lock NISSAN TEANA 2008 Service Manual

TCM
TM-115
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*: A circuit tester cannot be used to test this item.38
(L/W)GroundTorque converter clutch so-
lenoid valveOutputWhen vehicle drive
in “D” positionWhen CVT performs lock-up 6.0 V
When CVT does not perform
lock-up1.0 V
39
(W/B)GroundPressure control solenoid
valve B (Secondary pres-
sure solenoid valve)Output
“N” positions idle Release your foot from the ac-
celerator pedal.5.0 – 7.0
V
Press the accelerator pedal all
the way down.3.0 – 4.0
V
40
(R/Y)GroundPressure control solenoid
valve A (Line pressure so-
lenoid valve)Output Release your foot from the ac-
celerator pedal.5.0 – 7.0
V
Press the accelerator pedal all
the way down.1.0 – 3.0
V
42
(B)Ground Ground Output Always 0 V
45
(L/R)GroundPower supply
(memory back-up)Input AlwaysBattery
voltage
46
(Y)Ground Power supply OutputIgnition switch ON —Battery
voltage
Ignition switch OFF — 0 V
47
(L/R)GroundPower supply
(memory back-up)Input AlwaysBattery
voltage
48
(Y)Ground Power supply OutputIgnition switch ON —Battery
voltage
Ignition switch OFF — 0 V Te r m i n a l N o .
(Wire color)Description
ConditionVa l u e
(Approx.)
+ - Signal name Input/Output

TCM
TM-121
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P Output Speed Sensor (Secondary Speed Sensor)
The shift pattern is changed in accordance with the throttle position when an unexpected signal is sent from
the output speed sensor (secondary speed sensor) to the TCM. The sport mode is inhibited, and the transaxle
is put in “D”.
Input Speed Sensor (Primary Speed Sensor)
The shift pattern is changed in accordance with the 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 sport
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 5,000
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 inputted to the TCM, sec-
ondary 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 valve to the TCM, the pressure control solenoid A (line pres-
sure 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 valve to the TCM, the pressure control solenoid B (secondary
pressure 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 valve to the TCM, the torque converter clutch solenoid valve
is turned OFF to cancel the lock-up.
Ste p M oto r
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 valve 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 the TCM. Normal status is restored when turning the ignition
switch OFF to ON after the normal power supply.
DTC Inspection Priority ChartINFOID:0000000003849062
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 indicated with other DTCs, start from a diagnosis for “DTC
U1000 CAN COMMUNICATION LINE”. Refer to TM-41
.
DTC IndexINFOID:0000000003849063
NOTE:
Priority Detected items (DTC)
1 U1000 CAN communication line
2 Except above

SYSTEM SYMPTOM
TM-123
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SYMPTOM DIAGNOSIS
SYSTEM SYMPTOM
Symptom TableINFOID:0000000003849064
The diagnostics item numbers show the sequence for inspection. Inspect in order from item 1.
No. Item Symptom Condition Diagnostic item Reference
1
Shift ShockLarge shock. (“N”→
“D” position)ON vehicle1. Engine idle speedEC-14
2. Engine speed signalTM-59
3. Accelerator pedal position sensorTM-88
4. CVT positionTM-152
5. CVT fluid temperature sensorTM-50
6. CAN communication lineTM-41
7. CVT fluid level and stateTM-142
8. Line pressure testTM-146
9. Torque converter clutch solenoid valveTM-62
10. Lock-up select solenoid valveTM-94
11. PNP switchTM-44
OFF vehicle12. Forward clutch
TM-16813. Control valve
2Large shock. (“N”→
“R” position)ON vehicle1. Engine idle speedEC-14
2. Engine speed signalEC-14
3. Accelerator pedal position sensorTM-88
4. CVT positionTM-152
5. CVT fluid temperature sensorTM-50
6. CAN communication lineTM-41
7. CVT fluid level and stateTM-142
8. Line pressure testTM-146
9. Torque converter clutch solenoid valveTM-62
10. Lock-up select solenoid valveTM-94
11. PNP switchTM-44
OFF vehicle12. Reverse brake
TM-16813. Control valve
3Shock is too large for
lock-up.ON vehicle1. CVT positionTM-152
2. Engine speed signalTM-59
3. CAN communication lineTM-41
4. CVT fluid level and stateTM-142
OFF vehicle5. Torque converterTM-1726. Control valveTM-168

