2008 NISSAN TEANA Trans

TM-114
< ECU DIAGNOSIS >[CVT: RE0F09B]
TCM
9
(L/R)— CHIP SELECT (SEL1) — — —
10
(BR/R)— DATA I/O (SEL3) — — —
11
(BR/W)Ground PNP switch 1 Input Ignition switch ONSelector lever in “R”, “N” and “D”
positions0 V
Selector lever in other positionsBattery
voltage
13
(V)GroundCVT fluid temperature sen-
sor Input Ignition switch ONWhen CVT fluid temperature is
20°C (68°F)1.9 – 2.2
V
When CVT fluid temperature is
80°C (176°F)0.8 – 1.1
V
14
(R/W)GroundTransmission fluid pres-
sure sensor B (Primary
pressure sensor)Input
“N” position idle0.5 – 0.8
V
15
(V/W)GroundTransmission fluid pres-
sure sensor A (Secondary
pressure sensor)Input1.0 – 1.5
V
19
(G/B)Ground Reverse lamp relay Output Ignition switch ONSelector lever in “R” position 0 V
Selector lever in other positionsBattery
voltage
20
(R/B)Ground Starter relay Output Ignition switch ONSelector lever in “N”, “P” posi-
tionsBattery
voltage
Selector lever in other positions 0 V
25
(W/R)Ground Sensor ground Output Always 0 V
26
(L/O)Ground Sensor power OutputIgnition switch ON —4.75 –
5.25 V
Ignition switch OFF — 0 V
27
(R/G)Ground Step motor D Output
Within 2 seconds after ignition switch ON, measure the
time using the pulse width measurement function (Hi
level) of CONSULT-III.*
CAUTION:
Connect the diagnosis data link cable to the vehicle
diagnosis connector.10.0
msec
28
(R)Ground Step motor C Output30.0
msec
29
(O/B)Ground Step motor B Output10.0
msec
30
(G/R)Ground Step motor A Output30.0
msec
31
(P)— CAN-L Input/Output — —
32
(L)— CAN-H Input/Output — —
33
(LG)GroundInput speed sensor (Prima-
ry speed sensor)InputWhen driving at 20 km/h (12 MPH) in “L” position, use
the CONSULT-III pulse frequency measuring function.680 Hz
34
(LG/R)GroundOutput speed sensor (Sec-
ondary speed sensor)InputWhen driving at 20 km/h (12 MPH) in “D” position, use
the CONSULT-III pulse frequency measuring function.400 Hz
37
(V/R)GroundLock-up select solenoid
valveOutput Ignition switch ONSelector lever in “P”, “N” posi-
tions Battery
voltage
Wait at least for 5 seconds with
the selector lever in “R”, “D” and
“L” positions.0 V Te r m i n a l N o .
(Wire color)Description
ConditionVa l u e
(Approx.)
+ - Signal name Input/Output

TCM
TM-121
< ECU DIAGNOSIS >[CVT: RE0F09B]
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B
TM
N
O
P Output Speed Sensor (Secondary Speed Sensor)
The shift pattern is changed in accordance with the throttle position when an unexpected signal is sent from
the output speed sensor (secondary speed sensor) to the TCM. The sport mode is inhibited, and the transaxle
is put in “D”.
Input Speed Sensor (Primary Speed Sensor)
The shift pattern is changed in accordance with the 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 sport
mode 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”.
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 inputted to the TCM, sec-
ondary pressure feedback control stops, but line pressure is controlled normally.
Pressure Control Solenoid A (Line Pressure Solenoid Valve)
If an unexpected signal is sent from the solenoid valve to the TCM, the pressure control solenoid A (line pres-
sure solenoid valve) is turned OFF to achieve the maximum fluid pressure.
Pressure Control Solenoid B (Secondary Pressure Solenoid Valve)
If an unexpected signal is sent from the solenoid valve to the TCM, the pressure control solenoid B (secondary
pressure solenoid valve) is turned OFF to achieve the maximum fluid pressure.
Torque Converter Clutch Solenoid Valve
If an unexpected signal is sent from the solenoid valve to the TCM, the torque converter clutch solenoid valve
is turned OFF to cancel the lock-up.
Ste p M oto r
If an unexpected signal is sent from the step motor to the TCM, the step motor coil phases “A” through “D” are
all turned OFF to hold the gear ratio used just before the non-standard condition occurred.
CVT Lock-up Select Solenoid Valve
If an unexpected signal is sent from the solenoid valve to the TCM, the CVT lock-up select solenoid valve is
turned OFF to cancel the lock-up.
TCM Power Supply (Memory Back-up)
Transaxle assembly is protected by limiting the engine torque when the memory back-up power supply (for
controlling) from the battery is not supplied to the TCM. Normal status is restored when turning the ignition
switch OFF to ON after the normal power supply.
DTC Inspection Priority ChartINFOID:0000000003849062
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 indicated with other DTCs, start from a diagnosis for “DTC
U1000 CAN COMMUNICATION LINE”. Refer to TM-41
.
DTC IndexINFOID:0000000003849063
NOTE:
Priority Detected items (DTC)
1 U1000 CAN communication line
2 Except above

