2004 INFINITI QX56 manual transmission

AT-244
ON-VEHICLE SERVICE
Revision: August 20072004 QX56
13. Remove bolts A, B and C from control valve with TCM.
14. Remove control valve with TCM from transmission case.
CAUTION:
When removing, be careful with the manual valve notch and
manual plate height. Remove it vertically.
15. Remove A/T fluid temperature sensor 2 with bracket from con-
trol valve with TCM.
16. Remove bracket from A/T fluid temperature sensor 2.
17. Remove O-ring from A/T assembly harness connector.
Bolt symbol Length mm (in) Number of bolts
A 42 (1.65) 5
B 55 (2.17) 6
C 40 (1.57) 1
SCIA5139E
SCIA5142E
SCIA5301E
SCIA5264E
SCIA5155E

AT-266
OVERHAUL
Revision: August 20072004 QX56
7. Parking pawl 8. Pawl shaft 9. Self-sealing bolt
10. Bracket 11. Seal ring 12. Needle bearing
13. Revolution sensor 14. Parking gear 15. Output shaft
16. Bearing race 17. Needle bearing 18. Manual plate
19. Parking rod 20. Manual shaft oil seal 21. Manual shaft
22. O-ring 23. Band servo anchor end pin 24. Detent spring
25. Spacer 26. Seal rings 27. Snap ring
28. O-ring 29. Transmission case 30. Retaining pin
31. Return spring 32. O-ring 33. Servo assembly
34. Snap ring 35. Control valve with TCM 36. Bracket
37. A/T fluid temperature sensor 2 38. Oil pan gasket 39. Oil pan
40. Magnet 41. Drain plug 42. Drain plug gasket
43. Oil pan mounting bolt

AT-268
OVERHAUL
Revision: August 20072004 QX56
7. Pawl shaft 8. Bracket 9. Self-sealing bolt
10. Seal ring 11. Needle bearing 12. Gasket
13. Revolution sensor 14. Parking gear 15. Output shaft
16. Bearing race 17. Needle bearing 18. Manual plate
19. Parking rod 20. Manual shaft oil seal 21. Manual shaft
22. O-ring 23. Band servo anchor end pin 24. Detent spring
25. Spacer 26. Seal ring 27. Snap ring
28. O-ring 29. Transmission case 30. Retaining pin
31. Return spring 32. O-ring 33. Servo assembly
34. Snap ring 35. Control valve with TCM 36. Bracket
37. A/T fluid temperature sensor 2 38. Oil pan gasket 39. Oil pan
40. Magnet 41. Drain plug 42. Drain plug gasket
43. Oil pan mounting bolt

DISASSEMBLY
AT-281
D
E
F
G
H
I
J
K
L
MA
B
AT
Revision: August 20072004 QX56
36. Remove control valve with TCM from transmission case.
CAUTION:
When removing, be careful with transmission assembly ter-
minal connector and the manual valve notch and manual
plate height.Remove it vertically.
37. Remove A/T fluid temperature sensor 2 with bracket from con-
trol valve with TCM.
38. Remove bracket from A/T fluid temperature sensor 2.
39. Remove O-ring from A/T assembly harness connector.
40. Remove rear extension assembly (2WD models) or adapter case assembly (4WD models) according to
the following procedures.
SCIA5308E
SCIA5301E
SCIA5264E
SCIA5155E

DISASSEMBLY
AT-287
D
E
F
G
H
I
J
K
L
MA
B
AT
Revision: August 20072004 QX56
57. Use a pin punch (4mm dia. commercial service tool) to knock
out retaining pin.
58. Remove manual shaft retaining pin with pliers.
59. Remove manual plate (with parking rod) from manual shaft.
60. Remove parking rod from manual plate.
61. Remove manual shaft from transmission case.
62. Remove manual shaft oil seals using a flat-bladed screwdriver.
CAUTION:
Be careful not to scratch transmission case.
SCIA2328E
SCIA5218E
SCIA5219E
SCIA5220E
SCIA5355E

ASSEMBLY
AT-309
D
E
F
G
H
I
J
K
L
MA
B
AT
Revision: August 20072004 QX56
ASSEMBLYPFP:00000
Assembly (1)UCS002JQ
1. As shown in the right figure illustration, use a drift [commercial
service tool φ22 mm (0.87 in)] to drive manual shaft oil seals into
the transmission case until it is flush.
CAUTION:

Apply ATF to manual shaft oil seals.