SYSTEM SYMPTOM
TM-125
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P6
Slips/Will
Not EngageDoes not lock-up.ON vehicle1. CVT fluid level and stateTM-142
2. Line pressure testTM-146
3. Engine speed signalTM-59
4. Primary speed sensorTM-52
5. Torque converter clutch solenoid valveTM-62
6. CAN communication lineTM-41
7. Stall testTM-144
8. Step motorTM-97
9. PNP switchTM-44
10. Lock-up select solenoid valveTM-94
11. CVT fluid temperature sensorTM-50
12. Secondary speed sensorTM-55
13. Secondary pressure sensorTM-74
OFF vehicle14. Torque converterTM-17215. Oil pump assembly
TM-168
16. Control valve
7Does not hold lock-up
condition.ON vehicle1. CVT fluid level and stateTM-142
2. Line pressure testTM-146
3. Engine speed signalTM-59
4. Primary speed sensorTM-52
5. Torque converter clutch solenoid valveTM-62
6. CAN communication lineTM-41
7. Stall testTM-144
8. Step motorTM-97
9. PNP switchTM-44
10. Lock-up select solenoid valveTM-94
11. CVT fluid temperature sensorTM-50
12. Secondary speed sensorTM-55
13. Secondary pressure sensorTM-74
OFF vehicle14. Torque converterTM-17215. Oil pump assembly
TM-168
16. Control valve No. Item Symptom Condition Diagnostic item Reference

TM-126
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SYSTEM SYMPTOM
8
Slips/Will
Not EngageLock-up is not re-
leased.ON vehicle1. CVT fluid level and stateTM-142
2. Line pressure testTM-146
3. Engine speed signalTM-59
4. Primary speed sensorTM-52
5. Torque converter clutch solenoid valveTM-62
6. CAN communication lineTM-41
7. Stall testTM-144
OFF vehicle8. Torque converterTM-1729. Oil pump assembly
TM-168
10. Control valve
9With selector lever in
“D” position, accelera-
tion is extremely poor.ON vehicle1. CVT fluid level and stateTM-142
2. Line pressure testTM-146
3. Stall testTM-144
4. Accelerator pedal position sensorTM-88
5. CAN communication lineTM-41
6. PNP switchTM-44
7. CVT positionTM-152
8. Step motorTM-97
9. Primary speed sensorTM-52
10. Secondary speed sensorTM-55
11. Accelerator pedal position sensorTM-88
12. Primary pressure sensorTM-80
13. Secondary pressure sensorTM-74
14. CVT fluid temperature sensorTM-50
15. TCM power supply and groundTM-85
OFF vehicle16. Torque converterTM-17217. Oil pump assembly
TM-168
18. Forward clutch
19. Control valve No. Item Symptom Condition Diagnostic item Reference

SYSTEM SYMPTOM
TM-127
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Slips/Will
Not EngageWith selector lever in
“R” position, accelera-
tion is extremely poor.ON vehicle1. CVT fluid level and stateTM-142
2. Line pressure testTM-146
3. Stall testTM-144
4. Accelerator pedal position sensorTM-88
5. CAN communication lineTM-41
6. PNP switchTM-44
7. CVT positionTM-152
8. Step motorTM-97
9. Primary speed sensorTM-52
10. Secondary speed sensorTM-55
11. Accelerator pedal position sensorTM-88
12. Primary pressure sensorTM-80
13. Secondary pressure sensorTM-74
14. CVT fluid temperature sensorTM-50
15. TCM power supply and groundTM-85
OFF vehicle16. Torque converterTM-17217. Oil pump assembly
TM-168
18. Reverse brake
19. Control valve
11 Slips at lock-up.ON vehicle1. CVT fluid level and stateTM-142
2. Line pressure testTM-146
3. Engine speed signalTM-59
4. Primary speed sensorTM-52
5. Torque converter clutch solenoid valveTM-62
6. CAN communication lineTM-41
7. Stall testTM-144
8. Step motorTM-97
9. PNP switchTM-44
10. Lock-up select solenoid valveTM-94
11. CVT fluid temperature sensorTM-50
12. Secondary speed sensorTM-55
13. Secondary pressure sensorTM-74
OFF vehicle14. Torque converterTM-17215. Oil pump assembly
TM-168
16. Control valve No. Item Symptom Condition Diagnostic item Reference

