2010 INFINITI QX56 brake

DLN-194
< SYMPTOM DIAGNOSIS >[PROPELLER SHAFT: 2S1410]
NOISE, VIBRATION, AND HARSHNESS
(NVH) TROUBLESHOOTING
SYMPTOM DIAGNOSIS
NOISE, VIBRATION, AND HARSHNESS (NVH) TROUBLESHOOTING
NVH Troubleshooting ChartINFOID:0000000005148906
Use the chart below to help you find the cause of the sy mptom. If necessary, repair or replace these parts.
×: ApplicableReference page
DLN-195, "
On-Vehicle Service
"
DLN-195, "
On-Vehicle Service
"
DLN-195, "
On-Vehicle Service
"
DLN-242, "
NVH Troubleshooting Chart
"
RAX-5, "
NVH Troubleshooting Chart
"
RSU-5, "
NVH Troubleshooting Chart
"
WT-43, "
NVH Troubleshooting Chart
"
WT-43, "
NVH Troubleshooting Chart
"
RAX-5, "
NVH Troubleshooting Chart
"
BR-6, "
NVH Troubleshooting Chart
"
ST-12, "
NVH Troubleshooting Chart
"
Possible cause and suspected parts
Uneven rotation torque
Rotation imbalance
Excessive run out
Differential
Axle
Suspension
Tires
Road wheel
Drive shaft
Brakes
Steering
Symptom Noise
×××××××××××
Shake ×××××××
Vibration ××××××××
Revision: April 20092010 QX56

PROPELLER SHAFTDLN-197
< REMOVAL AND INSTALLATION > [PROPELLER SHAFT: 2S1410]
C
EF
G H
I
J
K L
M A
B
DLN
N
O P
4WD
REMOVAL
1. Move the A/T select lever to the N position and release the parking brake.
2. Put matching marks on the rear propeller shaft flange yoke and the rear final drive companion flange as shown.
CAUTION:
For matching marks, use paint. Never damage the rear pro-
peller shaft flange yoke or the companion flange.
3. Remove the bolts, then remove the propeller shaft from the rear final drive and A/T or transfer.
INSPECTION
• Inspect the propeller shaft runout. If runout exceeds the limit, replace the propeller shaft assembly.
AWDIA0699GB
1. Propeller shaft tube 2. Snap ring3. Journal bearing
4. Sleeve yoke 5. Journal6. Flange yoke
Front
WDIA0049E
Limit
Propeller shaft run out : Refer to DLN-270, "
In-
spection and Adjustment"
LDIA0121E
Revision: April 20092010 QX56

DLN-208
< SYMPTOM DIAGNOSIS >[FRONT FINAL DRIVE: M205]
NOISE, VIBRATION AND HARSHNESS
(NVH) TROUBLESHOOTING
SYMPTOM DIAGNOSIS
NOISE, VIBRATION AND HARSHNESS (NVH) TROUBLESHOOTING
NVH Troubleshooting ChartINFOID:0000000005148915
Use the chart below to help you find the cause of the sy mptom. If necessary, repair or replace these parts.
×: ApplicableReference page
DLN-217, "
Disassembly and Assembly
"
DLN-217, "
Disassembly and Assembly
"
DLN-217, "
Disassembly and Assembly
"
DLN-234, "
Inspection and Adjustment
"
DLN-217, "
Disassembly and Assembly
"
DLN-209, "
Checking Front Differential Gear Oil
"
DLN-184, "
NVH Troubleshooting Chart
"
FA X - 5 , "
NVH Troubleshooting Chart
"
FSU-5, "
NVH Troubleshooting Chart
"
WT-43, "
NVH Troubleshooting Chart
"
WT-43, "
NVH Troubleshooting Chart
"
FA X - 5 , "
NVH Troubleshooting Chart
"
BR-6, "
NVH Troubleshooting Chart
"
ST-12, "
NVH Troubleshooting Chart
"
Possible cause and SUSPECTED PARTS
Gear tooth rough
Gear contact improper
Tooth surfaces worn
Incorrect backlash
Companion flange excessive runout
Gear oil improper
PROPELLER SHAFT
FRONT AXLE
FRONT SUSPENSION
TIRES
ROAD WHEEL
DRIVE SHAFT
BRAKES
STEERING
Symptom
Noise××××××××××××××
Revision: April 20092010 QX56

