2008 NISSAN TEANA Trans

TM-244
< COMPONENT DIAGNOSIS >[CVT: RE0F10A]
P0840 TRANSMISSION FLUID PRESSURE SENSOR A (SEC PRESSURE SEN-
SOR)
Is the inspection result normal?
YES >> GO TO 7.
NO >> Repair or replace damaged parts.
7.CHECK TCM
1. Replace with the same type of TCM. Refer to TM-315, "
Exploded View".
2. Connect each connector.
3. Perform “DTC CONFIRMATION PROCEDURE”. Refer to TM-242, "
DTC Logic".
Is
“P0840 TR PRS SENS/A CIRC” detected?
YES >> Replace transaxle assembly. Refer to TM-332, "Exploded View".
NO >> Replace TCM. Refer to TM-315, "
Exploded View".
8.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.
TCM vehicle side harness connector
GroundContinuity
Connector Terminal
F2325
Not existed
26

P0841 PRESSURE SENSOR FUNCTION
TM-245
< COMPONENT DIAGNOSIS >[CVT: RE0F10A]
C
E
F
G
H
I
J
K
L
MA
B
TM
N
O
P
P0841 PRESSURE SENSOR FUNCTION
DescriptionINFOID:0000000003806439
Using the engine load (throttle position), the primary pulley revolution speed, and the secondary pulley revolu-
tion speed as input signals, TCM changes the operating pressure of the primary pulley and the secondary pul-
ley and changes the groove width of the pulley to control the gear ratio.
DTC LogicINFOID:0000000003806440
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.
Is
“P0841 PRESS SEN/FNCTN” detected?
YES >> Go to TM-245, "Diagnosis Procedure".
NO >> Check intermittent incident. Refer to GI-35, "
Intermittent Incident".
Diagnosis ProcedureINFOID:0000000003806441
1.CHECK LINE PRESSURE
Perform line pressure test. Refer to TM-308, "
Inspection and Judgment".
Is the inspection result normal?
YES >> GO TO 2.
NO >> Repair or replace damaged parts. Refer to TM-308, "
Inspection and Judgment".
2.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 3.
NO >> Repair or replace damaged parts.
3.CHECK PRESSURE CONTROL SOLENOID VALVE A (LINE PRESSURE SOLENOID VALVE)
DTCItem
(CONSULT-III screen term)Malfunction is detected when... Possible cause
P0841 PRESS SEN/FNCTNSecondary pressure became
higher than line pressure. Transmission fluid pressure
sensor A (secondary pres-
sure sensor)
 Harness or connectors
(Sensor circuit is open or
shorted.)
VEHICLE SPEED : 40 km/h (25 MPH) More than
RANGE : “D” position

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

P0868 SECONDARY PRESSURE DOWN
TM-247
< COMPONENT DIAGNOSIS >[CVT: RE0F10A]
C
E
F
G
H
I
J
K
L
MA
B
TM
N
O
P
P0868 SECONDARY PRESSURE DOWN
DescriptionINFOID:0000000003806444
The pressure control solenoid valve B (secondary pressure solenoid valve) regulates the secondary pressure
to suit the driving condition in response to the signal sent from the TCM.
DTC LogicINFOID:0000000003806445
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. Make sure that output voltage of CVT fluid temperature sensor is within the range specified below.
4. Start engine and maintain the following conditions for at least 10 consecutive seconds.
Is
“P0868 SEC/PRESS DOWN” detected?
YES >> Go to TM-247, "Diagnosis Procedure".
NO >> Check intermittent incident. Refer to GI-35, "
Intermittent Incident".
Diagnosis ProcedureINFOID:0000000003806446
1.CHECK LINE PRESSURE
Perform line pressure test. Refer to TM-308, "
Inspection and Judgment".
Is the inspection result normal?
YES >> GO TO 2.
NO >> Repair or replace damaged parts. Refer to TM-308, "
Inspection and Judgment".
DTCItem
(CONSULT-III screen term)Malfunction is detected when... Possible cause
P0868 SEC/PRESS DOWNSecondary fluid pressure is too
low compared with the com-
manded value while driving. Harness or connectors
(Solenoid circuit is open or
shorted.)
 Pressure control solenoid
valve B (secondary pressure
solenoid valve) system
 Transmission fluid pressure
sensor A (secondary pres-
sure sensor)
 Line pressure control system
ATF TEMP SEN : 1.0 – 2.0 V
If it is out of range, drive the vehicle to decrease the voltage (warm up the fluid) or stop engine to increase the
voltage (cool down the fluid)
VEHICLE SPEED (accelerate
slowly): 0 → 50 km/h (31 MPH)
ACC PEDAL OPEN : 0.5/8 – 1.0/8
RANGE : “D” position

