2011 INFINITI QX56 oil change

SERVICE DATA AND SPECIFICATIONS (SDS)
MA-35
< SERVICE DATA AND SPECIFICATIONS (SDS)
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SERVICE DATA AND SPECIFICATIONS (SDS)
SERVICE DATA AND SPECIFICATIONS (SDS)
DRIVE BELTS
DRIVE BELTS : Drive BeltsINFOID:0000000006394853
DRIVE BELT
ENGINE COOLANT
ENGINE COOLANT : Periodical Maintenance SpecificationINFOID:0000000006394856
ENGINE COOLANT CAPACITY (APPROXIMATELY)
Unit: (US qt, Imp qt)
ENGINE OIL
ENGINE OIL : Periodical Maintenance SpecificationINFOID:0000000006394855
ENGINE OIL CAPACITY (APPROXIMATE)
Unit: (US qt, Imp qt)
SPARK PLUG
SPARK PLUG : Spark PlugINFOID:0000000006394854
SPARK PLUG
Unit: mm (in)
ROAD WHEEL
ROAD WHEEL : Road WheelINFOID:0000000006349771
ALUMINUM WHEEL
Tension of drive belts Belt tension is not necessary, as it is automatically adjusted by drive belt auto-tensioner.
Engine coolant capacity [With reservoir tank (“MAX” level)] 14.9 (15-6/8, 13-1/8)
Reservoir tank engine coolant capacity (At “MAX” level) 1.0 (1, 7/8)
Drain and refill
With oil filter change 6.5 (6-7/8, 5-3/4)
Without oil filter change 6.2 (6-4/8, 5-1/2)
Dry engine (engine overhaul) 7.6 (8, 6-3/4)
Make NGK
Standard type DILKAR7B11
Gap Standard 1.1 (0.043)
Limit 1.25 (0.049)
Item Limit
Radial runout Lateral deflection
Less than 0.3 mm (0.012 in)
Vertical deflection
Allowable unbalance Dynamic (At flange) Less than 7 g (0.25 oz) (one side)
Static (At flange) Less than 14 g (0.49 oz)
Revision: 2010 May2011 QX56

MWI-12
< SYSTEM DESCRIPTION >
SYSTEM
METER SYSTEM : Fail-Safe
INFOID:0000000006221695
FA I L - S A F E
The combination meter activates the fail-safe contro l if CAN communication with each unit is malfunctioning.
A. With ASCD models B. With ICC models C. For U.S.A.
D. For Canada
JSNIA3234ZZ
Function Specifications
Speedometer
Reset to zero by suspending communication.
Tachometer
Engine coolant temperature gauge
Engine oil pressure gauge
Illumination control When suspending communication, changes to nighttime mode.
Information display Odo/trip meter An indicated value is maintained at communications blackout.
Shift position indicator The display turns OFF by suspending communication.
Door open warning The display turns OFF by suspending communication.
Buzzer The buzzer turns OFF by suspending communication.
Revision: 2010 May2011 QX56

MWI
SYSTEMMWI-15
< SYSTEM DESCRIPTION >
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REFUEL CONTROL
The combination meter accelerates the fuel gauge if the all conditions listed below are met, or the ignition
switch is ON from OFF.
 Ignition switch is ON position.
 The vehicle is not moving.
 The fuel level change by 15 (4 US gal, 3-1/4 Imp gal) or more.
ENGINE OIL PRESSURE GAUGE
ENGINE OIL PRESSURE GAUGE : System DiagramINFOID:0000000006221704
ENGINE OIL PRESSURE GAUGE : System DescriptionINFOID:0000000006221705
 IPDM E/R reads the ON/OFF signals from the oil pressure switch and transmits the oil pressure switch sig-
nal to the combination meter via BCM with the CAN communication.
 The combination meter indicates engine oil pressure (Normal/Low) on the engine oil pressure gauge, based
on an oil pressure switch signal received via CAN communication.
VOLTMETER
VOLTMETER : System DiagramINFOID:0000000006221706
VOLTMETER : System DescriptionINFOID:0000000006221707
The combination meter reads the voltage of an ignition signal and indicates the voltage on the voltmeter when
the ignition switch is in ON or START position.
OIL PRESSURE WARNING LAMP
OIL PRESSURE WARNING LAMP : System DiagramINFOID:0000000006221708
JSNIA2998GB
JSNIA2996GB
JSNIA2464GB
Revision: 2010 May2011 QX56

