2010 INFINITI QX56 lock

TM-138
< SYMPTOM DIAGNOSIS >
SYSTEM SYMPTOM
48Others Shift point is low in “D”
position.
ON vehicle1. Output speed sensor and vehicle speed signal
TM-50
,
TM-76
2. Accelerator pedal position sensor TM-71
3. CAN communication line LAN-4
4. Control valve with TCMTM-172
49Judder occurs during
lock-up. ON vehicle1. Fluid level and state
TM-148
2. Engine speed signal TM-53
3. Input speed sensorTM-48
4. Output speed sensor and vehicle speed signalTM-50,
TM-76
5. Accelerator pedal position sensor TM-71
6. CAN communication line LAN-4
7. Torque converter clutch solenoid valveTM-65
8. Control valve with TCMTM-172
OFF vehicle 9. Torque converter TM-172
50Strange noise in “R”
position. ON vehicle
1. Fluid level and state
TM-148
2. Engine speed signal TM-53
3. CAN communication line LAN-4
4. Control valve with TCMTM-172
OFF vehicle5. Torque converter
TM-172
6. Oil pump assemblyTM-172
7. Gear systemTM-172
8. High and low reverse clutchTM-237
9. Reverse brakeTM-172
51Strange noise in “N”
position. ON vehicle
1. Fluid level and state
TM-148
2. Engine speed signal TM-53
3. CAN communication line LAN-4
4. Control valve with TCMTM-172
OFF vehicle5. Torque converter
TM-1726. Oil pump assemblyTM-172
7. Gear systemTM-172
52Strange noise in “D”
position. ON vehicle
1. Fluid level and state
TM-148
2. Engine speed signal TM-53
3. CAN communication line LAN-4
4. Control valve with TCMTM-172
OFF vehicle5. Torque converter
TM-172
6. Oil pump assemblyTM-172
7. Gear systemTM-172
8. Forward brake (Parts behind drum support is impossible to
perform inspection by disassembly. Refer to TM-8
, TM-9. TM-172
No. Items
Symptom Condition Diagnostic ItemReference
page
Revision: April 20092010 QX56

PRECAUTIONSTM-143
< PRECAUTION >
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PRECAUTION
PRECAUTIONS
Precaution for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT
PRE-TENSIONER"
INFOID:0000000005148716
The Supplemental Restraint System such as “AIR BAG” and “SEAT BELT PRE-TENSIONER”, used along
with a front seat belt, helps to reduce the risk or severi ty of injury to the driver and front passenger for certain
types of collision. This system includes seat belt switch inputs and dual stage front air bag modules. The SRS
system uses the seat belt switches to determine the front air bag deployment, and may only deploy one front
air bag, depending on the severity of a collision and w hether the front occupants are belted or unbelted.
Information necessary to service the system safely is included in the SR and SB section of this Service Man-
ual.
WARNING:
• To avoid rendering the SRS inoper ative, which could increase the risk of personal injury or death in
the event of a collision which would result in air bag inflation, all maintenance must be performed by
an authorized NISSAN/INFINITI dealer.
• Improper maintenance, including in correct removal and installation of the SRS, can lead to personal
injury caused by unintentional act ivation of the system. For removal of Spiral Cable and Air Bag
Module, see the SR section.
• Do not use electrical test equipm ent on any circuit related to the SRS unless instructed to in this
Service Manual. SRS wiring harnesses can be identi fied by yellow and/or orange harnesses or har-
ness connectors.
Precaution for On Board Diagnosis (OBD) System of A/T and EngineINFOID:0000000005148717
The ECM has an on board diagnostic system . It will light up the malfunction indicator lamp (MIL) to warn the
driver of a malfunction causing emission deterioration.
CAUTION:
• Be sure to turn the ignition switch “OFF” and disconnect the negative battery cable before any repair or inspection work. The open/short circuit of related switches, sen sors, solenoid valves, etc. Will
cause the MIL to light up.
• Be sure to connect and lock the connectors secure ly after work. A loose (unlocked) connector will
cause the MIL to light up due to an open circuit. (Be sure the connector is free from water, grease,
dirt, bent terminals, etc.)
• Be sure to route and secure the harnesses properly after work. Interference of the harness with a
bracket, etc. May cause the MIL to li ght up due to a short circuit.
• Be sure to connect rubber tubes properly afte r work. A misconnected or disconnected rubber tube
may cause the MIL to light up due to a malfunction of the EGR system or fuel injection system, etc.
• Be sure to erase the unnecessary malfunction informa tion (repairs completed) from the TCM and
ECM before returning the vehicle to the customer.
PrecautionINFOID:0000000005148718
NOTE:
If any malfunctions occur in th e RE5R05A model transmission, repl ace the entire transmission assem-
bly.
• Before connecting or disconn ecting the TCM harness connec-
tor, turn ignition switch “O FF” and disconnect negative bat-
tery cable. Because battery voltage is applied to TCM even if
ignition switch is turned “OFF”.
SEF289H
Revision: April 20092010 QX56

