Condition NISSAN TEANA 2008 Service Manual

SERVICE DATA AND SPECIFICATIONS (SDS)
TM-175
< SERVICE DATA AND SPECIFICATIONS (SDS) [CVT: RE0F09B]
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Solenoid ValvesINFOID:0000000003849119
CVT Fluid Temperature SensorINFOID:0000000003849120
Primary Speed SensorINFOID:0000000003849121
Secondary Speed SensorINFOID:0000000003849122
Step MotorINFOID:0000000003849123
Torque ConverterINFOID:0000000003849124
Name Resistance (Approx.)
Pressure control solenoid valve B (secondary pressure solenoid valve)
3.0 – 9.0 Ω Pressure control solenoid valve A (line pressure solenoid valve)
Torque converter clutch solenoid valve
Lock-up select solenoid valve6.0 – 19.0 Ω
Name ConditionCONSULT-III “Data Monitor”
(Approx.)Resistance (Approx.)
CVT fluid temperature sensorWhen CVT fluid temperature is 20°C (68°F) 1.9 – 2.2 V 6.5 kΩ
When CVT fluid temperature is 80°C (176°F) 0.8 – 1.1 V 0.9 kΩ
Name Condition Data (Approx.)
Primary speed sensorWhen driving at 20 km/h (12 MPH) in “L” position, use the
CONSULT-III pulse frequency measuring function.680 Hz
Name Condition Data (Approx.)
Secondary speed sensorWhen driving at 20 km/h (12 MPH) in “D” position, use the
CONSULT-III pulse frequency measuring function.400 Hz
Name Resistance (Approx.)
Ste p mo tor A15.0 Ω
Ste p mo tor B15.0 Ω
Ste p mo tor C15.0 Ω
Ste p mo tor D15.0 Ω
Distance between end of converter housing and torque converter 14.0 mm (0.55 in)

TM-176
< BASIC INSPECTION >[CVT: RE0F10A]
DIAGNOSIS AND REPAIR WORK FLOW
BASIC INSPECTION
DIAGNOSIS AND REPAIR WORK FLOW
Work FlowINFOID:0000000003806344
INTRODUCTION
The TCM receives signals from the vehicle speed sensor and PNP switch. Then it provides shift control or
lock-up control via CVT solenoid valves.
The TCM also communicates with the ECM by means of signals
sent from sensing elements used with the OBD-related parts of the
CVT system for malfunction-diagnostic purposes. The TCM is capa-
ble of diagnosing malfunctioning parts while the ECM can store mal-
functions in its memory.
Input and output signals must always be correct and stable in the
operation of the CVT system. The CVT system must be in good
operating condition and be free of valve seizure, solenoid valve mal-
function, etc.
It is much more difficult to diagnose a malfunction that occurs inter-
mittently rather than continuously. Most intermittent malfunctions are
caused by poor electric connections or improper wiring. In this case,
careful checking of suspected circuits may help prevent the replace-
ment of good parts.
A visual check only may not find the cause of the malfunctions. A
road test with CONSULT-III (or GST) or a circuit tester connected
should be performed. Follow the “DETAILED FLOW”.
Before undertaking actual checks, take a few minutes to talk with a
customer who approaches with a driveability complaint. The cus-
tomer can supply good information about such malfunctions, espe-
cially intermittent ones. Find out what symptoms are present and
under what conditions they occur. A “Diagnostic Work Sheet” as
shown on the example (Refer to TM-177
) should be used.
Start your diagnosis by looking for “conventional” malfunctions first.
This will help troubleshoot driveability malfunctions on an electroni-
cally controlled engine vehicle.
Also check related Service Bulletins.
DETAILED FLOW
1.COLLECT THE INFORMATION FROM THE CUSTOMER
Get the detailed information from the customer about the symptom (the condition and the environment when
the incident/malfunction occurred) using the diagnosis work sheet. Refer to TM-177, "
Diagnostic Work Sheet".
>> GO TO 2.
2.CHECK SYMPTOM 1
Check the following items based on the information obtained from the customer.
 Fail-safe. Refer to TM-283, "
Fail-safe".
 CVT fluid inspection. Refer to TM-304, "
Inspection".
 Line pressure test. Refer to TM-308, "
Inspection and Judgment".
SAT631IB
SAT632I
SEF234G