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

P1701 TRANSMISSION CONTROL MODULE (POWER SUPPLY)
TM-249
< COMPONENT DIAGNOSIS >[CVT: RE0F10A]
C
E
F
G
H
I
J
K
L
MA
B
TM
N
O
P
P1701 TRANSMISSION CONTROL MODULE (POWER SUPPLY)
DescriptionINFOID:0000000003806449
When the power supply to the TCM is cut off, for example because the battery is removed, and the self-diag-
nosis memory function stops, a malfunction is detected.
NOTE:
Since “P1701 TCM-POWER SUPPLY” will be indicated when replacing TCM, perform diagnosis after
erasing “SELF-DIAG RESULTS”.
DTC LogicINFOID:0000000003806450
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
NOTE:
If “DTC CONFIRMATION PROCEDURE” has been previously conducted, always turn ignition switch
OFF. Then wait at least 10 seconds before conducting 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. Wait for at least 2 consecutive seconds.
3. Select “Self Diagnostic Results” mode for “TRANSMISSION”.
Is
“P1701 TCM-POWER SUPPLY” detected?
YES >> Go to TM-249, "Diagnosis Procedure".
NO >> Check intermittent incident. Refer to GI-35, "
Intermittent Incident".
Diagnosis ProcedureINFOID:0000000003806451
1.CHECK TCM POWER SOURCE
1. Turn ignition switch OFF.
2. Disconnect TCM connector.
3. Check voltage between TCM vehicle side harness connector terminals.
DTCItem
(CONSULT-III screen term)Malfunction is detected when... Possible cause
P1701 TCM-POWER SUPPLY When the power supply to the
TCM is cut off, for example
because the battery is re-
moved, and the self-diagno-
sis memory function stops.
 This is not a malfunction
message (Whenever shutting
off a power supply to the
TCM, this message appears
on the screen). Harness or connectors
(Battery or ignition switch and
TCM circuit is open or short-
ed.)

TM-250
< COMPONENT DIAGNOSIS >[CVT: RE0F10A]
P1701 TRANSMISSION CONTROL MODULE (POWER SUPPLY)
Is the inspection result normal?
YES >> GO TO 6.
NO >> GO TO 2.
2.CHECK TCM GROUND CIRCUIT
1. Turn ignition switch OFF.
2. Check continuity between TCM vehicle side harness connector terminals and ground.
Is the inspection result normal?
YES >> GO TO 3.
NO >> Repair or replace damaged parts.
3.CHECK TCM POWER CIRCUIT
Check voltage between TCM vehicle side harness connector terminals and ground.
Is the inspection result normal?
YES >> GO TO 7.
NO >> GO TO 4.
4.CHECK HARNESS BETWEEN TCM AND IPDM E/R AND BETWEEN TCM AND BATTERY (PART 1)
1. Turn ignition switch OFF.
2. Disconnect IPDM E/R connector.
3. Check continuity between TCM vehicle side harness connector terminals and IPDM E/R vehicle side har-
ness connector terminal.
TCM vehicle side harness connector
Condition Voltage (Approx.)
ConnectorTe r m i n a l
(+) (−)
F2346
5, 42Ignition switch ON Battery voltage
Ignition switch OFF 0 V
48Ignition switch ON Battery voltage
Ignition switch OFF 0 V
45
Always Battery voltage
47
TCM vehicle side harness connector
GroundContinuity
Connector Terminal
F235
Existed
42
TCM vehicle side harness connector
GroundCondition Voltage (Approx.)
Connector Terminal
F2346Ignition switch ON Battery voltage
Ignition switch OFF 0 V
48Ignition switch ON Battery voltage
Ignition switch OFF 0 V
45
Always Battery voltage
47
TCM vehicle side harness connector IPDM E/R vehicle side harness connector
Continuity
Connector Terminal Connector Terminal
F2346
F12 58 Existed
48

P1701 TRANSMISSION CONTROL MODULE (POWER SUPPLY)
TM-251
< COMPONENT DIAGNOSIS >[CVT: RE0F10A]
C
E
F
G
H
I
J
K
L
MA
B
TM
N
O
P
4. Disconnect fuse block J/B connector.
5. Check continuity between TCM vehicle side harness connector terminals and fuse block J/B vehicle side
harness connector terminal.
Is the inspection result normal?
YES >> GO TO 5.
NO >> Repair or replace damaged parts.
5.CHECK HARNESS BETWEEN TCM AND IPDM E/R AND BETWEEN TCM AND BATTERY (PART 3)
1. Disconnect fuse block J/B connector.
2. Check continuity between TCM vehicle side harness connector terminals and fuse block J/B vehicle side
harness connector terminal.
Is the inspection result normal?
YES >> GO TO 6.
NO >> Repair or replace damaged parts.
6.CHECK HARNESS BETWEEN TCM AND IPDM E/R AND BETWEEN TCM AND BATTERY (PART 3)
Check continuity between TCM vehicle side harness connector terminals and ground.
Is the inspection result normal?
YES >> Check the following. If NG, repair or replace damaged parts.
 10 A fuse (No. 43, located in IPDM E/R)
 10 A fuse (No. 11, located in fuse block J/B)
 Ignition switch. Refer to PG-10, "
Wiring Diagram - BATTERY POWER SUPPLY -".
NO >> Repair or replace damaged parts.
7.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.
TCM vehicle side harness connector Fuse block J/B vehicle side harness connector
Continuity
Connector Terminal Connector Terminal
F2345
E103 12F Existed
47
TCM vehicle side harness connector Fuse block J/B vehicle side harness connector
Continuity
Connector Terminal Connector Terminal
F2345
E103
12F Existed
46
TCM vehicle side harness connector
GroundContinuity
Connector Terminal
F2345
Not existed 46
47
48