brake fluid INFINITI QX4 2005 Factory Service Manual

QUICK REFERENCE CHART: QX56
2005

Rear Wheel AlignmentELS001U6
BrakeELS001U7
Unit: mm (in) Camber
Degree minute (decimal degree)Minimum 0° 0′ (0°)
Nominal - 0° 30′ (-0.5°)
Maximum - 1° 0′ (-1.0°)
Cross camber 0° 45′ (0.75°)
To e - i nDistance (A - B)Minimum 0 mm (0 in)
Nominal 3.3 mm (0.130 in)
Maximum 6.6 mm (0.260 in)
Cross toe 2 mm (0.079 in)
Angle (left, right)
Degree minute (decimal
degree)Minimum 0° 0′ (0°)
Nominal 0° 7′ (0.11°)
Maximum 0° 14′ (0.22°)
Cross toe 0° 8′ (0.14°)
SFA234AC
Front brake Brake model CLZ31VC
Rotor outer diameter × thickness 320 × 26 (12.60 × 1.02)
Pad Length × width × thickness 111.0 × 73.5 × 9.5 (4.73 × 2.894 × 0.374)
Cylinder bore diameter 51 (2.01)
Rear brake Brake model AD14VE
Rotor outer diameter × thickness 320 × 14 (12.60 × 0.55)
Pad Length × width × thickness 83.0 × 33.0 × 8.5 (3.268 × 1.299 × 0.335)
Cylinder bore diameter 48 (1.89)
Control valve Valve model Electric brake force distribution
Brake booster Booster model C215T
Diaphragm diameter 215 (8.46)
Recommended brake fluidGenuine NISSAN Super Heavy Duty Brake Fluid or equivalent,
DOT 3 (US FMVSS No. 116)

2005
QUICK REFERENCE CHART: QX56

Disc Brake - Repair LimitsELS001U8
Unit: mm (in)
Brake PedalELS001U9
Unit: mm (in)
Refill CapacitiesELS001UA
Brake model CLZ31VC (Front) AD14VE (Rear)
Brake PadStandard thickness (new) 11.88 (0.468) 12.13 (0.478)
Repair limit thickness 1.0 (0.039) 1.0 (0.039)
Disc rotorStandard thickness (new) 26.0 (1.024) 14.0 (0.551)
Repair limit thickness 24.5 (0.965) 12.0 (0.472)
Maximum uneven wear (measured at 8 positions) 0.015 (0.0006) 0.015 (0.0006)
Runout limit (with it attached to the vehicle) 0.04 (0.0016) 0.05 (0.0020)
Brake pedal height (from dash panel top surface) 182.3 − 192.3 (7.18 − 7.57)
Depressed pedal height [under a force of 490 N (50 kg, 110 lb) with engine running] More than 90.3 (3.55)
Clearance between stopper rubber and the threaded end of stop lamp switch 0.74 − 1.96 (0.029 − 0.077)
Pedal play3 − 11 (0.12 − 0.43)
DescriptionCapacity (Approximate)
Metric US measure Imp measure
Fuel
105.8 28 US gal 23 1/4 Imp gal
Engine oil
Drain and refillWith oil filter change
6.2 6 1/2 qt 5 1/2 qt
Without oil filter change
5.9 6 1/4 qt 5 1/4 qt
Dry engine (engine overhaul)
7.6 8 qt 6 3/4 qt
Cooling system With reservoir at MAX level
14.4 3 3/4 gal 3 1/8 gal
Automatic transmission fluid (ATF)
10.6 11 1/4 qt 9 3/8 qt
Rear final drive oil
1.75 3 3/4 pt 3 1/8 pt
Transfer fluid
3.0 3 1/8 qt 2 5/8 qt
Front final drive oil
1.6 3 3/8 pt 2 7/8 pt
Power steering fluid (PSF)
1.0 2 1/8 pt 1 3/4 pt
Windshield washer fluid
4.5 1 1/4 gal 1 gal
Air conditioning system refrigerant 1.08 ± 0.05 kg 2.38 ± 0.11 lb 2.38 ± 0.11 lb
Air conditioning system lubricants
290 m9.8 fl oz 10.2 fl oz

