2008 INFINITI FX35 torque

DTC P0740 TORQUE CONVERTER CLUTCH SOLENOID VALVE
AT-125
< SERVICE INFORMATION >
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2. Select “MAIN SIGNALS” in “DATA MONITOR” mode for “TRANSMISSION” with CONSULT-III.
3. Start engine.
4. Read out the value of “TCC SOLENOID” while driving.
OK or NG
OK >> GO TO 4.
NG >> GO TO 2.
2.CHECK TCM POWER SUPPLY AND GROUND CIRCUIT
Check TCM power supply and ground circuit. Refer to AT-160
.
OK or NG
OK >> GO TO 3.
NG >> Repair or replace damaged parts.
3.DETECT MALFUNCTIONING ITEM
Check A/T assembly harness connector pin terminals for damage or loose connection with harness connector.
OK or NG
OK >> Replace the control valve with TCM. Refer to AT-215, "Control Valve with TCM and A/T Fluid Tem-
perature Sensor 2".
NG >> Repair or replace damaged parts.
4.CHECK DTC
Perform AT-124, "
DTC Confirmation Procedure".
OK or NG
OK >> INSPECTION END
NG >> GO TO 2.
Item name Condition Display value (Approx.)
TCC SOLENOID Slip lock-up is active 0.2 - 0.4 A
Lock-up is active 0.4 - 0.6 A
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C

AT-126
< SERVICE INFORMATION >
DTC P0744 A/T TCC S/V FUNCTION (LOCK-UP)
DTC P0744 A/T TCC S/V FUNCTION (LOCK-UP)
DescriptionINFOID:0000000001327215
This malfunction is detected when the A/T does not shift into 5th gear position or the torque converter clutch
does not lock-up as instructed by the TCM. This is not only caused by electrical malfunction (circuits open or
shorted) but also by mechanical malfunction such as control valve sticking, improper solenoid valve operation,
etc.
CONSULT-III Reference Value in Data Monitor ModeINFOID:0000000001327216
On Board Diagn osis LogicINFOID:0000000001327217
Diagnostic trouble code “P0744 A/T TCC S/V FNCTN” wit h CONSULT-III or 3rd judgement flicker without
CONSULT-III is detected under the following conditions.
 When A/T cannot perform lock-up even if electrical circuit is good.
 When TCM detects as irregular by comparing difference value with slip rotation.
Possible CauseINFOID:0000000001327218
 Harness or connectors (Solenoid circuit is open or shorted.)
 Torque converter clutch solenoid valve
 Hydraulic control circuit
DTC Confirmation ProcedureINFOID:0000000001327219
CAUTION:
Always drive vehicle at a safe speed.
NOTE:
If “DTC Confirmation Procedure” has been previously performed, alw ays turn ignition switch OFF and
wait at least 10 seconds before performing the next test.
After the repair, perform the following proc edure to confirm the malfunction is eliminated.
WITH CONSULT-III
1. Start engine.
2. Select “DATA MONITOR” mode for “TRANSMISSION” with CONSULT-III.
3. Drive vehicle and maintain the following conditions for at least 30 consecutive seconds. ACCELE POSI: More than 1.0/8
SLCT LVR POSI: “D” position
TCC SOLENOID: 0.4 - 0.6 A
VEHICLE SPEED: 80 km/h (50 MPH) or more
Driving location: Driving the vehicle uphill (increased engine load) will help maintain the driving
conditions required for this test.
4. If DTC is detected, go to AT-126, "
Diagnosis Procedure".
WITH GST
Follow the procedure “WITH CONSULT-III”.
Diagnosis ProcedureINFOID:0000000001327220
1.CHECK INPUT SIGNAL
With CONSULT-III
1. Turn ignition switch ON.
2. Select “MAIN SIGNALS” in “DATA MONITO R” mode for “TRANSMISSION” with CONSULT-III.
3. Start the engine.
Item name Condition Display value (Approx.)
TCC SOLENOID Slip lock-up is active 0.2 - 0.4 A
Lock-up is active 0.4 - 0.6 A
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C

