Torque NISSAN TEANA 2003 Service Manual

CVT-94
DTC P0744 A/T TCC S/V FUNCTION (LOCK-UP)

DTC P0744 A/T TCC S/V FUNCTION (LOCK-UP)PFP:31940
DescriptionBCS001IP
This malfunction is detected when 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-II Reference ValueBCS001IQ
Remarks: Specification data are reference values.
On Board Diagnosis LogicBCS001IR
Diagnostic trouble code “P0744 A/T TCC S/V FNCTN” with CONSULT-II is detected under the following condi-
tions.

When CVT cannot perform lock-up even if electrical circuit is good.

When TCM compares difference value with slip revolution and detects an irregularity.
Possible CauseBCS001IS

Torque converter clutch solenoid valve

Hydraulic control circuit
DTC Confirmation ProcedureBCS001IT
CAUTION:
Always drive vehicle at a safe speed.
NOTE:
If “DTC Confirmation Procedure” has been previously performed, always turn ignition switch OFF and
wait at least 10 seconds before performing the next test.
After the repair, touch “ERASE” on “SELF-DIAG RESULTS” and then perform the following procedure to con-
firm the malfunction is eliminated.
WITH CONSULT-II
1. Turn ignition switch ON. (Do not start engine.)
2. Select “DATA MONITOR” mode for “TRANSMISSION” with
CONSULT-II.
3. Start engine and maintain the following condition for at least 30
seconds.
ACC PEDAL OPEN: More than 1.0/8
RANGE: “D” position
[Vehicle speed: Constant speed of more than 40 km/h (25
MPH)]
4. If DTC is detected go to CVT-95, "
Diagnostic Procedure" .
Item name Condition Display value
ENG SPEED SIG Engine running Closely matches the tachometer reading
PRI SPEED SEN During driving (lock-up ON) Approximately matches the engine speed
BCIA0031E

DTC P0744 A/T TCC S/V FUNCTION (LOCK-UP)
CVT-95
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Diagnostic ProcedureBCS001IU
1. CHECK INPUT SIGNALS
With CONSULT-II
1. Start engine.
2. Select “ECU INPUT SIGNALS” in “DATA MONITOR” mode for
“TRANSMISSION” with CONSULT-II.
3. Start vehicle.
4. Check if there is a great difference between “ENG SPEED SIG”
and “PRI SPEED SEN”. (Lock-up ON.)
OK or NG
OK >> GO TO 5.
NG >> GO TO 2.
2. CHECK LINE PRESSURE
Perform line pressure test. Refer to CVT-33, "
LINE PRESSURE
TEST" .
OK or NG
OK >> GO TO 3.
NG >> Repair or replace damaged parts. Refer to CVT-34,
"Judgement of Line Pressure Test" .
3. DETECT MALFUNCTIONING ITEM
Check the following:

Torque converter clutch solenoid valve. Refer to CVT-93, "Component Inspection" .

Lock-up select solenoid valve. Refer to CVT-151, "Component Inspection" .
OK or NG
OK >> GO TO 4.
NG >> Repair or replace damaged parts.
4. CHECK SECONDARY SPEED SENSOR SYSTEM AND PRIMARY SPEED SENSOR SYSTEM
Check output speed sensor (secondary speed sensor) system and input speed sensor (primary speed sensor)
system. Refer to CVT-79, "
DTC P0720 VEHICLE SPEED SENSOR CVT (SECONDARY SPEED SENSOR)" ,
CVT-74, "
DTC P0715 INPUT SPEED SENSOR CIRCUIT (PRI SPEED SENSOR)" .
OK or NG
OK >> GO TO 5.
NG >> Repair or replace damaged parts.
Item name Condition Display value
ENG SPEED SIG Engine runningClosely matches the
tachometer reading
PRI SPEED SEN During driving (lock-up ON)Approximately matches
the engine speed
SCIA2279E
SAT494G

TRANSAXLE ASSEMBLY
CVT-193
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CVT

TRANSAXLE ASSEMBLYPFP:32020
Removal and InstallationBCS001N0
COMPONENTS
1. Air breather hose 2. Rear gusset 3. CVT fluid level gauge
4. CVT fluid charging pipe 5. O-ring 6. Fluid cooler tube
7. Copper washer 8. Hose clamp 9. CVT fluid cooler hose
10. CVT fluid cooler hose 11. LH engine mounting bracket 12. LH engine mounting insulator
13. Transaxle assembly
Refer to GI section to make sure icons (symbol marks) in the figure. Refer to GI-10, "
Components" .
However, refer to the following symbols for others.
: For tightening torque, refer to CVT-196, "
INSTALLATION" .
(A) : To radiator
SCIA7899E