TM-130
< SYMPTOM DIAGNOSIS >[CVT: RE0F09B]
SYSTEM SYMPTOM
15
OthersWith selector lever in
“R” position, driving is
not possible.ON vehicle1. CVT fluid level and stateTM-142
2. Line pressure testTM-146
3. PNP switchTM-44
4. Stall testTM-144
5. CVT positionTM-152
6. Step motorTM-97
7. Primary speed sensorTM-52
8. Secondary speed sensorTM-55
9. Accelerator pedal position sensorTM-88
10. CVT fluid temperature sensorTM-50
11. Secondary pressure sensorTM-74
12. TCM power supply and groundTM-85
OFF vehicle13. Torque converterTM-172
14. Oil pump assembly
TM-168
15. Gear system
16. Reverse brake
17. Control valve
18. Parking components
16Judder occurs during
lock-up.ON vehicle1. CVT fluid level and stateTM-142
2. Engine speed signalTM-59
3. Primary speed sensorTM-52
4. Secondary speed sensorTM-55
5. Accelerator pedal position sensorTM-88
6. CAN communication lineTM-41
7. Torque converter clutch solenoid valveTM-62
OFF vehicle8. Torque converterTM-1729. Control valveTM-168
17Strange noise in “D”
position.ON vehicle1. CVT fluid level and stateTM-142
2. Engine speed signalTM-59
3. CAN communication lineTM-41
OFF vehicle4. Torque converterTM-172
5. Oil pump assembly
TM-168
6. Gear system
7. Forward clutch
8. Control valve
9. Bearing No. Item Symptom Condition Diagnostic item Reference

TM-134
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SYSTEM SYMPTOM
30
OthersEngine starts in posi-
tions other than “N” or
“P”.ON vehicle1. Ignition switch and starterPG-55
, STR-6
2. CVT positionTM-152
3. PNP switchTM-44
31When brake pedal is
depressed with igni-
tion switch ON, selec-
tor lever cannot be
shifted from “P” posi-
tion to other position.ON vehicle1. Stop lamp switch
TM-103
2. Shift lock solenoid
3. Control device
32When brake pedal is
not depressed with ig-
nition switch ON, se-
lector lever can be
shifted from “P” posi-
tion to other position.ON vehicle1. Stop lamp switch
TM-103
2. Shift lock solenoid
3. Control device
33Cannot be changed to
sport mode.ON vehicle1. Sport mode switchTM-108
2. CAN communication lineTM-41
3. Combination meterMWI-42
34SPORT indicator
lamp is not turned ON.ON vehicle1. CAN communication lineTM-412. Combination meterMWI-42
3. TCM power supply and groundTM-85
No. Item Symptom Condition Diagnostic item Reference

