2011 INFINITI QX56 lock

SYSTEM SYMPTOMTM-173
< SYMPTOM DIAGNOSIS > [7AT: RE7R01B]
C
EF
G H
I
J
K L
M A
B
TM
N
O P
*: Parts behind drum support is impossible to perform inspection by disassembly. Refer to TM-16, "TRANSMISSION : Cross-Sectional
View".
Func-
tion
trouble
Poor
pow-
er
trans-
mis-
sion
Slip With selector lever
in “D” position, ac-
celeration is ex-
tremely poor.
112 1 12
With selector lever
in “R” position, ac-
celeration is ex-
tremely poor. 11 11112
While starting off
by accelerating in
1GR, engine rac-
es. 112 1112
While accelerating
in 2GR, engine
races. 1 2 1 112
While accelerating
in 3GR, engine
races. 1 2 11 12
While accelerating
in 4GR, engine
races. 1 1 11 12
While accelerating
in 5GR, engine
races. 1 111 12
While accelerating
in 6GR, engine
races. 111112
While accelerating
in 7GR, engine
races. 1 111 2
Lock-up 1 1 1 2
No creep at all. 11211111 11121
Extremely large
creep. 1
Symptom
Diagnostic item
Oil pump
Torque converter
Low brake*
Front brake
High and low reverse clutch
Input clutch
Direct clutch
2346 brake
Reverse brake
1st one-way clutch
2nd one-way clutch
gear
control valve
Parking component
TM-270
TM-211TM-211TM-211TM-292TM-282TM-294TM-270TM-211TM-211TM-287TM-211TM-182TM-211
Revision: 2010 May2011 QX56

TM-176
< REMOVAL AND INSTALLATION >[7AT: RE7R01B]
A/T SHIFT SELECTOR
REMOVAL AND INSTALLATION
A/T SHIFT SELECTOR
Exploded ViewINFOID:0000000006226891
Removal and InstallationINFOID:0000000006226892
REMOVAL
1. Shift the selector lever to “N” position.
2. Remove knob cover (A) below selector lever downward.
3. Pull lock pin (1) out of selector lever knob (2).
4. Remove selector lever knob.
5. Remove center console assembly. Refer to
IP-25, "
Removal and
Installation".
CAUTION:
When disconnecting connector from shift position switch,
never twist or apply an excessi ve load to the connector.
6. Remove cluster lid C lower. Refer to IP-14, "
Removal and Instal-
lation".
7. Disconnect A/T shift selector connector and main harness from A/T shift selector assembly.
8. Shift the selector lever to “P” position.
9. Remove control cable from A/T shift selector assembly. Refer to TM-178, "
Removal and Installation".
10. Remove A/T shift selector assembly.
1. Lock pin 2. Selector lever knob 3. A/T shift selector assembly
4. Bracket 5. Adapter
Refer to GI-4, "
Components" for symbols in the figure.
JSDIA1554GB
JSDIA1676ZZ
Revision: 2010 May2011 QX56

A/T SHIFT SELECTORTM-177
< REMOVAL AND INSTALLATION > [7AT: RE7R01B]
C
EF
G H
I
J
K L
M A
B
TM
N
O P
INSTALLATION
Note the following, and install in the reverse order of removal.
 When installing control cable (1) to A/T shift selector assembly (2), check that control cable is fully pressed in with the ribbed (A) sur-
face facing upward.
 Refer to the followings when installing the selector lever knob to
the A/T shift selector assembly.
1. Install the lock pin to the selector lever knob.
2. Insert the shift lever knob into the shift lever until it clicks. CAUTION:
 Install it straight, and n ever tap or apply any shock to
install it.
 Never press selector button.
Inspection and AdjustmentINFOID:0000000006226893
INSPECTION AFTER INSTALLATION
Check A/T position after adjusting A/T position. Refer to TM-101, "Inspection".
ADJUSTMENT AFTER INSTALLATION
Adjust A/T position. Refer to TM-101, "Adjustment".
JPDIA0609ZZ
Revision: 2010 May2011 QX56