DESCRIPTION
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Components DescriptionEKS00BLI
CAN CommunicationEKS00BLJ
SYSTEM DESCRIPTION
Refer to LAN-5, "CAN COMMUNICATION" .
Switch OperationEKS00BLK
The system is operated by a master ON/OFF switch and four control switches, all mounted on the steering
wheel.
ComponentVehicle-to-vehicle
distance control
modeConventional
(fixed speed)
cruise control
modeBrake assist
(with preview
brake)Description
ICC unit×××Controls vehicle speed through ECM via CAN
communication.
ICC sensor××Irradiate laser beam, and receives reflected
laser beam to measure distance from preceding
vehicle.
ECM×××Transmits throttle position signal and ICC steer-
ing switch signal to ICC unit.
ABS actuator and electric
unit (control unit)×××Transmits wheel speed signal to ICC unit.
Operates brake booster based on CAN commu-
nication.
Brake pressure sensor××Detects fluid pressure in master cylinder.
Brake booster××Adjusts brake fluid pressure based on command
from ABS actuator and electric unit (control
unit).
BCM×Transmit front wiper request signal to ICC unit.
TCM××Transmits gear position signal and output shaft
revolution signal to ICC unit.
No. Switch name Description
1 ACCEL/RES switch Resumes set speed or increases speed incrementally.
2 COAST/SET switch Sets desired cruise speed, reduces speed incrementally.
3 ON/OFF switch Master switch to activate the system.
SKIA5973E

TROUBLE DIAGNOSIS — GENERAL DESCRIPTION
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ACTIVE TEST
CAUTION:
Do not perform the active test while driving. Active test cannot be started while ICC system warning
indicator is illuminated.
Active Test
1. Touch “ACTIVE TEST” on "SELECT DIAG MODE" screen.
IDLE SW
[ON/OFF]
××Indicates [ON/OFF] status of idle switch
read by ICC unit via CAN communication
(ECM transmits ON/OFF status via CAN
communication).
GEAR
[1, 2, 3, 4, 5]××Indicates A/T gear position read by ICC unit
via CAN communication (TCM transmits
gear position via CAN communication).
BUZZER O/P
[ON/OFF] ×Indicates [ON/OFF] status of ICC warning
output.
ICC WARNING×NOTE:
This item is displayed but cannot be moni-
tored.
VHCL SPD AT
[km/h] or [mph]
×Indicates vehicle speed calculated from A/T
vehicle speed sensor by ICC unit via CAN
communication (TCM transmits A/T vehicle
speed sensor signal via CAN communica-
tion).
PRESS SENS
[bar]×××Indicates brake fluid pressure value calcu-
lated from signal voltage of pressure sen-
sor.
PRESS SENS 2
[bar]××NOTE:
This item is displayed but cannot be moni-
tored.
D RANGE SW
[ON/OFF]
××Indicates [ON/OFF] status of “D” position
read by ICC unit via CAN communication
(TCM transmits ON/OFF condition of “D”
position via CAN communication).
AT OD OFF
[ON/OFF]×Indicates [ON/OFF] status of OD cancel
output under control.
NP RANGE SW
[ON/OFF]
××Indicates PNP switch signal read by ICC
unit via CAN communication. (TCM trans-
mits PNP switch signal via CAN communi-
cation)
DISTANCE×NOTE:
This item is displayed but cannot be moni-
tored.
RELATIVE SPD×NOTE:
This item is displayed but cannot be moni-
tored.
STP LMP DRIVE
[ON/OFF]××Indicates [ON/OFF] status of brake hold
relay drive output. Monitored Item [unit] MAIN SIGNALSECU
INPUT
SIGNALSSELECTION
FROM MENUDescription

