check transmission fluid NISSAN TEANA 2008 User Guide

TM-4
ROAD TEST .....................................................148
Description .............................................................148
Check before Engine Is Started .............................148
Check at Idle ..........................................................149
Cruise Test ............................................................150
CVT POSITION ................................................152
Inspection and Adjustment ....................................152
ON-VEHICLE REPAIR ...............................153
TRANSMISSION CONTROL MODULE ..........153
Exploded View .......................................................153
Removal and Installation .......................................153
Adjustment .............................................................154
CONTROL DEVICE .........................................155
Exploded View .......................................................155
Removal and Installation .......................................155
Inspection and Adjustment ....................................156
CONTROL CABLE ..........................................157
Exploded View .......................................................157
Removal and Installation .......................................157
Inspection and Adjustment ....................................158
OIL PAN ...........................................................159
Exploded View .......................................................159
Removal and Installation .......................................159
Inspection ..............................................................160
SECONDARY SPEED SENSOR .....................161
Exploded View .......................................................161
Removal and Installation .......................................161
Inspection ..............................................................161
DIFFERENTIAL SIDE OIL SEAL ....................162
Exploded View .......................................................162
Removal and Installation .......................................162
Inspection ..............................................................163
AIR BREATHER HOSE ...................................164
Exploded View .......................................................164
Removal and Installation .......................................164
FLUID COOLER SYSTEM ...............................165
Exploded View .......................................................165
Removal and Installation .......................................165
Inspection ..............................................................167
REMOVAL AND INSTALLATION ..............168
TRANSAXLE ASSEMBLY ..............................168
Exploded View .......................................................168
Removal and Installation .......................................168
Inspection ..............................................................170
DISASSEMBLY AND ASSEMBLY ............172
TORQUE CONVERTER ..................................172
Exploded View .......................................................172
Disassembly ..........................................................172
Assembly ..............................................................172
Inspection ..............................................................173
SERVICE DATA AND SPECIFICATIONS
(SDS) .........................................................
174
SERVICE DATA AND SPECIFICATIONS
(SDS) ................................................................
174
General Specification ............................................174
Vehicle Speed When Shifting Gears .....................174
Stall Speed ............................................................174
Line Pressure ........................................................174
Solenoid Valves ....................................................175
CVT Fluid Temperature Sensor ............................175
Primary Speed Sensor ..........................................175
Secondary Speed Sensor .....................................175
Step Motor ............................................................175
Torque Converter ..................................................175
CVT: RE0F10A
BASIC INSPECTION .................................
176
DIAGNOSIS AND REPAIR WORK FLOW .......176
Work Flow .............................................................176
Diagnostic Work Sheet .........................................177
INSPECTION AND ADJUSTMENT ..................179
ADDITIONAL SERVICE WHEN REPLACING
CONTROL UNIT ......................................................
179
ADDITIONAL SERVICE WHEN REPLACING
CONTROL UNIT : Service After Replacing TCM
and Transaxle Assembly .......................................
179
FUNCTION DIAGNOSIS ...........................181
CVT SYSTEM ...................................................181
System Diagram ...................................................181
Component Parts Location ...................................182
MECHANICAL SYSTEM ..................................183
Cross-Sectional View ............................................183
System Diagram ...................................................184
System Description ...............................................184
Component Parts Location ...................................185
Component Description ........................................186
HYDRAULIC CONTROL SYSTEM ..................187
System Diagram ...................................................187
System Description ...............................................187
Component Parts Location ...................................188
Component Description ........................................189
CONTROL SYSTEM .........................................190
System Diagram ...................................................190
System Description ...............................................190
Component Parts Location ...................................192
Component Description ........................................193
LOCK-UP AND SELECT CONTROL SYSTEM
..
194

