TM-34
< SYSTEM DESCRIPTION >[CVT: RE0F10D]
SYSTEM
CVT CONTROL SYSTEM : Protection Control
INFOID:0000000009463989
The TCM becomes the protection control status temporar ily to protect the safety when the safety of TCM and
transmission is lost. It automatically returns to the normal status if the safety is secured.
The TCM has the following protection control.
CONTROL FOR WHEEL SPIN
TORQUE IS REDUCED WHEN DRIVING WITH THE REVERSE GEAR
CONTROL WHEN FLUID TEMPERATURE IS HIGH
P2813 • Selector shock is large
•Start is slow
• Acceleration is slow
• Vehicle speed is not increased When a malfunction occurs on the low oil pressure side
• Selector shock is large When a malfunction occurs on the high oil pressure side
P2814 • Selector shock is large —
P2815 • Selector shock is large —
U0073 • Selector shock is large
•Start is slow
• Acceleration is slow
• Lock-up is not performed —
U0100 • Selector shock is large
•Start is slow
• Acceleration is slow
• Lock-up is not performed —
U0140 • Not changed from normal driving —
U0141 • Not changed from normal driving —
U0155 • Not changed from normal driving —
U0300 • Selector shock is large
•Start is slow
• Acceleration is slow
• Lock-up is not performed —
U1000 • Not changed from normal driving — U1117 • Not changed from normal driving — DTC Vehicle behavior Conditions of vehicle
Control
When a wheel spin is detected, the engine output and gear ratio are limited and the line pressure is increased.
Limits engine output when a wheel spin occurs in any of right and left drive wheels.
Vehicle behavior in
control If the accelerator is kept depressing during wheel spin, the engine revolution and vehicle speed are limited to
a certain degree.
Normal retu rn condi-
tion Wheel spin convergence returns the control to the normal control.
Control Engine output is controlled according to a vehicle speed while reversing the vehicle.
Vehicle behavior in
control Power performance may be lowered while reversing the vehicle.
Normal retu rn condi-
tion Torque returns to normal by positioning the selector lever in a range other than “R” position.
Control
When the CVT fluid temperature is high, the gear shift permission maximum revolution and the maximum
torque are reduced than usual to prevent increase of the oil temperature.
Vehicle behavior in
control Power performance may be lowered, compared to normal control.
Normal retu rn condi-
tion The control returns to the normal control when CVT fluid temperature is lowered.
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM
SYSTEMTM-39
< SYSTEM DESCRIPTION > [CVT: RE0F10D]
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DESCRIPTION
• Controls for improvement of the transmission effici ency by engaging the torque converter clutch in the
torque converter and eliminating slip of the converter. Achieves comfortable driving with slip control of the
torque converter clutch.
• The oil pressure feed circuit for the torque converter clutch piston chamber is connected to the torque con-
verter clutch control valve. The torque converter clut ch control valve is switched by the torque converter
clutch solenoid valve with the signal from TCM. This contro ls the oil pressure circuit, which is supplied to the
torque converter clutch piston chamber, to the release side or engagement side.
• If the CVT fluid temperature is low or the vehicle is in fail-safe mode due to malfunction, lock-up control is
prohibited.
Lock-up engagement
In lock-up engagement, the torque converter clutch solenoi d valve makes the torque converter clutch control
valve locked up to generate the lock-up apply pressure. This pushes the torque converter clutch piston for
engagement.
Lock-up release condition
In lock-up release, the torque converter clutch solenoi d valve makes the torque converter clutch control valve
non-locked up to drain the lock-up apply pressure. This does not engage the torque converter clutch piston.
JSDIA3783GB
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM
TCM
TM-59
< ECU DIAGNOSIS INFORMATION > [CVT: RE0F10D]
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Protection Control INFOID:0000000009464003
The TCM becomes the protection control status temporar ily to protect the safety when the safety of TCM and
transmission is lost. It automatically returns to the normal status if the safety is secured.
The TCM has the following protection control.
CONTROL FOR WHEEL SPIN
TORQUE IS REDUCED WHEN DRIVING WITH THE REVERSE GEAR
CONTROL WHEN FLUID TEMPERATURE IS HIGH
REVERSE PROHIBIT CONTROL
DTC Inspection Priority ChartINFOID:0000000009464004
If multiple malfunction codes are detected at the same time, check each code according to the DTC check pri-
ority list below.
Control When a wheel spin is detected, the engine output and gear ratio are limited and the line pressure is increased.
