NISSAN TEANA 2008 Service Manual

TM-78
< COMPONENT DIAGNOSIS >[CVT: RE0F09B]
P0841 PRESSURE SENSOR FUNCTION
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)
1. Turn ignition switch OFF.
2. Disconnect CVT unit connector.
3. Check pressure control solenoid valve A (line pressure solenoid valve). Refer to TM-78, "
Component
Inspection [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.CHECK PRESSURE CONTROL SOLENOID VALVE B (SECONDARY PRESSURE SOLENOID VALVE)
Check pressure control solenoid valve B (secondary pressure solenoid valve). Refer to TM-78, "
Component
Inspection [Pressure Control Solenoid Valve B (Secondary Pressure Solenoid Valve)]".
Is the inspection result normal?
YES >> GO TO 6.
NO >> Repair or replace damaged parts.
6.CHECK STEP MOTOR SYSTEM
Check step motor system. Refer to TM-97, "
Description".
Is the inspection result normal?
YES >> GO TO 7.
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-153, "Exploded View".
NO >> Repair or replace damaged parts.
Component Inspection [Pressure Control Solenoid Valve A (Line Pressure Solenoid
Va l v e ) ]
INFOID:0000000003849008
1.CHECK PRESSURE CONTROL SOLENOID VALVE A (LINE PRESSURE SOLENOID VALVE)
Check resistance between CVT unit connector terminal and ground.
Is the inspection result normal?
YES >> INSPECTION END
NO >> Replace transaxle assembly. Refer to TM-168, "
Exploded View".
Component Inspection [Pressure Control Solenoid Valve B (Secondary Pressure So-
lenoid Valve)]
INFOID:0000000003849009
1.CHECK PRESSURE CONTROL SOLENOID VALVE B (SECONDARY PRESSURE SOLENOID VALVE)
Check resistance between CVT unit connector terminal and ground.
CVT unit connector
GroundResistance (Approx.)
Connector Terminal
F24 2 3.0 – 9.0 Ω
CVT unit connector
GroundResistance (Approx.)
Connector Terminal
F24 3 3.0 – 9.0 Ω

P0841 PRESSURE SENSOR FUNCTION
TM-79
< COMPONENT DIAGNOSIS >[CVT: RE0F09B]
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Is the inspection result normal?
YES >> INSPECTION END
NO >> Replace transaxle assembly. Refer to TM-168, "
Exploded View".

TM-80
< COMPONENT DIAGNOSIS >[CVT: RE0F09B]
P0845 TRANSMISSION FLUID PRESSURE SENSOR B (PRI PRESSURE SEN-
SOR)
P0845 TRANSMISSION FLUID PRESSURE SENSOR B (PRI PRESSURE
SENSOR)
DescriptionINFOID:0000000003849010
The transmission fluid pressure sensor B (primary pressure sensor) detects primary pressure of CVT and
sends the signal to the TCM.
DTC LogicINFOID:0000000003849011
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. Select “Data Monitor” mode for “TRANSMISSION”.
3. Make sure that output voltage of line temperature sensor is within the range below.
4. Start engine and wait for at least 5 consecutive seconds.
With GST
Follow the procedure “With CONSULT-III”.
Is
“P0845 TR PRS SENS/B CIRC” detected?
YES >> Go to TM-80, "Diagnosis Procedure".
NO >> Check intermittent incident. Refer to GI-35, "
Intermittent Incident".
Diagnosis ProcedureINFOID:0000000003849012
1.CHECK INPUT SIGNAL
1. Start engine.
2. Check voltage between TCM connector terminal and ground.
Is the inspection result normal?
YES >> GO TO 8.
NO >> GO TO 2.
2.CHECK SENSOR POWER AND SENSOR GROUND
Check voltage between TCM connector terminals.
DTCItem
(CONSULT-III screen term)Malfunction is detected when... Possible cause
P0845 TR PRS SENS/B CIRCSignal voltage of the transmission fluid pres-
sure sensor B (primary pressure sensor) is
too high or too low while driving. Harness or connectors
(Sensor circuit is open or shorted.)
 Transmission fluid pressure sensor B (pri-
mary pressure sensor)
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)
TCM connector
GroundCondition Voltage (Approx.)
Connector Terminal
F23 14 “N” position idle 0.5 - 0.8 V

