Condition NISSAN TEANA 2008 Service Manual

TM-22
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HYDRAULIC CONTROL SYSTEM
 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:0000000003848927
TRANSAXLE ASSEMBLY
EXCEPT TRANSAXLE ASSEMBLY
Name Function
Torque converter regulator valve Optimizes the supply pressure for the torque converter depending on driving conditions.
Pressure regulator valve Optimizes the discharge pressure from the oil pump depending on driving conditions.
TCC control valve Activates or deactivates the lock-up.
 Locks up smoothly by opening lock-up operation excessively.
Shift control valveControls inflow/outflow of line pressure from the primary pulley depending on the stroke
difference between the stepping motor and the primary pulley.
Secondary valve Controls the line pressure from the secondary pulley depending on operating conditions.
Clutch regulator valve Adjusts the clutch operating pressure depending on operating conditions.
Manual valveTransmits the clutch operating pressure to each circuit in accordance with the selected
position.
Select control valve Engages forward clutch, reverse brake smoothly depending on select operation.
Select switch valveThe select switch valve enables to select engagement/disengagement of lock-up clutch
and that of forward clutch and reverse clutch.
TCC solenoid valveTM-62
Secondary pressure solenoid valveTM-72
Line pressure solenoid valveTM-66
Ste p m ot orTM-97
Lock-up select solenoid valveTM-94
Primary speed sensorTM-52
Secondary speed sensorTM-55
PNP switchTM-47
Primary pulley
TM-19
Secondary pulley
Forward clutch
Torque converter
Name Function
TCMJudges driving condition according to signals from each sensor, and optimally controls
variable speed mechanism.
Accelerator pedal position sensorTM-88

CONTROL SYSTEM
TM-23
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CONTROL SYSTEM
System DiagramINFOID:0000000003848928
System DescriptionINFOID:0000000003848929
The CVT senses vehicle operating conditions through various sensors. It always controls the optimum shift
position and reduces shifting and lock-up shocks.
TCM FUNCTION
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.
INPUT/OUTPUT SIGNAL OF TCM
JPDIA0809GB
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
Sport mode switch 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-III communication line
Duet-EA control
CAN system
On board diagnosisStep motor
Torque converter clutch solenoid
valve
Lock-up select solenoid valve
Line pressure solenoid valve
Secondary pressure solenoid valve
SPORT indicator lamp
Shift position indicator
Stater relay

TM-30
< FUNCTION DIAGNOSIS >[CVT: RE0F09B]
SHIFT CONTROL SYSTEM
SHIFT CONTROL SYSTEM
System DiagramINFOID:0000000003848936
NOTE:
The gear ratio is set for each position separately.
System DescriptionINFOID:0000000003848937
In order to select the gear ratio that 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,
selects the optimum gear ratio, and determines the gear change steps to the gear ratio. Then TCM sends the
command to the step motor, controls the inflow/outflow of line pressure from the primary pulley to determine
the position of the moving-pulley and controls the gear ratio.
“D” POSITION
Shifting over all the ranges of gear ratios from the lowest to the high-
est.
SPORT MODE
Use this position for improved engine braking.
“L” POSITION
JPDIA0745GB
SCIA1953E
JPDIA0685GB

