sensor NISSAN X-TRAIL 2003 Service Repair Manual

ON BOARD DIAGNOSTIC SYSTEM DESCRIPTION
AT-243
[EXC.F/EURO-OBD]
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2. Touch “SELF-DIAG RESULTS”.
Display shows malfunction experienced since the last erasing
operation.
CONSULT-II performs “REAL TIME DIAG”.
Also, any malfunction detected while in this mode will be dis-
played at real time.
SELF-DIAGNOSTIC RESULT TEST MODE
CAUTION:
If malfunction is detected in multiple systems including CAN communication line, CAN communication line trouble diagnosis
shall be performed first.
SAT987J
Items (CONSULT-II screen terms) Malfunction is detected when... Remarks
No failure
(NO SELF DIAGNOSTIC FAIL-
URE INDICATED FURTHER
TESTING MAY BE REQUIRED)

No failure has been detected.
INITIAL START

This is not a malfunction message (Whenever shutting off a power
supply to the TCM, this message appears on the screen.)
VHCL SPEED SEN·A/T

TCM does not receive the proper voltage signal from the sensor.
VHCL SPEED SEN·MTR

TCM does not receive the proper voltage signal from the sensor.
THROTTLE POSI SEN

TCM receives an excessively low or high voltage from the sensor.
SHIFT SOLENOID/V A

TCM detects an improper voltage drop when it tries to operate the
solenoid valve.
SHIFT SOLENOID/V B

TCM detects an improper voltage drop when it tries to operate the
solenoid valve.
OVERRUN CLUTCH S/V

TCM detects an improper voltage drop when it tries to operate the
solenoid valve.
T/C CLUTCH SOL/V

TCM detects an improper voltage drop when it tries to operate the
solenoid valve.
BATT/FLUID TEMP SEN

TCM receives an excessively low or high voltage from the sensor.To be displayed in case
of abnormality and when
no recording is made.
ENGINE SPEED SIG

TCM does not receive the proper voltage signal from the ECM.
LINE PRESSURE S/V

TCM detects an improper voltage drop when it tries to operate the
solenoid valve.
CAN COMM CIRCUIT

When malfunction is detected in CAN communication line.
CONTROL UNIT (RAM)

TCM memory (RAM) is malfunctioning Refer to AT-286
CONTROL UNIT (ROM)

TCM memory (ROM) is malfunctioning Refer to AT-286
CONT UNIT (EEP ROM)

TCM memory (EEP ROM) is malfunctioning. Refer to AT-286

AT-248
[EXC.F/EURO-OBD]
ON BOARD DIAGNOSTIC SYSTEM DESCRIPTION

JUDGEMENT OF SELF-DIAGNOSIS CODE
O/D OFF indicator lamp:
All judgement flickers are the same.
All circuits that can be confirmed by self-diagnosis are OK.1st judgement flicker is longer than others.
Revolution sensor circuit is short-circuited or disconnected.

Go to VEHICLE SPEED SENSOR·A/T (REVOLUTION SEN-
SOR).
Refer to AT- 3 3 2
2nd judgement flicker is longer than others.
Vehicle speed sensor circuit is short-circuited or disconnected.

Go to VEHICLE SPEED SENSOR·MTR.
Refer to AT-3393rd judgement flicker is longer than others.
Accelerator pedal position (APP) sensor circuit is short-circuited
or disconnected.

Go to ACCELERATOR PEDAL POSITION (APP) SENSOR.
Refer to AT- 3 4 5
4th judgement flicker is longer than others.
Shift solenoid valve A circuit is short-circuited or disconnected.

Go to SHIFT SOLENOID VALVE A.
Refer to AT-3505th judgement flicker is longer than others.
Shift solenoid valve B circuit is short-circuited or disconnected.

Go to SHIFT SOLENOID VALVE B.
Refer to AT- 3 5 6
SCIA4672ESCIA5591E
SCIA5592ESCIA5593E
SCIA5594ESCIA5595E

ON BOARD DIAGNOSTIC SYSTEM DESCRIPTION
AT-249
[EXC.F/EURO-OBD]
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6th judgement flicker is longer than others.
Overrun clutch solenoid valve circuit is short-circuited or discon-
nected.

Go to OVERRUN CLUTCH SOLENOID VALVE.
Refer to AT- 3 6 27th judgement flicker is longer than others.
Torque converter clutch solenoid valve circuit is short-circuited or
disconnected.

Go to TORQUE CONVERTER CLUTCH SOLENOID VALVE.
Refer to AT-368
8th judgement flicker is longer than others.
A/T fluid temperature sensor is disconnected or TCM power
source circuit is damaged.

