2008 NISSAN TEANA Control Valve Assembly

P0745 LINE PRESSURE SOLENOID VALVE
TM-235
< COMPONENT DIAGNOSIS >[CVT: RE0F10A]
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Is the inspection result normal?
YES >> GO TO 3.
NO >> Repair or replace damaged parts.
3.CHECK HARNESS BETWEEN TCM AND CVT UNIT [PRESSURE CONTROL SOLENOID VALVE A (LINE
PRESSURE SOLENOID VALVE)] (PART 2)
Check continuity between TCM vehicle side harness connector terminal and ground.
Is the inspection result normal?
YES >> GO TO 4.
NO >> Repair or replace damaged parts.
4.CHECK PRESSURE CONTROL SOLENOID VALVE A (LINE PRESSURE SOLENOID VALVE)
Check pressure control solenoid valve A (line pressure solenoid valve). Refer to TM-235, "
Component Inspec-
tion [Pressure Control Solenoid Valve A (Line Pressure Solenoid Valve)]"
Is the inspection result normal?
YES >> GO TO 5.
NO >> Repair or replace damaged parts.
5.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-315, "Exploded View".
NO >> Repair or replace damaged parts.
Component Inspection [Pressure Control Solenoid Valve A (Line Pressure Solenoid
Va l v e ) ]
INFOID:0000000003806418
1.CHECK PRESSURE CONTROL SOLENOID VALVE A (LINE PRESSURE SOLENOID VALVE)
Check resistance between CVT unit harness connector terminal and ground.
Is the inspection result normal?
YES >> INSPECTION END
NO >> Replace the transaxle assembly. Refer to TM-332, "
Exploded View".
TCM vehicle side harness connector CVT unit vehicle side harness connector
Continuity
Connector Terminal Connector Terminal
F2340F24 2Existed
TCM vehicle side harness connector
GroundContinuity
Connector Terminal
F23 40 Not existed
CVT unit harness connector
GroundResistance (Approx.)
Connector Terminal
F24 2 3.0 – 9.0 Ω

P0746 PRESSURE CONTROL SOLENOID A PERFORMANCE (LINE PRESSURE
SOLENOID VALVE)
TM-237
< COMPONENT DIAGNOSIS >[CVT: RE0F10A]
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Is the inspection result normal?
YES >> GO TO 3.
NO >> Repair or replace damaged parts.
3.CHECK OUTPUT SPEED SENSOR (SECONDARY SPEED SENSOR) SYSTEM
Check output speed sensor (secondary speed sensor) system. Refer to TM-222, "
DTC Logic".
Is the inspection result normal?
YES >> GO TO 4.
NO >> Repair or replace damaged parts.
4.CHECK INPUT SPEED SENSOR (PRIMARY SPEED SENSOR) SYSTEM
Check input speed sensor (primary speed sensor) system. Refer to TM-218, "
DTC Logic".
Is the inspection result normal?
YES >> GO TO 5.
NO >> Repair or replace damaged parts.
5.DETECT MALFUNCTIONING ITEMS
Check TCM connector pin terminals for damage or loose connection with harness connector.
Is the inspection result normal?
YES >> Replace the TCM. Refer to TM-315, "Exploded View".
NO >> Repair or replace damaged parts.
Component Inspection [Pressure Control Solenoid Valve A (Line Pressure Solenoid
Va l v e ) ]
INFOID:0000000003806422
1.CHECK PRESSURE CONTROL SOLENOID VALVE A (LINE PRESSURE SOLENOID VALVE)
Check resistance between CVT unit harness connector terminal and ground.
Is the inspection result normal?
YES >> INSPECTION END
NO >> Replace the transaxle assembly. Refer to TM-332, "
Exploded View".
CVT unit harness connector
GroundResistance (Approx.)
Connector Terminal
F24 2 3.0 – 9.0 Ω

