check transmission fluid INFINITI QX56 2009 Factory User Guide

TM-4
Precaution for Supplemental Restraint System
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN-
SIONER" ................................................................
174
Precaution Necessary for Steering Wheel Rota-
tion After Battery Disconnect .................................
174
Precaution for On Board Diagnosis (OBD) System
of A/T and Engine ..................................................
175
Precaution .............................................................175
Service Notice or Precaution .................................176
PREPARATION ..........................................177
PREPARATION .............................................. .177
Special Service Tool ............................................ ..177
Commercial Service Tool ......................................178
ON-VEHICLE MAINTENANCE ..................179
A/T FLUID ....................................................... .179
Checking the A/T Fluid (ATF) .............................. ..179
Changing the A/T Fluid (ATF) ................................181
A/T FLUID COOLER ........................................183
A/T Fluid Cooler Cleaning ................................... ..183
Inspection ..............................................................185
STALL TEST ....................................................186
Inspection and Judgment .................................... ..186
LINE PRESSURE TEST ..................................188
Inspection and Judgment .................................... ..188
ROAD TEST .....................................................190
Description ........................................................... ..190
Check Before Engine Is Started ............................190
Check At Idle .........................................................190
Cruise Test - Part 1 ...............................................191
Cruise Test - Part 2 ...............................................193
Cruise Test - Part 3 ...............................................194
Vehicle Speed When Shifting Gears .....................194
Vehicle Speed When Performing and Releasing
Complete Lock-up .................................................
194
A/T POSITION .................................................195
Adjustment of A/T Position .................................. ..195
Checking of A/T Position .......................................195
ON-VEHICLE REPAIR ............................. ..196
SHIFT CONTROL SYSTEM ........................... .196
A/T Shift Selector Removal and Installation ........ ..196
AIR BREATHER HOSE ...................................197
2WD ........................................................................ ..197
2WD : Removal and Installation ............................197
4WD ........................................................................ ..197
4WD : Removal and Installation ............................197
OIL PAN ...........................................................201
Oil Pan ................................................................. .201
CONTROL VALVE WITH TCM ........................203
Control Valve with TCM and A/T Fluid Tempera-
ture Sensor 2 ....................................................... .
203
REAR OIL SEAL ..............................................212
Rear Oil Seal ........................................................ .212
FLUID COOLER SYSTEM ...............................213
Exploded View ..................................................... .213
Removal and Installation .......................................213
REMOVAL AND INSTALLATION .............214
TRANSMISSION ASSEMBLY ........................ ..214
Removal and Installation (2WD) .......................... .214
Removal and Installation (4WD) ...........................216
DISASSEMBLY AND ASSEMBLY ...........220
OVERHAUL .................................................... ..220
Component .......................................................... .220
Oil Channel ...........................................................227
Location of Adjusting Shims, Needle Bearings,
Thrust Washers and Snap Rings ......................... .
229
DISASSEMBLY .............................................. ..232
Disassembly ......................................................... .232
REPAIR FOR COMPONENT PARTS ..............249
Oil Pump .............................................................. .249
Front Sun Gear, 3rd One-Way Clutch ...................251
Front Carrier, Input Clutch, Rear Internal Gear .....253
Mid Sun Gear, Rear Sun Gear, High and Low Re-
verse Clutch Hub ..................................................
258
High and Low Reverse Clutch ..............................263
Direct Clutch .........................................................265
ASSEMBLY .................................................... ..268
Assembly (1) ........................................................ .268
Adjustment ............................................................281
Assembly (2) .........................................................283
SERVICE DATA AND SPECIFICATIONS
(SDS) ............... ..........................................
290
SERVICE DATA AND SPECIFICATIONS
(SDS) .............................................................. ..
290
General Specification ........................................... .290
Vehicle Speed at Which Gear Shifting Occurs .....290
Vehicle Speed at Which Lock-up Occurs/Releas-
es ..........................................................................
291
Stall Speed ............................................................291
Line Pressure ........................................................291
Input Speed Sensor ..............................................291
Output Speed Sensor ...........................................291
Reverse Brake ......................................................291
Total End Play .......................................................292
Torque Converter .................................................
Revision: December 20092009 QX56