Go to BATT/FLUID TEMP SEN(A/T FLUID TEMP SENSOR
CIRCUIT AND TCM POWER SOURCE).
Refer to AT- 3 7 49th judgement flicker is longer than others.
Engine speed signal circuit is short-circuited or disconnected.

Go to ENGINE SPEED SIGNAL.
Refer to AT-382
O/D OFF indicator lamp:
SCIA5596ESCIA5597E
SCIA5598ESCIA5599E

TROUBLE DIAGNOSIS — INTRODUCTION
AT-251
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TROUBLE DIAGNOSIS — INTRODUCTIONPFP:00000
IntroductionECS004TF
The TCM receives a signal from the vehicle speed sensor, throttle
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 problem that occurs intermit-
tently rather than continuously. Most intermittent problems 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 problems. A road
test with CONSULT-II or a circuit tester connected should be per-
formed. Follow the “Work Flow”. Refer to AT- 6 1
.
Before undertaking actual checks, take a few minutes to talk with a
customer who approaches with a drive ability complaint. The cus-
tomer can supply good information about such problems, especially
intermittent ones. Find out what symptoms are present and under
what conditions they occur. A “Diagnostic Worksheet” like the exam-
ple (AT- 5 8
) should be used.
Start your diagnosis by looking for “conventional” problems first. This
will help troubleshoot drive ability problems on an electronically con-
trolled engine vehicle.
Also check related Service bulletins for information.
SAT631IA
SAT632I
SEF234G

TROUBLE DIAGNOSIS — INTRODUCTION
AT-253
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Diagnostic Worksheet
1.❏ Read the Fail-safe and listen to customer complaints.AT- 11,
AT- 2 5 2
2.❏ Check A/T fluidAT- 2 5 6
❏ Leakage (Follow specified procedure)
❏ Fluid condition
❏ Fluid level
3.❏ Perform Stall Test and Line Pressure Test.AT- 2 5 7
,
AT- 2 6 0
❏ 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 all Road Test and mark required procedures.AT- 2 6 2
4-1. Check before engine is started.AT- 2 6 3
❏ O/D OFF Indicator Lamp Does Not Come On, AT- 2 9 1 .
❏ SELF-DIAGNOSTIC CONFIRMATION PROCEDURE — Mark detected items.
❏ Vehicle speed sensor·A/T (Revolution sensor), AT- 3 3 2
.
❏ Vehicle speed sensor·MTR, AT-339
.
❏ Accelerator pedal position (APP) sensor, AT-345
.
❏ Shift solenoid valve A, AT- 3 5 0
.
❏ Shift solenoid valve B, AT- 3 5 6
.
❏ Overrun clutch solenoid valve, AT- 3 6 2
.
❏ Torque converter clutch solenoid valve, AT-368
.
❏ A/T fluid temperature sensor and TCM power source, AT-374
.
❏ Engine speed signal, AT- 3 8 2
.
❏ Line pressure solenoid valve, AT-387
.
❏ CAN communication line, AT- 3 2 9
.
❏ Control unit (RAM), control unit (ROM), AT-198
.
❏ Control unit (EEP ROM), AT-200
.
❏ PNP & overdrive control switches, and throttle position sensor, AT- 3 2 4
.
❏ Battery
❏ Others
4-2. Check at idleAT- 2 6 4
❏ Engine Cannot Be Started In “P” And “N” Position, AT- 2 9 3 .
❏ In “P” Position, Vehicle Moves Forward Or Backward When Pushed, AT- 2 9 4
.
❏ In “N” Position, Vehicle Moves, AT- 2 9 5
.
❏ Large Shock. “N” → “R” Position, AT- 2 9 6
.
❏ Vehicle Does Not Creep Backward In “R” Position, AT- 2 9 7
.
❏ Vehicle Does Not Creep Forward In “D”, “2” Or “1” Position, AT-299
.

