can NISSAN TEANA 2003 Service Manual

CVT-6
INDEX FOR DTC

INDEX FOR DTCPFP:00024
Alphabetical Index BCS001FM
NOTE:
If DTC “U1000 CAN COMM CIRCUIT” is displayed with other DTC s, first perform the trouble diagnosis
for “DTC U1000 CAN COMMUNICATION LINE”. Refer to CVT-53
.
Items
(CONSULT-II screen terms) DTC Reference page
A/T TCC S/V FNCTN P0744 CVT-94
ATF TEMP SEN/CIRC P0710CVT-69
BELT DAMGP0730CVT-87
BRAKE SW/CIRC P0703CVT-60
CAN COMM CIRCUIT U1000CVT-53
CVT SPD SEN/FNCTN P1723CVT-143
ENGINE SPEED SIG P0725CVT-85
ELEC TH CONTROL P1726CVT-145
ESTM VEH SPD SIG P1722CVT-141
INPUT SPD SEN/CIRC P0715CVT-74
L/PRESS CONTROL P1745CVT-152
L/PRESS SOL/CIRC P0745CVT-97
LU-SLCT SOL/CIRC P1740CVT-147
MANUAL MODE SWITCH P0826CVT-113
PNP SW/CIRCP0705CVT-62
PRESS SEN/FNCTN P0841CVT-123
PRS CNT SOL/A FCTN P0746CVT-102
PRS CNT SOL/B CIRC P0778CVT-108
PRS CNT SOL/B FCTN P0776CVT-105
SEC/PRESS DOWN P0868CVT-131
STARTER RELAY/CIRC P0615CVT-56
STEP MOTR CIRC P1777CVT-153
STEP MOTR/FNCTN P1778CVT-157
TCC SOLENOID/CIRC P0740CVT-89
TCM-POWER SUPPLY P1701CVT-134
TP SEN/CIRC A/T P1705CVT-139
TR PRS SENS/A CIRC P0840CVT-118
TR PRS SENS/B CIRC P0845CVT-126
VEH SPD SEN/CIR AT P0720CVT-79

INDEX FOR DTC
CVT-7
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CVT

DTC No. Index BCS001FN
NOTE:
If DTC “U1000 CAN COMM CIRCUIT” is displayed with other DTC s, first perform the trouble diagnosis
for “DTC U1000 CAN COMMUNICATION LINE”. Refer to CVT-53
.
DTCItems
(CONSULT-II screen terms)Reference page
P0615 STARTER RELAY/CIRCCVT-56
P0703 BRAKE SW/CIRCCVT-60
P0705 PNP SW/CIRCCVT-62
P0710 ATF TEMP SEN/CIRCCVT-69
P0715 INPUT SPD SEN/CIRCCVT-74
P0720 VEH SPD SEN/CIR ATCVT-79
P0725 ENGINE SPEED SIGCVT-85
P0730 BELT DAMGCVT-87
P0740 TCC SOLENOID/CIRCCVT-89
P0744 A/T TCC S/V FNCTNCVT-94
P0745 L/PRESS SOL/CIRCCVT-97
P0746 PRS CNT SOL/A FCTNCVT-102
P0776 PRS CNT SOL/B FCTNCVT-105
P0778 PRS CNT SOL/B CIRCCVT-108
P0826 MANUAL MODE SWITCHCVT-113
P0840 TR PRS SENS/A CIRCCVT-118
P0841 PRESS SEN/FNCTNCVT-123
P0845 TR PRS SENS/B CIRCCVT-126
P0868 SEC/PRESS DOWNCVT-131
P1701 TCM-POWER SUPPLYCVT-134
P1705 TP SEN/CIRC A/TCVT-139
P1722 ESTM VEH SPD SIGCVT-141
P1723 CVT SPD SEN/FNCTNCVT-143
P1726 ELEC TH CONTROLCVT-145
P1740 LU-SLCT SOL/CIRCCVT-147
P1745 L/PRESS CONTROLCVT-152
P1777 STEP MOTR CIRCCVT-153
P1778 STEP MOTR/FNCTNCVT-157
U1000 CAN COMM CIRCUITCVT-53

CVT-8
PRECAUTIONS

PRECAUTIONSPFP:00001
Precautions for Supplemental Restraint System (SRS) “AIR BAG” and “SEAT
BELT PRE-TENSIONER”
BCS001NA
The Supplemental Restraint System such as “AIR BAG” and “SEAT BELT PRE-TENSIONER”, used along
with a front seat belt, helps to reduce the risk or severity of injury to the driver and front passenger for certain
types of collision. Information necessary to service the system safely is included in the SRS and SB section of
this Service Manual.
WARNING:

To avoid rendering the SRS inoperative, which could increase the risk of personal injury or death
in the event of a collision which would result in air bag inflation, all maintenance must be per-
formed by an authorized NISSAN/INFINITI dealer.