DIAGNOSIS AND REPAIR WORKFLOWTM-5
< BASIC INSPECTION >
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BASIC INSPECTION
DIAGNOSIS AND REPAIR WORKFLOW
Work FlowINFOID:0000000003771803
INTRODUCTION
The TCM receives a signal from the output speed sensor, accelera-
tor pedal position sensor (throttle position sensor) or transmission
range switch. Then provides shift c ontrol or lock-up control via A/T
solenoid valves.
The TCM also communicates with the ECM by means of a signal
sent from sensing elements used wit h the OBD-related parts of the
A/T system for malfunction-diagnostic purposes. The TCM is capa-
ble of diagnosing malfunctioning parts while the ECM can store mal-
functions in its memory.
Input and output signals must always be correct and stable in the
operation of the A/T system. T he A/T system must be in good oper-
ating condition and be free of valve seizure, solenoid valve malfunc-
tion, etc.
It is much more difficult to diagnose an error that occurs intermit-
tently rather than continuously. Most intermittent errors are caused
by poor electric connections or impr oper wiring. In this case, careful
checking of suspected circuits may help prevent the replacement of
good parts.
A visual check only may not find t he cause of the errors. A road test
with CONSULT-III (or GST) or a circuit tester connected should be
performed. Follow the “DETAILED FLOW”.
Before undertaking actual checks, take a few minutes to talk with a
customer who approaches with a driveability complaint. The cus-
tomer can supply good information about such errors, especially
intermittent ones. Find out what symptoms are present and under
what conditions they occur. A “Diagnostic work sheet” as shown on
the example (Refer to TM-6
) should be used.
Start your diagnosis by looking for “conventional” errors first. This will
help troubleshoot driveability errors on an electronically controlled
engine vehicle.
Also check related Service bulletins.
DETAILED FLOW
1.COLLECT THE INFORMATION FROM THE CUSTOMER
Get the detailed information from the customer about the symptom (the condition and the environment when
the incident/malfunction occurred) using diagnosis worksheet. Refer to TM-6, "Diagnostic Work Sheet"
.
>> GO TO 2.
2.CHECK SYMPTOM 1
Check the following items based on the in formation obtained from the customer.
 Fail-safe. Refer to TM-115, "Fail-Safe"
.
 A/T fluid inspection. Refer to TM-179, "Checking the A/T Fluid (ATF)"
.
 Stall test. Refer to TM-186, "Inspection and Judgment"
.
 Line pressure test. Refer to TM-188, "Inspection and Judgment"
.
SAT631IB
SAT632I
SEF234G
Revision: December 20092009 QX56

A/T CONTROL SYSTEMTM-21
< FUNCTION DIAGNOSIS >
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CONTROL SYSTEM DIAGRAM
CAN CommunicationINFOID:0000000003771809
SYSTEM DESCRIPTION
CAN (Controller Area Network) is a serial communication li ne 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-4,
"System Description".
SENSORS (or SIGNALS)
⇒TCM
⇒ACTUATORS
Transmission range switch
Accelerator pedal position sensor
Closed throttle position signal
Wide open throttle position signal
Engine speed signal
A/T fluid temperature sensor
Output speed sensor
Vehicle speed signal
Stop lamp switch signal
Input speed sensor
1st position switch signal
4th position switch signal
ATF pressure switch 2 signal
Tow mode switch signal Shift control
Line pressure control
Lock-up control
Engine brake control
Timing control
Fail-safe control
Self-diagnosis
CONSULT-III co
mmunication
line
Duet-EA control
CAN system Input clutch solenoid valve
Direct clutch solenoid valve
Front brake solenoid valve
High and low reverse clutch sole-
noid valve
Low coast brake solenoid valve
Torque converter clutch solenoid
valve
Line pressure solenoid valve
A/T CHECK indicator lamp
Starter relay
Back-up lamp relay
JSDIA1315GB
Revision: December 20092009 QX56

P0700 TRANSMISSION CONTROLTM-43
< COMPONENT DIAGNOSIS >
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P0700 TRANSMISSION CONTROL
DescriptionINFOID:0000000003771836
The TCM consists of a microcomputer and connectors for signal input and output and for power supply. The
TCM controls the A/T.
On Board Diagnosis LogicINFOID:0000000003771837
 This is an OBD-II self-diagnostic item.
 Diagnostic trouble code “P0700” with CONSULT-III is detected when the TCM is malfunctioning.
Possible CauseINFOID:0000000003771838
TCM.
DTC Confirmation ProcedureINFOID:0000000003771839
NOTE:
If “DTC Confirmation Procedure” has been previously performed, always turn ignition switch “OFF”
and wait at least 10 seconds before performing the next test.
After the repair, perform the following procedure to confirm the malfunction is eliminated.
WITH CONSULT-III
1. Turn ignition switch “ON”. (Do not start engine.)
2. Select “DATA MONITOR” mode for “TRANSMISSION” with CONSULT-III.
3. Start engine.
4. Run engine for at least 2 cons ecutive seconds at idle speed.
5. If DTC is detected, go to TM-43, "Diagnosis Procedure"
.
WITH GST
Follow the procedure “With CONSULT-III”.
Diagnosis ProcedureINFOID:0000000003771840
1.CHECK DTC
With CONSULT-III
1. Turn ignition switch “ON”. (Do not start engine.)
2. Select “SELF DIAG RESULTS” mode fo r “TRANSMISSION” with CONSULT-III.
3. Touch “ERASE”.
4. Turn ignition switch “OFF” and wait at least 10 seconds.
5. Perform DTC Confirmation Procedure, TM-43, "DTC Confirmation Procedure"
.
Is the
“P7000” displayed again?
YES >> Replace the control valve with TCM. Refer to TM-203, "Control Valve with TCM and A/T Fluid
Temperature Sensor 2".
NO >> INSPECTION END
Revision: December 20092009 QX56