P0776 PRESSURE CONTROL SOLENOID B PERFORMANCE (SEC PRESSURE
SOLENOID VALVE)
TM-239
< COMPONENT DIAGNOSIS >[CVT: RE0F10A]
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2.CHECK PRESSURE CONTROL SOLENOID VALVE B (SECONDARY PRESSURE SOLENOID VALVE)
Check pressure control solenoid valve B (Secondary pressure solenoid valve). Refer to TM-239, "
Component
Inspection [Pressure Control Solenoid Valve B (Secondary Pressure Solenoid Valve)]".
Is the inspection result normal?
YES >> GO TO 3.
NO >> Repair or replace damaged parts.
3.CHECK PRESSURE CONTROL SOLENOID VALVE A (LINE PRESSURE SOLENOID VALVE)
Check pressure control solenoid valve A (Line pressure solenoid valve). Refer to TM-239, "
Component
Inspection [Pressure Control Solenoid Valve A (Line Pressure Solenoid Valve)]".
Is the inspection result normal?
YES >> GO TO 4.
NO >> Repair or replace damaged parts.
4.CHECK TRANSMISSION FLUID PRESSURE SENSOR A (SECONDARY PRESSURE SENSOR) SYS-
TEM
Check transmission fluid pressure sensor A (secondary pressure sensor) system. Refer to TM-242, "
DTC
Logic".
Is the inspection result normal?
YES >> GO TO 5.
NO >> Repair or replace damaged parts.
5.DETECT MALFUNCTIONING ITEMS
Check TCM connector pin terminals for damage or loose connection with harness connector.
Is the inspection result normal?
YES >> Replace the TCM. Refer to TM-315, "Exploded View".
NO >> Repair or replace damaged parts.
Component Inspection [Pressure Control Solenoid Valve A (Line Pressure Solenoid
Va l v e ) ]
INFOID:0000000003806426
1.CHECK PRESSURE CONTROL SOLENOID VALVE A (LINE PRESSURE SOLENOID VALVE)
Check resistance between CVT unit harness connector terminal and ground.
Is the inspection result normal?
YES >> INSPECTION END
NO >> Replace the transaxle assembly. Refer to TM-332, "
Exploded View".
Component Inspection [Pressure Control Solenoid Valve B (Secondary Pressure So-
lenoid Valve)]
INFOID:0000000003806427
1.CHECK PRESSURE CONTROL SOLENOID VALVE B (SECONDARY PRESSURE SOLENOID VALVE)
Check resistance between CVT unit harness connector terminal and ground.
Is the inspection result normal?
YES >> INSPECTION END
NO >> Replace the transaxle assembly. Refer to TM-332, "
Exploded View".
CVT unit harness connector
GroundResistance (Approx.)
Connector Terminal
F24 2 3.0 – 9.0 Ω
CVT unit harness connector
GroundResistance (Approx.)
Connector Terminal
F24 3 3.0 – 9.0 Ω

P0778 PRESSURE CONTROL SOLENOID B ELECTRICAL (SEC PRESSURE
SOLENOID VALVE)
TM-241
< COMPONENT DIAGNOSIS >[CVT: RE0F10A]
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2. Check continuity between TCM vehicle side harness connector terminal and CVT unit vehicle side har-
ness connector terminal.
Is the inspection result normal?
YES >> GO TO 3.
NO >> Repair or replace damaged parts.
3.CHECK HARNESS BETWEEN TCM AND CVT UNIT [PRESSURE CONTROL SOLENOID VALVE B (SEC-
ONDARY PRESSURE SOLENOID VALVE)] (PART 2)
Check continuity between TCM vehicle side harness connector terminal and ground.
Is the inspection result normal?
YES >> GO TO 4.
NO >> Repair or replace damaged parts.
4.CHECK PRESSURE CONTROL SOLENOID VALVE B (SECONDARY PRESSURE SOLENOID VALVE)
Check pressure control solenoid valve B (secondary pressure solenoid valve). Refer to TM-241, "
Component
Inspection [Pressure Control Solenoid Valve B (Secondary Pressure Solenoid Valve)]".
Is the inspection result normal?
YES >> GO TO 5.
NO >> Repair or replace damaged parts.
5.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-315, "Exploded View".
NO >> Repair or replace damaged parts.
Component Inspection [Pressure Control Solenoid Valve B (Secondary Pressure So-
lenoid Valve)]
INFOID:0000000003806431
1.CHECK PRESSURE CONTROL SOLENOID VALVE B (SECONDARY PRESSURE SOLENOID VALVE)
Check resistance between CVT unit harness connector terminal and ground.
Is the inspection result normal?
YES >> INSPECTION END
NO >> Replace the transaxle assembly. Refer to TM-332, "
Exploded View".
TCM vehicle side harness connector CVT unit vehicle side harness connector
Continuity
Connector Terminal Connector Terminal
F2339F24 3Existed
TCM vehicle side harness connector
GroundContinuity
Connector Terminal
F23 39 Not existed
CVT unit harness connector
GroundResistance (Approx.)
Connector Terminal
F24 3 3.0 – 9.0 Ω