Improper maintenance, including incorrect removal and installation of the SRS, can lead to per-
sonal injury caused by unintentional activation of the system. For removal of Spiral Cable and Air
Bag Module, see the SRS section.

Do not use electrical test equipment on any circuit related to the SRS unless instructed to in this
Service Manual. SRS wiring harnesses can be identified by yellow and/or orange harnesses or
harness connectors.
Precautions Necessary for Steering Wheel Rotation After Battery DisconnectBCS001NB
NOTE:

This Procedure is applied only to models with Intelligent Key system and NVIS/IVIS (NISSAN/INFINITI
VEHICLE IMMOBILIZER SYSTEM - NATS).

Remove and install all control units after disconnecting both battery cables with the ignition knob in the
″LOCK″ position.

Always use CONSULT-II to perform self-diagnosis as a part of each function inspection after finishing
work. If DTC is detected, perform trouble diagnosis according to self-diagnostic results.
For models equipped with the Intelligent Key system and NVIS/IVIS, an electrically controlled steering lock
mechanism is adopted on the key cylinder.
For this reason, if the battery is disconnected or if the battery is discharged, the steering wheel will lock and
steering wheel rotation will become impossible.
If steering wheel rotation is required when battery power is interrupted, follow the procedure below before
starting the repair operation.
OPERATION PROCEDURE
1. Connect both battery cables.
NOTE:
Supply power using jumper cables if battery is discharged.
2. Use the Intelligent Key or mechanical key to turn the ignition switch to the ″ACC″ position. At this time, the
steering lock will be released.
3. Disconnect both battery cables. The steering lock will remain released and the steering wheel can be
rotated.
4. Perform the necessary repair operation.
5. When the repair work is completed, return the ignition switch to the ″LOCK″ position before connecting
the battery cables. (At this time, the steering lock mechanism will engage.)
6. Perform a self-diagnosis check of all control units using CONSULT-II.

PRECAUTIONS
CVT-9
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CVT

Precautions for TCM and CVT Assembly ReplacementBCS001FR
When replacing CVT assembly or TCM, refer to the pattern table below and erase the EEPROM in the TCM if
necessary.
CAUTION:

Check if new data (Unit ID) are entered correctly after replacing CVT assembly and erasing data in
TCM. (Connect CONSULT-II, and then turn ignition switch OFF.)

“TCM POWER SUPPLY [P1701]” may be indicated soon after replacing TCM or transaxle assembly
(after erasing the memory). Restart the self-diagnosis after erasing the self-diagnosis result.
Check that no error is detected.
EEPROM ERASING PATTERNS
METHOD FOR ERASING THE EEPROM IN THE TCM
1. Connect CONSULT-II to data link connector. Refer to CVT-45, "CONSULT-II SETTING PROCEDURE" .
2. Turn ignition switch ON. Confirm that CONSULT-II is turned ON.
3. Move selector lever to “R” position.
4. Touch “START (NISSAN BASED VHCL)” on CONSULT-II.
5. Select “SELF-DIAG RESULTS” mode for “TRANSMISSION” with CONSULT-II.
6. Press the brake pedal and turn the brake switch ON.
7. 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.)
8. Touch “ERASE” on CONSULT-II, and then touch “YES”.
9. Wait 3 seconds and then release the accelerator pedal.
10. 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
EEPROM in the TCM and because the TCM cannot
write data from the ROM assembly in the transmis-
sion.

PRECAUTIONS
CVT-11
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CVT

Precautions BCS001FT
NOTE:
If any malfunction occurs in the RE0F09A model transaxle, replace the entire transaxle assembly.

Before connecting or disconnecting the TCM harness con-
nector, turn ignition switch OFF and disconnect the battery
cable from the negative terminal. Because battery voltage is
applied to TCM even if ignition switch is turned OFF.

When connecting or disconnecting pin connectors into or
from TCM, take care not to damage pin terminals (bend or
break).
When connecting pin connectors make sure that there are
not any bends or breaks on TCM pin terminal.

