ECU NISSAN TEANA 2008 Service Manual

TM-146
< ON-VEHICLE MAINTENANCE >[CVT: RE0F09B]
LINE PRESSURE TEST
LINE PRESSURE TEST
Inspection and JudgmentINFOID:0000000003849079
INSPECTION
Line Pressure Test Procedure
1. Inspect the amount of engine oil and replenish if necessary.
2. Drive the car for about 10 minutes to warm it up so that the CVT fluid reaches in the range of 50 to 80°C
(122 to 176°F). Then inspect the amount of CVT fluid and replenish if necessary.
NOTE:
The CVT fluid temperature rises in the range of 50 to 80°C (122 to 176°F) during 10 minutes of driv-
ing.
3. After warming up CVT, remove the oil pressure detection plug
and install the joint pipe adapter (SST: KV31103600), adapter
(SST: 25054000), oil pressure gauge set (commercial service
tool).
CAUTION:
When using the oil pressure gauge, be sure to use the O-
ring attached to the oil pressure detection plug.
4. Securely engage parking brake so that the tires do not turn.
5. Start the engine, and then measure the line pressure at both idle
and the stall speed.
CAUTION:
 Keep brake pedal pressed all the way down during mea-
surement.
 When measuring the line pressure at the stall speed.
Refer to TM-144, "
Inspection and Judgment".
6. Install oil pressure detection plug and tighten to the specified
torque below after the measurements are complete.
CAUTION:
 Never reuse O-ring.
 Apply CVT fluid to O-ring.
JUDGMENT
SCIA7972E
SCIA7463E
Line pressure : Refer to TM-174, "Line Pressure".
: 7.5 N·m (0.77 kg-m, 66 in-lb)
SAT493G

SHIFT CONTROL SYSTEM
TM-197
< FUNCTION DIAGNOSIS >[CVT: RE0F10A]
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SHIFT CONTROL SYSTEM
System DiagramINFOID:0000000003806366
NOTE:
The gear ratio is set for each position separately.
System DescriptionINFOID:0000000003806367
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 and
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 the improved engine braking.
“L” POSITION
By limiting gear range to the lowest position, the strong driving force
and the engine brake can be secured.
DOWNHILL ENGINE BRAKE CONTROL (AUTO ENGINE BRAKE CONTROL)
When a downhill slope 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.
JPDIA0745GB
SCIA1953E
SCIA1955E

TM-204
< FUNCTION DIAGNOSIS >[CVT: RE0F10A]
DIAGNOSIS SYSTEM (TCM)
DIAGNOSIS SYSTEM (TCM)
CONSULT-III Function (TRANSMISSION)INFOID:0000000003806374
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 mode other than “0” and “OFF”. Selecting “+1” or “−1” or “−2” is selected, that
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-284, "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 Diagnosis Support Mon-
itorIt monitors the status of CAN communication.
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.

DIAGNOSIS SYSTEM (TCM)
TM-205
< FUNCTION DIAGNOSIS >[CVT: RE0F10A]
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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) — 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 Not mounted but displayed.
ATFTEMP COUNT — XMeans CVT fluid temperature. Actual oil temper-
ature °C (°F) numeric value is converted. Refer to
TM-301
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

TM-206
< FUNCTION DIAGNOSIS >[CVT: RE0F10A]
DIAGNOSIS SYSTEM (TCM)
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
P POSITION SW (On/Off) X — —
R POSITION SW (On/Off) X — —
N POSITION SW (On/Off) X — —
D POSITION SW (On/Off) X — —
L POSITION SW (On/Off) X — —
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) — — —
LUSEL SOL MON (On/Off) — — —
VDC ON (On/Off) X — —Monitored item (Unit)Monitor item selection
Remarks ECU IN-
PUT SIG-
NALSMAIN SIG-
NALSSELEC-
TION
FROM
MENU