TM-122
< ECU DIAGNOSIS >[CVT: RE0F09B]
TCM
If DTC “U1000 CAN COMM CIRCUIT” is indicated with other DTCs, start from a diagnosis for “DTC
U1000 CAN COMMUNICATION LINE”. Refer to TM-41
.
 *1: These numbers are prescribed by ISO 15031-6.
 *2: Refer to TM-35, "
Diagnosis Description". DTC
*1
Items
(CONSULT-III screen terms)Reference
MIL*2, “ENGINE” with CON-
SULT-III or GSTCONSULT-III only “TRANS-
MISSION”
— P0615 STARTER RELAY/CIRCTM-42
— P0703 BRAKE SW/CIRCTM-44
P0705 P0705 PNP SW/CIRCTM-47
P0710 P0710 ATF TEMP SEN/CIRCTM-50
P0715 P0715 INPUT SPD SEN/CIRCTM-52
P0720 P0720 VEH SPD SEN/CIR ATTM-55
— P0725 ENGINE SPEED SIGTM-59
— P0730 BELT DAMGTM-60
P0740 P0740 TCC SOLENOID/CIRCTM-62
P0744 P0744 A/T TCC S/V FNCTNTM-64
P0745 P0745 L/PRESS SOL/CIRCTM-66
P0746 P0746 PRS CNT SOL/A FCTNTM-68
P0776 P0776 PRS CNT SOL/B FCTNTM-70
P0778 P0778 PRS CNT SOL/B CIRCTM-72
P0840 P0840 TR PRS SENS/A CIRCTM-74
— P0841 PRESS SEN/FNCTNTM-77
P0845 P0845 TR PRS SENS/B CIRCTM-80
— P0868 SEC/PRESS DOWNTM-83
— P1701 TCM-POWER SUPPLYTM-85
— P1705 TP SEN/CIRC A/TTM-88
— P1722 ESTM VEH SPD SIGTM-89
— P1723 CVT SPD SEN/FNCTNTM-91
— P1726 ELEC TH CONTROLTM-93
P1740 P1740 LU-SLCT SOL/CIRCTM-94
— P1745 L/PRESS CONTROLTM-96
P1777 P1777 STEP MOTR CIRCTM-97
P1778 P1778 STEP MOTR/FNCTM-100
U1000 U1000 CAN COMM CIRCUITTM-41

TM-136
< PRECAUTION >[CVT: RE0F09B]
PRECAUTIONS
Precaution for Procedure without Cowl Top Cover
INFOID:0000000003897196
When performing the procedure after removing cowl top cover, cover
the lower end of windshield with urethane, etc.
Precaution for On Board Diagnosis (OBD) System of CVT and EngineINFOID:0000000003849068
The ECM has an on board diagnostic system. It will light up the malfunction indicator (MI) to warn the driver of
a malfunction causing emission deterioration.
CAUTION:
 Be sure to turn the ignition switch OFF and disconnect the battery cable from the negative terminal
before any repair or inspection work. The open/short circuit of related switches, sensors, solenoid
valves, etc. will cause the MI to light up.
 Be sure to connect and lock the connectors securely after work. A loose (unlocked) connector will
cause the MI to light up due to an open circuit. (Be sure the connector is free from water, grease, dirt,
bent terminals, etc.)
 Be sure to route and secure the harnesses properly after work. Interference of the harness with a
bracket, etc. may cause the MI to light up due to a short circuit.
 Be sure to connect rubber tubes properly after work. A misconnected or disconnected rubber tube
may cause the MI to light up due to a malfunction of the EVAP system or fuel injection system, etc.
 Be sure to erase the unnecessary malfunction information (repairs completed) from the TCM and
ECM before returning the vehicle to the customer.
Precaution for TCM and CVT Assembly ReplacementINFOID:0000000003849069
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
Removal and Installation Procedure for CVT Unit ConnectorINFOID:0000000003849070
REMOVAL
PIIB3706J
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.

TM-138
< PRECAUTION >[CVT: RE0F09B]
PRECAUTIONS
Precaution
INFOID:0000000003849071
Turn ignition switch OFF and disconnect negative battery
cable before connecting or disconnecting the TCM harness
connector. Because battery voltage is applied to TCM even if
ignition switch is turned OFF.
When connecting or disconnecting pin connectors into or
from TCM, do not damage pin terminals (bend or break).
Check that there are not any bends or breaks on TCM pin ter-
minal, when connecting pin connectors.
Perform TCM input/output signal inspection and check
whether TCM functions normally or not before replacing TCM.
TM-111, "
Reference Value".
Perform “DTC Confirmation Procedure” after performing each
TROUBLE DIAGNOSIS.
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-11, "
Flu-
ids and Lubricants".
 Use lint-free paper, not cloth rags, during work.
 Dispose of the waste oil using the methods prescribed by law, ordi-
nance, etc. after replacing the CVT fluid.
Service Notice or PrecautionINFOID:0000000003849072
OBD SELF-DIAGNOSIS
 CVT self-diagnosis is performed by the TCM in combination with the ECM. The results can be read through
the blinking pattern of the Malfunction Indicator (MI). Refer to the table on TM-37, "
CONSULT-III Function
(TRANSMISSION)" for the indicator used to display each self-diagnostic result.
 The self-diagnostic results indicated by the MI are automatically stored in both the ECM and TCM memories.
SEF289H
SEF291H
MEF040DA
SAT652J