MWI-42
< ECU DIAGNOSIS INFORMATION >
COMBINATION METER
Fail-Safe
INFOID:0000000006221722
FA I L - S A F E
The combination meter activates the fail-safe contro l if CAN communication with each unit is malfunctioning.
37
(R/Y) Ground Non-manual mode signal Input Ignition
switch
ONSelector manual mode po-
sition
12 V
Other than the above 0 V
38
(L/W) Ground Manual mode shift down
signal InputIgnition
switch
ON Selector lever DOWN oper-
ation
0 V
Other than the above 12 V
39
(Y/B) Ground Manual mode shift up sig-
nal InputIgnition
switch
ON Selector lever UP operation 0 V
Other than the above 12 V
40
(G/W) Ground Manual mode signal Input Ignition
switch
ONSelector manual mode po-
sition
0 V
Other than the above 12 V
Te r m i n a l N o .
(Wire color) Description
ConditionVa l u e
(Approx.)
+ – Signal name Input/
Output
Function Specifications
Speedometer
Reset to zero by suspending communication.
Tachometer
Engine coolant temperature gauge
Engine oil pressure gauge
Illumination control When suspending communication, changes to nighttime mode.
Information display Odo/trip meter An indicated value is maintained at communications blackout.
Shift position indicator The display turns OFF by suspending communication.
Door open warning The display turns OFF by suspending communication.
Buzzer The buzzer turns OFF by suspending communication.
Revision: 2010 May2011 QX56

PCS
SYSTEMPCS-7
< SYSTEM DESCRIPTION > [IPDM E/R]
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IGNITION RELAY MALFUNCTION DETECTION FUNCTION
 IPDM E/R monitors the voltage at the contact circuit and
excitation coil circuit of the ignition relay inside it.
 IPDM E/R judges the ignition relay error if the volt age differs between the contact circuit and the excitation
coil circuit.
 If the ignition relay cannot turn OFF due to contact seizure, it activates the tail lamp relay for 10 minutes to alert the user to the ignition relay malfunc tion when the ignition switch is turned OFF.
FRONT WIPER PROTECTION FUNCTION
IPDM E/R detects front wiper stop position by a front wiper stop position signal.
When a front wiper stop position signal is in the conditi ons listed below, IPDM E/R stops power supply to wiper
after repeating a front wiper 10 seconds activation and 20 seconds stop.
NOTE:
This operation status can be confirmed on the IPDM E/ R “Data Monitor” that displays “BLOCK” for the item
“WIP PROT” while the wiper is stopped.
STARTER MOTOR PROTECTION FUNCTION
IPDM E/R turns OFF the starter control relay to protect the starter motor when the starter control relay remains
active for 90 seconds.
POWER CONTROL SYSTEM
Control part Fail-safe operation
Headlamp  Turns ON the headlamp low relay when the ignition switch is turned ON
 Turns OFF the headlamp low relay when the ignition switch is turned OFF
 Headlamp high relay OFF
Parking lamp
 License plate lamp
 Illumination
 Tail lamp  Turns ON the tail lamp relay when the ignition switch is turned ON
 Turns OFF the tail lamp relay when the ignition switch is turned OFF
Front wiper motor  The status just before activation of fail-safe control is maintained until the ignition switch is
turned OFF while the front wiper is operating at LO or HI speed.
 The wiper is operated at LO speed until the ignition switch is turned OFF if the fail-safe con- trol is activated while the front wiper is set in the INT mode and the front wiper motor is op-
erating.
 Return automatically wiper to stop position when ignition switch is turned ON if fail-safe con- trol is activated while front wiper motor is operated and wiper stops in the other position than
stop position.
Front fog lamp Front fog lamp relay OFF
Horn Horn OFF
Ignition relay The status just before activation of fail-safe is maintained.
Starter motor Starter control relay OFF
Steering lock unit Steering lock relay OFF
Voltage judgment IPDM E/R judgment Operation
Ignition relay contact side Ignition relay excitation coil
side
ON ON Ignition relay ON normal —
OFF OFF Ignition relay OFF normal —
ON OFF Ignition relay ON stuck  Detects DTC “B2098: IGN RELAY ON”
 Turns ON the tail lamp relay for 10 min-
utes
OFF ON Ignition relay OFF stuck Detects DTC “B2099: IGN RELAY OFF”
Ignition switch Front wiper switch Front wiper stop position signal
ON OFF
The front wiper stop position signal (stop position) cannot be input for
10 seconds.
ON The front wiper stop position signal does not change for 10 seconds.
Revision: 2010 May2011 QX56