DIAGNOSIS SYSTEM (TCM)
TM-207
< FUNCTION DIAGNOSIS >[CVT: RE0F10A]
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Diagnostic Tool FunctionINFOID:0000000003806375
OBD SELF-DIAGNOSTIC PROCEDURE
Refer to EC-122, "DiagnosisToolFunction".
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.Monitored item (Unit)Monitor item selection
Remarks ECU IN-
PUT SIG-
NALSMAIN SIG-
NALSSELEC-
TION
FROM
MENU

TM-210
< COMPONENT DIAGNOSIS >[CVT: RE0F10A]
P0703 STOP LAMP SWITCH
P0703 STOP LAMP SWITCH
DescriptionINFOID:0000000003806382
BCM detects ON/OFF state of the stop lamp switch and transmits the data to the CVT control unit via CAN
communication by converting the data to a signal.
DTC LogicINFOID:0000000003806383
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
CAUTION:
Always drive vehicle at a safe speed.
NOTE:
If “DTC CONFIRMATION PROCEDURE” has been previously performed, always turn ignition switch
OFF. Then wait at least 10 seconds before performing the next test.
Perform the following procedure to confirm the malfunction is eliminated after the repair.
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. Select “Self Diagnostic Results” mode for “TRANSMISSION”.
Is
“P0703 BRAKE SW/CIRC” detected?
YES >> Go to TM-210, "Diagnosis Procedure".
NO >> Check intermittent incident. Refer to GI-35, "
Intermittent Incident".
Diagnosis ProcedureINFOID:0000000003806384
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

P0705 PARK/NEUTRAL POSITION SWITCH
TM-213
< COMPONENT DIAGNOSIS >[CVT: RE0F10A]
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P0705 PARK/NEUTRAL POSITION SWITCH
DescriptionINFOID:0000000003806386
The PNP switch detects the selector lever position and sends a signal to the TCM.
DTC LogicINFOID:0000000003806387
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
CAUTION:
Always drive vehicle at a safe speed.
NOTE:
If “DTC CONFIRMATION PROCEDURE” has been previously performed, always turn ignition switch
OFF. Then wait at least 10 seconds before performing the next test.
Perform the following procedure to confirm the malfunction is eliminated after the repair.
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-213, "Diagnosis Procedure".
NO >> Check intermittent incident. Refer to GI-35, "
Intermittent Incident".
Diagnosis ProcedureINFOID:0000000003806388
1.CHECK POWER SOURCE
1. Turn ignition switch OFF.
2. Disconnect PNP switch connector.
3. Turn ignition switch ON.
4. Check voltage between PNP switch vehicle side harness connector terminal and ground.
Is the inspection result normal?
YES >> GO TO 2.
NO >> Check the following. If NG, repair or replace damaged parts.
 Harness for short or open between ignition switch and PNP switch
 10 A fuse (No. 4, located in the fuse block J/B)
DTCItem
(CONSULT-III screen term)Malfunction is detected when... Possible cause
P0705 PNP SW/CIRCTCM does not receive the cor-
rect 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 : More than 450 rpm
ACC PEDAL OPEN : More than 1.0/8
PNP switch vehicle side harness connector
GroundVoltage (Approx.)
Connector Terminal
Battery voltage
F57 3

