exl INFINITI QX56 2010 Factory Service Manual

MA-6
< ON-VEHICLE MAINTENANCE >
GENERAL MAINTENANCE
ON-VEHICLE MAINTENANCE
GENERAL MAINTENANCE
General MaintenanceINFOID:0000000005145933
General maintenance includes those items which should be checked during the normal day-to-day operation
of the vehicle. They are essential if the vehicle is to continue operating properly. The owner can perform these
checks and inspections or have thei r INFINITI dealers perform them.
OUTSIDE THE VEHICLE
The maintenance items listed here should be performed fr om time to time, unless otherwise specified.
INSIDE THE VEHICLE
The maintenance items listed here should be checked on a regular basis, such as when performing periodic maintenance, cleaning the vehicle,
etc.
Item Reference page
Tires Check the pressure with a gauge often and always prior to long distance trips.
Adjust the pressure in all tires, including the spare, to the pressure specified.
Check carefully for damage, cuts or excessive wear. WT-47, "
Inspection"
Wheel lug nuts
When checking the tires, make sure no nuts are missing, and check for any loose
nuts. Tighten if necessary. WT-49, "Rotation"
Windshield
Clean the windshield on a regular basis. Check the windshield at least every six
months for cracks or other damage. Repair as necessary. GW-11, "Removal and
Installation"
Tire rotation
Tires should be rotated every 12,000 km (7,500 miles). WT-49, "Rotation"
Tire Pressure Monitor-
ing System (TPMS)
transmitter componentsReplace the TPMS transmitter grommet seat, valve core and cap when the tires
are replaced due to wear or age.
WT-50, "Transmitter
(Pressure Sensor)"
Wheel alignment and
balanceIf the vehicle pulls to either side while driving on a straight and level road, or if
you detect uneven or abnormal tire wear, there may be a need for wheel align-
ment. If the steering wheel or seat vibrates at normal highway speeds, wheel bal-
ancing may be needed. WT-48, "Balancing
Wheels", FSU-6, "Front
Wheel Alignment"
Windshield wiper
blades
Check for cracks or wear if they do not wipe properly.
—
Doors and engine
hood Check that all doors and the engine hood operate smoothly as well as the back
door. Also make sure that all latches lock securely. Lubricate if necessary. Make
sure that the secondary latch keeps the hood from opening when the primary
latch is released.
When driving in areas using road salt or other corrosive materials, check lubri-
cation frequently. MA-38, "
LOCKS AND
HINGES : Lubricating
Locks, Hinges and Hood
Latches"
Lamps
Make sure that the head lamps, stop lamps, tail lamps, turn signal lamps, and
other lamps are all operating properly and installed securely. Also check head
lamp aim. Clean the head lamps on a regular basis. EXL-145, "HEADLAMP :
Aiming Adjustment"
Item
Reference page
Warning lamps and
chimes Make sure that all warning lamps and chimes are operating properly.
WCS-4, "
WARNING
CHIME SYSTEM : Sys-
tem Description"
Windshield wiper and
washerCheck that the wipers and washer operate properly and that the wipers do not
streak.
—
Windshield defroster Check that the air comes out of the defroster outlets properly and in sufficient
quantity when operating the heater or air conditioner. —
Steering wheel Check that it has the specified play. Be sure to check for changes in the steering
condition, such as excessive play, hard steering or strange noises.
Free play: less than 35mm (1.38 in) ST-15, "
On-Vehicle In-
spection and Service"
Seats
Check seat position controls such as seat adjusters, seat back recliner, etc. to
make sure they operate smoothly and that all latches lock securely in every po-
sition. Check that the head restraints move up and down smoothly and that the
locks (if equipped) hold securely in all latched positions. Check that the latches
lock securely for folding-down rear seat backs. —
Revision: April 20092010 QX56

PCS-6
< FUNCTION DIAGNOSIS >[IPDM E/R]
RELAY CONTROL SYSTEM
System Description
INFOID:0000000005146497
IPDM E/R activates the internal cont rol circuit to perform the relay ON-OFF control according to the input sig-
nals from various sensors and the request signals received from control units via CAN communication.
CAUTION:
IPDM E/R integrated relays cannot be removed.
Control relay Input/outputTransmit unit Control partReference
page
Front fog lamp relay Front fog lamp request signal BCM (CAN) Front fog lamps EXL-14
• Headlamp LH high relay
• Headlamp RH high relay
• Headlamp low relay• High beam request signal LH
• High beam request signal RH
• Low beam request signal
BCM (CAN)• Headlamp high LH
• Headlamp high RH
• Headlamp low EXL-7
EXL-7
Tail lamp relay
Position light request signal BCM (CAN)•Parking lamps
• License plate lamps
•Tail lamps
• Trailer tow relay
• Illumination system EXL-17
• Front wiper relay
• Front wiper high relay
Front wiper request signal
BCM (CAN) Front wiper motor WW-4
Rear window defogger relay Rear window defogger request signal BCM (CAN) Rear window defogger WW-8
A/C relayA/C request signal •BCM (CAN)
•ECM (CAN)
A/C compressor
HAC-20
Starter relay Ignition switch START signal TCMStarter motor STR-8
Cooling fan relay Cooling fan request signal ECM (CAN) Cooling fan relay EC-36
Heated mirror relayHeated mirror request sign alBCM (CAN) Door mirrors DEF-4
ECM relayECM relay control signal ECM (CAN) ECM relay EC-21
Throttle control motor relay Throttle control moto r control signal ECM (CAN) Throttle control motor re-
layEC-28
Fuel pump relay
Fuel pump request signal ECM (CAN) Fuel pump EC-28
Ignition relayIgnition switch ON signal Ignition switch Ignition relay EC-31
Revision: April 20092010 QX56

