cvt NISSAN TEANA 2008 Manual Online

TM-32
< FUNCTION DIAGNOSIS >[CVT: RE0F09B]
SHIFT CONTROL SYSTEM
*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
 CVT fluid temperature sensor
 Secondary pressure sensor
ROM assembly
Component DescriptionINFOID:0000000003848939
TRANSAXLE ASSEMBLY
EXCEPT TRANSAXLE ASSEMBLY
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. Control device B. Combination meter C. Engine room LH
D. CVT assembly E. Accelerator pedal, upper
Item Function
PNP switchTM-47
Primary speed sensorTM-52
Secondary speed sensorTM-55
Ste p m ot orTM-97
Shift control valveTM-22
Primary pulleyTM-19
Secondary pulleyTM-19
Item Function
TCMTM-22

SHIFT LOCK SYSTEM
TM-33
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SHIFT LOCK SYSTEM
System DescriptionINFOID:0000000003848940
The shift lever 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 position 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 ful-
filled. (However, selector operation is allowed if the shift lock release
button 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 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)
JPDIA0624GB
JPDIA0612ZZ
JPDIA0613ZZ

TM-34
< FUNCTION DIAGNOSIS >[CVT: RE0F09B]
SHIFT LOCK SYSTEM
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:0000000003848941
Component DescriptionINFOID:0000000003848942
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
TM-103
Lock lever
Detent rod
Park position switch
Shift lock release button

ON BOARD DIAGNOSTIC (OBD) SYSTEM
TM-35
< FUNCTION DIAGNOSIS >[CVT: RE0F09B]
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ON BOARD DIAGNOSTIC (OBD) SYSTEM
Diagnosis DescriptionINFOID:0000000003848943
DESCRIPTION
The CVT system has two self-diagnostic systems.
The first is the emission-related on board diagnostic system (OBD) performed by the TCM in combination with
the ECM. A malfunction is indicated by the MI (Malfunction Indicator) and is stored as a DTC in the ECM mem-
ory and in the TCM memory.
The second is the TCM original self-diagnosis performed by the TCM. A malfunction history is stored in the
TCM memory. The detected items are overlapped with OBD self-diagnostic items. For details, refer to TM-121,
"DTC Index".
OBD FUNCTION
The ECM provides emission-related on board diagnostic (OBD) functions for the CVT system. One function is
to receive a signal from the TCM used with OBD-related parts of the CVT system. The signal is sent to the
ECM when a malfunction occurs in the corresponding OBD-related part. The other function is to indicate a
diagnostic result by means of the MI (Malfunction Indicator) on the instrument panel. Sensors, switches and
solenoid valves are used as sensing elements.
The MI automatically illuminates in “One or Two Trip Detection Logic” when a malfunction is sensed in relation
to CVT system parts.
ONE OR TWO TRIP DETECTION LOGIC OF OBD
One Trip Detection Logic
If a malfunction is sensed during the first test drive, the MI illuminates and the ECM memory stores the mal-
function as a DTC. The TCM is not provided with such a memory function.
Two Trip Detection Logic
When a malfunction is sensed during the first test drive, it is stored in the ECM memory as a 1st trip DTC
(diagnostic trouble code) or 1st trip freeze frame data. At this point, the MI does not illuminate. — 1st trip
If the same malfunction as that experienced during the first test drive is sensed during the second test drive,
the MI will illuminate. — 2nd trip
The “trip” in the “One or Two Trip Detection Logic” means a driving mode in which self-diagnosis is performed
during vehicle operation.
OBD DIAGNOSTIC TROUBLE CODE (DTC)
How to Read DTC and 1st Trip DTC
DTC and 1st trip DTC can be read by the following methods.
( with CONSULT-III or GST) CONSULT-III or GST (Generic Scan Tool) Examples: P0705, P0720, etc.
These DTC are prescribed by ISO 15031-6.
(CONSULT-III also displays the malfunctioning component or system.)
1st trip DTC No. is the same as DTC No.
Output of the diagnostic trouble code indicates that the indicated circuit has a malfunction. How-
ever, in case of the Mode II and GST, they do not indicate whether the malfunction is still occurring or
it occurred in the past and has returned to normal.
CONSULT-III can identify them as shown below, therefore, CONSULT-III (if available) is recom-
mended.
- DTC or 1st trip DTC of a malfunction is displayed in “Self-Diagnostic Results” mode for “ENGINE” with CON-
SULT-III. Time data indicates how many times the vehicle was driven after the last detection of a DTC.
- If the DTC is being detected currently, the time data will be “0”.
- If a 1st trip DTC is stored in the ECM, the time data will be “1t”.
Freeze Frame Data and 1st Trip Freeze Frame Data The ECM has a memory function, which stores the driving conditions such as fuel system status, calculated
load value, engine coolant temperature, short-term fuel trim, long-term fuel trim, engine speed and vehicle
speed at the moment the ECM detects a malfunction.
Data that are stored in the ECM memory, along with the 1st trip DTC, are called 1st trip freeze frame data,
and the data, stored together with the DTC data, are called freeze frame data and displayed on CONSULT-
III or GST. The 1st trip freeze frame data can only be displayed on the CONSULT-III screen, not on the GST.
For details, refer to EC-113, "
CONSULT-III Function".