Limits engine output when a wheel spin occurs in any of right and left drive wheels.
Vehicle behavior in
control If the accelerator is kept depressing during wheel spin, the engine revolution and vehicle speed are limited to
a certain degree.
Normal return condi-
tion Wheel spin convergence returns the control to the normal control.
Control Engine output is controlled according to a vehicle speed while reversing the vehicle.
Vehicle behavior in
control Power performance may be lowered while reversing the vehicle.
Normal return condi-
tion Torque returns to normal by positioning the sele
ctor lever in a range other than “R” position.
Control When the CVT fluid temperature is high, the gear shift permission maximum revolution and the maximum
torque are reduced than usual to prevent increase of the oil temperature.
Vehicle behavior in
control Power performance may be lowered, compared to normal control.
Normal return condi-
tion The control returns to the normal control when CVT fluid temperature is lowered.
ControlThe reverse brake is controlled to avoid becoming engaged when the selector lever is set in “R” position while
driving in forward direction at more than the specified speed.
Vehicle behavior in
control If the selector lever is put at “R” position when driving with the forward gear, the gear becomes neutral, not
reverse.
Normal return condi-
tion The control returns to normal control when the vehicle is driven at low speeds. (The reverse brake becomes
engaged.)
Priority DTC (Diagnostic Trouble Code) Reference
1 P0863 CONTROL UNIT (CAN)
TM-143, "DTC Logic"
U0073 COMM BUS A OFF TM-88, "DTC Logic"
U0100 LOST COMM (ECM A)TM-89, "DTC Logic"
U0140 LOST COMM (BCM)TM-90, "DTC Logic"
U0141 LOST COMM (BCM A)TM-91, "DTC Logic"
U0155 LOST COMM (IPC)TM-92, "DTC Logic"
U0300 CAN COMM DATA TM-93, "DTC Logic"
U1000 CAN COMM CIRCTM-94, "DTC Logic"
U1117 LOST COMM (ABS)TM-95, "DTC Logic"
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM
TM-60
< ECU DIAGNOSIS INFORMATION >[CVT: RE0F10D]
TCM
DTC Index
INFOID:0000000009464005
NOTE:
• If multiple malfunction codes are detected at the same time, check each code according to the “DTC check
priority list”. Refer to TM-59, "DTC Inspection Priority Chart"
.
• The ignition counter is displayed in “FFD”. Refer to TM-43, "CONSULT Function"
.
2P0740 TORQUE CONVERTER
TM-120, "DTC Logic"
P0743 TORQUE CONVERTERTM-122, "DTC Logic"
P0778 PC SOLENOID BTM-130, "DTC Logic"
P0779 PC SOLENOID BTM-132, "DTC Logic"
P0962 PC SOLENOID ATM-145, "DTC Logic"
P0963 PC SOLENOID ATM-147, "DTC Logic"
P0966 PC SOLENOID BTM-151, "DTC Logic"
P0967 PC SOLENOID BTM-153, "DTC Logic"
P2814 SELECT SOLENOIDTM-160, "DTC Logic"
P2815 SELECT SOLENOIDTM-162, "DTC Logic"
3P062F EEPROM
TM-96, "DTC Logic"
P0705 T/M RANGE SENSOR ATM-97, "DTC Logic"
P0706 T/M RANGE SENSOR ATM-103, "DTC Logic"
P0711 FLUID TEMP SENSOR ATM-106, "DTC Logic"
P0712 FLUID TEMP SENSOR A TM-110, "DTC Logic"
P0713 FLUID TEMP SENSOR ATM-112, "DTC Logic"
P0715 INPUT SPEED SENSOR ATM-114, "DTC Logic"
P0717 INPUT SPEED SENSOR ATM-117, "DTC Logic"
P0841 FLUID PRESS SEN/SW ATM-134, "DTC Logic"
P0847 FLUID PRESS SEN/SW BTM-135, "DTC Logic"
P0848 FLUID PRESS SEN/SW BTM-137, "DTC Logic"
P084C FLUID PRESS SEN/SW HTM-139, "DTC Logic"
P084D FLUID PRESS SEN/SW HTM-141, "DTC Logic"
P0890 TCMTM-144, "DTC Logic"
P2765 INPUT SPEED SENSOR BTM-155, "DTC Logic"
4P0744 TORQUE CONVERTER
TM-124, "DTC Logic"
P0746 PC SOLENOID ATM-126, "DTC Logic"
P0776 PC SOLENOID BTM-128, "DTC Logic"
P0965 PC SOLENOID BTM-149, "DTC Logic"
P2813 SELECT SOLENOIDTM-158, "DTC Logic"
Priority DTC (Diagnostic Trouble Code) Reference
DTC*1, *2
Items
(CONSULT screen terms) Trip
MIL*3Reference
GST CONSULT
(TRANSMISSION)
P062F P062F EEPROM 1 ON TM-96
P0705 P0705 T/M RANGE SENSOR A 2 ONTM-97
P0706 P0706 T/M RANGE SENSOR A 2 ONTM-103
P0711 P0711 FLUID TEMP SENSOR A 2 ONTM-106
P0712 P0712 FLUID TEMP SENSOR A 2 ON TM-110
P0713 P0713 FLUID TEMP SENSOR A 2 ONTM-112
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM
TCM
TM-61
< ECU DIAGNOSIS INFORMATION > [CVT: RE0F10D]
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*1: These numbers are specified by SAE J2012/ISO 15031-6.