TM-246
< COMPONENT DIAGNOSIS >[CVT: RE0F10A]
P0841 PRESSURE SENSOR FUNCTION
Check line pressure solenoid valve. Refer to TM-246, "Component Inspection [Pressure Control Solenoid
Valve A (Line Pressure Solenoid Valve)]".
Is the inspection result normal?
YES >> GO TO 4.
NO >> Repair or replace damaged parts.
4.CHECK PRESSURE CONTROL SOLENOID VALVE B (SECONDARY PRESSURE SOLENOID VALVE)
Check secondary pressure solenoid valve. Refer to TM-246, "
Component Inspection [Pressure Control Sole-
noid Valve B (Secondary Pressure Solenoid Valve)]".
Is the inspection result normal?
YES >> GO TO 5.
NO >> Repair or replace damaged parts.
5.CHECK STEP MOTOR SYSTEM
Check step motor system. Refer to TM-261, "
Description".
Is the inspection result normal?
YES >> GO TO 6.
NO >> Repair or replace damaged parts.
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-315, "Exploded View".
NO >> Repair or replace damaged parts.
Component Inspection [Pressure Control Solenoid Valve A (Line Pressure Solenoid
Va l v e ) ]
INFOID:0000000003806442
1.CHECK PRESSURE CONTROL SOLENOID VALVE A (LINE PRESSURE SOLENOID VALVE)
Check resistance between CVT unit harness connector terminal and ground.
Is the inspection result normal?
YES >> INSPECTION END
NO >> Replace the transaxle assembly. Refer to TM-332, "
Exploded View".
Component Inspection [Pressure Control Solenoid Valve B (Secondary Pressure So-
lenoid Valve)]
INFOID:0000000003806443
1.CHECK PRESSURE CONTROL SOLENOID VALVE B (SECONDARY PRESSURE SOLENOID VALVE)
Check resistance between CVT unit harness connector terminal and ground.
Is the inspection result normal?
YES >> INSPECTION END
NO >> Replace the transaxle assembly. Refer to TM-332, "
Exploded View".
CVT unit harness connector
GroundResistance (Approx.)
Connector Terminal
F24 2 3.0 – 9.0 Ω
CVT unit harness connector
GroundResistance (Approx.)
Connector Terminal
F24 3 3.0 – 9.0 Ω