TM-178
< REMOVAL AND INSTALLATION >[7AT: RE7R01B]
CONTROL CABLE
CONTROL CABLE
Exploded ViewINFOID:0000000006226894
Removal and InstallationINFOID:0000000006226895
REMOVAL
1. Remove center console assembly . Refer to
IP-25, "Removal and Installation".
2. Remove cluster lid C cover and instrument center finisher LH. Refer to IP-14, "
Removal and Installation".
3. Shift selector lever in “P” position.
4. Remove control cable from A/T shift selector assembly.
5. Remove control cable from manual lever and control cable mounting bracket.
1. Control cable 2. A/T shift selector assembly 3. Lock plate
4. Manual lever 5. Washer 6. Lock plate
7. Bracket 8. A/T assembly
A. Retainer
Refer to GI-4, "
Components" for symbols in the figure.
JSDIA1589GB
Revision: 2010 May2011 QX56

TM-196
< REMOVAL AND INSTALLATION >[7AT: RE7R01B]
OUTPUT SPEED SENSOR
4. Remove clips (1).
5. Remove oil pan (2) and oil pan gasket.
6. Support A/T assembly with a transmission jack.
CAUTION:
When setting transmission j ack, place wooden blocks to
prevent from damaging control valve & TCM and transmis-
sion case.
7. Remove rear engine mounting cross member with power tool. Refer to TM-205, "
2WD : Exploded View".
8. Remove engine mounting insulator (rear). Refer to TM-205, "
2WD : Exploded View".
9. Remove tightening bolts for rear extension assembly and trans- mission case.
10. Tap rear extension assembly with a soft hammer (A). CAUTION:
Be careful not to damage rear extension case.
11. Remove rear extension assembly (with needle bearing) from transmission case.
: Vehicle front
: Oil pan mounting bolt
1 : Bracket
A: Bolt
B : Self-sealing bolt
JSDIA1591ZZ
JSDIA1845ZZ
JPDIA0027ZZ
SCIA3431E
Revision: 2010 May2011 QX56

TM-206
< UNIT REMOVAL AND INSTALLATION >[7AT: RE7R01B]
TRANSMISSION ASSEMBLY
8. Remove exhaust front tube (RH and LH) and main muffler. Refer to
EX-5, "Exploded View".
9. Separate propeller shaft assembly. Refer to DLN-144, "
Removal and Installation".
NOTE:
Cap or plug opening to prevent fluid from spilling.
10. Remove front under cover with a power tool. Refer to EXT-25, "
Removal and Installation".
11. Remove protector A and B. Refer to SCS-32, "
FRONT TUBE ASSEMBLY : Exploded View".
12. Remove front suspension rear cross member.
13. Remove crankshaft position sensor (POS) from A/T assembly. Refer to EM-106, "
Exploded View".
CAUTION:
 Never subject it to impact by dropping or hitting it.
 Never disassemble.
 Never allow metal filings, etc. to ge t on the sensor's front edge magnetic area.
 Never place in an area affected by magnetism.
14. Remove rear plate cover. Refer to EM-54, "
Exploded View".
15. Turn crankshaft, and remove the four tight ening bolts for drive plate and torque converter.
CAUTION:
When turning the crankshaft, turn it clockw ise as viewed from the front of the engine.
16. Remove A/T fluid cooler tube A and D. Refer to TM-202, "
Exploded View".
NOTE:
Cap or plug openings to prevent fluid from spilling.
17. Remove bolts fixing A/T assembly to engine with a power tool.
18. Disconnect connector from A/T assembly.
19. Remove harness and brackets from A/T assembly.
20. Remove A/T assembly from the vehicle. CAUTION:
 Secure torque converter to prevent it from dropping.
 Secure A/T assembly to a transmission jack.
21. Remove air breather hose and bracket. Refer to TM-199, "
2WD
: Exploded View".
22. Remove manual lever from A/T assembly. Refer to TM-178,
"Exploded View".
INSTALLATION
Note the following, and Install in the reverse order of removal.
 Check fitting of dowel pin ( ).
ATA0025D
JSDIA1597ZZ
Revision: 2010 May2011 QX56