TM-6
P0778 PRESSURE CONTROL SOLENOID B
ELECTRICAL (SEC PRESSURE SOLENOID
VALVE) ............................................................
240
Description .............................................................240
DTC Logic ..............................................................240
Diagnosis Procedure .............................................240
Component Inspection [Pressure Control Sole-
noid Valve B (Secondary Pressure Solenoid
Valve)] ...................................................................
241
P0840 TRANSMISSION FLUID PRESSURE
SENSOR A (SEC PRESSURE SENSOR) .......
242
Description .............................................................242
DTC Logic ..............................................................242
Diagnosis Procedure .............................................242
P0841 PRESSURE SENSOR FUNCTION ......245
Description .............................................................245
DTC Logic ..............................................................245
Diagnosis Procedure .............................................245
Component Inspection [Pressure Control Sole-
noid Valve A (Line Pressure Solenoid Valve)] .......
246
Component Inspection [Pressure Control Sole-
noid Valve B (Secondary Pressure Solenoid
Valve)] ...................................................................
246
P0868 SECONDARY PRESSURE DOWN ......247
Description .............................................................247
DTC Logic ..............................................................247
Diagnosis Procedure .............................................247
Component Inspection [Pressure Control Sole-
noid Valve A (Line Pressure Solenoid Valve)] .......
248
Component Inspection [Pressure Control Sole-
noid Valve B (Secondary Pressure Solenoid
Valve)] ...................................................................
248
P1701 TRANSMISSION CONTROL MODULE
(POWER SUPPLY) ..........................................
249
Description .............................................................249
DTC Logic ..............................................................249
Diagnosis Procedure .............................................249
P1705 THROTTLE POSITION SENSOR ........252
Description .............................................................252
DTC Logic ..............................................................252
Diagnosis Procedure .............................................252
P1722 ESTM VEHICLE SPEED SIGNAL ........253
Description .............................................................253
DTC Logic ..............................................................253
Diagnosis Procedure .............................................253
P1723 CVT SPEED SENSOR FUNCTION ......255
Description .............................................................255
DTC Logic ..............................................................255
Diagnosis Procedure .............................................255
P1726 ELECTRIC THROTTLE CONTROL
SYSTEM ...........................................................
257
Description .............................................................257
DTC Logic .............................................................257
Diagnosis Procedure .............................................257
P1740 LOCK-UP SELECT SOLENOID
VALVE ..............................................................
258
Description ............................................................258
DTC Logic .............................................................258
Diagnosis Procedure .............................................258
Component Inspection (Lock-up Select Solenoid
Valve) ....................................................................
259
P1745 LINE PRESSURE CONTROL ...............260
Description ............................................................260
DTC Logic .............................................................260
Diagnosis Procedure .............................................260
P1777 STEP MOTOR .......................................261
Description ............................................................261
DTC Logic .............................................................261
Diagnosis Procedure .............................................261
Component Inspection (Step Motor) .....................263
P1778 STEP MOTOR - FUNCTION .................264
Description ............................................................264
DTC Logic .............................................................264
Diagnosis Procedure .............................................264
SHIFT POSITION INDICATOR CIRCUIT .........266
Description ............................................................266
Component Function Check .................................266
Diagnosis Procedure .............................................266
SHIFT LOCK SYSTEM .....................................267
Description ............................................................267
Wiring Diagram - CVT SHIFT LOCK SYSTEM - ...267
Component Function Check .................................269
Diagnosis Procedure .............................................270
Component Inspection (Stop Lamp Switch) ..........271
SPORT MODE SWITCH ...................................272
Description ............................................................272
Component Function Check .................................272
Diagnosis Procedure .............................................272
ECU DIAGNOSIS ......................................275
TCM ..................................................................275
Reference Value ...................................................275
Wiring Diagram - CVT CONTROL SYSTEM - ......279
Fail-safe ................................................................283
DTC Inspection Priority Chart ...............................284
DTC Index .............................................................284
SYMPTOM DIAGNOSIS ...........................286
SYSTEM SYMPTOM ........................................286
Symptom Table .....................................................286
PRECAUTION ...........................................297
PRECAUTIONS ................................................297