AT-1
AUTOMATIC TRANSMISSION
C TRANSMISSION/TRANSAXLE
CONTENTS
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SECTION AT
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Revision: October 20052005 QX56 INDEX FOR DTC ........................................................ 5
Alphabetical Index .................................................... 5
DTC No. Index ......................................................... 6
PRECAUTIONS .......................................................... 7
Precautions for Supplemental Restraint System
(SRS) “AIR BAG” and “SEAT BELT PRE-TEN-
SIONER” .................................................................. 7
Precautions for On Board Diagnostic (OBD) System
of A/T and Engine .................................................... 7
Precautions .............................................................. 8
Service Notice or Precautions .................................. 9
Wiring Diagrams and Trouble Diagnosis .................. 9
PREPARATION ......................................................... 10
Special Service Tools ............................................. 10
Commercial Service Tools ...................................... 12
A/T FLUID ................................................................. 13
Changing A/T Fluid ................................................ 13
Checking A/T Fluid ................................................. 13
A/T Fluid Cooler Cleaning ...................................... 13
A/T CONTROL SYSTEM .......................................... 16
Cross-Sectional View (2WD models) ..................... 16
Cross-Sectional View (4WD models) ..................... 17
Shift Mechanism ..................................................... 18
TCM Function ......................................................... 29
CAN Communication .............................................. 30
Input/Output Signal of TCM .................................... 30
Line Pressure Control ............................................ 31
Shift Control ........................................................... 32
Lock-up Control ...................................................... 33
Engine Brake Control ............................................. 35
Control Valve .......................................................... 35
ON BOARD DIAGNOSTIC (OBD) SYSTEM ............ 37
Introduction ............................................................ 37
OBD-II Function for A/T System ............................. 37
One or Two Trip Detection Logic of OBD-II ............ 37
OBD-II Diagnostic Trouble Code (DTC) ................. 37
Malfunction Indicator Lamp (MIL) ........................... 40
TROUBLE DIAGNOSIS ............................................ 41
DTC Inspection Priority Chart ................................ 41
Fail-Safe ................................................................. 41How To Perform Trouble Diagnosis For Quick and
Accurate Repair ...................................................... 43
A/T Electrical Parts Location .................................. 48
Circuit Diagram ....................................................... 49
Inspections Before Trouble Diagnosis .................... 50
Check Before Engine is Started .............................. 54
Check at Idle ........................................................... 54
Cruise Test - Part 1 ................................................. 55
Cruise Test - Part 2 ................................................. 57
Cruise Test - Part 3 ................................................. 58
Vehicle Speed When Shifting Gears ...................... 59
Vehicle Speed When Performing and Releasing
Complete Lock-up .................................................. 59
Vehicle Speed When Performing and Releasing
Slip Lock-up ............................................................ 59
Symptom Chart ....................................................... 60
TCM Input/Output Signal Reference Values ........... 82
CONSULT-II Function (A/T) .................................... 83
DTC U1000 CAN COMMUNICATION LINE .............. 95
Description .............................................................. 95
On Board Diagnosis Logic ...................................... 95
Possible Cause ....................................................... 95
DTC Confirmation Procedure ................................. 95
Wiring Diagram — AT — CAN ................................ 96
Diagnostic Procedure ............................................. 98
DTC P0615 START SIGNAL CIRCUIT ..................... 99
Description .............................................................. 99
CONSULT-II Reference Value ................................ 99
On Board Diagnosis Logic ...................................... 99
Possible Cause ....................................................... 99
DTC Confirmation Procedure ................................. 99
Wiring Diagram — AT — STSIG ..........................100
Diagnostic Procedure ...........................................101
DTC P0700 TCM .....................................................103
Description ............................................................103
On Board Diagnosis Logic ....................................103
Possible Cause .....................................................103
DTC Confirmation Procedure ...............................103
Diagnostic Procedure ...........................................103
DTC P0705 PARK/NEUTRAL POSITION SWITCH .104

AT-4Revision: October 20052005 QX56 A/T Does Not Shift: D
3 → D4 ................................199
A/T Does Not Shift: D
4 → D5 ................................202
A/T Does Not Perform Lock-up ............................204
A/T Does Not Hold Lock-up Condition ..................206
Lock-up Is Not Released ......................................208
Engine Speed Does Not Return to Idle ................209
A/T Does Not Shift: 5th gear → 4th gear ..............210
A/T Does Not Shift: 4th gear → 3rd gear ..............213
A/T Does Not Shift: 3rd gear → 2nd gear .............214
A/T Does Not Shift: 2nd gear → 1st gear .............216
Vehicle Does Not Decelerate By Engine Brake ....219
A/T SHIFT LOCK SYSTEM .....................................222
Description ............................................................222
Shift Lock System Electrical Parts Location .........222
Wiring Diagram — A/T — SHIFT ..........................223
Shift Lock Control Unit Reference Values .............224
Component Inspection ..........................................225
SHIFT CONTROL SYSTEM ....................................227
Control Device Removal and Installation ..............227
Adjustment of A/T Position ...................................228
Checking of A/T Position ......................................228
ON-VEHICLE SERVICE ..........................................229
Oil Pan ..................................................................229
Control Valve With TCM and A/T Fluid Temperature
Sensor 2 ...............................................................231
Rear Oil Seal ........................................................241
AIR BREATHER HOSE ...........................................242
Removal and Installation ......................................242
TRANSMISSION ASSEMBLY ................................244
Removal and Installation (4x2) .............................244
Removal and Installation (4x4) .............................247
OVERHAUL .............................................................250Components .......................................................... 250
Oil Channel ........................................................... 258
Locations of Adjusting Shims, Needle Bearings,
Thrust Washers and Snap Rings .......................... 260
DISASSEMBLY ....................................................... 262
Disassembly .......................................................... 262
REPAIR FOR COMPONENT PARTS ...................... 280
Oil Pump ............................................................... 280
Front Sun Gear, 3rd One-Way Clutch ................... 282
Front Carrier, Input Clutch, Rear Internal Gear ..... 284
Mid Sun Gear, Rear Sun Gear, High and Low
Reverse Clutch Hub .............................................. 289
High and Low Reverse Clutch .............................. 294
Direct Clutch ......................................................... 296
ASSEMBLY ............................................................. 298
Assembly (1) ......................................................... 298
Adjustment ............................................................311
Assembly (2) ......................................................... 314
SERVICE DATA AND SPECIFICATIONS (SDS) .... 321
General Specifications .......................................... 321
Vehicle Speed When Shifting Gears ..................... 321
Vehicle Speed When Performing and Releasing
Complete Lock-up ................................................. 322
Vehicle Speed When Performing and Releasing
Slip Lock-up .......................................................... 322
Stall Speed ............................................................ 322
Line Pressure ........................................................ 322
A/T Fluid Temperature Sensor .............................. 322
Turbine Revolution Sensor .................................... 322
Vehicle Speed Sensor A/T (Revolution Sensor) ... 322
Reverse brake ....................................................... 323
Total End Play ....................................................... 323

A/T CONTROL SYSTEM
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TCM FunctionECS00CDW
The function of the TCM is to:

Receive input signals sent from various switches and sensors.

Determine required line pressure, shifting point, lock-up operation, and engine brake operation.

Send required output signals to the respective solenoids.
CONTROL SYSTEM OUTLINE
The automatic transmission senses vehicle operating conditions through various sensors or signals. It always
controls the optimum shift position and reduces shifting and lock-up shocks.
CONTROL SYSTEM DIAGRAM
SENSORS (or SIGNALS)


TCM


ACTUATORS
PNP switch
Accelerator pedal position sensor
Closed throttle position signal
Wide open throttle position signal
Engine speed signal
A/T fluid temperature sensor
Revolution sensor
Vehicle speed signal
Stop lamp switch signal
Turbine revolution sensor
1st position switch signal
4th position switch signal
ATF pressure switch signal
Tow mode switch signalShift control
Line pressure control
Lock-up control
Engine brake control
Timing control
Fail-safe control
Self-diagnosis
CONSULT-II communication line
Duet-EA control
CAN systemInput clutch solenoid valve
Direct clutch solenoid valve
Front brake solenoid valve
High and low reverse clutch
solenoid valve
Low coast brake solenoid valve
Torque converter clutch solenoid
valve
Line pressure solenoid valve
A/T CHECK indicator lamp
Sta rte r re lay
Back-up lamp relay
SCIA5624E