TRANSMISSION ASSEMBLYTM-207
< UNIT REMOVAL AND INSTALLATION > [7AT: RE7R01B]
C
EF
G H
I
J
K L
M A
B
TM
N
O P
 When installing A/T assembly to the engine, be sure to check dimension “A” to ensure it is within the reference value limit.
 When installing A/T assembly to the engine, attach the fixing bolts in accordance with the following standard.
*: Tightening the bolt with bracket (and washer). Refer to TM-199, "2WD : Exploded View".
 Align the positions of tightening bolts for drive plate with those of the torque converter, and temporarily
tighten the bolts. Then, tighten the bolts with the specified torque.
CAUTION:
 When turning crankshaft, turn it clockwise as viewed from the front of the engine.
 When tightening the tightening bolts for the torq ue converter after fixing the crankshaft pulley
bolts, be sure to confirm the tightening torque of the crankshaft pulley mounting bolts. Refer to
EM-62, "
Removal and Installation".
 Rotate crankshaft several turns and check to be sure that A/T rotates freely without binding after
converter is installed to drive plate.
2WD : Inspection and AdjustmentINFOID:0000000006233265
INSPECTION AFTER INSTALLATION
 Check A/T fluid leakage. Refer to TM-175, "Inspection".
 Check A/T position after adjusting A/T position. Refer to TM-101, "
Inspection".
ADJUSTMENT AFTER INSTALLATION
 Adjust A/T fluid level. Refer to TM-95, "Adjustment".
 Adjust A/T position. Refer to TM-101, "
Adjustment".
 Perform decel G sensor calibration when replacing A/T assembly. Refer to TM-91, "
Special Repair Require-
ment".
4WD
B: Scale
C : Straightedge
Dimension “A” : Refer to TM-297, "Torque Convert-
er".
JPDIA0042ZZ
Bolt symbol A
Insertion direction A/T assembly to engine
Number of bolts 9
Bolt length “L”
mm (in) 70 (2.76)
Tightening torque
N·m (kg-m, ft-lb) 113 (12, 83)
JSDIA1598ZZ
Revision: 2010 May2011 QX56

TRANSMISSION ASSEMBLYTM-209
< UNIT REMOVAL AND INSTALLATION > [7AT: RE7R01B]
C
EF
G H
I
J
K L
M A
B
TM
N
O P
12. Remove crankshaft position sensor (POS) from A/T assembly. Refer to EM-106, "Exploded View".
CAUTION:
 Never subject it to impact by dropping or hitting it.
 Never disassemble.
 Never allow metal filings, etc. to get on the sensor's front edge magnetic area.
 Never place in an area affected by magnetism.
13. Remove rear plate cover. Refer to EM-54, "
Exploded View".
14. Turn crankshaft, and remove the four tightening bolts for drive plate and torque converter. CAUTION:
When turning the crankshaft, turn it clock wise as viewed from the front of the engine.
15. Remove A/T fluid cooler tube A and D. Refer to TM-202, "
Exploded View".
NOTE:
Cap or plug openings to prevent fluid from spilling.
16. Support transfer assembly with a transmission jack.
17. Remove bolts fixing A/T assembly to engine with a power tool.
18. Disconnect connectors from A/T assembly and transfer assembly.
19. Remove harness and brackets from A/T assembly and transfer assembly.
20. Remove A/T assembly with transfer assembly from the vehicle. CAUTION:
 Secure torque converter to prevent it from dropping.
 Secure A/T assembly to a transmission jack.
21. Remove air breather hoses and bracket. Refer to TM-200, "
4WD
: Exploded View" (for A/T) and DLN-121, "Removal and Installa-
tion" (for transfer).
22. Remove manual lever from A/T assembly. Refer to TM-178,
"Exploded View".
23. Remove transfer assembly from A/T assembly with power tool. Refer to DLN-121, "
Removal and Installation".
NOTE:
Cap or plug opening to prevent fluid from spilling.
INSTALLATION
Note the following, and Install in the reverse order of removal.
 Check fitting of dowel pin ( ).
 When installing A/T assembly to the engine, be sure to check dimension “A” to ensure it is within the reference value limit.
SCIA2203E
JSDIA1597ZZ
B: Scale
C : Straightedge
Dimension “A” : Refer to TM-297, "Torque Convert-
er".
JPDIA0042ZZ
Revision: 2010 May2011 QX56