TM-7
C
E
F
G
H
I
J
K
L
MA
B
TM
N
O
P Precaution for Supplemental Restraint System
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN-
SIONER" ...............................................................
297
Precaution Necessary for Steering Wheel Rota-
tion after Battery Disconnect .................................
297
Precaution for Procedure without Cowl Top Cover ..298
Precaution for On Board Diagnosis (OBD) System
of CVT and Engine ................................................
298
Precaution for TCM and CVT Assembly Replace-
ment ......................................................................
298
Removal and Installation Procedure for CVT Unit
Connector ..............................................................
298
Precaution .............................................................299
Service Notice or Precaution .................................300
ATFTEMP COUNT Conversion Table ..................301
PREPARATION .........................................302
PREPARATION ................................................302
Special Service Tools ............................................302
Commercial Service Tools ....................................302
ON-VEHICLE MAINTENANCE ..................304
CVT FLUID .......................................................304
Inspection ..............................................................304
Changing ...............................................................305
STALL TEST ....................................................306
Inspection and Judgment ......................................306
LINE PRESSURE TEST ...................................308
Inspection and Judgment ......................................308
ROAD TEST .....................................................310
Description ............................................................310
Check before Engine Is Started ............................310
Check at Idle .........................................................311
Cruise Test ............................................................312
CVT POSITION .................................................314
Inspection and Adjustment ....................................314
ON-VEHICLE REPAIR ...............................315
TRANSMISSION CONTROL MODULE ...........315
Exploded View ......................................................315
Removal and Installation .......................................315
CONTROL DEVICE ..........................................317
Exploded View ......................................................317
Removal and Installation .......................................317
Inspection and Adjustment ....................................318
CONTROL CABLE ...........................................319
Exploded View ......................................................319
Removal and Installation .......................................319
Inspection and Adjustment ....................................320
OIL PAN ...........................................................321
Exploded View ......................................................321
Removal and Installation .......................................321
Inspection ..............................................................322
PRIMARY SPEED SENSOR ...........................323
Exploded View .......................................................323
Removal and Installation .......................................323
Inspection ..............................................................323
SECONDARY SPEED SENSOR ....................324
Exploded View .......................................................324
Removal and Installation .......................................324
Inspection ..............................................................324
DIFFERENTIAL SIDE OIL SEAL ....................325
Exploded View .......................................................325
Removal and Installation .......................................325
Inspection ..............................................................326
OIL PUMP FITTING BOLT ..............................327
Description .............................................................327
Exploded View .......................................................327
Removal and Installation .......................................327
Inspection ..............................................................327
AIR BREATHER HOSE ..................................328
Exploded View .......................................................328
Removal and Installation .......................................328
FLUID COOLER SYSTEM ..............................329
Exploded View .......................................................329
Removal and Installation .......................................329
Inspection ..............................................................331
REMOVAL AND INSTALLATION .............332
TRANSAXLE ASSEMBLY ..............................332
Exploded View .......................................................332
Removal and Installation .......................................332
Inspection ..............................................................334
DISASSEMBLY AND ASSEMBLY ............335
TORQUE CONVERTER AND CONVERTER
HOUSING OIL SEAL ......................................
335
Exploded View .......................................................335
Disassembly ..........................................................335
Assembly ...............................................................335
Inspection ..............................................................336
SERVICE DATA AND SPECIFICATIONS
(SDS) ..........................................................
337
SERVICE DATA AND SPECIFICATIONS
(SDS) ...............................................................
337
General Specification ............................................337
Vehicle Speed When Shifting Gears .....................337
Stall Speed ............................................................337
Line Pressure ........................................................337
Solenoid Valves .....................................................338
CVT Fluid Temperature Sensor .............................338
Primary Speed Sensor ..........................................338
Secondary Speed Sensor ......................................338

DIAGNOSIS SYSTEM (TCM)
TM-37
< FUNCTION DIAGNOSIS >[CVT: RE0F09B]
C
E
F
G
H
I
J
K
L
MA
B
TM
N
O
P
DIAGNOSIS SYSTEM (TCM)
CONSULT-III Function (TRANSMISSION)INFOID:0000000003848944
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 a mode other than “0” and “OFF”. Selecting “+1” or “−1” or “–2” 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-121, "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 Diagnostic Support Monitor It monitors the status of CAN communication.
Function TestThis mode can show results of self-diagnosis of ECU with either “OK” or “NG”. For en-
gine, more practical tests regarding sensors/switches and/or actuators are available.
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.