CVT-194
TRANSAXLE ASSEMBLY

REMOVAL
CAUTION:
The transaxle assembly itself cannot be removed from the vehicle. Remove the transaxle assembly
and engine assembly together from the vehicle.
1. Disconnect the batter cable from the negative terminal.
2. Remove engine undercover.
3. Remove exhaust front tube with power tool. Refer to EX-2, "
Removal and Installation" .
4. Remove rear plate cover. Refer to EM-145, "
Removal and
Installation" .
5. Turn crankshaft, and remove the four tightening nuts for drive
plate and torque converter.
CAUTION:
The crankshaft should be rotated clockwise, viewed from
the front of the engine.
6. Remove the four bolts in the figure.
7. Remove transaxle assembly and engine assembly together
from the vehicle. Refer to EM-223, "
Removal and Installation" .
8. Remove drive shaft. Refer to FA X - 11 , "
Removal and Installation
(LH)" .
CAUTION:
Be sure to replace the differential side oil seal with new one
at the every removal of drive shaft. Refer to CVT-187,
"Removal and Installation" .
9. Remove rear gusset.
10. Remove CVT fluid level gauge.
11. Remove CVT fluid charging pipe.
12. Remove O-ring from CVT fluid charging pipe.
13. Disconnect harness connector and wire harness.
SCIA6475E
SCIA1861E
SCIA1893E
SCIA1894E

TRANSAXLE ASSEMBLY
CVT-195
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14. Remove crankshaft position sensor (POS) (1) from engine
assembly. Refer to EM-145, "
Removal and Installation" .
CAUTION:

Do not subject it to impact by dropping or hitting it.

Do not disassemble.

Do not allow metal filings, etc., to get on the sensor's
front edge magnetic area.

Do not place in an area affected by magnetism.
15. Remove starter motor. Refer to SC-18, "
Removal and Installa-
tion" .
16. Remove CVT fluid cooler valve assembly (1). (With CVT fluid
cooler tube assembly and heater hose). Refer to CVT-189, "
CVT
Fluid Cooler Removal and Installation" .
(A): Bolt (4)
(B): Hose clamp (3)
17. Install slinger to transaxle assembly.
18. Remove LH engine mounting bracket and LH engine mounting
insulator.
19. Remove transaxle assembly fixing bolts with power tool.
20. Remove transaxle assembly from engine assembly with a hoist.
CAUTION:
Secure torque converter to prevent it from dropping.
21. Remove air breather hose. Refer to CVT-186, "
Removal and
Installation" .
22. Remove CVT fluid cooler hoses.
23. Remove fluid cooler tube.
SCIA6759E
SCIA6880E
SCIA4355E
SCIA1868E

CVT-196
TRANSAXLE ASSEMBLY

INSPECTION
Installation and Inspection of Torque Converter

After inserting a torque converter to a transaxle, be sure to
check distance “A” to ensure it is within the reference value limit.
INSTALLATION
Note the following, and install in the reverse order of removal.

Set and screw in the drive plate location guide onto the stud
bolts for the torque converter locate.

Rotate the torque converter for the locate to go down.

Rotate the drive plate for the hole of the drive plate locate to go
down.Distance “A”: 14.0 mm (0.55 in) or more
SCIA6858E
SCIA1871E
SCIA6881E
SCIA1872E

TRANSAXLE ASSEMBLY
CVT-197
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Install transaxle assembly to engine assembly with a hoist.

When installing fluid cooler tube to transaxle assembly, assem-
ble the part with the tube aligned with the rib.

When installing transaxle to the engine, attach the fixing bolts in
accordance with the following standard.

Align the positions of tightening nuts for drive plate with those of
the torque converter, and temporarily tighten the nuts. Then,
tighten the nuts with the specified torque.
CAUTION:

When turning crankshaft, turn it clockwise as viewed
from the front of the engine.

When tightening the tightening nuts for the torque con-
verter after fixing the crankshaft pulley bolts, be sure to
confirm the tightening torque of the crankshaft pulley
mounting bolts. Refer to EM-181, "
INSTALLATION" .

After converter is installed to drive plate, rotate crankshaft several turns and check to be sure
that transaxle rotates freely without binding.

Install crankshaft position sensor (POS). Refer to EM-145, "Removal and Installation" .

