2009 INFINITI QX56 battery

SYSTEM SYMPTOMTM-149
< SYMPTOM DIAGNOSIS >
CEF
G H
I
J
K L
M A
B
TM
N
O P
Without CONSULT-III
1. Turn ignition switch “ON”.(Do not start engine)
2. Check voltage between A/T shift selector harness connector ter- minal and ground.
OK or NG
OK >> GO TO 3.
NG >> Repair or replace damaged parts.
3.CHECK A/T FLUID LEVEL
Check the A/T fluid level. Refer to TM-179, "Checking the A/T Fluid
(ATF)".
OK or NG
OK >> GO TO 4.
NG >> Refill ATF.
4.CHECK CONTROL CABLE
Check the control cable.
 Refer to TM-195, "Checking of A/T Position"
.
OK or NG
OK >> GO TO 5.
NG >> Adjust control cable. Refer to TM-195, "Adjustment of A/
T Position".
5.CHECK A/T FLUID CONDITION
1. Remove oil pan. Refer to TM-201, "Oil Pan"
.
Monitor item Condition Display value
1 POSITION SWWhen setting the selector
lever to "1" position.
ON
When setting selector le-
ver to other positions. OFF
Item Connector No. Terminal No. Condition Data
(Approx.)
1st position switch M203 7 - Ground When setting
the selector le-
ver to "1" posi-
tion.
0V
When setting
selector lever
to other posi-
tions. Battery voltage
AWDIA0811ZZ
SAT638A
LCIA0345E
Revision: December 20092009 QX56

SYSTEM SYMPTOMTM-151
< SYMPTOM DIAGNOSIS >
CEF
G H
I
J
K L
M A
B
TM
N
O P
Without CONSULT-III
1. Turn ignition switch “ON”.(Do not start engine)
2. Check voltage between A/T shift selector harness connector ter- minal and ground.
OK or NG
OK >> GO TO 3.
NG >> Repair or replace damaged parts.
3.CHECK A/T FLUID LEVEL
Check the A/T fluid level. Refer to TM-179, "Checking the A/T Fluid
(ATF)".
OK or NG
OK >> GO TO 4.
NG >> Refill ATF.
4.CHECK CONTROL CABLE
Check the control cable.
 Refer to TM-195, "Checking of A/T Position"
.
OK or NG
OK >> GO TO 5.
NG >> Adjust control cable. Refer to TM-195, "Adjustment of A/
T Position".
5.CHECK A/T FLUID CONDITION
1. Remove oil pan. Refer to TM-201, "Oil Pan"
.
Monitor item Condition Display value
1 POSITION SWWhen setting the selector
lever to "1" position.
ON
When setting selector le-
ver to other positions. OFF
Item Connector No. Terminal No. Condition Data
(Approx.)
1st position switch M203 7 - Ground When setting
the selector le-
ver to "1" posi-
tion.
0V
When setting
selector lever
to other posi-
tions. Battery voltage
AWDIA0811ZZ
SAT638A
LCIA0345E
Revision: December 20092009 QX56

TM-174
< PRECAUTION >
PRECAUTIONS
PRECAUTION
PRECAUTIONS
Precaution for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT
PRE-TENSIONER"
INFOID:0000000005880175
The Supplemental Restraint System such as “A IR 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 inopera tive, 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 NISS AN/INFINITI dealer.
 Improper maintenance, including in correct removal and installation of the SRS, can lead to personal
injury caused by unintent ional activation of the system. For re moval of Spiral Cable and Air Bag
Module, see the SR section.
 Do not use electrical test equipmen t 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.
PRECAUTIONS WHEN USING POWER TOOLS (AIR OR ELECTRIC) AND HAMMERS
WARNING:
 When working near the Airbag Diagnosis Sensor Unit or other Airbag System sensors with the Igni-
tion ON or engine running, DO NOT use air or electri c power tools or strike near the sensor(s) with a
hammer. Heavy vibration could activate the sensor( s) and deploy the air bag(s), possibly causing
serious injury.
 When using air or electric power tools or hammers , always switch the Ignition OFF, disconnect the
battery, and wait at least 3 minu tes before performing any service.
Precaution Necessary for Steering W heel Rotation After Battery Disconnect
INFOID:0000000005880176
NOTE:
 This Procedure is applied only to models with Intelli gent Key system and NATS (NISSAN ANTI-THEFT SYS-
TEM).
 Remove and install all control units after disconnecting both battery cables with the ignition knob in the
″LOCK ″ position.
 Always use CONSULT-III to perform self-diagnosis as a part of each function inspection after finishing work.
If DTC is detected, perform trouble diagnosis according to self-diagnostic results.
For models equipped with the Intelligent Key system and NATS, an electrically controlled steering lock mech-
anism is adopted on the key cylinder.
For this reason, if the battery is disconnected or if the battery is discharged, the steering wheel will lock and
steering wheel rotation will become impossible.
If steering wheel rotation is required when battery pow er is interrupted, follow the procedure below before
starting the repair operation.
OPERATION PROCEDURE
1. Connect both battery cables. NOTE:
Supply power using jumper cables if battery is discharged.
2. Use the Intelligent Key or mechanical key to turn the ignition switch to the ″ACC ″ position. At this time, the
steering lock will be released.
3. Disconnect both battery cables. The steering lock will remain released and the steering wheel can be
rotated.
4. Perform the necessary repair operation.
Revision: December 20092009 QX56