TM-50
< COMPONENT DIAGNOSIS >[CVT: RE0F09B]
P0710 CVT FLUID TEMPERATURE SENSOR
P0710 CVT FLUID TEMPERATURE SENSOR
DescriptionINFOID:0000000003848960
The CVT fluid temperature sensor detects the CVT fluid temperature and sends the signal to the TCM.
DTC LogicINFOID:0000000003848961
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 and maintain the following conditions for at least 10 minutes (total).
With GST
Follow the procedure “With CONSULT-III”.
Is
“P0710 ATF TEMP SEN/CIRC” detected?
YES >> Go to TM-50, "Diagnosis Procedure".
NO >> Check intermittent incident. Refer to GI-35, "
Intermittent Incident".
Diagnosis ProcedureINFOID:0000000003848962
1.CHECK CVT FLUID TEMPERATURE SENSOR CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect TCM connector.
3. Check resistance between TCM vehicle side harness connector terminals.
Is the inspection result normal?
YES >> GO TO 5.
NO >> GO TO 2.
2.CHECK HARNESS BETWEEN TCM AND CVT UNIT (CVT TEMPERATURE SENSOR) (PART 1)
1. Disconnect CVT unit connector.
DTCItem
(CONSULT-III screen term)Malfunction is detected when... Possible cause
P0710 ATF TEMP SEN/CIRCDuring running, the CVT fluid temperature
sensor signal voltage is excessively high or
low. Harness or connectors
(Sensor circuit is open or shorted.)
 CVT fluid temperature sensor
VEHICLE SPEED : 10 km/h (6 MPH) or more
ENG SPEED : 450 rpm or more
ACC PEDAL OPEN : More than 1.0/8
RANGE : “D” position
TCM vehicle side harness connector
condition Resistance (Approx.)
Connector Terminal
F23 13 25When CVT fluid temperature is 20°C (68°F) 6.5 kΩ
When CVT fluid temperature is 80° (176°F) 0.9 kΩ

TM-60
< COMPONENT DIAGNOSIS >[CVT: RE0F09B]
P0730 BELT DAMAGE
P0730 BELT DAMAGE
DescriptionINFOID:0000000003848973
TCM selects the gear ratio using the engine load (throttle position), the primary pulley revolution speed, and
the secondary pulley revolution speed as input signals. Then it changes the operating pressure of the primary
pulley and the secondary pulley and changes the groove width of the pulley.
DTC LogicINFOID:0000000003848974
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 30 consecutive seconds.
Is
“P0730 BELT DAMG” detected?
YES >> Go to TM-60, "Diagnosis Procedure".
NO >> Check intermittent incident. Refer to GI-35, "
Intermittent Incident".
Diagnosis ProcedureINFOID:0000000003848975
1.CHECK DTC
With CONSULT-III
1. Turn ignition switch ON.
2. Perform “Self-Diagnostic Results” mode for “TRANSMISSION”.
Are any DTC detected?
YES-1 (DTC for “P0730 BELT DAMG” is detected)>>Replace transaxle assembly. Refer to TM-168,
"Exploded View".
YES-2 (DTC except for “P0730 BELT DAMG” is detected)>>Check DTC detected item. Refer to TM-37,
"CONSULT-III Function (TRANSMISSION)".
NO >> GO TO 2.
2.DETECT MALFUNCTIONING ITEMS
DTCItem
(CONSULT-III screen term)Malfunction is detected when... Possible cause
P0730 BELT DAMG Unexpected gear ratio detected. Transaxle assembly
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)
Start test from 0 km/h (0 MPH)
Constant acceleration : Keep 30 sec or more
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

TM-62
< COMPONENT DIAGNOSIS >[CVT: RE0F09B]
P0740 TORQUE CONVERTER CLUTCH SOLENOID VALVE
P0740 TORQUE CONVERTER CLUTCH SOLENOID VALVE
DescriptionINFOID:0000000003848976
 The torque converter clutch solenoid valve is activated by the TCM in response to signals sent from the vehi-
cle speed and accelerator pedal position sensors. Lock-up piston operation will then be controlled.
 Lock-up operation, however, is prohibited when CVT fluid temperature is too low.
 When the accelerator pedal is depressed (less than 2.0/8) in lock-up condition, the engine speed shall not
change abruptly. If there is a big jump in engine speed, there is no lock-up.
DTC LogicINFOID:0000000003848977
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 at least 10 consecutive seconds.
3. Perform “Self-Diagnostic Results” mode for “TRANSMISSION”.
With GST
Follow the procedure “With CONSULT-III”.
Is
“P0740 TCC SOLENOID/CIRC” detected?
YES >> Go to TM-62, "Diagnosis Procedure".
NO >> Check intermittent incident. Refer to GI-35, "
Intermittent Incident".
Diagnosis ProcedureINFOID:0000000003848978
1.CHECK TORQUE CONVERTER CLUTCH SOLENOID VALVE CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect TCM connector.
3. Check resistance between TCM vehicle side harness connector terminal and ground.
Is the inspection result normal?
YES >> GO TO 5.
NO >> GO TO 2.
2.CHECK HARNESS BETWEEN TCM AND CVT UNIT (TORQUE CONVERTER CLUTCH SOLENOID
VA LV E ) ( PA R T 1 )
1. Disconnect CVT unit connector.
2. Check continuity between TCM vehicle side harness connector terminal and CVT unit vehicle side har-
ness connector terminal.
DTCItem
(CONSULT-III screen term)Malfunction is detected when... Possible cause
P0740 TCC SOLENOID/CIRCNormal voltage is not applied to solenoid
due to open or short circuit. Torque converter clutch solenoid valve
 Harness or connectors
(Solenoid circuit is open or shorted.)
TCM vehicle side harness connector
GroundResistance (Approx.)
Connector Terminal
F23 38 3.0 – 9.0 Ω