Before replacing TCM, perform TCM input/output signal
inspection and make sure whether TCM functions properly
or not. Refer to CVT-40, "
TCM INSPECTION TABLE".

After performing each TROUBLE DIAGNOSIS, perform “DTC Confirmation Procedure”.
If the repair is completed the DTC should not be displayed in the “DTC Confirmation Procedure”.

Always use the specified brand of CVT fluid. Refer to MA-14, "Fluids and Lubricants" .

Use lint-free paper, not cloth rags, during work.

After replacing the CVT fluid, dispose of the waste oil using the methods prescribed by law, ordinance,
etc.
SEF289H
SEF291H
MEF040DA

CVT-18
CVT SYSTEM

TCM FunctionBCS001G2
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.
CONTROL SYSTEM OUTLINE
The CVT senses vehicle operating conditions through various sensors. It always controls the optimum shift
position and reduces shifting and lock-up shocks.
CONTROL SYSTEM DIAGRAM
SENSORS (or SIGNAL)

TCM

ACTUATORS
PNP switch
Accelerator pedal position signal
Closed throttle position signal
Engine speed signal
CVT fluid temperature sensor
Vehicle speed signal
Manual mode signal
Stop lamp switch signal
Primary speed sensor
Secondary speed sensor
Primary pressure 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-II communication line
Duet-EA control
CAN systemSte p mo tor
Torque converter clutch solenoid
valve
Lock-up select solenoid valve
Line pressure solenoid valve
Secondary pressure solenoid
valve
Manual mode indicator
Shift position indicator
CVT indicator lamp
Starter relay
SCIA7872E

CVT SYSTEM
CVT-19
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CVT

CAN CommunicationBCS001G3
SYSTEM DESCRIPTION
CAN (Controller Area Network) is a serial communication line for real time application. It is an on-vehicle mul-
tiplex communication line with high data communication speed and excellent error detection ability. Many elec-
tronic control units are equipped onto a vehicle, and each control unit shares information and links with other
control units during operation (not independent). In CAN communication, control units are connected with 2
communication lines (CAN-H line, CAN-L line) allowing a high rate of information transmission with less wiring.
Each control unit transmits/receives data but selectively reads required data only. For details, refer to LAN-49,
"CAN System Specification Chart" .
Input/Output Signal of TCMBCS001G4
*1: Input by CAN communications.
*2: If these input and output signals are different, the TCM triggers the fail-safe function. Control item Fluid
pressure
control Select
control Shift con-
trol Lock-up
control CAN com-
munication
control Fail-safe
function
(*2)
Input PNP switch XXXXXX
Accelerator pedal position signal
(*1)XXXXXX
Closed throttle position signal
(*1)XXXX
Engine speed signal
(*1)XX XXX
CVT fluid temperature sensor X X X X X
Manual mode signal
(*1)XXXXX
Stop lamp switch signal
(*1)XXXX
Primary speed sensor X X X X X
Secondary speed sensor X X X X X X
Primary pressure sensor X X
Secondary pressure sensor X X X
TCM power supply voltage signal X X X X X X
Out-
put Step motor X X
TCC solenoid valve X X X
Lock-up select solenoid valve X X X
Line pressure solenoid valve X X X X
Secondary pressure solenoid valve X X X

CVT-20
CVT SYSTEM

Line Pressure and Secondary Pressure ControlBCS001G5

When an input torque signal equivalent to the engine drive force is sent from the ECM to the TCM, the
TCM controls the line pressure solenoid valve and secondary pressure solenoid valve.

This line pressure solenoid controls the pressure regulator valve as the signal pressure and adjusts the
pressure of the operating oil discharged from the oil pump to the line pressure most appropriate to the
driving state. Secondary pressure is controlled by decreasing line pressure.
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
When controlling the normal fluid pressure or the selected fluid pressure, the secondary pressure can be set
more accurately by using the fluid pressure sensor to detect the secondary pressure and controlling the feed-
back.
Shift ControlBCS001G6
In order to select the gear ratio which 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 send the com-
mand to the step motor, and control the flow-in/flow-out of line pressure from the primary pulley to determine
the position of the moving-pulley and control the gear ratio.
SCIA1846E
SCIA6581E