PRECAUTIONS
TM-135
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PRECAUTION
PRECAUTIONS
Precaution for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT
PRE-TENSIONER"
INFOID:0000000003897161
The Supplemental Restraint System such as “AIR BAG” and “SEAT BELT PRE-TENSIONER”, used along
with a front seat belt, helps to reduce the risk or severity of injury to the driver and front passenger for certain
types of collision. Information necessary to service the system safely is included in the “SRS AIRBAG” and
“SEAT BELT” of this Service Manual.
WARNING:
 To avoid rendering the SRS inoperative, which could increase the risk of personal injury or death in
the event of a collision which would result in air bag inflation, all maintenance must be performed by
an authorized NISSAN/INFINITI dealer.
 Improper maintenance, including incorrect removal and installation of the SRS, can lead to personal
injury caused by unintentional activation of the system. For removal of Spiral Cable and Air Bag
Module, see the “SRS AIRBAG”.
 Never use electrical test equipment on any circuit related to the SRS unless instructed to in this Ser-
vice Manual. SRS wiring harnesses can be identified by yellow and/or orange harnesses or harness
connectors.
Precaution Necessary for Steering Wheel Rotation after Battery Disconnect
INFOID:0000000003897162
NOTE:
 Before removing and installing any control units, first turn the push-button ignition switch to the LOCK posi-
tion, then disconnect both battery cables.
 After finishing work, confirm that all control unit connectors are connected properly, then re-connect both
battery cables.
 Always use CONSULT-III to perform self-diagnosis as a part of each function inspection after finishing work.
If a DTC is detected, perform trouble diagnosis according to self-diagnosis results.
This vehicle is equipped with a push-button ignition switch and a steering lock unit.
If the battery is disconnected or discharged, the steering wheel will lock and cannot be turned.
If turning the steering wheel is required with the battery disconnected or discharged, follow the procedure
below before starting the repair operation.
OPERATION PROCEDURE
1. Connect both battery cables.
NOTE:
Supply power using jumper cables if battery is discharged.
2. Turn the push-button ignition switch to ACC position.
(At this time, the steering lock will be released.)
3. Disconnect both battery cables. The steering lock will remain released with both battery cables discon-
nected and the steering wheel can be turned.
4. Perform the necessary repair operation.
5. When the repair work is completed, re-connect both battery cables. With the brake pedal released, turn
the push-button ignition switch from ACC position to ON position, then to LOCK position. (The steering
wheel will lock when the push-button ignition switch is turned to LOCK position.)
6. Perform self-diagnosis check of all control units using CONSULT-III.

TM-136
< PRECAUTION >[CVT: RE0F09B]
PRECAUTIONS
Precaution for Procedure without Cowl Top Cover
INFOID:0000000003897196
When performing the procedure after removing cowl top cover, cover
the lower end of windshield with urethane, etc.
Precaution for On Board Diagnosis (OBD) System of CVT and EngineINFOID:0000000003849068
The ECM has an on board diagnostic system. It will light up the malfunction indicator (MI) to warn the driver of
a malfunction causing emission deterioration.
CAUTION:
 Be sure to turn the ignition switch OFF and disconnect the battery cable from the negative terminal
before any repair or inspection work. The open/short circuit of related switches, sensors, solenoid
valves, etc. will cause the MI to light up.
 Be sure to connect and lock the connectors securely after work. A loose (unlocked) connector will
cause the MI to light up due to an open circuit. (Be sure the connector is free from water, grease, dirt,
bent terminals, etc.)
 Be sure to route and secure the harnesses properly after work. Interference of the harness with a
bracket, etc. may cause the MI to light up due to a short circuit.
 Be sure to connect rubber tubes properly after work. A misconnected or disconnected rubber tube
may cause the MI to light up due to a malfunction of the EVAP system or fuel injection system, etc.
 Be sure to erase the unnecessary malfunction information (repairs completed) from the TCM and
ECM before returning the vehicle to the customer.
Precaution for TCM and CVT Assembly ReplacementINFOID:0000000003849069
CAUTION:
 Check if new data (Unit ID) are entered correctly after replacing CVT assembly and erasing data in
TCM. (Connect CONSULT-III, and then turn ignition switch OFF.)
 When replacing CVT assembly or TCM, refer to the pattern table below and erase the EEPROM in the
TCM if necessary.
EEPROM ERASING PATTERNS
Removal and Installation Procedure for CVT Unit ConnectorINFOID:0000000003849070
REMOVAL
PIIB3706J
CVT assembly TCM Erasing EEPROM in TCM Remarks
Replaced Replaced Not requiredNot required because the EEPROM in the TCM is in
the default state. (CVT assembly must be replaced
first.)
Not replaced Replaced Not requiredNot required because the EEPROM in the TCM is in
the default state.
Replaced Not replaced RequiredRequired because data has been written in the EE-
PROM in the TCM and because the TCM cannot write
data from the ROM assembly in the transmission.