DLN-242
< SYMPTOM DIAGNOSIS >[REAR FINAL DRIVE: R230]
NOISE, VIBRATION AND HARSHNESS
(NVH) TROUBLESHOOTING
SYMPTOM DIAGNOSIS
NOISE, VIBRATION AND HARSHNESS (NVH) TROUBLESHOOTING
NVH Troubleshooting ChartINFOID:0000000005148928
Use the chart below to help you find the cause of the sy mptom. If necessary, repair or replace these parts.
×: ApplicableReference page
DLN-253, "
Disassembly and Assembly
"
DLN-253, "
Disassembly and Assembly
"
DLN-253, "
Disassembly and Assembly
"
DLN-270, "
Inspection and Adjustment
"
DLN-270, "
Inspection and Adjustment
"
MA-13, "
Fluids and Lubricants
"
DLN-194, "
NVH Troubleshooting Chart
"
RAX-5, "
NVH Troubleshooting Chart
"
RSU-5, "
NVH Troubleshooting Chart
"
WT-43, "
NVH Troubleshooting Chart
"
WT-43, "
NVH Troubleshooting Chart
"
RAX-5, "
NVH Troubleshooting Chart
"
BR-6, "
NVH Troubleshooting Chart
"
ST-12, "
NVH Troubleshooting Chart
"
Possible cause and SUSPECTED PARTS
Gear tooth rough
Gear contact improper
Tooth surfaces worn
Backlash incorrect
Companion flange excessive runout
Gear oil improper
PROPELLER SHAFT
REAR AXLE
REAR SUSPENSION
TIRES
ROAD WHEEL
DRIVE SHAFT
BRAKES
STEERING
Symptom
Noise××××××× ××××××
Revision: April 20092010 QX56

DLN-252
< REMOVAL AND INSTALLATION >[REAR FINAL DRIVE: R230]
REAR FINAL DRIVE
REAR FINAL DRIVE BREATHER
• Fill the rear final drive assembl
y with differential gear oil after installation. Refer to DLN-244.
ALDIA0210GB
1. Rear final drive breather hose connector 2. Plastic clip 3. Rear final drive breather tube
4. Rear final drive assembly 5. Rear suspension member 6. Rear final drive breather hose
7. Parking brake cable 8. Exhaust pipe9. Frame (LH)
10. Rear final drive breather hose frame connector A. Close-up view
Front
Revision: April 20092010 QX56

EC-5
C
DE
F
G H
I
J
K L
M
EC A
N
O P
P1140, P1145 IVT CONTROL POSITION
SENSOR ......................................................... ..
295
Component Description ....................................... ..295
On Board Diagnosis Logic ....................................295
DTC Confirmation Procedure ................................295
Diagnosis Procedure .............................................295
Component Inspection ..........................................298
P1148, P1168 CLOSED LOOP CONTROL .....299
On Board Diagnosis Logic .................................. ..299
P1211 TCS CONTROL UNIT ...........................300
Description .......................................................... ..300
On Board Diagnosis Logic ....................................300
DTC Confirmation Procedure ................................300
Diagnosis Procedure .............................................300
P1212 TCS COMMUNICATION LINE ..............301
Description .......................................................... ..301
On Board Diagnosis Logic ....................................301
DTC Confirmation Procedure ................................301
Diagnosis Procedure .............................................301
P1217 ENGINE OVER TEMPERATURE .........302
On Board Diagnosis Logic .................................. ..302
Overall Function Check .........................................302
Diagnosis Procedure .............................................303
Main 13 Causes of Overheating ............................304
P1225 TP SENSOR ..........................................306
Component Description ....................................... ..306
On Board Diagnosis Logic ....................................306
DTC Confirmation Procedure ................................306
Diagnosis Procedure .............................................306
P1226 TP SENSOR ..........................................308
Component Description ....................................... ..308
On Board Diagnosis Logic ....................................308
DTC Confirmation Procedure ................................308
Diagnosis Procedure .............................................308
P1421 COLD START CONTROL .....................310
Description .......................................................... ..310
On Board Diagnosis Logic ....................................310
DTC Confirmation Procedure ................................310
Diagnosis Procedure .............................................310
P1550 BATTERY CURRENT SENSOR ...........312
Component Description ....................................... ..312
On Board Diagnosis Logic ....................................312
DTC Confirmation Procedure ................................312
Diagnosis Procedure .............................................312
Component Inspection ..........................................314
P1551, P1552 BATTERY CURRENT SEN-
SOR ..................................................................
316
Component Description ....................................... ..316
On Board Diagnosis Logic ....................................316
DTC Confirmation Procedure ................................316
Diagnosis Procedure .............................................316
Component Inspection ..........................................318
P1553 BATTERY CURRENT SENSOR ..........320
Component Description ....................................... ..320
On Board Diagnosis Logic .....................................320
DTC Confirmation Procedure ................................320
Diagnosis Procedure .............................................320
Component Inspection ...........................................322
P1554 BATTERY CURRENT SENSOR ..........324
Component Description .........................................324
On Board Diagnosis Logic .....................................324
Overall Function Check .........................................324
Diagnosis Procedure .............................................325
Component Inspection ...........................................326
P1564 ICC STEERING SWITCH .....................328
Component Description .........................................328
On Board Diagnosis Logic .....................................328
DTC Confirmation Procedure ................................328
Diagnosis Procedure .............................................328
Component Inspection ...........................................330
P1564 ASCD STEERING SWITCH .................332
Component Description .........................................332
On Board Diagnosis Logic .....................................332
DTC Confirmation Procedure ................................332
Diagnosis Procedure .............................................332
Component Inspection ...........................................334
P1568 ICC FUNCTION ....................................336
On Board Diagnosis Logic .....................................336
DTC Confirmation Procedure ................................336
Diagnosis Procedure .............................................336
P1572 ICC BRAKE SWITCH ..........................337
Component Description .........................................337
On Board Diagnosis Logic .....................................337
DTC Confirmation Procedure ................................337
Diagnosis Procedure .............................................338
Component Inspection ...........................................343
P1572 ASCD BRAKE SWITCH ......................344
Component Description .........................................344
On Board Diagnosis Logic .....................................344
DTC Confirmation Procedure ................................344
Diagnosis Procedure .............................................345
Component Inspection ...........................................348
P1574 ICC VEHICLE SPEED SENSOR .........349
Component Description .........................................349
On Board Diagnosis Logic .....................................349
DTC Confirmation Procedure ................................349
Diagnosis Procedure .............................................349
P1574 ASCD VEHICLE SPEED SENSOR .....351
Component Description .........................................351
On Board Diagnosis Logic .....................................351
DTC Confirmation Procedure ................................351
Diagnosis Procedure .............................................351
P1805 BRAKE SWITCH .................................353
Description .............................................................353
Revision: April 20092010 QX56