AT-254
[EXC.F/EURO-OBD]
TROUBLE DIAGNOSIS — INTRODUCTION

4. 4-3. Cruise testAT-266,
AT-270
Part-1
❏ Vehicle Cannot Be Started From D
1 , AT- 3 0 1 .
❏ A/T Does Not Shift: D
1 → D2 Or Does Not Kickdown: D4 → D2 , AT-304 .
❏ A/T Does Not Shift: D
2 → D3 , AT- 3 0 7 .
❏ A/T Does Not Shift: D
3 → D4 , AT- 3 0 9 .
❏ A/T Does Not Perform Lock-up,AT- 3 11
.
❏ A/T Does Not Hold Lock-up Condition, AT- 3 1 2
.
❏ Lock-up Is Not Released, AT- 3 1 4
.
❏ Engine Speed Does Not Return To Idle (Light Braking D
4 → D3 ), AT-315 .
Part-2AT-273
❏ Vehicle Does Not Start From D1 , AT- 3 1 7 .
❏ A/T Does Not Shift: D
1 → D2 Or Does Not Kickdown: D4 → D2 , AT-304 .
❏ A/T Does Not Shift: D
2 → D3 , AT- 3 0 7 .
❏ A/T Does Not Shift: D
3 → D4 , AT- 3 0 9 .
Part-3AT-275
❏ A/T Does Not Shift: D4 → D3 When Overdrive Control Switch “ON” → “OFF”, AT-318 .
❏ Engine Speed Does Not Return To Idle (Engine Brake In D
3 ), AT- 3 1 5 .
❏ A/T Does Not Shift: D
3 → 22 , When Selector Lever “D” → “2” Position, AT- 3 1 9 .
❏ Engine Speed Does Not Return To Idle (Engine Brake In 2
2 ),AT-315 .
❏ A/T Does Not Shift: 2
2 → 11 , When Selector Lever “2” → “1” Position, AT-320 .
❏ Vehicle Does Not Decelerate By Engine Brake, AT- 3 2 2
.
❏ TCM Self-diagnosis Does Not Activate (PNP & Overdrive Control Switches, and throttle position sensor
Circuit Checks), AT-324
.
❏ SELF-DIAGNOSTIC PROCEDURE — Mark detected items.
❏ Vehicle speed sensor·A/T (Revolution sensor), AT-332
.
❏ Vehicle speed sensor·MTR, AT- 3 3 9
.
❏ Accelerator pedal position (APP) sensor, AT-345
.
❏ Shift solenoid valve A, AT-350
.
❏ Shift solenoid valve B, AT-356
.
❏ Overrun clutch solenoid valve, AT-362
.
❏ Torque converter clutch solenoid valve, AT- 3 6 8
.
❏ Batt/fluid temp sen (A/T fluid temperature sensor and TCM power source), AT-374
.
❏ Engine speed signal, AT-382
.
❏ Line pressure solenoid valve, AT-387
.
❏ CAN communication line, AT-329
.
❏ Control unit (RAM), control unit (ROM), AT- 1 9 8
.
❏ Control unit (EEP ROM), AT- 2 0 0
.
❏ PNP & overdrive control switches, and throttle position sensor, AT- 3 2 4
.
❏ Battery
❏ Others
5.❏ For self-diagnosis NG items, inspect each component. Repair or replace the damaged parts.AT-246
6.❏ Perform all Road Test and re-mark required procedures.AT-262
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-277
8.❏ Erase self-diagnosis code from TCM memories.AT-245, AT-
250

TROUBLE DIAGNOSIS — BASIC INSPECTION
AT-261
[EXC.F/EURO-OBD]
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5. Start engine and measure line pressure at idle and stall speed.

When measuring line pressure at stall speed, follow the
stall test procedure.
LINE PRESSURE
JUDGEMENT OF LINE PRESSURE TEST
SAT493G
Check lock-up hold.Line pressure kPa (bar, kg/cm2 , psi)
“D”, “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 and 2 positions.
Therefore, fluid leakage exists at or around low and reverse brake circuit.
Refer to AT- 2 3
.
Line pressure is high.

Maladjustment of throttle position sensor

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.

Maladjustment of throttle position sensor

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 — BASIC INSPECTION
AT-269
[EXC.F/EURO-OBD]
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14. Touch “DISPLAY”.
15. Touch “PRINT”.
16. Check the monitor data printed out.
17. Continue cruise test part 2 and 3.
Without CONSULT-II

Throttle position sensor can be checked by voltage across termi-
nals 41 and 42 of TCM.
SAT974J
SAT975J
SCIA0710E

TROUBLE DIAGNOSIS — GENERAL DESCRIPTION
AT-277
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TROUBLE DIAGNOSIS — GENERAL DESCRIPTIONPFP:00000
Symptom ChartECS004VV
Numbers are arranged in order of inspection.
Perform inspections starting with number one and work up.
Symptom Condition Diagnostic Item Reference Page
Engine cannot start in “P” and “N”
positions.
AT- 2 9 3
ON vehicle1. Ignition switch and starterPG-2
,
SC-21

