or NG
OK >> GO TO 5.
NG >> If fuse is blown, be sure to eliminate cause of malfunction before installing new fuse. Refer to PG-
65, "ELECTRICAL UNITS LOCATION" .
Connector Te r m i n a l s
Power
source Condition Voltage (V)
(Approx.)
(+) (-)
M20 70 Ground Battery
power
supply Ignition
switch
OFF Battery voltage
M18 38 Ground
Ignition
power
supply Ignition
switchON or
START Battery voltage
11 Ground ACC or
ON
power
supply Ignition
switch
ACC or
ON Battery voltage
LIIA0995E
67 - Ground
: Continuity should exist.
LIIA0915E
Unit Power source Fuse No.
Driver seat control unit START power supply2 (10A)
Driver seat control unit and automatic
drive positionercontrol unit Battery power supply
22 (15A)
Battery power supply f (50A)

SE-94
FRONT SEAT
Revision: November 20092006 QX56
REMOVAL
CAUTION:

When removing or installing the seat trim, handle it carefully to keep dirt out and avoid damage.

Before removing the front seat, turn the ignition switch off, disconnect both battery cables and
wait at least 3 minutes.

When checking the power seat circuit for continuity using a circuit tester, do not confuse its con-
nector with the side air bag module connector. Such an error may cause the air bag to deploy.

Do not drop, tilt, or bump the side air bag module while installing the seat. Always handle it with
care.

After front side air bag module inflates, front seatback assembly must be replaced.

Front passenger seat is equipped with an Occupant Classification System sensor and control
module. Do not disassemble front passenger seat cushion assembly or remove the trim as this
will affect the Occupant Classification System calibration.

Always replace passenger seat cushion as an assembly.
1. Slide the seat until the four body mounting bolts are visible and a tool can be inserted. NOTE:

If disassembling the seat after removal, set the front/rear cushion lifters to the top position.
2. Disconnect both battery cables and wait at least 3 minutes.
3. Disconnect the side air bag module harness connector.
4. Remove the four body mounting bolts.
5. Disconnect the power seat harness connectors and remove the seat from the vehicle. NOTE:
When removing and installing the seat, use shop cloths to protect the vehicle from damage.
INSTALLATION
Installation is in the reverse order of removal.
Disassembly and AssemblyEIS004YT
SEATBACK TRIM AND PAD
WARNING:
Removal of front side air bag module should only be done to allow deployment of front side air bag
module prior to disposal of seatback assembly.
NOTE:
Only complete seatback assemblies can be replaced on vehicles equipped with side air bags.
Be sure to set the front/rear cushion lifter to the top position.
Driver Seat
1. Remove the headrest.
7. Outboard reclining arm outer cover 8. Outboard reclining arm inner cover 9. Inboard reclining arm inner cove
10. Latch cover 11. LH outer leg cover 12. Outboard reclining arm inner cover
13. Seat cushion inner cover 14. Passenger seat wiring harness 15. Inner front leg cover
16. Power seat frame assembly 17. NVH assembly 18. Seat cushion front finisher
19. Outer pedestal finisher 20. Seat cushion outer finisher 21. Seat cushion assembly
22. Power seat switch escutcheon 23. Slide switch knob 24. Recliner switch knob
25. Seatback assembly 26. Headrest holder 27. Seat slide/ recline switch
28. Power lumbar switch

SRS-8
TROUBLE DIAGNOSIS
Revision: November 20092006 QX56
TROUBLE DIAGNOSISPFP:00004
Trouble Diagnosis IntroductionEHS0016M
CAUTION:

Do not use electrical test equipment on any circuit related to the SRS unless instructed to do so in
this Service Manual. SRS wiring harnesses can be identified by yellow and/or orange harness con-
nectors.

Do not attempt to repair, splice or modify SRS wiring harnesses. If a harness is damaged, replace
it with a new one.

Keep ground connections clean.
DIAGNOSIS FUNCTION
The SRS self-diagnosis results can be read by using “AIR BAG” warning lamp and/or CONSULT-II.
The User mode is exclusively prepared for the customer (driver). This mode warns the driver of a system mal-
function through the operation of the “AIR BAG” warning lamp.
The Diagnosis mode allows the technician to locate and inspect the malfunctioning part.
The mode applications for the “AIR BAG” warning lamp and CONSULT-II are as follows:
HOW TO PERFORM TROUBLE DIAGNOSES FOR QUICK AND ACCURATE REPAIR
A good understanding of the malfunction conditions can make troubleshooting faster and more accurate.
In general, each customer feels differently about a malfunction. It is important to fully understand the symp-
toms or conditions for a customer complaint.
Information From Customer
WHAT - Vehicle model
WHEN - Date, Frequencies
WHERE - Road conditions
HOW - Operating conditions, Symptoms
Preliminary Check
Check that the following parts are in good order.

Battery (Refer to SC-4, "How to Handle Battery" .)

Fuse (Refer to SRS-12, "Wiring Diagram— SRS —" .)

System component-to-harness connections
User mode Diagnosis mode Display type
“ AIR BAG ” warning lamp XXON-OFF operation
CONSULT-II —XMonitoring