EC-6
On Board Diagnosis Logic .....................................353
DTC Confirmation Procedure ................................353
Diagnosis Procedure .............................................353
Component Inspection ...........................................355
P2100, P2103 THROTTLE CONTROL MO-
TOR RELAY .....................................................
356
Component Description ....................................... ..356
On Board Diagnosis Logic .....................................356
DTC Confirmation Procedure ................................356
Diagnosis Procedure .............................................356
P2101 ELECTRIC THROTTLE CONTROL
FUNCTION .......................................................
359
Description ........................................................... ..359
On Board Diagnosis Logic .....................................359
DTC Confirmation Procedure ................................359
Diagnosis Procedure .............................................359
Component Inspection ...........................................362
P2118 THROTTLE CONTROL MOTOR ..........363
Component Description ....................................... ..363
On Board Diagnosis Logic .....................................363
DTC Confirmation Procedure ................................363
Diagnosis Procedure .............................................363
Component Inspection ...........................................364
P2119 ELECTRIC THROTTLE CONTROL
ACTUATOR .....................................................
365
Component Description ....................................... ..365
On Board Diagnosis Logic .....................................365
DTC Confirmation Procedure ................................365
Diagnosis Procedure .............................................366
P2122, P2123 APP SENSOR ..........................367
Component Description ....................................... ..367
On Board Diagnosis Logic .....................................367
DTC Confirmation Procedure ................................367
Diagnosis Procedure .............................................367
Component Inspection ...........................................369
P2127, P2128 APP SENSOR ..........................370
Component Description ....................................... ..370
On Board Diagnosis Logic .....................................370
DTC Confirmation Procedure ................................370
Diagnosis Procedure .............................................370
Component Inspection ...........................................373
P2135 TP SENSOR .........................................374
Component Description ....................................... ..374
On Board Diagnosis Logic .....................................374
DTC Confirmation Procedure ................................374
Diagnosis Procedure .............................................374
Component Inspection ...........................................377
P2138 APP SENSOR ......................................378
Component Description ....................................... ..378
On Board Diagnosis Logic .....................................378
DTC Confirmation Procedure ................................378
Diagnosis Procedure .............................................379
Component Inspection ......................................... .381
P2A00, P2A03 A/F SENSOR 1 ........................382
Component Description ....................................... .382
On Board Diagnosis Logic ....................................382
DTC Confirmation Procedure ................................382
Diagnosis Procedure .............................................383
ASCD BRAKE SWITCH ...................................388
Component Description ....................................... .388
Diagnosis Procedure .............................................388
Component Inspection ..........................................390
ASCD INDICATOR ...........................................391
Component Description ....................................... .391
Diagnosis Procedure .............................................391
COOLING FAN .................................................392
Diagnosis Procedure ............................................ .392
Component Inspection ..........................................392
ELECTRICAL LOAD SIGNAL ..........................394
Description ........................................................... .394
Diagnosis Procedure .............................................394
FUEL INJECTOR ..............................................396
Component Description ....................................... .396
Diagnosis Procedure .............................................396
Component Inspection ..........................................398
FUEL PUMP .....................................................399
Description ........................................................... .399
Diagnosis Procedure .............................................399
Component Inspection ..........................................402
ICC BRAKE SWITCH ..................................... ..403
Component Description ....................................... .403
Diagnosis Procedure .............................................403
Component Inspection ..........................................405
IGNITION SIGNAL ............................................407
Component Description ....................................... .407
Diagnosis Procedure .............................................407
Component Inspection ..........................................410
ON BOARD REFUELING VAPOR RECOV-
ERY (ORVR) .....................................................
412
System Description .............................................. .412
Diagnosis Procedure .............................................412
Component Inspection ..........................................414
POSITIVE CRANKCASE VENTILATION .........417
Description ........................................................... .417
Component Inspection ..........................................417
REFRIGERANT PRESSURE SENSOR ...........419
Component Description ....................................... .419
Diagnosis Procedure .............................................419
ECU DIAGNOSIS ......................................422
ECM ................................................................ ..422
Revision: April 20092010 QX56