TM-36
< FUNCTION DIAGNOSIS >[CVT: RE0F09B]
ON BOARD DIAGNOSTIC (OBD) SYSTEM
Only one set of freeze frame data (either 1st trip freeze frame data or freeze frame data) can be stored in the
ECM. 1st trip freeze frame data is stored in the ECM memory along with the 1st trip DTC. There is no priority
for 1st trip freeze frame data, and it is updated each time a different 1st trip DTC is detected. However, once
freeze frame data (2nd trip detection/MI on) is stored in the ECM memory, 1st trip freeze frame data is no
longer stored. Remember, only one set of freeze frame data can be stored in the ECM. The ECM has the fol-
lowing priorities to update the data.
Both 1st trip freeze frame data and freeze frame data (along with the DTC) are cleared when the ECM mem-
ory is erased.
How to Erase DTC
 The diagnostic trouble code can be erased by CONSULT-III, GST or ECM DIAGNOSTIC TEST MODE as
described below.
-If the battery cable is disconnected, the diagnostic trouble code will be lost within 24 hours.
-When erasing the DTC, using CONSULT-III or GST is easier and quicker than switching the mode
selector on the ECM.
 The following emission-related diagnostic information is cleared from the ECM memory when erasing DTC
related to OBD. For details, refer to EC-389, "
DTCIndex".
-Diagnostic trouble codes (DTC)
-1st trip diagnostic trouble codes (1st trip DTC)
-Freeze frame data
-1st trip freeze frame data
-System readiness test (SRT) codes
-Test values
How to Erase DTC (With CONSULT-III)
The emission related diagnostic information in the TCM and ECM can be erased by selecting “ALL Erase” in
the “Description” of “FINAL CHECK” mode with CONSULT-III.
How to Erase DTC (With GST)
1. If the ignition switch stays ON after repair work, be sure to turn ignition switch OFF once. Wait at least 10
seconds and then turn it ON (engine stopped) again.
2. Select Mode 4 with GST (Generic Scan Tool). For details, refer to EC-113, "
CONSULT-III Function".
MALFUNCTION INDICATOR (MI)
Description
The MI is located on the instrument panel.
1. The MI is turned ON when the ignition switch is turned ON with-
out the engine running. This is a bulb check.
 If the MI is not turned ON, refer to EC-346, "
Component Func-
tion Check".
2. The MI is turned OFF when the engine is started.
If the MI remains ON, the on board diagnostic system has
detected an engine system malfunction.
Priority Items
1
Freeze frame dataMisfire — DTC: P0300 - P0306
Fuel Injection System Function — DTC: P0171, P0172, P0174, P0175
2 Except the above items (Includes CVT related items)
3 1st trip freeze frame data
SAT652J