DIAGNOSIS AND REPAIR WORK FLOW
TM-177
< BASIC INSPECTION >[CVT: RE0F10A]
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 Stall test. Refer to TM-306, "Inspection and Judgment".
>> GO TO 3.
3.CHECK DTC
1. Check DTC.
2. Perform the following procedure if DTC is detected.
 Record DTC.
 Erase DTC. Refer to TM-202, "
Diagnosis Description".
Is any DTC detected?
YES >> GO TO 4.
NO >> GO TO 5.
4.PERFORM DIAGNOSTIC PROCEDURE
Perform “Diagnostic Procedure” for the displayed DTC.
>> GO TO 5.
5.PERFORM DTC CONFIRMATION PROCEDURE
Perform “DTC CONFIRMATION PROCEDURE” for the displayed DTC.
Is DTC detected?
YES >> GO TO 4.
NO >> GO TO 6.
6.CHECK SYMPTOM 2
Confirm the symptom described by the customer.
Is any malfunction present?
YES >> GO TO 7.
NO >> INSPECTION END
7.ROAD TEST
Perform “ROAD TEST”. Refer to TM-310, "
Description".
>> GO TO 8.
8.CHECK SYMPTOM 3
Confirm the symptom described by the customer.
Is any malfunction present?
YES >> GO TO 2.
NO >> INSPECTION END
Diagnostic Work SheetINFOID:0000000003806345
INFORMATION FROM CUSTOMER
KEY POINTS
WHAT..... Vehicle & CVT model
WHEN..... Date, Frequencies
WHERE..... Road conditions
HOW..... Operating conditions, Symptoms
Customer name MR/MS Model & Year VIN
Trans. Model Engine Mileage
Malfunction Date Manuf. Date In Service Date
Frequencyo Continuouso Intermittent ( times a day)

HYDRAULIC CONTROL SYSTEM
TM-187
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HYDRAULIC CONTROL SYSTEM
System DiagramINFOID:0000000003806354
System DescriptionINFOID:0000000003806355
The hydraulic control mechanism consists of the oil pump directly driven by the engine, the hydraulic control
valve that controls line pressure and transmission, and the input signal line.
LINE PRESSURE AND SECONDARY PRESSURE CONTROL
 When an input torque signal equivalent to the engine driving force is transmitted from the ECM to the TCM,
the TCM controls the line pressure solenoid valve and secondary pressure solenoid valve.
 Line pressure solenoid valve activates pressure regulator valve, and line pressure from oil pump is adjusted
for the optimum driving condition. Secondary pressure is controlled by lowering line pressure.
JPDIA0733GB
SCIA1846E

TM-188
< FUNCTION DIAGNOSIS >[CVT: RE0F10A]
HYDRAULIC CONTROL SYSTEM
Normal Control
Optimize the line pressure and secondary pressure, depending on driving conditions, on the basis of the throt-
tle position, the engine speed, the primary pulley (input) revolution speed, the secondary pulley (output) revo-
lution speed, the brake signal, the PNP switch signal, the lock-up signal, the voltage, the target gear ratio, the
fluid temperature, and the fluid pressure.
Feedback Control
For the normal fluid control and the select fluid control, secondary pressure is detected for feedback control by
using a secondary pressure sensor to set a high-precision secondary pressure.
Component Parts LocationINFOID:0000000003809652
*: Control valve assembly is included in CVT assembly.
NOTE:
The following components are included in control valve assembly (8).
 CVT fluid temperature sensor
1. Sport mode switch 2. Shift position indicator 3. SPORT indicator lamp
4. TCM 5. Secondary speed sensor 6. PNP switch
7. Primary speed sensor 8.
Control valve assembly
*9. CVT unit connector
10. Accelerator pedal position sensor
A. Center console B. Combination meter C. Engine room LH
D. CVT assembly E. Accelerator pedal, upper
JPDIA0746ZZ