TM-218
< COMPONENT DIAGNOSIS >[CVT: RE0F10A]
P0715 INPUT SPEED SENSOR (PRI SPEED SENSOR)
P0715 INPUT SPEED SENSOR (PRI SPEED SENSOR)
DescriptionINFOID:0000000003806394
The input speed sensor (primary speed sensor) detects the primary pulley revolution speed and sends the sig-
nal to the TCM.
DTC LogicINFOID:0000000003806395
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
CAUTION:
Always drive vehicle at a safe speed.
NOTE:
If “DTC CONFIRMATION PROCEDURE” has been previously performed, always turn ignition switch
OFF. Then wait at least 10 seconds before performing the next test.
Perform the following procedure to confirm the malfunction is eliminated after the repair.
1.CHECK DTC DETECTION
With CONSULT-III
1. Turn ignition switch ON.
2. Select “Data Monitor” mode for “TRANSMISSION”.
3. Start engine and maintain the following conditions for at least 5 consecutive seconds.
With GST
Follow the procedure “With CONSULT-III”.
Is
“P0715 INPUT SPD SEN/CIRC” detected?
YES >> Go to TM-218, "Diagnosis Procedure".
NO >> Check intermittent incident. Refer to GI-35, "
Intermittent Incident".
Diagnosis ProcedureINFOID:0000000003806396
1.CHECK INPUT SPEED SENSOR (PRIMARY SPEED SENSOR)
With CONSULT-III
1. Start engine.
2. Check voltage between TCM connector terminals.
DTCItem
(CONSULT-III screen term)Malfunction is detected when... Possible cause
P0715 INPUT SPD SEN/CIRC Input speed sensor (primary
speed sensor) signal is not in-
put due to an open circuit.
 An unexpected signal is input
when vehicle is being driven. Harness or connectors
(Sensor circuit is open or
shorted.)
 Input speed sensor (primary
speed sensor)
VEHICLE SPEED : 10 km/h (6 MPH) or more
ACC PEDAL OPEN : More than 1.0/8
RANGE : “D” position
ENG SPEED : 450 rpm or more
Driving location : Driving the vehicle uphill (increased engine load) will help maintain the
driving conditions required for this test.
TCM connector
Voltage (Approx.)
ConnectorTe r m i n a l
(+) (−)
F2346
25 Battery voltage
48

TM-222
< COMPONENT DIAGNOSIS >[CVT: RE0F10A]
P0720 VEHICLE SPEED SENSOR CVT (SECONDARY SPEED SENSOR)
P0720 VEHICLE SPEED SENSOR CVT (SECONDARY SPEED SENSOR)
DescriptionINFOID:0000000003806397
The vehicle speed sensor CVT [output speed sensor (secondary speed sensor)] detects the revolution of the
CVT output shaft and emits a pulse signal. The pulse signal is transmitted to the TCM, which converts it into
vehicle speed.
DTC LogicINFOID:0000000003806398
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
CAUTION:
Always drive vehicle at a safe speed.
NOTE:
If “DTC CONFIRMATION PROCEDURE” has been previously performed, always turn ignition switch
OFF. Then wait at least 10 seconds before performing the next test.
Perform the following procedure to confirm the malfunction is eliminated after the repair.
1.CHECK DTC DETECTION
With CONSULT-III
1. Turn ignition switch ON.
2. Select “Data Monitor” mode for “TRANSMISSION”.
3. Start engine and maintain the following conditions for at least 12 consecutive seconds.
With GST
Follow the procedure “With CONSULT-III”.
Is
“P0720 VEH SPD SEN/CIR AT” detected?
YES >> Go to TM-222, "Diagnosis Procedure".
NO >> Check intermittent incident. Refer to GI-35, "
Intermittent Incident".
Diagnosis ProcedureINFOID:0000000003806399
1.CHECK OUTPUT SPEED SENSOR (SECONDARY SPEED SENSOR)
With CONSULT-III
1. Start engine.
2. Check voltage between TCM connector terminals.
DTCItem
(CONSULT-III screen term)Malfunction is detected when... Possible cause
P0720 VEH SPD SEN/CIR AT Signal from vehicle speed
sensor CVT [output speed
sensor (secondary speed
sensor)] is not input due to
open or short circuit.
 Unexpected signal is input
during running. Harness or connectors
(Sensor circuit is open or
shorted.)
 Output speed sensor (sec-
ondary speed sensor)
ACC PEDAL OPEN : More than 1.0/8
RANGE : “D” position
Driving location : Driving the vehicle uphill (increased engine load) will help maintain the
driving conditions required for this test.