SHIFT CONTROL SYSTEMAT-207
< SERVICE INFORMATION >
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1. Disconnect lower lever of control device and control rod.
2. Remove manual lever from A/T assembly.
3. Remove control rod from vehicle.
INSTALLATION
Install in reverse order of removal. Be careful of the following:
 After installation is completed, adjust and check A/T position. Refer to AT-207, "
Adjustment of A/T Position"
and AT-207, "Checking of A/T Position".
Adjustment of A/T PositionINFOID:0000000001327385
1. Loosen nut of control rod.
2. Place PNP switch and selector lever in “P” position.
3. While pressing lower lever toward rear of vehicle (in “P” position
direction), tighten nut to the specified torque. Refer to AT-206,
"Control Rod Removal and Installation".
CAUTION:
Do not push the bracket.
Checking of A/T PositionINFOID:0000000001327386
1. Place selector lever in “P” posit ion, and turn ignition switch ON.
2. Check selector lever can be shifted to other than “P” position when brake pedal is depressed. Also check
selector lever can be shifted from “P” position only when brake pedal is depressed.
3. Move the selector lever and check for excessive effort, sticking, noise or rattle.
4. Check the selector lever stops at each position wit h the feel of engagement when it is moved through all
the positions. Check whether or not t he actual position the selector lever is in matches the position shown
by the shift position indicator and the transmission body.
5. The method of operating the lever to individual positions cor- rectly should be as shown in the figure.
6. When selector button is pressed in “P”, “R”, or “N” position with-
out applying forward/backward force to selector lever, check but-
ton operation for sticking.
7. Check the back-up lamps illuminate only when lever is placed in the “R” position. Check the back-up lamps does not illuminate
when selector lever is pushed against “R” position in the “P” or
“N” position.
8. Check the engine can only be started with the selector lever in the “P” and “N” positions. (With selector lever in the “P” position,
engine can be started even when selector lever is moved for-
ward and backward.)
9. Check transmission is locked completely in “P” position.
10. When selector lever is set to manual shift gate, check manual mode is displayed on combination meter. Shift selector lever to “+” and “-” sides, and check set shift position changes. (Only while a vehicle is oper-
ating.)
SCIA5736E
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SCIA7465E
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
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AT-220
< SERVICE INFORMATION >
ON-VEHICLE SERVICE
3. Connect TCM connectors.
4. Install O-ring in A/T assembly harness connector.CAUTION:
 Do not reuse O-ring.
 Apply ATF to O-ring.
5. Install A/T fluid temperature sensor 2 to bracket.
6. Install A/T fluid temperature sensor 2 (with bracket) in control valve with TCM, and then tighten A/T fluid temperature sensor 2
mounting bolt to the specified torque. Refer to "COMPO-
NENTS".
CAUTION:
Adjust bolt hole of bracket to bolt hole of control valve with
TCM.
7. Install control valve with TCM in transmission case. CAUTION:
 Make sure that turbine revolu tion sensor securely installs
turbine revolution sensor hole.
 Hang down revolution senso r harness toward outside so
as not to disturb installation of control valve with TCM.
 Adjust A/T assembly harness co nnector of control valve
with TCM to terminal hole of transmission case.
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3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C