PRECAUTIONSTM-145
< PRECAUTION >
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Always perform the procedure on TM-30, "OBD-II Diagnostic Trouble Code (DTC)" to complete the
repair and avoid unnecessary blinking of the MIL.
For details of OBD-II, refer to TM-30
.
• Certain systems and components, especially those related to OBD, may use the new style slide-
locking type harness connector. For descrip tion and how to disconnect, refer to PG-64
.
Revision: April 20092010 QX56

ROAD TESTTM-161
< ON-VEHICLE MAINTENANCE >
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3.CHECK SHIFT-UP D2 → D3
Press down the accelerator pedal about half way and inspect if the vehicle shifts up (D2 → D3) at the appropri-
ate speed.
• Refer to TM-265, "
Vehicle Speed at Which Gear Shifting Occurs".
With CONSULT-III
Read the gear position, throttle degree of opening, and vehicle speed.
Does the A/T shift-up D2
→ D3 at the correct speed?
YES >> GO TO 4.
NO >> Record the malfunction, GO TO 4.
4.CHECK SHIFT-UP D3 → D4
Press down the accelerator pedal about half way and inspect if the vehicle shifts up (D3 → D4) at the appropri-
ate speed.
• Refer to TM-265, "
Vehicle Speed at Which Gear Shifting Occurs".
With CONSULT-III
Read the gear position, throttle degree of opening, and vehicle speed.
Does the A/T shift-up D3
→ D4 at the correct speed?
YES >> GO TO 5.
NO >> Record the malfunction, GO TO 5.
5.CHECK SHIFT-UP D4 → D5
Press down the accelerator pedal about half way and inspect if the vehicle shifts up (D4 → D5) at the appropri-
ate speed.
• Refer to TM-265, "
Vehicle Speed at Which Gear Shifting Occurs".
With CONSULT-III
Read the gear position, throttle degree of opening, and vehicle speed.
Does the A/T shift-up D4
→ D5 at the correct speed?
YES >> GO TO 6.
NO >> Record the malfunction, GO TO 6.
6.CHECK LOCK-UP
When releasing accelerator pedal from D5, check lock-up from D5 to L/U.
• Refer to TM-265, "
Vehicle Speed at Which Gear Shifting Occurs".
With CONSULT-III
Select “TCC SOLENOID 0.00A” with the “MAIN SIGNAL” mode for A/T.
Does it lock-up?
YES >> GO TO 7.
NO >> Record the malfunction, GO TO 7.
7.CHECK LOCK-UP HOLD
Does it maintain lock-up status?
YES >> GO TO 8.
NO >> Record the malfunction, GO TO 8.
8.CHECK LOCK-UP RELEASE
Check lock-up cancellation by depressing brake pedal lightly to decelerate. With CONSULT-III
Select “TCC SOLENOID 0.00A” with the “MAIN SIGNAL” mode for A/T.
Does lock-up cancel?
YES >> GO TO 9.
NO >> Record the malfunction, GO TO 9.
9.CHECK SHIFT-DOWN D5 → D4
Decelerate by pressing lightly on the brake pedal.
Revision: April 20092010 QX56

