2011 INFINITI QX56 brake

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Page 2481 of 5598

INFINITI QX56 2011 Factory Service Manual
P1805 BRAKE SWITCHEC-457
< DTC/CIRCUIT DIAGNOSIS > [VK56VD]
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YES >> INSPECTION END
NO >> Replace stop lamp switch. Refer to
BR-20, "
Removal and Installation".
Revisio

Page 2514 of 5598

INFINITI QX56 2011 Factory Service Manual
EC-490
< DTC/CIRCUIT DIAGNOSIS >[VK56VD]
ASCD BRAKE SWITCH
ASCD BRAKE SWITCH
Component Function CheckINFOID:0000000006217989
1.CHECK ASCD BRAKE SWITCH FUNCTION
WITH CONSULT-III
1. Turn ignition swit

Page 2515 of 5598

INFINITI QX56 2011 Factory Service Manual
ASCD BRAKE SWITCHEC-491
< DTC/CIRCUIT DIAGNOSIS > [VK56VD]
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4. Also check harness for short to ground and short to power.
Is the inspection result normal?
YES >> GO TO

Page 2527 of 5598

INFINITI QX56 2011 Factory Service Manual
ICC BRAKE SWITCHEC-503
< DTC/CIRCUIT DIAGNOSIS > [VK56VD]
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ICC BRAKE SWITCH
Component Function CheckINFOID:0000000006218008
1.CHECK ICC BRAKE SWITCH FUNCTION
WITH CONS

Page 2528 of 5598

INFINITI QX56 2011 Factory Service Manual
EC-504
< DTC/CIRCUIT DIAGNOSIS >[VK56VD]
ICC BRAKE SWITCH
Is the inspection result normal?
YES >> INSPECTION END
NO >> GO TO 3.
3.CHECK ICC BRAKE SWITCH POWER SUPPLY CIRCUIT-I
1. Turn ignition switch

Page 2529 of 5598

INFINITI QX56 2011 Factory Service Manual
ICC BRAKE SWITCHEC-505
< DTC/CIRCUIT DIAGNOSIS > [VK56VD]
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4. Also check harness for short to ground and short to power.
Is the inspection result normal?
YES >> GO TO 9

Page 2566 of 5598

INFINITI QX56 2011 Factory Service Manual
EM-4
< PRECAUTION >
PRECAUTIONS
If turning the steering wheel is required with the battery disconnected or discharged, follow the operation pro-
cedure below before starting the repair operation.
OPE

EM-4
< PRECAUTION >
PRECAUTIONS
If turning the steering wheel is required with the battery disconnected or discharged, follow the operation pro-
cedure below before starting the repair operation.
OPERATION PROCEDURE
1. Connect both battery cables.
NOTE:
Supply power using jumper cables if battery is discharged.
2. Turn the push-button ignition switch to ACC position. (At this time, the steering lock will be released.)
3. Disconnect both battery cables. The steering lock wi ll remain released with both battery cables discon-
nected and the steering wheel can be turned.
4. Perform the necessary repair operation.
5. When the repair work is completed, re-connect bot h battery cables. With the brake pedal released, turn
the push-button ignition switch from ACC position to ON position, then to LOCK position. (The steering
wheel will lock when the push-button igniti on switch is turned to LOCK position.)
6. Perform self-diagnosis check of all control units using CONSULT-III.
Precaution for Drain Engine Coolant and Engine OilINFOID:0000000006289509
Drain engine coolant and engine oil when engine is cooled.
Precaution for Disconnecting Fuel PipingINFOID:0000000006289510
Before starting work, check no fire or sp ark producing items are in the work area.
Release fuel pressure before disconnecting and disassembly.
After disconnecting pipes, plug openings to stop fuel leakage.
Precaution for Handling High Pressure Fuel SystemINFOID:0000000006289511
High pressure fuel system components are betw een high pressure fuel pump and fuel injector.
Always release fuel pressure and never start the engine when performing removal and installation.
When removing or installing parts without releasing fuel pressure, fuel may be splashed and, if fuel contacts
skin or eyes, it may cause inflammation.
Precaution for Removal and DisassemblyINFOID:0000000006289512
When instructed to use SST, use specified tools. Always be careful to work safely, avoid forceful or unin-
structed operations.
Exercise maximum care to avoid damage to mating or sliding surfaces.
Cover openings of engine system with tape or the equival ent, if necessary, to seal out foreign materials.
Mark and arrange disassembly parts in an organi zed way for easy troubleshooting and assembly.
When loosening nuts and bolts, as a basic rule, star t with the one furthest outside, then the one diagonally
opposite, and so on. If the order of loosening is specified, do exactly as specified. Power tools may be used
where noted in the step.
Precaution for Inspection, Repair and ReplacementINFOID:0000000006289513
Before repairing or replacing, thoroughly inspect parts. Inspect new replacement parts in the same way, and
replace if necessary.
Precaution for Assembly and InstallationINFOID:0000000006289514
Use torque wrench to tighten bolts or nuts to specification.
When tightening nuts and bolts, as a basic rule, equally tighten in several different steps starting with the
ones in center, then ones on inside and outside diagonally in this order. If the order of tightening is specified,
do exactly as specified.
Replace with new gasket, packing, oil seal or O-ring.
Thoroughly wash, clean, and air-blow each part. Carefully check engine oil or engine coolant passages for
any restriction and blockage.
Dowel pins are used for several parts alignment. When replacing and reassembling parts with dowel pins,
check that dowel pins are installed in the original position.
Revision: 2010 May2011 QX56

Page 2635 of 5598

INFINITI QX56 2011 Factory Service Manual
TIMING CHAINEM-73
< REMOVAL AND INSTALLATION >
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Check for cracks and any excessive
wear at link plates and roller
links of timing chain. Replace timing chain if necessa

TIMING CHAINEM-73
< REMOVAL AND INSTALLATION >
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Check for cracks and any excessive
wear at link plates and roller
links of timing chain. Replace timing chain if necessary.
INSPECTION AFTER ASSEMBLY
Inspection for Leakage
The following are procedures for chec king fluid leakage, lubricant leakage. Before starting engine, check oil/fluid levels including engine coolant and engine oil. If any are less than the
required quantity, fill them to the specified level. Refer to MA-10, "
Fluids and Lubricants".
Follow the procedure below to check for fuel leakage.
- Turn ignition switch to the “ON” position (with engi ne stopped). With fuel pressure applied to fuel piping,
check for fuel leakage at connection points.
- Start engine. With engine speed increased, check again for fuel leakage at connection points.
Run engine to check for unusual noise and vibration.
NOTE:
If hydraulic pressure inside chain tensioner drops after removal/installation, slack in guide may generate a
pounding noise during and just after the engine start. However, this does not indicate a malfunction. The
noise will stop after hydraulic pressure rises.
Warm up engine thoroughly to check that there is no leak age of fuel, or any oil/fluids including engine oil and
engine coolant.
Bleed air from lines and hoses of applicable lines, such as in cooling system.
After cooling down engine, again check oil/fluid levels including engine oil and engine coolant. Refill them to the specified level, if necessary.
Summary of the inspection items:
* Power steering fluid, brake fluid, etc. A: Crack
B: Wear
JPBIA0091ZZ
Items Before starting engine Engine running After engine stopped
Engine coolant Level Leakage Level
Engine oil Level Leakage Level
Transmission /
transaxle fluid AT & CVT Models Leakage Level / Leakage Leakage
MT Models Level / Leakage Leakage Level / Leakage
Other oils and fluids* Level Leakage Level
Fuel Leakage Leakage Leakage
Revision: 2010 May2011 QX56

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