*2: The DTC number of the 1st trip is the same as the DTC number.
*3: Refer to TM-41, "DIAGNOSIS DESCRIPTION : Malfunction Indicator Lamp (MIL)"
.
P0715 P0715 INPUT SPEED SENSOR A 2 ON TM-114
P0717 P0717 INPUT SPEED SENSOR A 2 ONTM-117
P0740 P0740 TORQUE CONVERTER 2 ONTM-120
P0743 P0743 TORQUE CONVERTER 2 ONTM-122
P0744 P0744 TORQUE CONVERTER 2 ONTM-124
P0746 P0746 PC SOLENOID A 2 ONTM-126
P0776 P0776 PC SOLENOID B 2 ONTM-128
P0778 P0778 PC SOLENOID B 2 ONTM-130
P0779 P0779 PC SOLENOID B 2 ONTM-132
P0841 P0841 FLUID PRESS SEN/SW A 2 ONTM-134
P0847 P0847 FLUID PRESS SEN/SW B 2 ONTM-135
P0848 P0848 FLUID PRESS SEN/SW B 2 ONTM-137
P084C P084C FLUID PRESS SEN/SW H 2 ON TM-139
P084D P084D FLUID PRESS SEN/SW H 2 ONTM-141
P0863 P0863 CONTROL UNIT (CAN) 1 ONTM-143
P0890 P0890 TCM 1 ONTM-144
P0962 P0962 PC SOLENOID A 2 ONTM-145
P0963 P0963 PC SOLENOID A 2 ONTM-147
P0965 P0965 PC SOLENOID B 2 ONTM-149
P0966 P0966 PC SOLENOID B 2 ONTM-151
P0967 P0967 PC SOLENOID B 2 ONTM-153
P2765 P2765 INPUT SPEED SENSOR B 2 ONTM-155
P2813 P2813 SELECT SOLENOID 2 ONTM-158
P2814 P2814 SELECT SOLENOID 2 ONTM-160
P2815 P2815 SELECT SOLENOID 2 ONTM-162
U0073 U0073 COMM BUS A OFF 1 ON TM-88
U0100 U0100 LOST COMM (ECM A) 1 ONTM-89
— U0140 LOST COMM (BCM) 1 —TM-90
— U0141 LOST COMM (BCM A) 1 —TM-91
— U0155 LOST COMM (IPC) 1 —TM-92
— U0300 CAN COMM DATA 1 —TM-93
— U1000 CAN COMM CIRC 1 —TM-94
— U1117 LOST COMM (ABS) 1 —TM-95
DTC*1, *2Items
(CONSULT screen terms) Trip
MIL*3Reference
GST CONSULT
(TRANSMISSION)
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM
ADDITIONAL SERVICE WHEN REPLACING TRANSAXLE ASSEMBLY
TM-81
< BASIC INSPECTION > [CVT: RE0F10D]
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ADDITIONAL SERVICE WHEN RE PLACING TRANSAXLE ASSEMBLY
DescriptionINFOID:0000000009464012
Perform the following work after the transaxle assembly is replaced.
ERASING AND WRITING TCM DATA• TCM performs accurate control by retrieving data (inher ent characteristic value) of each solenoid. For this
reason, after replacing transaxle assembly, it is nec essary to erase data stored in TCM and write new data.