ON-VEHICLE SERVICEAT-221
< SERVICE INFORMATION >
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 Assemble it so that manual valve cutout is engaged with manual plate projection.
8. Install bolts A, B and C in control valve with TCM.  : Vehicle front
9. Tighten bolt 1, 2 and 3 temporarily to prevent dislocation. After that tighten them in order (1 → 2 → 3), and then tighten other
bolts to the specified torque. Refer to "COMPONENTS".
 : Vehicle front
10. Connect A/T fluid temperature sensor 2 connector (1).
11. Securely fasten terminal cord assembly and A/T fluid tempera- ture sensor 2 harness with terminal clips ( ).
SCIA5142E
Bolt symbol Length mm (in) Number of bolts
A 42 (1.65) 5
B 55 (2.17) 6
C 40 (1.57) 1
SCIA8074E
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3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
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ON-VEHICLE SERVICEAT-223
< SERVICE INFORMATION >
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c. Tighten oil pan mounting bolts to the specified torque in numeri- cal order shown in the figure after temporarily tightening them.
Refer to "COMPONENTS".
CAUTION:
Do not reuse oil pan mounting bolts.
16. Install drain plug to oil pan, and then tighten drain plug to the specified torque. Refer to "COMPONENTS".
CAUTION:
Do not reuse drain plug gasket.
17. Pull up A/T assembly harness connector. CAUTION:
Be careful not to damage connector.
18. Install snap ring to A/T assembly harness connector.
19. Connect A/T assembly harness connector.
20. Connect heated oxygen sensor 2 harness connector.
21. Install front cross bar. Refer to FSU-6, "
Removal and Installa-
tion".
22. Pour ATF into A/T assembly. Refer to AT- 11 , "
Changing A/T
Fluid".
23. Connect the battery cable to the negative terminal.
A/T FLUID TEMPERATURE SENSOR 2 REMOVAL AND INSTALLATION
Removal
1. Disconnect the battery cabl e from the negative terminal.
2. Remove front cross bar. Refer to FSU-6, "
Removal and Installation".
3. Disconnect heated oxygen sensor 2 harness connector.
4. Drain ATF through drain plug.
5. Remove bracket (1) (VK45DE), clips (2), oil pan (3) and oil pan gasket.
 : Vehicle front
 : Bolt (22)
 Drain plug (4)
SCIA4113E
SCIA5038E
SCIA5039E
SCIA8128E
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C

ON-VEHICLE SERVICEAT-225
< SERVICE INFORMATION >
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1. Install A/T fluid temperature sensor 2 to bracket.
2. Install A/T fluid temperature sens or 2 (with bracket) in control
valve with TCM, and then tighten A/T fluid temperature sensor 2
mounting bolt to the specified torque. Refer to "COMPO-
NENTS".
3. Connect A/T fluid temperature sensor 2 connector (1).
4. Securely fasten A/T fluid temperature sensor 2 harness with ter- minal clip ( ).
5. Install oil pan to transmission case.
a. Install oil pan gasket to oil pan. CAUTION:
 Do not reuse oil pan gasket.
 Install it in the direction to align hole positions.
 Completely remove all moisture , oil and old gasket, etc. from oil pan mounting surface.
b. Install oil pan (3) (with oil pan gasket), clips (2) and brackets (1) (VK45DE) to transmission case.
 : Vehicle front
 : Bolt (22)
CAUTION:
 Install it so that drain plug (4) comes to the position as
shown in the figure.
 Be careful not to pinch harnesses.
 Completely remove all moistu re, oil and old gasket, etc.
from oil pan mounting surface.
SCIA5264E
SCIA5302E
SCIA8076E
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3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C

AT-226
< SERVICE INFORMATION >
ON-VEHICLE SERVICE
c. Tighten oil pan mounting bolts to the specified torque in numeri-cal order shown in the figure after temporarily tightening them.
Refer to "COMPONENTS".
CAUTION:
Do not reuse oil pan mounting bolts.
6. Install drain plug to oil pan, and then tighten drain plug to the specified torque. Refer to "COMPONENTS".
CAUTION:
Do not reuse drain plug gasket.
7. Connect heated oxygen sensor 2 harness connector.
8. Install front cross bar. Refer to FSU-6, "
Removal and Installa-
tion".
9. Pour ATF into A/T assembly. Refer to AT- 11 , "
Changing A/T Fluid".
10. Connect the battery cable to the negative terminal.
Parking Component (2WD Models Only)INFOID:0000000001327394
COMPONENTS
REMOVAL
SCIA4113E
1. Rear oil seal 2. Rear extension 3. Parking actuator support
4. Parking pawl 5. Return spring 6. Pawl shaft
7. Self-sealing bolt 8. Seal ring 9. Parking gear
10. Output shaft 11. Bearing race 12. Needle bearing
Refer to GI section to make sure icons (symbol marks) in the figure. Refer to GI-8, "
Component".
However, refer to the following symbol for others.
*: Apply Genuine Anaerobic Liquid Gasket or equivalent. Refer to GI-44, "Recommended Chemical Product and Sealant".
SCIA7433E
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C