HYDRAULIC CONTROL SYSTEM
TM-189
< FUNCTION DIAGNOSIS >[CVT: RE0F10A]
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 Torque converter clutch solenoid valve
 Line pressure solenoid valve
 Step motor
 ROM assembly
 Secondary pressure sensor
 Secondary pressure solenoid valve
 Lock-up select solenoid valve
Component DescriptionINFOID:0000000003806357
TRANSAXLE ASSEMBLY
EXCEPT TRANSAXLE ASSEMBLY
Name Function
Torque converter regulator valve Optimizes the supply pressure for the torque converter depending on driving conditions.
Pressure regulator valve Optimizes the discharge pressure from the oil pump depending on driving conditions.
TCC control valve Activates or deactivates the lock-up.
 Locks-up smoothly by opening lock-up operation excessively.
Shift control valveControls inflow/outflow of line pressure from the primary pulley depending on the stroke
difference between the stepping motor and the primary pulley.
Secondary valve Controls the line pressure from the secondary pulley depending on operating conditions.
Clutch regulator valve Adjusts the clutch operating pressure depending on operating conditions.
Manual valveTransmits the clutch operating pressure to each circuit in accordance with the selected
position.
Select control valve Engages forward clutch, reverse brake smoothly depending on select operation.
Select switch valveThe select switch valve enables to select engagement/disengagement of lock-up clutch
and that of forward clutch and reverse clutch.
TCC solenoid valveTM-230
Secondary pressure solenoid valveTM-240
Line pressure solenoid valveTM-234
Step motorTM-261
Lock-up select solenoid valveTM-258
Primary speed sensorTM-218
Secondary speed sensorTM-222
PNP switchTM-213
Primary pulley
TM-186
Secondary pulley
Forward clutch
Torque converter
Name Function
TCMJudges the vehicle driving status according to the signal from each sensor and controls
the non-step transmission mechanism properly.
Accelerator pedal position sensorTM-252

TM-190
< FUNCTION DIAGNOSIS >[CVT: RE0F10A]
CONTROL SYSTEM
CONTROL SYSTEM
System DiagramINFOID:0000000003806358
System DescriptionINFOID:0000000003806359
The CVT senses vehicle operating conditions through various sensors. It always controls the optimum shift
position and reduces shifting and lock-up shocks.
TCM FUNCTION
The function of the TCM is to:
 Receive input signals sent from various switches and sensors.
 Determine required line pressure, shifting point, and lock-up operation.
 Send required output signals to the step motor and the respective solenoids.
INPUT/OUTPUT SIGNAL OF TCM
JPDIA0744GB
SENSORS (or SIGNALS)
⇒TCM
⇒ACTUATORS
PNP switch
Accelerator pedal position signal
Closed throttle position signal
Engine speed signal
CVT fluid temperature sensor
Vehicle speed signal
Sport mode switch signal
Stop lamp switch signal
Primary speed sensor
Secondary speed sensor
Secondary pressure sensorShift control
Line pressure control
Primary pressure control
Secondary pressure control
Lock-up control
Engine brake control
Vehicle speed control
Fail-safe control
Self-diagnosis
CONSULT-III communication
line
Duet-EA control
CAN system
On board diagnosisSte p m ot or
Torque converter clutch solenoid
valve
Lock-up select solenoid valve
Line pressure solenoid valve
Secondary pressure solenoid
valve
SPORT indicator lamp
Shift position indicator