P0705 TRANSMISSION RANGE SWITCH A
TM-45
< COMPONENT DIAGNOSIS >
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3. Check if correct selector lever position (N/P, R or D) is displayed as selector lever is moved into each posi- tion.
OK or NG
OK >> GO TO 5.
NG >> GO TO 2.
2.CHECK TCM POWER SUPPLY AND GROUND CIRCUIT
Perform TCM power supply and ground circuit. Refer to TM-92, "Diagnosis Procedure"
.
OK or NG
OK >> GO TO 3.
NG >> Repair or replace damaged parts.
3.DETECT MALFUNCTIONING ITEM
Check the following items:
 A/T assembly harness connector pin terminals fo r damage or loose connection with harness connector.
OK or NG
OK >> GO TO 4.
NG >> Repair or replace damaged parts.
4.CHECK SUB-HARNESS
1. Remove control valve with TCM. Refer to TM-203, "Control
Valve with TCM and A/T Fluid Temperature Sensor 2".
2. Disconnect transmission range switch connector and TCM con- nector.
3. Check continuity between transmission range switch connector
(A) terminals and TCM connector (B) terminals.
4. If OK, check harness for short to ground and short to power.
5. Reinstall any part removed.
OK or NG
Item name Condition Display value
SLCTLVR POSI Selector lever in “N”,“P” positions. N/P
Selector lever in “R” position. R
Selector lever in “D” position. D
Selector lever in
“4” position. 4
Selector lever in “3” position. 3
Selector lever in “2” position. 2
Selector lever in “1” position. 1
Item Connector Terminal Continuity
Transmission range
switch connector F505 1
Ye s
TCM connector F503 13
Transmission range
switch connector F505 2
Ye s
TCM connector F503 11
Transmission range
switch connector F505 3
Ye s
TCM connector F503 12
Transmission range
switch connector F505 5
Ye s
TCM connector F503 14
JSDIA1328GB
Revision: December 20092009 QX56

TM-46
< COMPONENT DIAGNOSIS >
P0705 TRANSMISSION RANGE SWITCH A
OK >> Replace the control valve with TCM. Refer to TM-203, "Control Valve with TCM and A/T Fluid
Temperature Sensor 2".
NG >> Replace open circuit or short to ground and short to power in harness or connectors.
5.CHECK DTC
Perform “DTC Confirmation Procedure”.
 Refer to TM-44, "DTC Confirmation Procedure"
.
OK or NG
OK >> INSPECTION END
NG >> GO TO 2.
Revision: December 20092009 QX56

TM-50
< COMPONENT DIAGNOSIS >
P0720 OUTPUT SPEED SENSOR
WITH GST
Follow the procedure “With CONSULT-III”.
Diagnosis ProcedureINFOID:0000000003771858
1.CHECK INPUT SIGNAL
With CONSULT-III
1. Turn ignition switch “ON”.
2. Select “ECU INPUT SIGNALS” in “DATA MONI TOR” mode for “TRANSMISSION” with CONSULT-III.
3. Start the engine.
4. Read out the value of “VHCL/S SE·A/T” while driving.
Check the value changes according to driving speed.
OK or NG
OK >> GO TO 6.
NG >> GO TO 2.
2.CHECK TCM POWER SUPPLY AND GROUND CIRCUIT
Check TCM power supply and ground circuit. Refer to TM-92, "Diagnosis Procedure"
.
OK or NG
OK >> GO TO 3.
NG >> Repair or replace damaged parts.
3.DETECT MALFUNCTIONING ITEM
Check the following items:
 The A/T assembly harness connector pin terminals for damage or loose connection with harness connector.
OK or NG
OK >> GO TO 4.
NG >> Repair or replace damaged parts.
4.CHECK SUB-HARNESS
1. Remove control valve with TCM. Refer to TM-203, "Control Valve with TCM and A/T Fluid Temperature
Sensor 2".
2. Disconnect transmission range switch connector and TCM connector.
3. Check continuity between transmission range switch connector (A) terminals and TCM connector (B) terminals.
4. If OK, check harness for short to ground and short to power.
5. Reinstall any part removed.
OK or NG
OK >> GO TO 5.
NG >> Replace open circuit or short to ground and short to power in harness or connectors.
Item name Condition Display value (km/h)
VHCL/S SE·A/T During driving Approximately matches the
speedometer reading.
Item Connector Terminal Continuity
Transmission range switch connector F505 8
Ye s
TCM connector F503 20
Transmission range switch connector F505 9
Ye s
TCM connector F503 17
Transmission range switch connector F505 10
Ye s
TCM connector F503 16
JSDIA1329GB
Revision: December 20092009 QX56