INTELLIGENT KEY SYSTEM/ENGINE START FUNCTION SYMPTOMS
SEC-115
< SYMPTOM DIAGNOSIS > [WITH INTELLIGENT KEY SYSTEM]
C
D
E
F
G H
I
J
L
M A
B
SEC
N
O P
SYMPTOM DIAGNOSIS
INTELLIGENT KEY SYSTEM/ENGIN E START FUNCTION SYMPTOMS
Symptom TableINFOID:0000000005147148
NOTE:
• Before performing the diagnosis in the following table, check “ SEC-4, "
Work Flow"”.
• Check that vehicle is under the condition shown in “Conditions of vehicle” before starting diagnosis, and check each symptom.
• Engine cranking is enabled when the shift lever is in the "Park" position, and in the "Neutral" position only if the brake pedal is depressed.
• If the following symptoms are detec ted, check systems shown in the “Diagnosis/service procedure” column
in this order.
CONDITIONS OF VEHICLE (OPERATING CONDITIONS)
• Engine start function is ON when setting on CONSULT-III.
• Mechanical key is not inserted in key cylinder.
• One or more of Intelligent Keys with registered Intelligent Key ID is in the vehicle.
Symptom Diagnosis/service procedureReference
page
Ignition switch does not turn on with Intelligent Key.
[LCD displays "KEY DETECTED"] 1. Check steering lock solenoid.
DLK-99
2. Replace Intelligent Key unit.SEC-120
Ignition switch does not turn on with Intelligent Key.
[LCD does not display "PUSH" with arrow toward key
cylinder] 1. Check Intelligent Key unit power supply and ground circuit.
DLK-682. Check ignition knob switch.DLK-116
3. Check key switch (BCM input).DLK-115
4. Check key switch (Intelligent Key unit input).DLK-113
5. Replace Intelligent Key unit.SEC-120
Ignition switch does not turn on with Intelligent Key.
[LCD displays " NO KEY"] 1a. Check center console area antenna (rear).
DLK-60
1b. Check luggage area antenna.DLK-62
1c. Check center console area antenna (front).DLK-64
1d. Check overhead console area antenna.DLK-68
2. Replace Intelligent Key unit.SEC-120
Ignition switch does not turn on with mechanical key1. Check key switch (BCM input).
DLK-1152. Check key switch (Intelligent Key unit input).DLK-113
Engine cannot be cranked with transmission in "Park"
or in "Neutral" position with brake pedal depressed.1. Check transmission signal.
TM-45
2. Check stop lamp switch.EXL-91
Revision: April 20092010 QX56

WCS-66
< SYMPTOM DIAGNOSIS >
THE LIGHT REMINDER WARNING DOES NOT SOUND
SYMPTOM DIAGNOSIS
THE LIGHT REMINDER WARNING DOES NOT SOUND
DescriptionINFOID:0000000005146175
Light reminder warning does not sound even though headlamp is illuminated.
Diagnosis ProcedureINFOID:0000000005146176
1.CHECK COMBINATION SWITCH (LIGHTING SWITCH) OPERATION
Check that the headlamps operate normally by operat ing the combination switch (lighting switch).
Do they operate normally?
YES >> GO TO 2
NO >> Refer to EXL-4, "
Work Flow".
2.CHECK FRONT DOOR SWITCH LH SIGNAL CIRCUIT
Perform inspection of the front door s witch LH signal circuit. Refer to DLK-71, "
Diagnosis Procedure".
Is the inspection result normal?
YES >> GO TO 3
NO >> Repair harness or connector.
3.CHECK FRONT DOOR SWITCH LH
Perform a unit inspection for the front door switch LH. Refer to DLK-71, "
Diagnosis Procedure".
Is the inspection result normal?
YES >> Replace the BCM. Refer to BCS-59, "Removal and Installation".
NO >> Replace the front door switch LH.
Revision: April 20092010 QX56