CVT SYSTEM
CVT-21
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CVT

NOTE:
The gear ratio is set for every position separately.
“D” POSITION
Shifting over all the ranges of gear ratios from the lowest to the high-
est.
“M” POSITION
When the selector lever is put in the manual shift gate side, the fixed
changing gear line is set. By moving the selector lever to + side or -
side, the manual mode switch is changed over, and shift change like
M/T becomes possible following the changing gear set line step by
step.
DOWNHILL ENGINE BRAKE CONTROL (AUTO ENGINE BRAKE CONTROL)
When downhill 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.
ACCELERATION CONTROL
According to vehicle speed and a change of accelerator pedal angle, driver's request for acceleration and driv-
ing scene are judged. This function assists improvement in acceleration feeling by making the engine speed
proportionate to the vehicle speed. And a shift map which can gain a larger driving force is available for com-
patibility of mileage with drivability.
Lock-up and Select ControlBCS001G7

The torque converter clutch piston in the torque converter is engaged to eliminate torque converter slip to
increase power transmission efficiency.

The torque converter clutch control valve operation is controlled by the torque converter clutch solenoid
valve, which is controlled by a signal from TCM. The torque converter clutch control valve engages or
releases the torque converter clutch piston.

When shifting between “N” (“P”) ⇔ “D” (“R”), torque converter clutch solenoid controls engagement power
of forward clutch and reverse brake.

The lock-up applied gear range was expanded by locking up the
torque converter at a lower vehicle speed than conventional
CVT models.
SCIA1953E
SCIA4582E
SCIA1958E

CVT-24
TROUBLE DIAGNOSIS

TROUBLE DIAGNOSISPFP:00004
DTC Inspection Priority ChartBCS001GE
If some DTCs are displayed at the same time, perform inspections one by one based on the following priority
chart.
NOTE:
If DTC “U1000 CAN COMM CIRCUIT” is displayed with other DTCs, first perform the trouble diagnosis
for “DTC U1000 CAN COMMUNICATION LINE”. Refer to CVT-53
.
Fail-safeBCS001GF
The TCM has an electrical fail-safe mode. This mode makes it possible to operate even if there is an error in a
main electronic control input/output signal circuit.
FAIL-SAFE FUNCTION
If any malfunction occurs in a sensor or solenoid, this function controls the CVT to make driving possible.
Output Speed Sensor (Secondary Speed Sensor)
The shift pattern is changed in accordance with throttle position when an unexpected signal is sent from the
output speed sensor (secondary speed sensor) to the TCM. The manual mode position and second position is
inhibited, and the transaxle is put in “D”.
Input Speed Sensor (Primary Speed Sensor)
The shift pattern is changed in accordance with throttle position and secondary speed (vehicle speed) when
an unexpected signal is sent from the input speed sensor (primary speed sensor) to the TCM. The manual
mode position and second position is inhibited, and the transaxle is put in “D”.
PNP Switch
If an unexpected signal is sent from the PNP switch to the TCM, the transaxle is put in “D”.
Manual Mode Switch
If an unexpected signal is sent from the manual mode switch to the TCM, the transaxle is put in “D”.
CVT Fluid Temperature Sensor
If an unexpected signal is sent from the CVT fluid temperature sensor to the TCM, the gear ratio in use before
receiving the unexpected signal is maintained or the gear ratio is controlled to keep engine speed under 5,000
rpm.
Transmission Fluid Pressure Sensor A (Secondary Pressure Sensor)

If an unexpected signal is sent from the transmission fluid pressure sensor A (secondary pressure sensor)
to the TCM, the secondary pressure feedback control is stopped and the offset value obtained before the
non-standard condition occurs is used to control line pressure.

If transmission fluid pressure sensor A (secondary pressure sensor) error signal is input to TCM, second-
ary pressure feedback control stops, but line pressure is controlled normally.
Pressure Control Solenoid A (Line Pressure Solenoid)
If an unexpected signal is sent from the solenoid to the TCM, the pressure control solenoid A (line pressure
solenoid) is turned OFF to achieve the maximum fluid pressure.
Pressure Control Solenoid B (Secondary Pressure Solenoid)
If an unexpected signal is sent from the solenoid to the TCM, the pressure control solenoid B (secondary pres-
sure solenoid) is turned OFF to achieve the maximum fluid pressure.
Torque Converter Clutch Solenoid
If an unexpected signal is sent from the solenoid to the TCM, the torque converter clutch solenoid is turned
OFF to cancel the lock-up.
Priority Detected items (DTC)
1 U1000 CAN communication line
2 Except above