PREPARATION
TM-141
< PREPARATION >[CVT: RE0F09B]
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Oil pressure gauge set
1.Oil pressure gauge
2.Hose
3.Joint pipeMeasuring line pressure
31197CA000
Drive plate location guide
a: 14 mm (0.55 in) dia.Installing transaxle assembly Tool number
Tool nameDescription
SCIA8373J
SCIA2013E

CVT FLUID
TM-143
< ON-VEHICLE MAINTENANCE >[CVT: RE0F09B]
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Check CVT fluid condition.
 If CVT fluid is very dark or smells burned, check operation of CVT.
Flush cooling system after repair of CVT.
 If CVT fluid contains frictional material (clutches, brakes, etc.),
replace radiator and flush cooler line using cleaning solvent and
compressed air after repair of CVT. Refer to CO-13, "
Exploded
View".
ChangingINFOID:0000000003849077
CAUTION:
Replace O-ring with new ones at the final stage of the operation when installing.
1. Remove drain plug from oil pan.
2. Remove drain plug gasket from drain plug.
3. Install drain plug gasket to drain plug.
CAUTION:
Never reuse drain plug gasket.
4. Install drain plug to oil pan.
5. Fill CVT fluid from CVT fluid charging pipe to the specified level.
CAUTION:
 Use only Genuine NISSAN CVT Fluid NS-2. Never 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.
 When filling CVT fluid, take care not to scatter heat generating parts such as exhaust.
 Sufficiently shake the container of CVT fluid before using.
 Delete CVT fluid deterioration date with CONSULT-III after changing CVT fluid. Refer to TM-37,
"CONSULT-III Function (TRANSMISSION)".
6. With the engine warmed up, drive the vehicle in an urban area.
NOTE:
When ambient temperature is 20°C (68°F), it takes about 10 minutes for the CVT fluid to warm up to 50 to
80°C (122 to 176°F).
7. Check CVT fluid level and condition.
8. Repeat steps 1 to 5 if CVT fluid has been contaminated.
Fluid status Conceivable cause Required operation
Varnished (viscous
varnish state)CVT fluid becomes
degraded due to
high temperatures.Replace the CVT fluid and check the
CVT main unit and the vehicle for
malfunctions (wire harnesses, cool-
er pipes, etc.)
Milky white or
cloudyWater in the fluidReplace the CVT fluid and check for
places where water is getting in.
Large amount of
metal powder mixed
inUnusual wear of
sliding parts within
CVTReplace the CVT fluid and check for
improper operation of the CVT.
ATA0022D
Drain plug – tightening torque : Refer to TM-159, "Exploded View"
CVT fluid : Refer to TM-174, "General Specification".
Fluid capacity : Refer to TM-174, "
General Specification".

ROAD TEST
TM-151
< ON-VEHICLE MAINTENANCE >[CVT: RE0F09B]
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3. Accelerate vehicle at 8/8 throttle opening and check “Vehicle
Speed When Shifting Gears”.
With CONSULT-III
- Read vehicle speed and engine speed. Refer to TM-174, "Vehi-
cle Speed When Shifting Gears".
Is the inspection result normal?
YES >> GO TO 5.
NO >> Refer to TM-123, "
Symptom Table". GO TO 5.
5.CHECK “L” POSITION FUNCTION (PART 1)
1. Park vehicle on flat surface.
2. Move selector lever to “L” position.
3. Accelerate vehicle at 2/8 throttle opening and check “Vehicle
Speed When Shifting Gears”.
With CONSULT-III
- Read vehicle speed and engine speed. Refer to TM-174, "Vehi-
cle Speed When Shifting Gears".
Is the inspection result normal?
YES >> GO TO 6.
NO >> Refer to TM-123, "
Symptom Table". GO TO 6.
6.CHECK “L” POSITION FUNCTION (PART 2)
1. Park vehicle on flat surface.
2. Move selector lever to “L” position.
3. Accelerate vehicle at 8/8 throttle opening and check “Vehicle
Speed When Shifting Gears”.
With CONSULT-III
- Read vehicle speed and engine speed. Refer to TM-174, "Vehi-
cle Speed When Shifting Gears".
Is the inspection result normal?
YES >> GO TO 7.
NO >> Refer to TM-123, "
Symptom Table". GO TO 7.
7.CHECK ENGINE BRAKE FUNCTION
Check engine brake.
Does engine braking effectively reduce vehicle speed in
“L” position?
YES >> 1. Stop the vehicle.
2. Perform “Self Diagnostic Results” mode for “TRANSMISSION”.
NO >> Refer to TM-123, "
Symptom Table". Then continue trouble diagnosis.
SCIA4366E
SCIA6644E
SCIA4366E