AT-30
A/T CONTROL SYSTEM
Revision: October 20052005 QX56
CAN CommunicationECS00CDX
SYSTEM DESCRIPTION
CAN (Controller Area Network) is a serial communication line for real time application. It is an on-vehicle mul-
tiplex communication line with high data communication speed and excellent error detection ability. Many elec-
tronic control units are equipped onto a vehicle, and each control unit shares information and links with other
control units during operation (not independent). In CAN communication, control units are connected with 2
communication lines (CAN H line, CAN L line) allowing a high rate of information transmission with less wiring.
Each control unit transmits/receives data but selectively reads required data only. For details, refer to LAN-5,
"CAN COMMUNICATION" .
Input/Output Signal of TCMECS00CDY
*1: Spare for vehicle speed sensor·A/T (revolution sensor)
*2: Spare for accelerator pedal position signal
*3: If these input and output signals are different, the TCM triggers the fail-safe function.
*4: CAN communicationsControl itemLine
pressure
controlVehicle
speed
controlShift
controlLock-up
controlEngine
brake
controlFail-safe
function
(*3)Self-diag-
nostics
function
InputAccelerator pedal position signal
(*4)XXXXXXX
Vehicle speed sensor A/T
(revolution sensor)XXXX XX
Vehicle speed sensor MTR
(*1) (*4)XXXX X
Closed throttle position signal
(*4)(*2) X (*2) X X (*2) X X
Wide open throttle position signal
(*4)(*2) X (*2) X (*2) X X
Turbine revolution sensor 1 X X X X X
Turbine revolution sensor 2
(for 4th speed only)XX X XX
Engine speed signals
(*4)XX
PNP switch XXXXXXX
A/T fluid temperature sensors 1, 2 X X X X X X X
ASCDOperation signal
(*4)XXXX
Overdrive cancel
signal
(*4)XXX
TCM power supply voltage signal X X X X X X
Out-
putDirect clutch solenoid (ATF pres-
sure switch 5)XX XX
Input clutch solenoid (ATF pressure
switch 3)XX XX
High and low reverse clutch sole-
noid (ATF pressure switch 6)XX XX
Front brake solenoid (ATF pressure
switch 1)XX XX
Low coast brake solenoid (ATF
pressure switch 2)XX XXX
Line pressure solenoid X X X X X X X
TCC solenoid X X X
Starte r re la yXX

AT-32
A/T CONTROL SYSTEM
Revision: October 20052005 QX56
During Shift Change
The necessary and adequate line pressure for shift change is set.
For this reason, line pressure pattern setting corresponds to input
torque and gearshift selection. Also, line pressure characteristic is
set according to engine speed, during engine brake operation.
At Low Fluid Temperature
When the A/T fluid temperature drops below the prescribed tempera-
ture, in order to speed up the action of each friction element, the line
pressure is set higher than the normal line pressure characteristic.
Shift ControlECS00CE0
The clutch pressure control solenoid is controlled by the signals from the switches and sensors. Thus, the
clutch pressure is adjusted to be appropriate to the engine load state and vehicle driving state. It becomes
possible to finely control the clutch hydraulic pressure with high precision and a smoother shift change charac-
teristic is attained.
SHIFT CHANGE
The clutch is controlled with the optimum timing and oil pressure by the engine speed, engine torque informa-
tion, etc.
PCIA0010E
PCIA0 011 E
PCIA0012E