TM-70
< COMPONENT DIAGNOSIS >[CVT: RE0F09B]
P0776 PRESSURE CONTROL SOLENOID B PERFORMANCE (SEC PRESSURE
SOLENOID VALVE)
P0776 PRESSURE CONTROL SOLENOID B PERFORMANCE (SEC PRES-
SURE SOLENOID VALVE)
DescriptionINFOID:0000000003848993
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:0000000003848994
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 and maintain the following conditions for at least 30 consecutive seconds.
With GST
Follow the procedure “With CONSULT-III”.
Is
“P0776 PRS CNT SOL/B FCTN” detected?
YES >> Go to TM-70, "Diagnosis Procedure".
NO >> Check intermittent incident. Refer to GI-35, "
Intermittent Incident".
Diagnosis ProcedureINFOID:0000000003848995
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
P0776 PRS CNT SOL/B FCTNSecondary pressure is too high or too low
compared with the commanded value while
driving. 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
ACC PEDAL OPEN : More than 1.0/8
RANGE : “D” position
VEHICLE SPEED : 10 km/h (6 MPH) or more
Driving location : Driving the vehicle uphill (increased engine load) will help maintain the driving
conditions required for this test.

P0776 PRESSURE CONTROL SOLENOID B PERFORMANCE (SEC PRESSURE
SOLENOID VALVE)
TM-71
< COMPONENT DIAGNOSIS >[CVT: RE0F09B]
C
E
F
G
H
I
J
K
L
MA
B
TM
N
O
P
3. Check pressure control solenoid valve B (secondary pressure solenoid valve). Refer to TM-71, "Compo-
nent Inspection [Pressure Control Solenoid Valve B (Secondary Pressure Solenoid Valve)]".
Is the inspection result normal?
YES >> GO TO 3.
NO >> Replace transaxle assembly. Refer to TM-168, "
Exploded View".
3.CHECK PRESSURE CONTROL SOLENOID VALVE A (LINE PRESSURE SOLENOID VALVE)
Check pressure control solenoid valve A (line pressure solenoid valve). Refer to TM-71, "
Component Inspec-
tion [Pressure Control Solenoid Valve A (Line Pressure Solenoid Valve)]".
Is the inspection result normal?
YES >> GO TO 4.
NO >> Replace transaxle assembly. Refer to TM-168, "
Exploded View".
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-168, "Exploded View".
NO >> Repair or replace damaged parts.
Component Inspection [Pressure Control Solenoid Valve A (Line Pressure Solenoid
Va l v e ) ]
INFOID:0000000003848996
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:0000000003848997
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

TM-74
< COMPONENT DIAGNOSIS >[CVT: RE0F09B]
P0840 TRANSMISSION FLUID PRESSURE SENSOR A (SEC PRESSURE SEN-
SOR)
P0840 TRANSMISSION FLUID PRESSURE SENSOR A (SEC PRESSURE
SENSOR)
DescriptionINFOID:0000000003849002
The transmission fluid pressure sensor A (secondary pressure sensor) detects secondary pressure of CVT
and sends the signal to the TCM.
DTC LogicINFOID:0000000003849003
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 CVT fluid 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
“P0840 TR PRS SENS/A CIRC” detected?
YES >> Go to TM-74, "Diagnosis Procedure".
NO >> Check intermittent incident. Refer to GI-35, "
Intermittent Incident".
Diagnosis ProcedureINFOID:0000000003849004
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 POWER AND SENSOR GROUND
Check voltage between TCM connector terminals.
DTCItem
(CONSULT-III screen term)Malfunction is detected when... Possible cause
P0840 TR PRS SENS/A CIRCSignal voltage of the transmission fluid pres-
sure sensor A (secondary pressure sensor)
is too high or too low while driving. Harness or connectors
(Sensor circuit is open or shorted.)
 Transmission fluid pressure sensor A
(secondary 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 15 “N” position idle 1.0 - 1.5 V