DIAGNOSIS SYSTEM (TCM)
TM-37
< FUNCTION DIAGNOSIS >[CVT: RE0F09B]
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DIAGNOSIS SYSTEM (TCM)
CONSULT-III Function (TRANSMISSION)INFOID:0000000003848944
FUNCTION
CONSULT-III can display each diagnostic item using the diagnostic test modes shown following.
WORK SUPPORT MODE
Display Item List
Engine Brake Adjustment
CAUTION:
Mode of “+1”“0”“−1”“−2”“OFF” can be selected by touching “UP”or “DOWN” on CONSULT-III screen.
However, do not select a mode other than “0” and “OFF”. Selecting “+1” or “−1” or “–2” may cause
irregular driveability.
Check CVT Fluid Deterioration Date
CAUTION:
Touch “CLEAR” after changing CVT fluid, and then erase “CVTF DETERIORATION DATE”.
SELF-DIAGNOSTIC RESULT MODE
Display Items List
Refer to TM-121, "DTC Index".
DATA MONITOR MODE
Display Items List
Diagnostic test mode Function
Work Support This mode enables a technician to adjust some devices faster and more accurately.
Self-Diagnostic Results Retrieve DTC from ECU and display diagnostic items.
Data Monitor Monitor the input/output signal of the control unit in real time.
CAN Diagnosis This mode displays a network diagnosis result about CAN by a diagram.
CAN Diagnostic Support Monitor It monitors the status of CAN communication.
Function TestThis mode can show results of self-diagnosis of ECU with either “OK” or “NG”. For en-
gine, more practical tests regarding sensors/switches and/or actuators are available.
ECU Identification Display the ECU identification number (part number etc.) of the selected system.
Special Function Other results or histories, etc. that are recorded in ECU are displayed.
Item name Description
ENGINE BRAKE ADJ. The engine brake level setting can be canceled.
CONFORM CVTF DETERIORTN The CVT fluid deterioration level can be checked.
“ENGINE BRAKE LEVEL”
0 : Initial set value (Engine brake level control is activated)
OFF : Engine brake level control is deactivated.
“CVTF DETERIORATION DATE”
More than 210000 : It is necessary to change CVT fluid.
Less than 210000 : It is not necessary to change CVT fluid.

TM-38
< FUNCTION DIAGNOSIS >[CVT: RE0F09B]
DIAGNOSIS SYSTEM (TCM)
X: Standard, —: Not applicable, : Option
Monitored item (Unit)Monitor item selection
Remarks ECU IN-
PUT SIG-
NALSMAIN SIG-
NALSSELEC-
TION
FROM
MENU
VSP SENSOR (km/h) X — Output speed sensor (secondary speed sensor)
ESTM VSP SIG (km/h) X — —
PRI SPEED SEN (rpm) X — —
ENG SPEED SIG (rpm) X — —
SEC HYDR SEN (V) X — —
PRI HYDR SEN (V) X — —
ATF TEMP SEN (V) X — CVT fluid temperature sensor
VIGN SEN (V) X — —
VEHICLE SPEED (km/h or mph) — X Vehicle speed recognized by the TCM.
PRI SPEED (rpm) — X Primary pulley speed
SEC SPEED (rpm) — — Secondary pulley speed
ENG SPEED (rpm) — X —
SLIP REV (rpm) — XDifference between engine speed and primary
pulley speed.
GEAR RATIO — X —
G SPEED (G) — — —
ACC PEDAL OPEN (0.0/8) X XDegree of opening for accelerator recognized by
the TCM.
For fail-safe operation, the specific value used for
control is displayed.
TRQ RTO — — —
SEC PRESS (MPa) — X —
PRI PRESS (MPa) — X —
ATFTEMP COUNT — XMeans CVT fluid temperature. Actual oil temper-
ature °C (°F) cannot be checked unless a numeric
value is converted. Refer to TM-139
.
DSR REV (rpm) — — —
DGEAR RATIO — — —
DSTM STEP (step) — — —
STM STEP (step) — X —
LU PRS (MPa) — — —
LINE PRS (MPa) — — —
TGT SEC PRESS (MPa) — — —
ISOLT1 (A) — XTorque converter clutch solenoid valve output
current
ISOLT2 (A) — XPressure control solenoid valve A (line pressure
solenoid valve) output current
ISOLT3 (A) — XPressure control solenoid valve B (secondary
pressure solenoid valve) output current