P0845 TRANSMISSION FLUID PRESSURE SENSOR B (PRI PRESSURE SEN-
SOR)
TM-81
< COMPONENT DIAGNOSIS >[CVT: RE0F09B]
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Is the inspection result normal?
YES >> GO TO 3.
NO >> GO TO 5.
3.CHECK HARNESS BETWEEN TCM AND CVT UNIT [TRANSMISSION FLUID PRESSURE SENSOR B
(PRIMARY PRESSURE SENSOR)] (PART 1)
1. Turn ignition switch OFF.
2. Disconnect TCM connector and CVT unit connector.
3. 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 4.
NO >> Repair or replace damaged parts.
4.CHECK HARNESS BETWEEN TCM AND CVT UNIT [TRANSMISSION FLUID PRESSURE SENSOR B
(PRIMARY PRESSURE SENSOR)] (PART 2)
Check continuity between TCM vehicle side harness connector terminal and ground.
Is the inspection result normal?
YES >> GO TO 7.
NO >> Repair or replace damaged parts.
5.CHECK HARNESS BETWEEN TCM AND CVT UNIT (SENSOR POWER AND SENSOR GROUND) (PART
1)
1. Turn ignition switch OFF.
2. Disconnect TCM connector and CVT unit connector.
3. Check continuity between TCM vehicle side harness connector terminal and CVT unit vehicle side har-
ness connector terminals.
Is the inspection result normal?
YES >> GO TO 6.
NO >> Repair or replace damaged parts.
6.CHECK HARNESS BETWEEN TCM AND CVT UNIT (SENSOR POWER AND SENSOR GROUND) (PART
2)
Check continuity between TCM vehicle side harness connector terminals and ground.
TCM connector
Voltage (Approx.)
ConnectorTe r m i n a l
(+) (-)
F23 25 26 4.75 - 5.25 V
TCM vehicle side harness connector CVT unit vehicle side harness connector
Continuity
Connector Terminal Connector Terminal
F2314F2425Existed
TCM vehicle side harness connector
GroundContinuity
Connector Terminal
F23 14 Not existed
TCM vehicle side harness connector CVT unit vehicle side harness connector
Continuity
Connector Terminal Connector Terminal
F2325
F2419
Existed
26 20

TM-82
< COMPONENT DIAGNOSIS >[CVT: RE0F09B]
P0845 TRANSMISSION FLUID PRESSURE SENSOR B (PRI 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-153, "
Exploded View".
2. Connect each connector.
3. Perform “DTC CONFIRMATION PROCEDURE”. Refer to TM-80, "
DTC Logic".
Is
“P0845 TR PRS SENS/B CIRC” detected?
YES >> Replace transaxle assembly. Refer to TM-168, "Exploded View".
NO >> Replace TCM. Refer to TM-153, "
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-153, "Exploded View".
NO >> Repair or replace damaged parts.
TCM vehicle side harness connector
GroundContinuity
Connector Terminal
F2325
Not existed
26

P0868 SECONDARY PRESSURE DOWN
TM-83
< COMPONENT DIAGNOSIS >[CVT: RE0F09B]
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P0868 SECONDARY PRESSURE DOWN
DescriptionINFOID:0000000003849013
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:0000000003849014
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. Make sure that output voltage of CVT fluid temperature sensor is within the range 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-83, "Diagnosis Procedure".
NO >> Check intermittent incident. Refer to GI-35, "
Intermittent Incident".
Diagnosis ProcedureINFOID:0000000003849015
1.CHECK LINE PRESSURE
Perform line pressure test. Refer to TM-146, "
Inspection and Judgment".
Is the inspection result normal?
YES >> GO TO 2.
NO >> Repair or replace damaged parts. Refer to TM-146, "
Inspection and Judgment".
2.CHECK PRESSURE CONTROL SOLENOID VALVE B (SECONDARY PRESSURE SOLENOID VALVE)
1. Turn ignition switch OFF.
2. Disconnect CVT unit connector.
DTCItem
(CONSULT-III screen term)Malfunction is detected when... Possible cause
P0868 SEC/PRESS DOWNSecondary fluid pressure is too low com-
pared with the commanded value while driv-
ing. Harness or connectors
(Solenoid circuit is open or shorted.)
 Pressure control solenoid valve B (sec-
ondary pressure solenoid valve) system
 Transmission fluid pressure sensor A
(secondary pressure 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 slow-
ly): 0 → 50 km/h (31 MPH)
ACC PEDAL OPEN : 0.5/8 – 1.0/8
RANGE : “D” position