PCS-22
< ECU DIAGNOSIS INFORMATION >[IPDM E/R]
IPDM E/R
IGNITION RELAY MALFUNCTION DETECTION FUNCTION
 IPDM E/R monitors the voltage at the contact circuit and
excitation coil circuit of the ignition relay inside it.
 IPDM E/R judges the ignition relay error if the volt age differs between the contact circuit and the excitation
coil circuit.
 If the ignition relay cannot turn OFF due to contact seiz ure, it activates the tail lamp relay for 10 minutes to
alert the user to the ignition relay malfunction when the ignition switch is turned OFF.
FRONT WIPER PROTECTION FUNCTION
IPDM E/R detects front wiper stop positi on by a front wiper stop position signal.
When a front wiper stop position signal is in the conditi ons listed below, IPDM E/R stops power supply to wiper
after repeating a front wiper 10 seconds activation and 20 seconds stop.
NOTE:
This operation status can be confirmed on the IPDM E/ R “Data Monitor” that displays “BLOCK” for the item
“WIP PROT” while the wiper is stopped.
STARTER MOTOR PROTECTION FUNCTION
IPDM E/R turns OFF the starter control relay to protect the starter motor when the starter control relay remains
active for 90 seconds.
DTC IndexINFOID:0000000006220174
NOTE:
 The details of time display are as follows.
- CRNT: A malfunction is detected now.
- PAST: A malfunction was detected in the past.
 IGN counter is displayed on FFD (Freeze Frame data).
- The number is 0 when is detected now.
- The number increases like 1 → 2 ··· 38 → 39 after returning to the normal condition whenever IGN OFF →
ON.
- The number is fixed to 39 until the self-diagnosis results are erased if it is over 39.
× : Applicable
Ignition relay The status just before activation of fail-safe is maintained.
Starter motor Starter control relay OFF
Steering lock unit Steering lock relay OFF Control part Fail-safe operation
Voltage judgment
IPDM E/R judgment Operation
Ignition relay contact side Ignition relay excitation coil
side
ON ON Ignition re lay ON normal —
OFF OFF Ignition relay OFF normal —
ON OFF Ignition relay ON stuck  Detects DTC “B2098: IGN RELAY ON”
 Turns ON the tail lamp relay for 10 min-
utes
OFF ON Ignition relay OFF stuck Detects DTC “B2099: IGN RELAY OFF”
Ignition switch Front wiper switch Front wiper stop position signal
ON OFF
The front wiper stop position signal (stop position) cannot be input for
10 seconds.
ON The front wiper stop position signal does not change for 10 seconds.
CONSULT display Fail-safe Refer to
No DTC is detected.
further testing
may be required. ——
U1000: CAN COMM CIRCUIT ×PCS-28
B2098: IGN RELAY ON ×PCS-29
Revision: 2010 May2011 QX56

SCS-10
< SYSTEM DESCRIPTION >[HBMC]
STRUCTURE AND OPERATION
REAR SIDE
Oil enters from oil inlet outlet hole (A) and flows into upper
chamber (1). Oil enters from oil inlet outlet hole (B)
and flows into lower chamber (3) via outside oil path of cylinder inside. With the pressure difference between
oil flowed into the upper chamber and lower chamber, the piston (2) moves up and down and conveys a force
generated through this motion to the tires.
PPMUINFOID:0000000006256003
 PPMU stands for Passive Pressure Maintenance Unit.
 System pressure increases according to increase of oil volume due to oil temperature increase. Sudden rise in system pressure can be controlled by feeding the increased oil into the PPMU.
 Oil flows into oil chamber via PPMU pipe A and PPM U pipe B by influence of pressure change, pushes gas
spring of nitrogen gas, and pools.
1. Upper chamber 2. Piston 3. Lower chamber
A. Oil inlet outlet hole B. Oil inlet outlet hole
: Vehicle upper
JSEIA0173ZZ
1. Upper chamber 2. Piston 3. Lower chamber
A. Oil inlet outlet hole B. Oil inlet outlet hole
:Vehicle upper
JSEIA0245ZZ
Revision: 2010 May2011 QX56

SCS-22
< BASIC INSPECTION >[HBMC]
CHECK FOR MALFUNCTION
CHECK FOR MALFUNCTION
Work ProcedureINFOID:0000000006256013
CAUTION:
 Clean surrounding areas of
oil injection jack using steam before starting operation, since there may
be mud on it.
 Clean oil pressure gauge (special service tool: KV40108000) jack with steam before use.
1. Remove protector of PPMU.
2. Remove cap of oil injection jack.
3. Install an oil pressure gauge (SST: KV40108000) (A) to oil injec- tion jack.
CAUTION:
 Jack must be securely inserted until a click sound can beheard.
 Pressure reducing valve (B) of the oil pressure gauge
must be closed.
4. Loosen needle valves A, C, and E of PPMU by approximately 2 rotations.
CAUTION:
Never loosen the needle valve more than required.
5. Lift up the vehicle. CAUTION:
Check that tires never contact the ground.
6. Tighten needle valves A and C of PPMU.
7. Loosen lock nuts of needle valves B and D of PPMU and then tighten needle valves B and D.
8. Write down a value of the oil pressure gauge.
9. Lift down the vehicle. CAUTION:
Check that the lift is fully lowered.
10. Read a value of oil pressure gauge.
11. Compare difference of reading with pressure reading in step 8.
12. Tighten needle valves A, C, and E of PPMU to the specified torque.
13. Loosen needle valves B and D of PPMU by approximatel y 2 rotations and then tighten lock nut to the
specified torque.
CAUTION:
Never loosen the needle valve more than required.
JSEIA0186ZZ
Pressure change
Pressure increases : PPMU malfunction
Pressure does not change : Shock absorber malfunction
Tightening torque : 8.3 N· m (0.85 kg-m, 73 in-lb)
Tightening torque : 20 N·m (2.0 kg-m, 15 ft-lb)
JSEIA0187ZZ
Revision: 2010 May2011 QX56