DIAGNOSIS SYSTEM (TCM)
TM-39
< FUNCTION DIAGNOSIS >[CVT: RE0F09B]
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SOLMON1 (A) X XTorque converter clutch solenoid valve monitor
current
SOLMON2 (A) X XPressure control solenoid valve A (line pressure
solenoid valve) monitor current
SOLMON3 (A) X XPressure control solenoid valve B (secondary
pressure solenoid valve) monitor current
INH SW3M (On/Off) X — PNP switch 3 ON-OFF status monitor
INH SW4 (On/Off) X — PNP switch 4 ON-OFF status
INH SW3 (On/Off) X — PNP switch 3 ON-OFF status
INH SW2 (On/Off) X — PNP switch 2 ON-OFF status
INH SW1 (On/Off) X — PNP switch 1 ON-OFF status
BRAKE SW (On/Off) X XStop lamp switch (signal input via CAN communi-
cations)
FULL SW (On/Off) X X
Signal input via CAN communications IDLE SW (On/Off) X X
SPORT MODE SW (On/Off) X X
STRDWNSW (On/Off) X —
Not mounted but displayed. STRUPSW (On/Off) X —
DOWNLVR (On/Off) X —
UPLVR (On/Off) X —
NONMMODE (On/Off) X —
MMODE (On/Off) X —
INDLRNG (On/Off) — — “L” position indicator output
INDDRNG (On/Off) — — “D” position indicator output
INDNRNG (On/Off) — — “N” position indicator output
INDRRNG (On/Off) — — “R” position indicator output
INDPRNG (On/Off) — — “P” position indicator output
CVT LAMP (On/Off) — — —
SPORT MODE IND (On/Off) — — —
MMODE IND (On/Off) — — Not mounted but displayed.
SMCOIL D (On/Off) — — Step motor coil “D” energizing status
SMCOIL C (On/Off) — — Step motor coil “C” energizing status
SMCOIL B (On/Off) — — Step motor coil “B” energizing status
SMCOIL A (On/Off) — — Step motor coil “A” energizing status
LUSEL SOL OUT (On/Off) — — —
REV LAMP (On/Off) — X —
STRTR RLY OUT (On/Off) — — Starter relayMonitored item (Unit)Monitor item selection
Remarks ECU IN-
PUT SIG-
NALSMAIN SIG-
NALSSELEC-
TION
FROM
MENU

TM-40
< FUNCTION DIAGNOSIS >[CVT: RE0F09B]
DIAGNOSIS SYSTEM (TCM)
Diagnostic Tool Function
INFOID:0000000003848945
OBD SELF-DIAGNOSTIC PROCEDURE
Refer to EC-122, "DiagnosisToolFunction".
LUSEL SOL MON (On/Off) — — —
STRTR RLY MON (On/Off) — — Starter relay monitor
VDC ON (On/Off) X — —
TCS ON (On/Off) X — —
ABS ON (On/Off) X — —
ACC ON (On/Off) X — Not mounted but displayed.
RANGE — XIndicates position is recognized by TCM. Indi-
cates a specific value required for control when
fail-safe function is activated.
M GEAR POS — X Not mounted but displayed.
Voltage (V) — —Displays the value measured by the voltage
probe.
Frequency (Hz) — —
The value measured by the pulse probe is dis-
played. DUTY-HI (high) (%) — —
DUTY-LOW (low) (%) — —
PLS WIDTH-HI (ms) — —
PLS WIDTH-LOW (ms) — —Monitored item (Unit)Monitor item selection
Remarks ECU IN-
PUT SIG-
NALSMAIN SIG-
NALSSELEC-
TION
FROM
MENU

U1000 CAN COMM CIRCUIT
TM-41
< COMPONENT DIAGNOSIS >[CVT: RE0F09B]
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COMPONENT DIAGNOSIS
U1000 CAN COMM CIRCUIT
DescriptionINFOID:0000000003848946
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 malfunction detection ability.
Many electronic 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 con-
nected with 2 communication lines (CAN-H and CAN-L) allowing a high rate of information transmission with
less wiring. Each control unit transmits/receives data but selectively reads required data only.
DTC LogicINFOID:0000000003848947
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
NOTE:
Immediately after performing any “DTC CONFIRMATION PROCEDURE”, always turn ignition switch OFF.
Then wait at least 10 seconds before performing the next test.
1.CHECK DTC DETECTION
With CONSULT-III
1. Turn ignition switch ON.
2. Start engine and wait for at least 6 seconds.
3. Perform “Self-Diagnostic Results” mode for “TRANSMISSION”.
With GST
Follow the procedure “With CONSULT-III”.
Is
“U1000 CAN COMM CIRCUIT” detected?
YES >> Go to TM-41, "Diagnosis Procedure".
NO >> Check intermittent incident. Refer to GI-35, "
Intermittent Incident".
Diagnosis ProcedureINFOID:0000000003848948
1.CHECK CAN COMMUNICATION CIRCUIT
With CONSULT-III
1. Turn ignition switch ON and start engine.
2. Perform “Self-Diagnostic Results” mode for “TRANSMISSION”.
Is
“U1000 CAN COMM CIRCUIT” indicated?
YES >> Go to LAN section. Refer to LAN-22, "CAN System Specification Chart".
NO >> Check intermittent incident. Refer to GI-35, "
Intermittent Incident".
DTCItem
(CONSULT-III screen term)Malfunction is detected when... Possible cause
U1000 CAN COMM CIRCUITWhen TCM is not transmitting or receiving
CAN communication signal for 2 seconds or
more.Harness or connectors
(CAN communication line is open or short-
ed.)