TM-84
< COMPONENT DIAGNOSIS >[CVT: RE0F09B]
P0868 SECONDARY PRESSURE DOWN
3. Check pressure control solenoid valve B (secondary pressure solenoid valve). Refer to TM-84, "Compo-
nent 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-84, "
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-74, "
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 TCM. Refer to TM-153, "Exploded View".
NO >> Repair or replace damaged parts.
Component Inspection [Pressure Control Solenoid Valve A (Line Pressure Solenoid
Va l v e ) ]
INFOID:0000000003849016
1.CHECK PRESSURE CONTROL SOLENOID VALVE A (LINE PRESSURE SOLENOID VALVE)
Check resistance between CVT unit connector terminal and ground.
Is the inspection result normal?
YES >> INSPECTION END
NO >> Replace transaxle assembly. Refer to TM-168, "
Exploded View".
Component Inspection [Pressure Control Solenoid Valve B (Secondary Pressure So-
lenoid Valve)]
INFOID:0000000003849017
1.CHECK PRESSURE CONTROL SOLENOID VALVE B (SECONDARY PRESSURE SOLENOID VALVE)
Check resistance between CVT unit connector terminal and ground.
Is the inspection result normal?
YES >> INSPECTION END
NO >> Replace transaxle assembly. Refer to TM-168, "
Exploded View".
CVT unit connector
GroundResistance (Approx.)
Connector Terminal
F24 2 3.0 – 9.0 Ω
CVT unit connector
GroundResistance (Approx.)
Connector Terminal
F24 3 3.0 – 9.0 Ω

P1701 TRANSMISSION CONTROL MODULE (POWER SUPPLY)
TM-85
< COMPONENT DIAGNOSIS >[CVT: RE0F09B]
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P1701 TRANSMISSION CONTROL MODULE (POWER SUPPLY)
DescriptionINFOID:0000000003849018
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” is indicated when replacing TCM, perform diagnosis after erasing
“Self-Diagnostic Results”.
DTC LogicINFOID:0000000003849019
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. Wait for at least 2 consecutive seconds.
3. Perform “Self-Diagnostic Results” mode for “TRANSMISSION”.
Is
“P1701 TCM-POWER SUPPLY” detected?
YES >> Go to TM-85, "Diagnosis Procedure".
NO >> Check intermittent incident. Refer to GI-35, "
Intermittent Incident".
Diagnosis ProcedureINFOID:0000000003849020
1.CHECK TCM POWER SOURCE
1. Turn ignition switch OFF.
2. Disconnect TCM connector.
3. Check voltage between TCM vehicle side harness connector terminals.
Is the inspection result normal?
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-diagnosis memory
function stops.
 This is not a malfunction message (When-
ever 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 shorted.)
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

TM-86
< COMPONENT DIAGNOSIS >[CVT: RE0F09B]
P1701 TRANSMISSION CONTROL MODULE (POWER SUPPLY)
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 6.
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.
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.
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
TCM vehicle side harness connector Fuse block J/B vehicle side harness connector
Continuity
Connector Terminal Connector Terminal
F2345
E103 12F Existed
47

P1701 TRANSMISSION CONTROL MODULE (POWER SUPPLY)
TM-87
< COMPONENT DIAGNOSIS >[CVT: RE0F09B]
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5.CHECK HARNESS BETWEEN TCM AND IPDM E/R AND BETWEEN TCM AND BATTERY (PART 2)
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.
 10A fuse (No. 43, located in IPDM E/R)
 10A fuse (No. 11, located in fuse block J/B)
 Ignition switch. Refer to PG-55, "
Wiring Diagram - IGNITION POWER SUPPLY -".
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-153, "Exploded View".
NO >> Repair or replace damaged parts.
TCM vehicle side harness connector
GroundContinuity
Connector Terminal
F2345
Not existed 46
47
48