2. Control cable adjustmentAT- 4 0 9
3. PNP switchAT- 3 2 4
Engine starts in position other than
“N” and “P” positions.
AT- 2 9 3
ON vehicle1. Control cable adjustmentAT- 4 0 92. PNP switchAT- 3 2 4
Transaxle noise in “P” and “N” posi-
tions.ON vehicle1. Fluid levelAT- 2 5 6
2. Line pressure testAT- 2 6 0
3. Accelerator pedal position (APP) sensorAT- 3 4 5
4. Vehicle speed sensor·A/T (Revolution
sensor) and vehicle speed sensor·MTRAT- 3 3 2,
AT- 3 3 9
OFF vehicle5. Oil pumpAT- 4 4 36. Torque converterAT- 4 2 3
Vehicle moves when changing into “P”
position, or parking gear does not dis-
engage when shifted out of “P” posi-
tion.
AT- 2 9 4ON vehicle 1. Control cable adjustmentAT- 4 0 9
OFF vehicle 2. Parking componentsAT- 4 1 6,
AT- 4 4 0
Vehicle runs in “N” position.
AT- 2 9 5
ON vehicle 1. Control cable adjustmentAT- 4 0 9
OFF vehicle2. Forward clutchAT- 4 7 53. Reverse clutchAT- 4 6 4
4. Overrun clutchAT- 4 7 5
Vehicle will not run in “R” position (but
runs in “D”, “2” and “1” positions).
Clutch slips.
Very poor acceleration.
AT- 2 9 7
ON vehicle1. Control cable adjustmentAT- 4 0 9
2. Stall testAT- 2 5 7
3. Line pressure testAT- 2 6 0
4. Line pressure solenoid valveAT- 3 8 7
5. Control valve assemblyAT- 4 0 4
Vehicle will not run in “R” position (but
runs in “D”, “2” and “1” positions).
Clutch slips.
Very poor acceleration.
AT- 2 9 7
OFF vehicle6. Reverse clutchAT- 4 6 4
7. High clutchAT- 4 6 9
8. Forward clutchAT- 4 7 5
9. Overrun clutchAT- 4 7 5
10. Low & reverse brakeAT- 4 8 3
Vehicle braked when shifting into “R”
position.ON vehicle1. Fluid levelAT- 2 5 6
2. Line pressure testAT- 2 6 0
3. Line pressure solenoid valveAT- 3 8 7
4. Control valve assemblyAT- 4 0 4
OFF vehicle5. High clutchAT- 4 6 96. Brake bandAT- 4 9 7
7. Forward clutchAT- 4 7 5
8. Overrun clutchAT- 4 7 5

AT-278
[EXC.F/EURO-OBD]
TROUBLE DIAGNOSIS — GENERAL DESCRIPTION

Sharp shock in shifting from “N” to “D”
position.ON vehicle1. Engine idling rpmEC-506
2. Accelerator pedal position (APP) sensorAT-345
3. Line pressure testAT-260
4. A/T fluid temp sen circ and TCM pow
sourAT-374
5. Engine speed signalAT-382
6. Line pressure solenoid valveAT-387
7. Control valve assemblyAT-404
8. Accumulator N-DAT-404
OFF vehicle 9. Forward clutchAT-475
Vehicle will not run in “D” and “2” posi-
tions (but runs in “1” and “R” posi-
tions).ON vehicle 1. Control cable adjustmentAT-409
OFF vehicle 2. Low one-way clutchAT-416,
AT-423
Vehicle will not run in “D”, “1”, “2” posi-
tions (but runs in “R” position). Clutch
slips. Very poor acceleration.
AT- 2 9 9
ON vehicle1. Fluid levelAT-256
2. Stall testAT-257
3. Line pressure testAT-260
4. Line pressure solenoid valveAT-387
5. Control valve assemblyAT-404
6. Accumulator N-DAT-404
Vehicle will not run in “D”, “1”, “2” posi-
tions (but runs in “R” position). Clutch
slips. Very poor acceleration.
AT- 2 9 9
OFF vehicle7. Reverse clutch AT-464
8. High clutchAT-469
9. Forward clutchAT-475
10. Forward one-way clutchAT-416
11. Low one-way clutchAT-416,
AT-423
Clutches or brakes slip somewhat in
starting.ON vehicle1. Fluid levelAT-256
2. Control cable adjustmentAT-409
3. Accelerator pedal position (APP) sensorAT-345
4. Line pressure testAT-260
5. Line pressure solenoid valveAT-387
6. Control valve assemblyAT-404
7. Accumulator N-DAT-404
8. Shift solenoid valve AAT-350
9. Shift solenoid valve BAT-356
10. Overrun clutch solenoid valveAT-362
11. Torque converter clutch solenoid valveAT-368
OFF vehicle12. Forward clutchAT-475
13. Reverse clutchAT-464
14. Low & reverse brakeAT-483
15. Oil pumpAT-443
16. Torque converterAT-423
Excessive creep. ON vehicle 1. Engine idling rpmEC-506
Symptom Condition Diagnostic Item Reference Page