Do not reuse manual shaft oil seals.
2. Install detent spring and spacer in transmission case. Tighten
mounting bolt to the specified torque. Refer to AT-261, "
Compo-
nents" .
3. Install manual shaft to transmission case.
4. Install parking rod to manual plate.
5. Install manual plate (with parking rod) to manual shaft.
SCIA5256E
SCIA5248E
SCIA5220E
SCIA5219E

AT-310
ASSEMBLY
Revision: August 20072004 QX56
6. Install retaining pin into the manual plate and manual shaft.
a. Fit pinhole of the manual plate to pinhole of the manual shaft
with a pin punch.
b. Use a hammer to tap the retaining pin into the manual plate.
CAUTION:

Drive retaining pin to 2±0.5 mm over the manual
plate.

Do not reuse retaining pin.
7. Install retaining pin into the transmission case and manual shaft.
a. Fit pinhole of the transmission case to pinhole of the manual
shaft with a pin punch.
b. Use a hammer to tap the retaining pin into the transmission
case.
CAUTION:

Drive retaining pin to 5±1 mm over the transmis-
sion case.

Do not reuse retaining pin.
8. Install O-rings to servo assembly.
CAUTION:

Do not reuse O-rings.

Apply petroleum jelly to O-rings.
9. Install return spring to servo assembly.
10. Install servo assembly in transmission case.
11. Using snap ring pliers, install snap ring to transmission case.
12. Install D-rings in reverse brake piston.
CAUTION:

Do not reuse D-rings.

Apply ATF to D-rings.
SCIA5297E
SCIA2427E
SCIA2334E
SCIA2333E
SCIA5340E

EC-16Revision: August 2007
PRECAUTIONS
2004 QX56
PRECAUTIONSPFP:00001
Precautions for Supplemental Restraint System (SRS) “AIR BAG” and “SEAT
BELT PRE-TENSIONER”
UBS00GZ5
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 severity 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 whether the front occupants are belted or unbelted.
Information necessary to service the system safely is included in the SRS and SB section of this Service Man-
ual.
WAR NIN G:

To avoid rendering the SRS inoperative, 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 per-
formed by an authorized NISSAN/INFINITI dealer.

Improper maintenance, including incorrect removal and installation of the SRS, can lead to per-
sonal injury caused by unintentional activation of the system. For removal of Spiral Cable and Air
Bag Module, see the SRS section.

Do not use electrical test equipment on any circuit related to the SRS unless instructed to in this
Service Manual. SRS wiring harnesses can be identified by yellow and/or orange harnesses or
harness connectors.
On Board Diagnostic (OBD) System of Engine and A/TUBS00GZ6
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, sensors, solenoid valves,
etc. will cause the MIL to light up.

Be sure to connect and lock the connectors securely after work. A loose (unlocked) connector will
cause the MIL to light up due to the open circuit. (Be sure the connector is free from water, grease,
dirt, bent terminals, etc.)

Certain systems and components, especially those related to OBD, may use a new style slide-
locking type harness connector. For description and how to disconnect, refer to PG-68, "
HAR-
NESS CONNECTOR" .

Be sure to route and secure the harnesses properly after work. The interference of the harness
with a bracket, etc. may cause the MIL to light up due to the short circuit.

Be sure to connect rubber tubes properly after work. A misconnected or disconnected rubber tube
may cause the MIL to light up due to the malfunction of the EVAP system or fuel injection system,
etc.

Be sure to erase the unnecessary malfunction information (repairs completed) from the ECM and
TCM (Transmission control module) before returning the vehicle to the customer.
PrecautionUBS00GZ7

Always use a 12 volt battery as power source.

Do not attempt to disconnect battery cables while engine is
running.

Before connecting or disconnecting the ECM harness con-
nector, turn ignition switch OFF and disconnect negative
battery cable. Failure to do so may damage the ECM
because battery voltage is applied to ECM even if ignition
switch is turned OFF.

Before removing parts, turn ignition switch OFF and then
disconnect battery ground cable.
SEF 2 89 H