SHIFT LOCK SYSTEM
TM-33
< FUNCTION DIAGNOSIS >[CVT: RE0F09B]
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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-42
< COMPONENT DIAGNOSIS >[CVT: RE0F09B]
P0615 START SIGNAL
P0615 START SIGNAL
DescriptionINFOID:0000000003848949
 TCM controls starter relay in IPDM E/R.
 TCM switches starter relay ON at “P” or “N” position and allows to crank engine.
 Then it prohibits cranking other than at “P” or “N” position.
DTC LogicINFOID:0000000003848950
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
CAUTION:
Always drive vehicle at a safe speed.
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. Perform “Self-Diagnostic Results” mode for “TRANSMISSION”.
Is
“P0615 STARTER RELAY/CIRC” detected?
YES >> Go to TM-42, "Diagnosis Procedure".
NO >> Check intermittent incident. Refer to GI-35, "
Intermittent Incident".
Diagnosis ProcedureINFOID:0000000003848951
1.CHECK STARTER RELAY SIGNAL
1. Turn ignition switch ON.
2. Disconnect IPDM E/R harness connector.
3. Check voltage between IPDM E/R vehicle side harness connector terminal and ground.
Is the inspection result normal?
YES >> Check starter relay and starter control relay. Refer to STR-10, "Wiring Diagram - STARTING SYS-
TEM -".
NO >> GO TO 2.
2.CHECK HARNESS BETWEEN TCM AND IPDM E/R (PART 1)
1. Turn ignition switch OFF.
2. Disconnect TCM connector.
3. Check continuity between TCM vehicle side harness connector terminal and IPDM E/R vehicle side har-
ness connector terminal.
DTCItem
(CONSULT-III screen term)Malfunction is detected when... Possible cause
P0615 STARTER RELAY/CIRCIf this signal is ON other than in “P” or “N” po-
sition, this is judged to be a malfunction.
(And if it is OFF in “P” or “N” position, this too
is judged to be a malfunction.) Harness or connectors
(Starter relay and TCM circuit is open or
shorted.)
 Starter relay circuit
IPDM E/R vehicle side harness connector
GroundCondition Voltage (Approx.)
Connector Terminal
F12 72Selector lever in “P” and “N” positions Battery voltage
Selector lever in other positions 0 V

TM-44
< COMPONENT DIAGNOSIS >[CVT: RE0F09B]
P0703 STOP LAMP SWITCH
P0703 STOP LAMP SWITCH
DescriptionINFOID:0000000003848952
BCM detects ON/OFF state of the stop lamp switch and transmits the data to the TCM via CAN communica-
tion by converting the data to a signal.
DTC LogicINFOID:0000000003848953
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
CAUTION:
Always drive vehicle at a safe speed.
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.
3. Drive vehicle for at least 3 consecutive seconds.
4. Perform “Self-Diagnostic Results” mode for “TRANSMISSION”.
Is
“P0703 BRAKE SW/CIRC” detected?
YES >> Go to TM-44, "Diagnosis Procedure".
NO >> Check intermittent incident. Refer to GI-35, "
Intermittent Incident".
Diagnosis ProcedureINFOID:0000000003848954
1.CHECK STOP LAMP SWITCH CIRCUIT
1. Check and adjust the installation position of stop lamp switch. Refer to BR-6, "
Inspection and Adjustment".
2. Disconnect BCM connector.
3. Check voltage between BCM vehicle side harness connector terminal and ground.
Is the inspection result normal?
YES >> GO TO 5.
NO >> GO TO 2.
2.CHECK HARNESS BETWEEN STOP LAMP SWITCH AND BCM (PART 1)
1. Disconnect stop lamp switch connector.
2. Check continuity between stop lamp switch vehicle side harness connector terminal and BCM vehicle side
harness connector terminal.
DTCItem
(CONSULT-III screen term)Malfunction is detected when... Possible cause
P0703 BRAKE SW/CIRCWhen the brake switch does not switch to
ON or OFF. Harness or connectors
- (Stop lamp switch, and BCM circuit are
open or shorted.)
- (CAN communication line is open or
shorted.)
 Stop lamp switch
BCM vehicle side harness connector
GroundCondition Voltage (Approx.)
Connector Terminal
M123 118Depressed brake pedal Battery voltage
Released brake pedal 0 V