SHIFT CONTROL SYSTEM
TM-197
< FUNCTION DIAGNOSIS >[CVT: RE0F10A]
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SHIFT CONTROL SYSTEM
System DiagramINFOID:0000000003806366
NOTE:
The gear ratio is set for each position separately.
System DescriptionINFOID:0000000003806367
In order to select the gear ratio that can obtain the driving force in accordance with driver's intention and the
vehicle condition, TCM monitors the driving conditions, such as the vehicle speed and the throttle position and
selects the optimum gear ratio, and determines the gear change steps to the gear ratio. Then TCM sends the
command to the step motor, controls the inflow/outflow of line pressure from the primary pulley to determine
the position of the moving-pulley and controls the gear ratio.
“D” POSITION
Shifting over all the ranges of gear ratios from the lowest to the high-
est.
SPORT MODE
Use this position for the improved engine braking.
“L” POSITION
By limiting gear range to the lowest position, the strong driving force
and the engine brake can be secured.
DOWNHILL ENGINE BRAKE CONTROL (AUTO ENGINE BRAKE CONTROL)
When a downhill slope is detected with the accelerator pedal released, the engine brake will be strengthened
up by downshifting so as not to accelerate the vehicle more than necessary.
JPDIA0745GB
SCIA1953E
SCIA1955E

TM-200
< FUNCTION DIAGNOSIS >[CVT: RE0F10A]
SHIFT LOCK SYSTEM
SHIFT LOCK SYSTEM
System DescriptionINFOID:0000000003806370
The shift lever it cannot be shifted from the “P” position unless the
brake pedal is depressed while the ignition switch is set to ON. The
shift lock is unlocked by turning the shift lock solenoid ON when the
ignition switch is set to ON, the park switch is turned ON (selector
lever is in “P” position), and the stop lamp switch is turned ON (brake
pedal is depressed) as shown in the operation chart in the figure.
Therefore, the shift lock solenoid receives no ON signal and the shift
lock remains locked if all of the above conditions are not fulfilled.
(However, selector operation is allowed if the shift lock release but-
ton is pressed.)
SHIFT LOCK OPERATION at “P” POSITION
When Brake Pedal Is Not Depressed (No Selector Operation Allowed)
The shift lock solenoid (A) is turned OFF (not energized) and the
solenoid rod (B) is extended with the spring when the brake pedal is
not depressed (no selector operation allowed) with the ignition
switch ON.
The connecting lock lever (C) is located at the position shown in the
figure when the solenoid rod is extended. It prevents the movement
of the detent rod (D). The selector lever cannot be shifted from the P
position for this reason.
When Brake Pedal Is Depressed (Shift Operation Allowed)
The shift lock solenoid (A) is turned ON (energized) when the brake
pedal is depressed with the ignition switch ON. The solenoid rod (B)
is compressed by the electromagnetic force. The connecting lock
lever (C) rotates when the solenoid rod is activated. Therefore, the
detent rod (D) can be moved. The selector lever can be shifted to
other positions for this reason.
“P” POSITION HOLD MECHANISM (IGNITION SWITCH LOCK)
JPDIA0588GB
JPDIA0612ZZ
JPDIA0613ZZ

SHIFT LOCK SYSTEM
TM-201
< FUNCTION DIAGNOSIS >[CVT: RE0F10A]
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The shift lock solenoid (A) is not energized when the ignition switch
is in any position other than ON. in this condition, the shift mecha-
nism is locked and “P” position is held. The operation cannot be per-
formed from “P” position if the brake pedal is depressed with the
ignition switch ON when the operation system of shift lock solenoid is
malfunctioning. However, the lock lever (B) is forcibly rotated and the
shift lock is released when the shift lock release button (C) is
pressed from above. Then the selector operation from “P” position
can be performed.
CAUTION:
Use the shift lock release button only when the selector lever cannot be operated even if the brake
pedal is depressed with the ignition switch ON.
Component Parts LocationINFOID:0000000003806371
Component DescriptionINFOID:0000000003806372
SHIFT LOCK
D : Detent rodJPDIA0614ZZ
1. Stop lamp switch
A. Shift lock release button B. Shift lock solenoid C. Park position switch
JPDIA0753ZZ
Component Function
Shift lock solenoid
Refer to TM-267, "
Description"
Lock lever
Detent rod
Park position switch
Shift lock release button