After completing installation, check for fluid leakage, fluid level, and the positions of CVT. Refer to CVT-13,
"Checking CVT Fluid" , CVT-178, "Adjustment of CVT Position" , CVT-179, "Checking of CVT Position" .

When replacing the CVT assembly, erase EEP ROM in TCM. Refer to CVT-9, "Precautions for TCM and
CVT Assembly Replacement" .
SCIA1868E
SCIA2285E
Bolt No. 1 2 3 4
Number of bolts 1 2 2 4
Bolt length
“ ”mm (in) 52 (2.05) 36 (1.42) 105 (4.13) 35 (1.38)
Tightening torque
N·m (kg-m, ft-lb)75 (7.7, 55) 47 (4.8, 35)
SCIA6882E
: 51 N·m (5.2 kg-m, 38 ft-lb)
SCIA1861E

CVT-198
SERVICE DATA AND SPECIFICATIONS (SDS)

SERVICE DATA AND SPECIFICATIONS (SDS)PFP:00030
General SpecificationsBCS001N1
*1: Refer to MA-14, "Fluids and Lubricants" .
Vehicle Speed at Which Gear Shifting OccursBCS001N2
Numerical value data are reference values.
CAUTION:
Lock-up clutch is engaged when vehicle speed is approximately 18 km/h (11 MPH) to 90 km/h (56 MPH).
Stall SpeedBCS001N3
Line PressureBCS001N4
*1 : Reference values
Solenoid ValvesBCS001N5
Applied modelVQ35DE engine
2WD
CVT modelRE0F09A
CVT assembly Model code number 1XD14
Transmission gear ratioD range Variable
Reverse 1.766
Final drive 5.173
Recommended fluid NISSAN CVT Fluid NS-2*1
Fluid capacity 10.2 liter (9 Imp qt)
CAUTION:

Use only Genuine NISSAN CVT Fluid NS-2. Do not mix with other fluid.

Using CVT fluid other than Genuine NISSAN CVT Fluid NS-2 will deteriorate in driveability and CVT durability, and may
damage the CVT, which is not covered by the warranty.
Engine type Throttle position Shift patternEngine speed (rpm)
At 40 km/h (25 MPH) At 60 km/h (37 MPH)
VQ35DE8/8 “D” position 3,100 - 4,200 4,200 - 5,300
2/8 “D” position 1,200 - 2,000 1,300 - 2,100
Stall speed 2,700 - 3,250 rpm
Engine Engine speedLine pressure kPa (bar, kg/cm2 , psi)
“R”, “D” positions
VQ35DEAt idle speed 750 (7.50, 7.65, 108.8)
At stall speed
5,700 (57.00, 58.14, 826.5)*
1
Name Resistance (Approx.) Terminal
Pressure control solenoid valve B (Secondary
pressure solenoid valve)
3 - 9 Ω3
Pressure control solenoid valve A (Line pressure
solenoid valve)2
Torque converter clutch solenoid valve12
Lock-up select solenoid valve 6 - 19 Ω13

SERVICE DATA AND SPECIFICATIONS (SDS)
CVT-199
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CVT Fluid Temperature SensorBCS001N6
Primary Speed SensorBCS001N7
Secondary Speed SensorBCS001N8
Removal and InstallationBCS001N9
Item name Condition CONSULT-II “DATA MONITOR” (Approx.) Resistance (Approx.)
ATF TEMP SEN20°C (68°F) 2.0 V 6.5 kΩ
80°C (176°F) 1.0 V 0.9 kΩ
Name Condition Data (Approx.)
Primary speed sensor When driving [“M1” position, 20 km/h (12 MPH)]. 700 Hz
Name Condition Data (Approx.)
Secondary speed sensor When driving [“D” position, 20 km/h (12 MPH)]. 400 Hz
Distance between end of converter housing and torque converter 14.0 mm (0.55 in) or more

EC-16
[QR]
PRECAUTIONS


After performing each TROUBLE DIAGNOSIS, perform DTC
Confirmation Procedure or Overall Function Check.
The DTC should not be displayed in the DTC Confirmation
Procedure if the repair is completed. The Overall Function
Check should be a good result if the repair is completed.

When measuring ECM signals with a circuit tester, never
allow the two tester probes to contact.
Accidental contact of probes will cause a short circuit and
damage the ECM power transistor.

Do not use ECM ground terminals when measuring input/
output voltage. Doing so may result in damage to the ECM's
transistor. Use a ground other than ECM terminals, such as
the ground.

Do not operate fuel pump when there is no fuel in lines.

Tighten fuel hose clamps to the specified torque.
SAT652J
SEF348N
PBIB2259E