PRECAUTIONSTM-175
< PRECAUTION >
CEF
G H
I
J
K L
M A
B
TM
N
O P
5. When the repair work is completed, return the ignition switch to the ″LOCK ″ position before connecting
the battery cables. (At this time, the steering lock mechanism will engage.)
6. Perform a self-diagnosis check of al l control units using CONSULT-III.
Precaution for On Board Diagnosis (OBD) System of A/T and EngineINFOID:0000000003772014
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 sw itch “OFF” and disconnect the negati ve battery cable before any repair
or inspection work. The open/short circuit of related switches, sensors, 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:0000000003772015
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”.
 After performing each TROUBL E DIAGNOSIS, perform “DTC
(Diagnostic Trouble Code) CONFIRMATION PROCEDURE”.
If the repair is completed the DTC should not be displayed in the
“DTC CONFIRMATION PROCEDURE”.
 Always use the specified brand of ATF. Refer to MA-12, "Fluids and Lubricants"
.
 Use paper rags not cloth rags during work.
 After replacing the ATF, dispose of the waste oil using the methods prescribed by law, ordinance, etc.
 Before proceeding with disassembly, thoroughly clean the outsi de of the transmission. It is important to pre-
vent the internal parts from becoming contaminated by dirt or other foreign matter.
 Disassembly should be done in a clean work area.
 Use lint-free cloth or towels for wiping parts clean. Common shop rags can leave fibers that could interfere
with the operation of the transmission.
 Place disassembled parts in order for easier and proper assembly.
SEF289H
SEF217U
Revision: December 20092009 QX56

CONTROL VALVE WITH TCMTM-203
< ON-VEHICLE REPAIR >
CEF
G H
I
J
K L
M A
B
TM
N
O P
CONTROL VALVE WITH TCM
Control Valve with TCM and A/T Fluid Temperature Sensor 2INFOID:0000000004219688
COMPONENTS
CONTROL VALVE WITH TCM REMOVAL AND INSTALLATION
Removal
1. Disconnect negative battery terminal. Refer to PG-77, "Removal and Installation".
2. Drain A/T fluid. Refer to TM-181, "Changing the A/T Fluid (ATF)"
.
3. Disconnect A/T assembly harness connector.
1. Transmission 2. Snap ring 3. Sub-harness
4. Control valve with TCM 5. Bracket 6. A/T fluid temperature sensor 2
7. Oil pan gasket 8. Brackets 9. Oil pan bolt
10. Oil pan 11. Magnet 12. Drain plug
13. Drain plug gasket 14. A/T assembly harness connector 15. O-ring
AWDIA0024ZZ
Revision: December 20092009 QX56

CONTROL VALVE WITH TCMTM-209
< ON-VEHICLE REPAIR >
CEF
G H
I
J
K L
M A
B
TM
N
O P
11. Connect A/T fluid temperature sensor 2 connector (A).
12. Securely fasten terminal cord assembly and A/T fluid tempera- ture sensor 2 harness with terminal clips
 : Terminal clip
13. Connect output speed sensor connector (1).
14. Securely fasten output speed sensor harness with terminal clip.
15. Install oil pan to transmission case. Refer to TM-201, "Oil Pan"
.
16. Pull up A/T assembly harness connector. CAUTION:
Do not damage connector.
17. Install snap ring to A/T assembly harness connector.
18. Connect A/T assembly harness connector.
19. Connect the negative battery terminal.
20. Refill the A/T with fluid and check the fluid level and for fluid leakage. Refer to TM-179, "Checking the A/T Fluid (ATF)"
.
REMOVAL AND INSTALLATION OF A/ T FLUID TEMPERATURE SENSOR 2
Removal
1. Disconnect negative battery terminal. Refer to PG-77, "Removal and Installation".
2. Remove oil pan and oil pan gasket. Refer to TM-201, "Oil Pan"
.
SCIA8124E
JSDIA1319ZZ
SCIA5038E
SCIA5039E
Revision: December 20092009 QX56

CONTROL VALVE WITH TCMTM-211
< ON-VEHICLE REPAIR >
CEF
G H
I
J
K L
M A
B
TM
N
O P
2. Install A/T fluid temperature sens or 2 (with bracket) in control
valve with TCM. Tighten A/T flui d temperature sensor 2 bolt to
the specified torque. Refer to TM-203, "Control Valve with TCM
and A/T Fluid Temperature Sensor 2".
CAUTION:
Adjust bolt hole of bracket to bolt hole of control valve with
TCM.
3. Connect A/T fluid temperature sensor 2 connector (A).
4. Securely fasten A/T fluid temperature sensor 2 harness with ter- minal clip .
5. Install oil pan to transmission case. Refer to TM-201, "Oil Pan"
.
6. Connect the negative battery terminal. Refer to PG-77, "Removal and Installation"
.
7. Refill the A/T with fluid and check the fluid level and for fluid leakage. Refer to TM-179, "Checking the A/T
Fluid (ATF)".
SCIA5253E
SCIA8125E
Revision: December 20092009 QX56

TM-214
< REMOVAL AND INSTALLATION >
TRANSMISSION ASSEMBLY
REMOVAL AND INSTALLATION
TRANSMISSION ASSEMBLY
Removal and Installation (2WD)INFOID:0000000005892371
COMPONENTS
REMOVAL
CAUTION:
When removing the A/T assembly from engine, first remove the crankshaft position sensor (POS) from
the A/T assembly.
Be careful not to damage sensor edge.
1. Disconnect the battery negative terminal. Refer to PG-77, "Removal and Installation"
.
2. Remove A/T fluid indicator.
3. Remove engine under cover using power tool.
1. A/T fluid indicator pipe 2. A/T fluid indicator 3. O-ring
4. Transmission assembly 5. Fluid cooler tube 6. A/T cross member
7. Insulator 8. Copper washers
AWDIA0553GB
Revision: December 20092009 QX56