ERASING OF CVT FLUID DEGRADATION LEVEL DATA • TCM records the degradation level of the CVT fluid calc ulated from the vehicle driving status. Therefore, if
the transaxle assembly is replaced, it is necessary to erase the CVT fluid degradation level data recorded by
TCM.
Work ProcedureINFOID:0000000009464013
1.CHECK THE SERIAL NUMBER (PART 1)
Write down the serial number of new transaxle assembly.
>> GO TO 2.
2.CHECK THE SERIAL NUMBER (PART 2)
1. Turn ignition switch ON.
2. Insert the attached CD into CONSULT.
3. Select “Work Support” in “TRANSMISSION”.
4. Select “WRITE IP CHARA - REPLACEMENT AT/CVT”.
5. Check that the serial number displayed on CO NSULT screen and those written in the memo agree.
CAUTION:
Never perform writing procedure.
6. Go back to MENU of “Work Support”.
>> GO TO 3.
3.INITIALIZE TCM
1. Set parking brake.
2. Select “ERASE MEMORY DATA”.
3. Touch “Start” according to the instructions on the CONSULT screen.
Is
“COMPLETED” displayed?
YES >> GO TO 4.
NO >> Turn ignition switch OFF and wait for a mi nimum of 10 seconds then perform the work again.
JSDIA4208GB
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM
TM-82
< BASIC INSPECTION >[CVT: RE0F10D]
ADDITIONAL SERVICE WHEN REPLACING TRANSAXLE ASSEMBLY
4.WRITE THE DATA
NOTE:
Write data of new solenoid in TCM according to the following instructions:
1. Shift the selector lever to the P position.
2. Turn ignition switch OFF and wait for 10 seconds.
3. Turn ignition switch ON.
4. Select “Work Support” in “TRANSMISSION”.
5. Select “WRITE IP CHARA - REPLACEMENT AT/CVT”.
6. Write data in TCM according to t he instructions on the CONSULT screen.
NOTE:
When writing is complete, the shift position indicator of the combination meter displays P.
>> GO TO 5.
5.ERASE CVT FLUID DEGRADATION LEVEL DATA
1. Select “WORK SUPPORT” in “TRANSMISSION”.
2. Select “CONFORM CVTF DETERIORTN”.
3. Touch “Clear”.
>> WORK END
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM
CVT FLUIDTM-83
< BASIC INSPECTION > [CVT: RE0F10D]
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CVT FLUID
ReplacementINFOID:0000000009464014
CAUTION:
• Always use shop paper. Never use shop cloth.
• Replace a drain plug gasket with new ones at the fi nal stage of the operation when installing.
• Use caution when looking into the drain hole as there is a risk of dripping fluid entering the eye.
• After replacement, always pe rform CVT fluid leakage check.
1. Select “Data Monitor” in “TRANSMISSION” using CONSULT.
2. Select “FLUID TEMP” and confirm t hat the CVT fluid temperature is 40°C (104 °F) or less.
3. Check that the selector lever is in the “P ” position, then completely engage the parking brake.
4. Lift up the vehicle.
5. Remove the drain plug and drain the CVT fluid from the oil pan. Refer to TM-186, "Exploded View"
.
6. Install the drain plug to oil pan. CAUTION:
Drain plug gasket use the old one.
7. Remove the overflow plug from converter housing.
8. Install the charging pipe set (KV311039S0) (A) into the overflow plug hole.
CAUTION:
Tighten the charging pipe by hand.
9. Install the ATF changer hose (B) to the charging pipe. CAUTION:
Press the ATF changer hose all the way onto the charging
pipe until it stops.
10. Fill approximately 3 liter (2-5 /8 lmp qt) of the CVT fluid.
11. Remove the ATF changer hose and charging pipe, then install the overflow plug.
NOTE:
Perform this work quickly because CVT fluid leaks.
12. Lift down the vehicle.
13. Start the engine.
14. While depressing the brake pedal, shift the selector leve r to the entire position from “P” to “DS”, and shift it
to the “P” position.
NOTE:
Hold the lever at each position for 5 seconds.
15. Check that the CONSULT “Data Monitor” in “FLUID TEMP” is 35°C (95 °F) to 45 °C (113 °F).
16. Stop the engine.
17. Lift up the vehicle.
18. Remove the drain plug, and then drain CVT fluid from oil pan. CVT fluid : Refer to
TM-212, "General Specification"
.
Fluid capacity : Refer to TM-212, "General Specification"
.
JSDIA3714ZZ
JSDIA3713ZZ
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM