sensor NISSAN TEANA 2003 User Guide

AT-30
A/T CONTROL SYSTEM

CONTROL OF SHIFT VALVES A AND B
Pilot pressure generated by the operation of shift solenoid valves A and B is applied to the end face of shift
valves A and B.
The figure above shows the operation of shift valve B. When the shift solenoid valve is “ON”, pilot pressure
applied to the end face of the shift valve overcomes spring force, moving the valve upward.
Lock-up ControlBCS000ZU
The torque converter clutch piston in the torque converter is locked to eliminate torque converter slip to
increase power transmission efficiency. The solenoid valve is controlled by an ON-OFF duty signal sent from
the TCM. The signal is converted to an oil pressure signal which controls the torque converter clutch piston.
CONDITIONS FOR LOCK-UP OPERATION
When vehicle is driven in 3rd and 4th gear position, vehicle speed and throttle opening are detected. If the
detected values fall within the lock-up zone memorized in the TCM, lock-up is performed.
TORQUE CONVERTER CLUTCH SOLENOID VALVE CONTROL
Lock-up Control System Diagram
SAT009J
Selector lever “D” position “3” position
Gear position D
4 , D333
Vehicle speed sensor More than set value
accelerator pedal position sensor Less than set opening
Closed throttle position signal OFF
A/T fluid temperature sensor More than 20°C (68°F)
SCIA5623E

AT-34
TROUBLE DIAGNOSIS

TROUBLE DIAGNOSISPFP:00004
DTC Inspection Priority ChartBCS000ZX
If some DTCs are displayed at the same time, perform inspections one by one based on the following priority
chart.
NOTE:
If DTC “CAN COMM CIRCUIT” is displayed with other DTCs, first perform the trouble diagnosis for
“CAN COMMUNICATION LINE”. Refer to AT- 1 3 3
.
Fail-safeBCS000ZY
The TCM has an electronic Fail-safe mode. This allows the vehicle to be driven even if a major electrical input/
output device circuit is damaged.
Under Fail-safe, the vehicle always runs in third gear, even with a shift lever position of “1”, “2”, “3” or “D”. The
customer may complain of sluggish or poor acceleration.
Always follow the AT- 3 7 , "
WORK FLOW" .
The SELF-DIAGNOSIS results will be as follows:

The first SELF-DIAGNOSIS will indicate damage to the vehicle speed sensor or the revolution sensor.

During the next SELF-DIAGNOSIS, performed after checking the sensor, no damages will be indicated.
FAIL-SAFE FUNCTION
The following fail-safe functions allow vehicles to be driven even when sensor, switch or solenoid malfunction
occurs.
Vehicle Speed Sensor 1 (Revolution Sensor)
Vehicle speed sensor 2 signal is input from combination meter.
Accelerator Pedal Position Sensor Signal
TCM controls the throttle opening angle to a predetermined fixed position to enable driving if a malfunctioning
signal is input to TCM.
Park/Neutral Position (PNP) Switch
When the multiple PNP switch signals are input to TCM, the priority of selector lever position becomes “D”·“3”,
“N”, “R”, “2” and “1” in order by internal TCM determination.
The use of 4th gear is inhibited until normal operation resumes. Because the hydraulic circuit of the control
valve is switched by manual valve according to the selector lever position, however, actual operating condition
of vehicle becomes as follows.
Priority Detected items
1 CAN communication line
2 Except above
Actual lever position PNP switch input signal Running status
“P” “P” position and other position signals P
“R” “R” position and other position signals R
“N” “N” position and other position signals N
“D”·“3” “D” position and other position signals D
1 ⇔D2 ⇔D3
“2”“2” position and other position signals (Except “1” position) 21 ⇔22 ⇔23
“2” position and “1” position signals 21 ⇔22
“1”“1” position and other position signals (Except “2” position) 11 ⇔12 ⇔13
“1” position and “2” position signals 11 ⇔12

AT-36
TROUBLE DIAGNOSIS

How to Perform Trouble Diagnoses for Quick and Accurate RepairBCS000ZZ
INTRODUCTION
The TCM receives a signal from the vehicle speed sensor, accelera-
tor pedal position sensor or PNP switch and provides shift control or
lock-up control via A/T solenoid valves.
Input and output signals must always be correct and stable in the
operation of the A/T system. The A/T system must be in good oper-
ating condition and be free of valve seizure, solenoid valve malfunc-
tion, etc.
It is much more difficult to diagnose a malfunction that occurs inter-
mittently rather than continuously. Most intermittent malfunctions are
caused by poor electric connections or improper wiring. In this case,
careful checking of suspected circuits may help prevent the replace-
ment of good parts.
A visual check only, may not find the cause of the malfunctions. A
road test with CONSULT-II or a circuit tester connected should be
performed. Follow the AT- 3 7 , "
WORK FLOW" .
Before undertaking actual checks, take a few minutes to talk with a
customer who approaches with a drivability complaint. The customer
can supply good information about such malfunctions, especially
intermittent ones. Find out what symptoms are present and under
what conditions they occur. A “DIAGNOSTIC WORKSHEET” like the
example (AT- 3 8 , "
DIAGNOSTIC WORKSHEET" ) should be used.
Start your diagnosis by looking for “conventional” malfunctions first.
This will help troubleshoot drivability malfunctions on an electroni-
cally controlled engine vehicle.
Also check related Service bulletins for information.
SAT631IA
SAT632I
SEF234G

TROUBLE DIAGNOSIS
AT-39
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Diagnostic Worksheet
1.❏ Read the Fail-safe and listen to customer complaints.AT- 3 4, AT- 3 8
2.❏ Check A/T fluidAT- 1 4❏ Leakage (Follow specified procedure)
❏ Fluid condition
❏ Fluid level
3.❏ Perform “STALL TEST” and “LINE PRESSURE TEST”.AT- 4 3
,
AT- 4 6
❏ “STALL TEST” — Mark possible damaged components/others.
❏ Torque converter one-way clutch
❏ Reverse clutch
❏ Forward clutch
❏ Overrun clutch
❏ Forward one-way clutch❏ Low & reverse brake
❏ Low one-way clutch
❏ Engine
❏ Line pressure is low
❏ Clutches and brakes except high clutch and
brake band are OK
❏ “LINE PRESSURE TEST” — Suspected parts:
4.❏ Perform “Road Test”.AT- 4 8
4-1.“Check Before Engine is Started”AT- 4 8
❏ AT-173, "A/T CHECK Indicator Lamp Does Not Come On" .
❏ Perform self-diagnostics. Enter checks for detected items. AT- 6 9
, AT- 7 6 .
❏ AT-133, "
CAN COMMUNICATION LINE" .
❏ AT-80, "
VEHICLE SPEED SENSOR·A/T (REVOLUTION SENSOR)" .
❏ AT-86, "
VEHICLE SPEED SENSOR MTR" .
❏ AT-120, "
TURBINE REVOLUTION SENSOR" .
❏ AT-90, "
SHIFT SOLENOID VALVE A" .
❏ AT-95, "
SHIFT SOLENOID VALVE B" .
❏ AT-100, "
OVERRUN CLUTCH SOLENOID VALVE" .
❏ AT-105, "
TORQUE CONVERTER CLUTCH SOLENOID VALVE" .
❏ AT-110, "
BATT/FLUID TEMP SEN (A/T FLUID TEMP SENSOR CIRCUIT AND TCM POWER
SOURCE)" .
❏ AT-116, "
ENGINE SPEED SIGNAL" .
❏ AT-136, "
A/T 1ST GEAR FUNCTION" .
❏ AT-140, "
A/T 2ND GEAR FUNCTION" .
❏ AT-143, "
A/T 3RD GEAR FUNCTION" .
❏ AT-146, "
A/T 4TH GEAR FUNCTION" .
❏ AT-151, "
A/T TCC S/V FUNCTION (LOCK-UP)" .
❏ AT-126, "
LINE PRESSURE SOLENOID VALVE" .
❏ AT-156, "
CONTROL UNIT (RAM)" .
❏ AT-157, "
CONTROL UNIT (ROM)" .
4-2.“Check at Idle”AT- 4 8
❏ AT-175, "Engine Cannot Be Started in “P” and “N” Position" .
❏ AT-176, "
In “P” Position, Vehicle Moves Forward or Backward When Pushed" .
❏ AT-176, "
In “N” Position, Vehicle Moves" .
❏ AT-177, "
Large Shock. “N” → “R” Position" .
❏ AT-179, "
Vehicle Does Not Creep Backward in “R” Position" .
❏ AT-181, "
Vehicle Does Not Creep Forward in “D”, “3”, “2” or “1” Position" .

AT-40
TROUBLE DIAGNOSIS

4. 4-3.“Cruise Test”AT- 5 0
Part 1
❏ AT-182, "
Vehicle Cannot Be Started From D1" .
❏ AT-184, "
A/T Does Not Shift: D1 → D2 or Does Not Kickdown: D4 → D2" .
❏ AT-186, "
A/T Does Not Shift: D2 → D3" .
❏ AT-188, "
A/T Does Not Shift: D3 → D4" .
❏ AT-191, "
A/T Does Not Perform Lock-up" .
❏ AT-193, "
A/T Does Not Hold Lock-up Condition" .
❏ AT-195, "
Lock-up Is Not Released" .
❏ AT-195, "
Engine Speed Does Not Return To Idle (Light Braking D4 → D3 )" .
Part 2AT- 5 1
❏ AT-182, "Vehicle Cannot Be Started From D1" .
❏ AT- 1 8 4 , "
A/T Does Not Shift: D1 → D2 or Does Not Kickdown: D4 → D2" .
❏ AT-186, "
A/T Does Not Shift: D2 → D3" .
❏ AT-188, "
A/T Does Not Shift: D3 → D4" .
Part 3AT- 5 2
❏ AT-197, "A/T Does Not Shift: D4 → 33 , When A/T Selector Lever “D” → “3”" .
❏ AT-203, "
Vehicle Does Not Decelerate By Engine Brake (D4 → 33 )" .
❏ AT-198, "
A/T Does Not Shift: 33 → 22 , When Selector Lever “3” → “2” Position" .
❏ AT-205, "
Vehicle Does Not Decelerate By Engine Brake (33 → 22 )" .
❏ AT-200, "
A/T Does Not Shift: 22 → 11 , When Selector Lever “2” → “1” Position" .
❏ AT-208, "
Vehicle Does Not Decelerate By Engine Brake (22 → 11 )" .
❏ Perform self-diagnostics. Enter checks for detected items. AT- 6 9
, AT- 7 6 .
❏ AT-133, "
CAN COMMUNICATION LINE" .
❏ AT-80, "
VEHICLE SPEED SENSOR·A/T (REVOLUTION SENSOR)" .
❏ AT-86, "
VEHICLE SPEED SENSOR MTR" .
❏ AT-120, "
TURBINE REVOLUTION SENSOR" .
❏ AT-90, "
SHIFT SOLENOID VALVE A" .
❏ AT-95, "
SHIFT SOLENOID VALVE B" .
❏ AT-100, "
OVERRUN CLUTCH SOLENOID VALVE" .
❏ AT-105, "
TORQUE CONVERTER CLUTCH SOLENOID VALVE" .
❏ AT-110, "
BATT/FLUID TEMP SEN (A/T FLUID TEMP SENSOR CIRCUIT AND TCM POWER
SOURCE)" .
❏ AT-116, "
ENGINE SPEED SIGNAL" .
❏ AT-136, "
A/T 1ST GEAR FUNCTION" .
❏ AT-140, "
A/T 2ND GEAR FUNCTION" .
❏ AT-143, "
A/T 3RD GEAR FUNCTION" .
❏ AT-146, "
A/T 4TH GEAR FUNCTION" .
❏ AT-151, "
A/T TCC S/V FUNCTION (LOCK-UP)" .
❏ AT-126, "
LINE PRESSURE SOLENOID VALVE" .
❏ AT-156, "
CONTROL UNIT (RAM)" .
❏ AT-157, "
CONTROL UNIT (ROM)" .
5.❏ For self-diagnosis NG items, inspect each component. Repair or replace the damaged parts.
6.❏ Perform “Road Test”.AT- 4 8
7.❏ Perform the Diagnostic Procedures for all remaining items marked NG. Repair or replace the damaged parts.
Refer to the Symptom Chart when you perform the procedures. (The chart also shows some other possible
symptoms and the component inspection orders.)AT- 5 5
8.❏ Erase DTC from TCM and ECM memories.AT- 6 9AT- 7 9

TROUBLE DIAGNOSIS
AT-47
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5. Start engine and measure line pressure at idle and stall speed.
CAUTION:

Keep the brake pedal pressed all the way down during
measurement.

When measuring line pressure at stall speed, refer to AT-
43, "STALL TEST" .
Line Pressure
Judgement of Line Pressure Test
SAT493G
Engine speed rpmLine pressure kPa (bar, kg/cm2 , psi)
“D”, “3”, “2” and “1” positions “R” position
Idle 500 (5.00, 5.1, 73) 778 (7.78, 7.9, 113)
Stall 1,233 (12.33, 12.6, 179) 1,918 (19.18, 19.6, 278)
Judgement Suspected parts
At idleLine pressure is low in all positions.

Oil pump wear

Control piston damage

Pressure regulator valve or plug sticking

Spring for pressure regulator valve damaged

Fluid pressure leakage between oil strainer and pressure regulator valve

Clogged strainer
Line pressure is low in particular posi-
tion.

Fluid pressure leakage between manual valve and particular clutch

For example, line pressure is:
− Low in “R” and “1” positions, but
− Normal in “D”, “3” and “2” positions.
Therefore, fluid leakage exists at or around low and reverse brake circuit.
Refer to AT-18, "
CLUTCH AND BAND CHART" .
Line pressure is high.

Accelerator pedal position signal malfunction

A/T fluid temperature sensor damaged

Line pressure solenoid valve sticking

Short circuit of line pressure solenoid valve circuit

Pressure modifier valve sticking

Pressure regulator valve or plug sticking

Open in dropping resistor circuit
At stall
speedLine pressure is low.

Accelerator pedal position signal malfunction

Line pressure solenoid valve sticking

Short circuit of line pressure solenoid valve circuit

Pressure regulator valve or plug sticking

Pressure modifier valve sticking

Pilot valve sticking

TROUBLE DIAGNOSIS
AT-55
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Symptom ChartBCS0010B
Numbers are arranged in order of inspection.
Perform inspections starting with number one and work up.
Items Symptom Condition Diagnostic item Reference page
No Lock-up
Engagement/
TCC InoperativeTorque converter
is not locked up.ON vehicle1. Accelerator pedal position sensor
EC-272
*1, EC-652*2
2. Vehicle speed sensor·A/T (Revolution
sensor) and vehicle speed sensor·MTRAT- 8 0, AT- 8 6
3. PNP switchAT- 1 6 1
4. Engine speed signalAT- 11 6
5. A/T fluid temperature sensorAT- 11 0
6. Line pressure testAT- 4 6
7. Torque converter clutch solenoid valveAT- 1 0 5
8. Control valve assemblyAT- 2 2 5
OFF vehicle 9. Torque converterAT- 2 5 5
Torque converter
clutch piston slip.ON vehicle1. A/T fluid levelAT- 1 4
2. Accelerator pedal position sensor
EC-272*1, EC-652*2
3. Line pressure testAT- 4 6
4. Torque converter clutch solenoid valveAT- 1 0 5
5. Line pressure solenoid valveAT- 1 2 6
6. Control valve assemblyAT- 2 2 5
OFF vehicle 7. Torque converterAT- 2 5 5
Lock-up point is
extremely high or
low.ON vehicle1. Accelerator pedal position sensor
EC-272
*1, EC-652*2
2. Vehicle speed sensor·A/T (Revolution
sensor) and vehicle speed sensor·MTRAT- 8 0, AT- 8 6
3. Torque converter clutch solenoid valveAT- 1 0 5
4. Control valve assemblyAT- 2 2 5
Shift ShockSharp shock in
shifting from “N”
to “D” position.ON vehicle1. Engine idle speed
EC-45
*1, EC-387*2
2. Accelerator pedal position sensor
EC-272*1, EC-652*2
3. Line pressure testAT- 4 6
4. A/T fluid temperature sensorAT- 11 0
5. Engine speed signalAT- 11 6
6. Line pressure solenoid valveAT- 1 2 6
7. Control valve assemblyAT- 2 2 5
8. N-D accumulatorAT- 2 2 5
OFF vehicle 9. Forward clutchAT- 3 0 7
Too sharp a
shock in change
from D
1 to D2 .ON vehicle1. Accelerator pedal position sensor
EC-272
*1, EC-652*2
2. Line pressure testAT- 4 6
3. Accumulator servo releaseAT- 2 2 5
4. Control valve assemblyAT- 2 2 5
5. A/T fluid temperature sensorAT- 11 0
OFF vehicle 6. Brake bandAT- 3 2 9

AT-56
TROUBLE DIAGNOSIS

Shift ShockToo sharp a
shock in change
from D
2 to D3 .ON vehicle1. Accelerator pedal position sensor
EC-272
*1, EC-652*2
2. Line pressure testAT- 4 6
3. Control valve assemblyAT-225
OFF vehicle4. High clutchAT-3015. Brake bandAT-329
Too sharp a
shock in change
from D
3 to D4 .ON vehicle1. Accelerator pedal position sensor
EC-272
*1, EC-652*2
2. Line pressure testAT- 4 6
3. Control valve assemblyAT-225
OFF vehicle4. Brake bandAT-3295. Overrun clutchAT-307
6. Forward one-way clutchAT-319
Gear change
shock felt during
deceleration by
releasing acceler-
ator pedal.ON vehicle1. Accelerator pedal position sensor
EC-272*1, EC-652*2
2. Line pressure testAT- 4 6
3. Overrun clutch solenoid valveAT-100
4. Control valve assemblyAT-225
Large shock
changing from 1
2
to 1
1 in “1” posi-
tion.ON vehicle 1. Control valve assemblyAT-225OFF vehicle 2. Low & reverse brakeAT-315
Improper Shift
TimingToo high a gear
change point from
D
1 to D2 , from
D
2 to D3 , from
D
3 to D4 .ON vehicle1. Accelerator pedal position sensor
EC-272
*1, EC-652*2
2. Vehicle speed sensor·A/T (Revolution
sensor) and vehicle speed sensor·MTRAT- 8 0, AT- 8 6
3. Shift solenoid valve AAT- 9 0
4. Shift solenoid valve BAT- 9 5
Gear change
directly from D
1
to D
3 occurs.ON vehicle1. A/T fluid levelAT- 1 4
2. Accumulator servo releaseAT-225
OFF vehicle 3. Brake bandAT-329
Too high a
change point from
D
4 to D3 , from
D
3 to D 2 , from
D
2 to D1 .ON vehicle1. Accelerator pedal position sensor
EC-272
*1, EC-652*2
2. Vehicle speed sensor·A/T (Revolution
sensor) and vehicle speed sensor·MTRAT- 8 0, AT- 8 6
Kickdown does
not operate when
depressing pedal
in D
4 within kick-
down vehicle
speed.ON vehicle1. Accelerator pedal position sensor
EC-272
*1, EC-652*2
2. Vehicle speed sensor·A/T (Revolution
sensor) and vehicle speed sensor·MTRAT- 8 0, AT- 8 6
3. Shift solenoid valve AAT- 9 0
4. Shift solenoid valve BAT- 9 5
Kickdown oper-
ates or engine
overruns when
depressing pedal
in D
4 beyond
kickdown vehicle
speed limit.ON vehicle1. Vehicle speed sensor·A/T (Revolution
sensor) and vehicle speed sensor·MTRAT- 8 0
, AT- 8 6
2. Accelerator pedal position sensor
EC-272*1, EC-652*2
3. Shift solenoid valve AAT- 9 0
4. Shift solenoid valve BAT- 9 5
Gear change
from 2
2 to 23 in
“2” position.ON vehicle1. PNP switchAT-161
2. A/T positionAT-215
Items Symptom Condition Diagnostic item Reference page

TROUBLE DIAGNOSIS
AT-57
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Improper Shift
TimingGear change
from 11 to 12 in
“1” position.ON vehicle1. PNP switchAT- 1 6 12. A/T positionAT- 2 1 5
No Down ShiftFailure to change
gear from D
4 to
D
3 .ON vehicle1. A/T fluid levelAT- 1 4
2. Accelerator pedal position sensor
EC-272*1, EC-652*2
3. Overrun clutch solenoid valveAT- 1 0 0
4. Shift solenoid valve A AT- 9 0
5. Line pressure solenoid valveAT- 1 2 6
6. Control valve assemblyAT- 2 2 5
OFF vehicle7. Brake bandAT- 3 2 98. Overrun clutchAT- 3 0 7
Failure to change
gear from D
3 to
D
2 or from D4 to
D
2 .ON vehicle1. A/T fluid levelAT- 1 4
2. Accelerator pedal position sensor
EC-272*1, EC-652*2
3. Shift solenoid valve AAT- 9 0
4. Shift solenoid valve BAT- 9 5
5. Control valve assemblyAT- 2 2 5
OFF vehicle6. High clutchAT- 3 0 17. Brake bandAT- 3 2 9
Failure to change
gear from D
2 to
D
1 or from D3 to
D
1 .ON vehicle1. A/T fluid levelAT- 1 4
2. Accelerator pedal position sensor
EC-272*1, EC-652*2
3. Shift solenoid valve AAT- 9 0
4. Shift solenoid valve BAT- 9 5
5. Control valve assemblyAT- 2 2 5
OFF vehicle6. Low one-way clutchAT- 2 5 57. High clutchAT- 3 0 1
8. Brake bandAT- 3 2 9
Failure to change
from 3
3 to 22
when changing
lever into “2” posi-
tion.
AT-198ON vehicle1. Accelerator pedal position sensor
EC-272
*1, EC-652*2
2. Shift solenoid valve BAT- 9 5
3. Control valve assembly AT- 2 2 5
4. A/T positionAT- 2 1 5
OFF vehicle 5. Brake bandAT- 3 2 9
Does not change
from 1
2 to 11 in
“1” position.ON vehicle1. PNP switchAT- 1 6 1
2. Vehicle speed sensor·A/T (Revolution
sensor) and vehicle speed sensor·MTRAT- 8 0, AT- 8 6
3. Shift solenoid valve AAT- 9 0
4. Control valve assemblyAT- 2 2 5
5. Overrun clutch solenoid valveAT- 1 0 0
OFF vehicle6. Overrun clutchAT- 3 0 77. Low & reverse brakeAT- 3 1 5
Items Symptom Condition Diagnostic item Reference page

AT-58
TROUBLE DIAGNOSIS

No Up ShiftFailure to change
gear from D
1 to
D
2 .ON vehicle1. A/T positionAT-215
2. Shift solenoid valve AAT- 9 0
3. Control valve assemblyAT-225
4. Vehicle speed sensor·A/T (Revolution
sensor) and vehicle speed sensor·MTRAT- 8 0, AT- 8 6
5. Accelerator pedal position sensor
EC-272*1, EC-652*2
OFF vehicle 6. Brake bandAT-329
Failure to change
gear from D
2 to
D
3 .ON vehicle1. A/T positionAT-215
2. Shift solenoid valve BAT- 9 5
3. Control valve assemblyAT-225
4. Vehicle speed sensor·A/T (Revolution
sensor) and vehicle speed sensor·MTRAT- 8 0, AT- 8 6
5. Accelerator pedal position sensor
EC-272*1, EC-652*2
OFF vehicle6. High clutchAT-3017. Brake bandAT-329
Failure to change
gear from D
3 to
D
4 .ON vehicle 1. PNP switchAT-161
2. 3rd position switchAT-161
3. A/T positionAT-215
4. Shift solenoid valve AAT- 9 0
5. Vehicle speed sensor·A/T (Revolution
sensor) and vehicle speed sensor·MTRAT- 8 0, AT- 8 6
6. A/T fluid temperature sensorAT- 11 0
OFF vehicle 7. Brake band AT-329
A/T does not shift
to D
4 when driv-
ing with changing
lever into “D”
position.ON vehicle1. Accelerator pedal position sensor
EC-272
*1, EC-652*2
2. PNP switchAT-161
3. 3rd position switchAT-161
4. Vehicle speed sensor·A/T (Revolution
sensor) and vehicle speed sensor·MTRAT- 8 0, AT- 8 6
5. Shift solenoid valve AAT- 9 0
6. Overrun clutch solenoid valveAT-100
7. Control valve assemblyAT-225
8. A/T fluid temperature sensorAT- 11 0
9. Line pressure solenoid valveAT-126
OFF vehicle10. Brake bandAT-32911. Overrun clutchAT-307
Items Symptom Condition Diagnostic item Reference page