AT-46
TROUBLE DIAGNOSIS
Revision: October 20052005 QX56
4❏ Perform all road tests and enter checks in required inspection items.AT-5 3
4-1.Check before engine is started
AT-5 4
❏ AT-180, "A/T CHECK Indicator Lamp Does Not Come On" .
❏ Perform self-diagnostics Enter checks for detected items. AT- 8 5
❏ AT- 9 5 , "DTC U1000 CAN COMMUNICATION LINE"
❏ AT- 9 9 , "DTC P0615 START SIGNAL CIRCUIT"
❏ AT- 1 0 3 , "DTC P0700 TCM"
❏ AT- 1 0 4 , "DTC P0705 PARK/NEUTRAL POSITION SWITCH"
❏ AT- 1 0 8 , "DTC P0720 VEHICLE SPEED SENSOR A/T (REVOLUTION SENSOR)"
❏ AT- 11 3 , "DTC P0725 ENGINE SPEED SIGNAL"
❏ AT- 11 5 , "DTC P0740 TORQUE CONVERTER CLUTCH SOLENOID VALVE"
❏ AT- 11 7 , "DTC P0744 A/T TCC S/V FUNCTION (LOCK-UP)"
❏ AT- 11 9 , "DTC P0745 LINE PRESSURE SOLENOID VALVE"
❏ AT- 1 2 1 , "DTC P1702 TRANSMISSION CONTROL MODULE (RAM)"
❏ AT- 1 2 2 , "DTC P1703 TRANSMISSION CONTROL MODULE (ROM)"
❏ AT- 1 2 3 , "DTC P1705 THROTTLE POSITION SENSOR"
❏ AT- 1 2 6 , "DTC P1710 A/T FLUID TEMPERATURE SENSOR CIRCUIT"
❏ AT- 1 3 1 , "DTC P1716 TURBINE REVOLUTION SENSOR"
❏ AT- 1 3 3 , "DTC P1721 VEHICLE SPEED SENSOR MTR"
❏ AT- 1 3 5 , "DTC P1730 A/T INTERLOCK"
❏ AT- 1 3 8 , "DTC P1731 A/T 1ST ENGINE BRAKING"
❏ AT- 1 4 0 , "DTC P1752 INPUT CLUTCH SOLENOID VALVE"
❏ AT- 1 4 2 , "DTC P1754 INPUT CLUTCH SOLENOID VALVE FUNCTION"
❏ AT- 1 4 4 , "DTC P1757 FRONT BRAKE SOLENOID VALVE"
❏ AT- 1 4 6 , "DTC P1759 FRONT BRAKE SOLENOID VALVE FUNCTION"
❏ AT- 1 4 8 , "DTC P1762 DIRECT CLUTCH SOLENOID VALVE"
❏ AT- 1 5 0 , "DTC P1764 DIRECT CLUTCH SOLENOID VALVE FUNCTION"
❏ AT- 1 5 2 , "DTC P1767 HIGH AND LOW REVERSE CLUTCH SOLENOID VALVE"
❏ AT- 1 5 4 , "DTC P1769 HIGH AND LOW REVERSE CLUTCH SOLENOID VALVE
FUNCTION"
❏ AT- 1 5 6 , "DTC P1772 LOW COAST BRAKE SOLENOID VALVE"
❏ AT- 1 5 8 , "DTC P1774 LOW COAST BRAKE SOLENOID VALVE FUNCTION"
❏ AT- 1 6 0 , "DTC P1841 ATF PRESSURE SWITCH 1"
❏ AT- 1 6 2 , "DTC P1843 ATF PRESSURE SWITCH 3"
❏ AT- 1 6 4 , "DTC P1845 ATF PRESSURE SWITCH 5"
❏ AT- 1 6 6 , "DTC P1846 ATF PRESSURE SWITCH 6"
4-2.Idle inspection
AT-5 4
❏ AT-180, "Engine Cannot Be Started In “P” or “N” Position"
❏ AT-181, "In “P” Position, Vehicle Moves When Pushed"
❏ AT-182, "In “N” Position, Vehicle Moves"
❏ AT-183, "Large Shock (“N” to “D” Position)"
❏ AT-187, "Vehicle Does Not Creep Backward In “R” Position"
❏ AT-190, "Vehicle Does Not Creep Forward In “D” Position"
4-3.Driving tests
AT-5 5
Part 1
❏ AT-192, "
Vehicle Cannot Be Started From D1"
❏ AT-195, "A/T Does Not Shift: D1 → D2"
❏ AT-197, "A/T Does Not Shift: D2 → D3"
❏ AT-199, "A/T Does Not Shift: D3 → D4"
❏ AT-202, "A/T Does Not Shift: D4 → D5"
❏ AT-204, "A/T Does Not Perform Lock-up"
❏ AT-206, "A/T Does Not Hold Lock-up Condition"
❏ AT-208, "Lock-up Is Not Released"
❏ AT-209, "Engine Speed Does Not Return to Idle"