TM-248
< COMPONENT DIAGNOSIS >[CVT: RE0F10A]
P0868 SECONDARY PRESSURE DOWN
2.CHECK PRESSURE CONTROL SOLENOID VALVE B (SECONDARY PRESSURE SOLENOID VALVE)
Check pressure control solenoid valve B (secondary pressure solenoid valve). Refer to TM-248, "
Component
Inspection [Pressure Control Solenoid Valve B (Secondary Pressure Solenoid Valve)]".
Is the inspection result normal?
YES >> GO TO 3.
NO >> Repair or replace damaged parts.
3.CHECK PRESSURE CONTROL SOLENOID VALVE A (LINE PRESSURE SOLENOID VALVE)
Check pressure control solenoid valve A (line pressure solenoid valve). Refer to TM-248, "
Component Inspec-
tion [Pressure Control Solenoid Valve A (Line Pressure Solenoid Valve)]".
Is the inspection result normal?
YES >> GO TO 4.
NO >> Repair or replace damaged parts.
4.CHECK TRANSMISSION FLUID PRESSURE SENSOR A (SECONDARY PRESSURE SENSOR) SYS-
TEM
Check transmission fluid pressure sensor A (secondary pressure sensor) system. Refer to TM-242, "
Descrip-
tion".
Is the inspection result normal?
YES >> GO TO 5.
NO >> Repair or replace damaged parts.
5.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-315, "Exploded View".
NO >> Repair or replace damaged parts.
Component Inspection [Pressure Control Solenoid Valve A (Line Pressure Solenoid
Va l v e ) ]
INFOID:0000000003806447
1.CHECK PRESSURE CONTROL SOLENOID VALVE A (LINE PRESSURE SOLENOID VALVE)
Check resistance between CVT unit harness connector terminal and ground.
Is the inspection result normal?
YES >> INSPECTION END
NO >> Replace the transaxle assembly. Refer to TM-332, "
Exploded View".
Component Inspection [Pressure Control Solenoid Valve B (Secondary Pressure So-
lenoid Valve)]
INFOID:0000000003806448
1.CHECK PRESSURE CONTROL SOLENOID VALVE B (SECONDARY PRESSURE SOLENOID VALVE)
Check resistance between CVT unit harness connector terminal and ground.
Is the inspection result normal?
YES >> INSPECTION END
NO >> Replace the transaxle assembly. Refer to TM-332, "
Exploded View".
CVT unit harness connector
GroundResistance (Approx.)
Connector Terminal
F24 2 3.0 – 9.0 Ω
CVT unit harness connector
GroundResistance (Approx.)
Connector Terminal
F24 3 3.0 – 9.0 Ω

TM-284
< ECU DIAGNOSIS >[CVT: RE0F10A]
TCM
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 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 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 5000
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, secondary
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 to the TCM, the pressure control solenoid A (line pressure
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 to the TCM, the pressure control solenoid B (secondary pres-
sure 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 to the TCM, the torque converter clutch solenoid valve is
turned OFF to cancel the lock-up.
Step Motor
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 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 TCM. Normal status is restored when turning the ignition switch
OFF to ON after the normal power supply.
DTC Inspection Priority ChartINFOID:0000000003806490
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 TM-208
.
DTC IndexINFOID:0000000003806491
NOTE:
Priority Detected items (DTC)
1 U1000 CAN communication line
2 Except above

SYSTEM SYMPTOM
TM-287
< SYMPTOM DIAGNOSIS >[CVT: RE0F10A]
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Slips/Will
Not EngageVehicle cannot be
started from “D” posi-
tion.ON vehicle1. CVT fluid level and stateTM-304
2. CVT positionTM-314
3. CAN communication lineTM-208
4. Line pressure testTM-308
5. Stall testTM-306
6. Step motorTM-261
7. Primary speed sensorTM-218
8. Secondary speed sensorTM-222
9. Accelerator pedal position sensorTM-252
10. CVT fluid temperature sensorTM-216
11. Secondary pressure sensorTM-242
12. Power supplyTM-249
OFF vehicle13. Oil pump assembly
TM-33214. Forward clutch
15. Control valve
16. Parking components
5Vehicle cannot be
started from “R” posi-
tion.ON vehicle1. CVT fluid level and stateTM-304
2. CVT positionTM-314
3. CAN communication lineTM-208
4. Line pressure testTM-308
5. Stall testTM-306
6. Step motorTM-261
7. Primary speed sensorTM-218
8. Secondary speed sensorTM-222
9. Accelerator pedal position sensorTM-252
10. CVT fluid temperature sensorTM-216
11. Secondary pressure sensorTM-242
12. Power supplyTM-249
OFF vehicle13. Oil pump assembly
TM-33214. Reverse brake
15. Control valve
16. Parking components No
.Item Symptom Condition Diagnostic Item Reference