P0731 1GR INCORRECT RATIOTM-55
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Diagnosis ProcedureINFOID:0000000003771869
1.CHECK CAN COMMUNICATION LINE
Perform self-diagnosis. Refer to TM-32, "CONSULT-III Function (TRANSMISSION)"
.
Is a malfunction in the CAN communication indicated in the results?
YES >> Check CAN communication line. Refer to TM-39, "Diagnosis Procedure".
NO >> GO TO 2.
2.CHECK TCM POWER SUPPLY AND GROUND CIRCUIT
Check TCM power supply and ground circuit. Refer to TM-92, "Diagnosis Procedure"
.
OK or NG
OK >> GO TO 3.
NG >> Repair or replace damaged parts.
3.DETECT MALFUNCTION ITEM
Check A/T assembly harness connector pin terminals for damage or loose connection with harness connector.
OK or NG
OK >> GO TO 4.
NG >> Repair or replace damaged parts.
4.REPLACE CONTROL VALVE WITH TCM
1. Replace control valve with TCM. Refer to TM-203, "Control Valve with TCM and A/T Fluid Temperature
Sensor 2".
2. Perform TM-54, "DTC Confirmation Procedure"
.
OK or NG
OK >> INSPECTION END
NG >> Confirm malfunction phenomena by “ROAD TEST” to repair malfunctioning part. Refer to TM-190,
"Description".
Revision: December 20092009 QX56

P0732 2GR INCORRECT RATIOTM-57
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Diagnosis ProcedureINFOID:0000000003771874
1.CHECK CAN COMMUNICATION LINE
Perform self-diagnosis. Refer to TM-32, "CONSULT-III Function (TRANSMISSION)"
.
Is a malfunction in the CAN communication indicated in the results?
YES >> Check CAN communication line. Refer to TM-39, "Diagnosis Procedure".
NO >> GO TO 2.
2.CHECK TCM POWER SUPPLY AND GROUND CIRCUIT
Check TCM power supply and ground circuit. Refer to TM-92, "Diagnosis Procedure"
.
OK or NG
OK >> GO TO 3.
NG >> Repair or replace damaged parts.
3.DETECT MALFUNCTION ITEM
Check A/T assembly harness connector pin terminals for damage or loose connection with harness connector.
OK or NG
OK >> GO TO 4.
NG >> Repair or replace damaged parts.
4.REPLACE CONTROL VALVE WITH TCM
1. Replace control valve with TCM. Refer to TM-203, "Control Valve with TCM and A/T Fluid Temperature
Sensor 2".
2. Perform TM-56, "DTC Confirmation Procedure"
.
OK or NG
OK >> INSPECTION END
NG >> Confirm malfunction phenomena by “ROAD TEST” to repair malfunctioning part. Refer to TM-190,
"Description".
Revision: December 20092009 QX56

P0733 3GR INCORRECT RATIOTM-59
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Diagnosis ProcedureINFOID:0000000003771879
1.CHECK CAN COMMUNICATION LINE
Perform self-diagnosis. Refer to TM-32, "CONSULT-III Function (TRANSMISSION)"
.
Is a malfunction in the CAN communication indicated in the results?
YES >> Check CAN communication line. Refer to TM-39, "Diagnosis Procedure".
NO >> GO TO 2.
2.CHECK TCM POWER SUPPLY AND GROUND CIRCUIT
Check TCM power supply and ground circuit. Refer to TM-92, "Diagnosis Procedure"
.
OK or NG
OK >> GO TO 3.
NG >> Repair or replace damaged parts.
3.DETECT MALFUNCTION ITEM
Check A/T assembly harness connector pin terminals for damage or loose connection with harness connector.
OK or NG
OK >> GO TO 4.
NG >> Repair or replace damaged parts.
4.REPLACE CONTROL VALVE WITH TCM
1. Replace control valve with TCM. Refer to TM-203, "Control Valve with TCM and A/T Fluid Temperature
Sensor 2".
2. Perform TM-58, "DTC Confirmation Procedure"
.
OK or NG
OK >> INSPECTION END
NG >> Confirm malfunction phenomena by “ROAD TEST” to repair malfunctioning part. Refer to TM-190,
"Description".
Revision: December 20092009 QX56