ROAD TESTTM-163
< ON-VEHICLE MAINTENANCE >
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Check engine brake.
Does engine braking effectively reduce speed in 1
1 position?
YES >> Check malfunction phenomena to repair or replace malfunctioning part. Refer to TM-121, "Symp-
tom Table".
NO >> 1. Record the malfunction. 2. Check malfunction phenomena to repair or replace malfunctioning part. Refer to TM-121,
"Symptom Table".
Vehicle Speed When Shifting GearsINFOID:0000000005148734
Refer to TM-265, "Vehicle Speed at Which Gear Shifting Occurs".
Vehicle Speed When Performing and Releasing Complete Lock-upINFOID:0000000005148735
Refer to TM-266, "Vehicle Speed at Which Lock-up Occurs/Releases".
Revision: April 20092010 QX56

TM-164
< ON-VEHICLE MAINTENANCE >
A/T POSITION
A/T POSITION
Adjustment of A/T PositionINFOID:0000000005148736
1. Loosen nut of control cable.
2. Place the manual lever and selector lever in “P” position.
3. Push the control cable in the direction shown with a force of 9.8
N (1kg, 2.2 lb), and release it. This is in the natural state, tighten
control cable nut to specifications.
Checking of A/T PositionINFOID:0000000005148737
With the selector lever in the “P” position, turn t he ignition switch to the ON position with the engine OFF.
Confirm that the following conditions apply.
• The selector lever can be shifted from the “P” position only when the brake pedal is depressed.
• The selector lever stops at each position with the f eel of engagement when it is moved through all the posi-
tions.
• There is no excessive effort, sticking, noise or rattle.
• The actual position of the selector lever matches the position shown by the shift position indicator and the A/
T body.
• The back-up lamps illuminate only when the selector lever is placed in the “R” position.
• The back-up lamps do not illuminate when the selector lever is pushed against the “R” position when in the “P” or “N” position.
• The engine can only be started with the select or lever in the “P” and “N” positions.
• The A/T is locked completely when in the “P” position. Control cable nut : 14.5 N·m (1.5 kg-m, 11 ft-lb)
SCIA6532E
Revision: April 20092010 QX56

SHIFT CONTROL SYSTEMTM-165
< ON-VEHICLE REPAIR >
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ON-VEHICLE REPAIR
SHIFT CONTROL SYSTEM
A/T Shift Selector Removal and InstallationINFOID:0000000005148738
REMOVAL
1. Remove A/T finisher. Refer to IP-19, "Removal and Installation".
2. Disconnect A/T shift selector control cable.
3. Disconnect A/T shift selector harness connector.
4. Remove control device assembly.
INSTALLATION
Installation is in reverse order of removal. Be careful of the following:
• After installation is completed, adjust and check A/T position. Refer to TM-164, "
Adjustment of A/T Position",
TM-164, "
Checking of A/T Position".
1. Select lever knob 2. A/T console finisher3. A/T shift selector assembly
4. Position lamp 5. A/T shift selector control cable 6. Lock plate
LCIA0348E
Revision: April 20092010 QX56

TM-166
< ON-VEHICLE REPAIR >
AIR BREATHER HOSE
AIR BREATHER HOSE
Removal and InstallationINFOID:0000000005402587
REMOVAL and INSTALLATION
2WD
CAUTION:
• Install air breather hose with paint mark at upper side.
• When installing the air breather hose, do not crush or block by folding or bending the hose.
• When inserting the hose to the tran smission tube, be sure to insert it fully until its end reaches the
tube bend portion.
• Make sure clip is securely installed to bracket.
REMOVAL
AWDIA0554GB
A. Set air breather hose with
paint mark at upper side B. Clip (set securely to bracket)
Revision: April 20092010 QX56