EC-18
< BASIC INSPECTION >[VK56DE]
INSPECTION AND ADJUSTMENT
With CONSULT-III
1. Check the VIN of the vehicle and note it. Refer to
GI-20, "Model Variation".
2. Turn ignition switch ON and engine stopped.
3. Select “VIN REGISTRATION ” in “WORK SUPPORT” mode.
4. Follow the instruction of CONSULT-III display.
Accelerator Pedal Released Position LearningINFOID:0000000005149059
DESCRIPTION
Accelerator Pedal Released Position Learning is an operation to learn the fully released position of the accel-
erator pedal by monitoring the accelerator pedal positi on sensor output signal. It must be performed each time
harness connector of accelerator pedal pos ition sensor or ECM is disconnected.
OPERATION PROCEDURE
1. Make sure that accelerator pedal is fully released.
2. Turn ignition switch ON and wait at least 2 seconds.
3. Turn ignition switch OFF and wait at least 10 seconds.
4. Turn ignition switch ON and wait at least 2 seconds.
5. Turn ignition switch OFF and wait at least 10 seconds.
Throttle Valve Closed Position LearningINFOID:0000000005149060
DESCRIPTION
Throttle Valve Closed Position Learning is an operation to l earn the fully closed position of the throttle valve by
monitoring the throttle position sensor output signal . It must be performed each time harness connector of
electric throttle control actuator or ECM is disconnected.
OPERATION PROCEDURE
1. Make sure that accelerator pedal is fully released.
2. Turn ignition switch ON.
3. Turn ignition switch OFF wait at least 10 seconds. Make sure that throttle valve moves during above 10 seconds by confirming the operating sound.
Idle Air Volume LearningINFOID:0000000005149061
DESCRIPTION
Idle Air Volume Learning is an operation to learn the idle air volume that keeps each engine within the specific
range. It must be performed under any of the following conditions:
• Each time electric throttle control actuator or ECM is replaced.
• Idle speed or ignition timing is out of specification.
PREPARATION
Before performing Idle Air Volume Learning, make sure that all of the following conditions are satisfied.
Learning will be cancelled if any of the follo wing conditions are missed for even a moment.
• Battery voltage: More than 12.9V (At idle)
• Engine coolant temperature: 70 - 100 °C (158 - 212° F)
• Select lever: P or N
• Electric load switch: OFF (Air conditioner, headlamp, rear window defogger)
On vehicles equipped with daytime light systems, if the parking brake is applied before the engine is
start the headlamp will not be illuminated.
• Steering wheel: Neutral (Straight-ahead position)
• Vehicle speed: Stopped
• Transmission: Warmed-up
- With CONSULT-III: Drive vehicle until “ATF TEMP SE 1” in “DATA MONITOR” mode of “A/T” system indi- cates less than 0.9V.
- Without CONSULT-III: Drive vehicle for 10 minutes.
OPERATION PROCEDURE
Revision: April 20092010 QX56