NISSAN TEANA 2008 Service Manual

TM-8
Step Motor .............................................................338Torque Converter ..................................................338

DIAGNOSIS AND REPAIR WORK FLOW
TM-9
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BASIC INSPECTION
DIAGNOSIS AND REPAIR WORK FLOW
Work FlowINFOID:0000000003848914
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-10
) 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-10, "
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-120, "
Fail-safe".
 CVT fluid inspection. Refer to TM-142, "
Inspection".
 Line pressure test. Refer to TM-146, "
Inspection and Judgment".
SAT631IB
SAT632I
SEF234G

TM-10
< BASIC INSPECTION >[CVT: RE0F09B]
DIAGNOSIS AND REPAIR WORK FLOW
 Stall test. Refer to TM-144, "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-35, "
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. Repair detected items.
>> 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-148, "
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:0000000003848915
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)

DIAGNOSIS AND REPAIR WORK FLOW
TM-11
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DIAGNOSTIC WORK SHEET
Symptomso Vehicle does not move. (o Any positiono Particular position)
o No shift
o Lock-up malfunction
o Shift shock or slip (o N → Do N → Ro Lock-upo Any drive position)
o Noise or vibration
o No pattern select
o Others
()
Malfunction Indicator (MI)o Continuously lito Not lit
1o Read the item on cautions concerning fail-safe and understand the customer's complaint.TM-120
2o CVT fluid inspection, stall test and line pressure test
o CVT fluid inspection
TM-142
o Leak (Repair leak location.)
o Sta te
o Amount
o Stall test
TM-144
TM-146
o Torque converter one-way clutch
o Reverse brake
o Forward clutch
o Ste el be lto Engine
o Line pressure low
o Primary pulley
o Secondary pulley
o Line pressure inspection - Suspected part:
3o Perform self-diagnosis.
TM-37
Enter checks for detected items.
4o Perform road test.TM-148
4-1. Check before engine is started TM-148
4-2. Check at idleTM-149
4-3. Cruise testTM-150
o Check malfunction phenomena to repair or replace malfunctioning part after completing all road tests.TM-123
5o Drive vehicle to check that the malfunction phenomenon has been resolved.
6o Erase the results of the self-diagnosis from the TCM and the ECM.

TM-12
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INSPECTION AND ADJUSTMENT
INSPECTION AND ADJUSTMENT
ADDITIONAL SERVICE WHEN REPLACING CONTROL UNIT
ADDITIONAL SERVICE WHEN REPLACING CONTROL UNIT : Precaution for TCM
and CVT Assembly Replacement
INFOID:0000000003848916
CAUTION:
• Check if new data (Unit ID) are entered correctly after replacing CVT assembly and erasing data in
TCM. (Connect CONSULT-III, and then turn ignition switch OFF.)
 When replacing CVT assembly or TCM, refer to the pattern table below and erase the EEPROM in the
TCM if necessary.
EEPROM ERASING PATTERNS
METHOD FOR ERASING THE EEPROM IN THE TCM
1. Turn ignition switch ON.
2. Move selector lever to “R” position.
3. Perform “Self-Diagnostic Results” mode for “TRANSMISSION”.
4. Press the brake pedal and turn the brake switch ON.
5. Press the accelerator pedal (0.5/8 - 4/8 throttle) not to exceed the half, and hold it in the half or less open
position. (This will set the closed throttle position signal to OFF and the wide open throttle position signal
to OFF.)
6. Perform “ERASE”.
7. Wait 3 seconds and then release the accelerator pedal.
8. Turn ignition switch OFF.
METHOD FOR WRITING DATA FROM THE ROM ASSEMBLY IN THE TRANSAXLE
In the following procedure, the TCM reads data from the ROM assembly and writes it to the EEPROM in the
TCM.
1. Erase the EEPROM in the TCM.
2. Move selector lever to “P” position.
3. Turn ignition switch ON.
CHECK METHOD
 Standard: About 2 seconds after the ignition switch ON, the CVT indicator lamp lights up for 2 seconds.
 Non-standard: Even after the ignition switch ON, the CVT indicator lamp does not light up after 2 seconds or
illuminates immediately.
CAUTION:
Perform in the “P” or “N” position.
Action for Non-standard
 Replace the CVT assembly.
 Replace the TCM.
CVT assembly TCM Erasing EEPROM in TCM Remarks
Replaced Replaced Not requiredNot required because the EEPROM in the TCM is in
the default state. (CVT assembly must be replaced
first.)
Not replaced Replaced Not requiredNot required because the EEPROM in the TCM is in
the default state.
Replaced Not replaced RequiredRequired because data has been written in the EE-
PROM in the TCM and because the TCM cannot write
data from the ROM assembly in the transmission.

CVT SYSTEM
TM-13
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FUNCTION DIAGNOSIS
CVT SYSTEM
System DiagramINFOID:0000000003848917
JPDIA0755GB

TM-14
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CVT SYSTEM
Component Parts Location
INFOID:0000000003848918
*1: Primary pressure sensor is included in CVT assembly.
*2: Control valve assembly is included in CVT assembly.
NOTE:
The following components are included in control valve assembly (7).
 PNP switch
 Primary speed sensor
 Step motor
 Secondary pressure solenoid valve
 Line pressure solenoid valve
 Torque converter clutch solenoid valve
 Shift control valve
 Secondary valve
 Manual valve
 Lock-up select solenoid valve
1. Sport mode switch 2. Shift position indicator 3. SPORT indicator lamp
4.
TCM5. Secondary speed sensor 6.
Primary pressure sensor
*1
7.
Control valve assembly*28. CVT unit connector 9. Accelerator pedal position sensor
A. Center console B. Combination meter C. Engine room LH
D. CVT assembly E. Accelerator pedal, upper
JPDIA0747ZZ

CVT SYSTEM
TM-15
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 CVT fluid temperature sensor
 Secondary pressure sensor
 ROM assembly

TM-16
< FUNCTION DIAGNOSIS >[CVT: RE0F09B]
MECHANICAL SYSTEM
MECHANICAL SYSTEM
Cross-Sectional ViewINFOID:0000000003848919
1. Converter housing 2. Oil pump 3. Forward clutch
4. Reverse brake 5. Planetary carrier 6. Primary pulley
7. Steel belt 8. Sun gear 9. Side cover
10. Internal gear 11. Secondary pulley 12. Final gear
13. Differential case 14. Idler gear 15. Reduction gear
16. Taper roller bearing 17. Output gear 18. Parking gear
19. Input shaft 20. Torque converter
SCIA7859E

MECHANICAL SYSTEM
TM-17
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System DiagramINFOID:0000000003848920
System DescriptionINFOID:0000000003848921
Transmits the power from the engine to the drive wheel.
JPDIA0755GB