P0703 STOP LAMP SWITCH
TM-45
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Is the inspection result normal?
YES >> GO TO 3.
NO >> Repair or replace damaged parts.
3.CHECK HARNESS BETWEEN STOP LAMP SWITCH AND BCM (PART 2)
Check continuity between BCM vehicle side harness connector terminal and ground.
Is the inspection result normal?
YES >> GO TO 4.
NO >> Repair or replace damaged parts.
4.CHECK STOP LAMP SWITCH
Check stop lamp switch. Refer to TM-45, "
Component Inspection (Stop Lamp Switch)".
Is the inspection result normal?
YES >> Check the following.
 Harness for short or open between battery and stop lamp switch
 10A fuse (No. 7, located in fuse block)
NO >> Repair or replace stop lamp switch.
5.CHECK BCM
With CONSULT-III
1. Turn ignition switch OFF.
2. Connect BCM connector.
3. Turn ignition switch ON.
4. Select “BRAKE SW 1” in “Data Monitor” of “BCM” and verify the proper operation of ON/OFF. Refer to
BCS-42, "
Reference Value".
Is the inspection result normal?
YES >> GO TO 6.
NO >> Replace BCM. Refer to BCS-78, "
Removal and Installation".
6.DETECT MALFUNCTIONING ITEMS
Check TCM connector pin terminals for damage or loose connection with harness connector.
Is the inspection result normal?
YES >> Replace TCM. Refer to TM-153, "Exploded View".
NO >> Repair or replace damaged parts.
Component Inspection (Stop Lamp Switch)INFOID:0000000003848955
1.CHECK STOP LAMP SWITCH
Check continuity between stop lamp switch connector terminals.
Is the inspection result normal?
YES >> INSPECTION END
Stop lamp switch vehicle side harness connector BCM vehicle side harness connector
Continuity
Connector Terminal Connector Terminal
E115 2 M123 118 Existed
BCM vehicle side harness connector
GroundContinuity
Connector Terminal
M123 118 Not existed
Stop lamp switch connector terminal
Condition Continuity
Connector Terminal
E115 1 2Depressed brake pedal Existed
Released brake pedal Not existed

P0705 PARK/NEUTRAL POSITION SWITCH
TM-47
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P0705 PARK/NEUTRAL POSITION SWITCH
DescriptionINFOID:0000000003848956
 The PNP switch is included in the control valve assembly.
 The PNP switch includes 4 transmission position switches.
 TCM judges the selector lever position by the PNP switch signal.
DTC LogicINFOID:0000000003848957
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
CAUTION:
Always drive vehicle at a safe speed.
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. Select “Data Monitor” mode for “TRANSMISSION”.
3. Start engine.
4. Drive vehicle and maintain the following conditions for at least 2 consecutive seconds.
With GST
Follow the procedure “With CONSULT-III”.
Is
“P0705 PNP SW/CIRC” detected?
YES >> Go to TM-47, "Diagnosis Procedure".
NO >> Check intermittent incident. Refer to GI-35, "
Intermittent Incident".
Diagnosis ProcedureINFOID:0000000003848958
1.CHECK CVT POSITION
1. Disconnect CVT unit connector.
2. Remove control cable from manual lever. Refer toTM-157, "
Exploded View".
3. Check PNP switch. Refer to TM-48, "
Component Inspection".
Is the inspection result normal?
YES >> Adjust CVT position. Refer to TM-152, "Inspection and Adjustment".
Shift position PNP switch 1 PNP switch 2 PNP switch 3 PNP switch 4 PNP switch 3 (monitor)
P OFF OFF OFF OFF OFF
R ON OFF OFF ON OFF
N ON ON OFF OFF OFF
DONONONON ON
L OFF ON ON OFF ON
DTCItem
(CONSULT-III screen term)Malfunction is detected when... Possible cause
P0705 PNP SW/CIRCTCM does not receive the correct voltage
signal (based on the gear position) from the
switch. Harness or connectors
(PNP switches circuit is open or shorted.)
 PNP switch
VEHICLE SPEED More than 10 km/h (6 MPH)
ENG SPEED SIG : More than 450 rpm
ACC PEDAL OPEN : More than 1.0/8