2001 NISSAN X-TRAIL sensor

ON BOARD DIAGNOSTIC SYSTEM DESCRIPTION
AT-53
[EURO-OBD]
D
E
F
G
H
I
J
K
L
MA
B
AT
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 DTC P0720 VEHICLE SPEED SENSOR·A/T (REVOLU-
TION SENSOR).
Refer to AT-122
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- 1 9 93rd judgement flicker is longer than others.
Accelerator pedal position (APP) sensor circuit is short-circuited
or disconnected.
 Go to DTC P1705 ACCELEPATOR PEDAL POSITION (APP)
SENSOR.
Refer to AT-180
4th judgement flicker is longer than others.
Shift solenoid valve A circuit is short-circuited or disconnected.
 Go to DTC P0750 SHIFT SOLENOID VALVE A.
Refer to AT- 1 7 05th judgement flicker is longer than others.
Shift solenoid valve B circuit is short-circuited or disconnected.
 Go to DTC P0755 SHIFT SOLENOID VALVE B.
Refer to AT-175
SCIA0694ESCIA0695E
SCIA0696ESCIA0697E
SCIA0698ESCIA0699E

AT-54
[EURO-OBD]
ON BOARD DIAGNOSTIC SYSTEM DESCRIPTION
6th judgement flicker is longer than others.
Overrun clutch solenoid valve circuit is short-circuited or discon-
nected.
 Go to DTC P1760 OVERRUN CLUTCH SOLENOID VALVE.
Refer to AT-1857th judgement flicker is longer than others.
Torque converter clutch solenoid valve circuit is short-circuited or
disconnected.
 Go to DTC P0740 TORQUE CONVERTER CLUTCH SOLE-
NOID VALVE.
Refer to AT- 1 5 8
8th judgement flicker is longer than others.
A/T fluid temperature sensor is disconnected or TCM power
source circuit is damaged.
 Go to DTC BATT/FLUID TEMP SEN A/T FLUID TEMP SEN-
SOR CIRCUIT AND TCM POWER SOURCE.
Refer to AT- 1 9 39th judgement flicker is longer than others.
Engine speed signal circuit is short-circuited or disconnected.
 Go to DTC P0725 ENGINE SPEED SIGNAL.
Refer to AT- 1 2 7
O/D OFF indicator lamp:
SCIA0700ESCIA0701E
SCIA0702ESCIA0703E

AT-56
[EURO-OBD]
TROUBLE DIAGNOSIS — INTRODUCTION
TROUBLE DIAGNOSIS — INTRODUCTION
PFP:00000
IntroductionECS004QO
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.
The TCM also communicates with the ECM by means of a signal
sent from sensing elements used with the EURO-OBD related parts
of the A/T system for malfunction-diagnostic purposes. The TCM is
capable of diagnosing malfunctioning parts while the ECM can store
malfunctions in its memory.
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 GST) or a circuit tester connected should
be performed. Follow the “Work Flow”. Refer to AT- 6 0 , "
Work Flow" .
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 7 , "
DIAGNOSTIC WORKSHEET" ) 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

AT-58
[EURO-OBD]
TROUBLE DIAGNOSIS — INTRODUCTION
Diagnostic Worksheet
1.❏ Read the Fail-safe and listen to customer complaints.AT-57, "Infor-
mation from
Customer"
2.❏ CHECK A/T FLUIDAT-63, "A/T
Fluid Check"❏ Leakage (Follow specified procedure)
❏ Fluid condition
❏ Fluid level
3.❏ Perform STALL TEST and LINE PRESSURE TEST.AT-64, "
Stall
Te s t",AT- 6 7 ,
"Line Pres-
sure Test"
❏ 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-68, "
Road
Te s t"
4-1. Check before engine is started.AT-70, "1.
CHECK
BEFORE
ENGINE IS
STARTED"
❏ O/D OFF Indicator Lamp Does Not Come On, AT-209, "O/D OFF Indicator Lamp Does Not Come On" .
❏ SELF-DIAGNOSTIC PROCEDURE/DIAGNOSTIC TROUBLE CODE (DTC) CONFIRMATION PRO-
CEDURE. — Mark detected items.
❏ PNP switch, AT-110, "
DTC P0705 PARK/NEUTRAL POSITION (PNP) SWITCH" .
❏ A/T fluid temperature sensor, AT-116, "
DTC P0710 A/T FLUID TEMPERATURE SENSOR CIR-
CUIT" .
❏ Vehicle speed sensor·A/T (Revolution sensor), AT-122, "
DTC P0720 VEHICLE SPEED SEN-
SOR·A/T (REVOLUTION SENSOR)" .
❏ Engine speed signal, AT-127, "
DTC P0725 ENGINE SPEED SIGNAL" .
❏ Torque converter clutch solenoid valve, AT-158, "
DTC P0740 TORQUE CONVERTER CLUTCH
SOLENOID VALVE" .
❏ Line pressure solenoid valve, AT-163, "
DTC P0745 LINE PRESSURE SOLENOID VALVE" .
❏ Shift solenoid valve A, AT-170, "
DTC P0750 SHIFT SOLENOID VALVE A" .
❏ Shift solenoid valve B, AT-175, "
DTC P0755 SHIFT SOLENOID VALVE B" .
❏ Accelerator pedal position (App) sensor, AT- 1 8 0 , "
DTC P1705 ACCELERATOR PEDAL POSITION
(APP) SENSOR" .
❏ Overrun clutch solenoid valve, AT-185, "
DTC P1760 OVERRUN CLUTCH SOLENOID VALVE" .
❏ PNP & overdrive control switches, and throttle position sensor, AT- 2 4 1 , "
TCM Self-diagnosis Does
Not Activate" .
❏ Batt/fluid temp sen (A/T fluid temperature sensor and TCM power source), AT-193, "
DTC BATT/
FLUID TEMP SEN (A/T FLUID TEMP SENSOR CIRCUIT AND TCM POWER SOURCE)" .
❏ Vehicle speed sensor·MTR, AT-199, "
DTC VEHICLE SPEED SENSOR MTR" .
❏ CAN communication line, AT-190, "
DTC U1000 CAN COMMUNICATION LINE" .
❏ Control unit (RAM), control unit (ROM), AT- 2 0 3 , "
DTC CONTROL UNIT (RAM), CONTROL UNIT
(ROM)" .
❏ Control unit (EEP ROM), AT- 2 0 5 , "
DTC CONTROL UNIT(EEPROM)" .
❏ Battery
❏ Others
4-2. Check at idleAT-71, "
2.
CHECK AT
IDLE"❏ Engine Cannot Be Started In “P” And “N” Position, AT- 2 11 , "Engine Cannot Be Started In “P” and “N”
Position" .
❏ In “P” Position, Vehicle Moves Forward Or Backward When Pushed, AT-212, "
In “P” Position, Vehicle
Moves Forward Or Backward When Pushed" .
❏ In “N” Position, Vehicle Moves, AT-213, "
In “N” Position, Vehicle Moves" .
❏ Large Shock. “N” → “R” Position, AT-214, "
Large Shock. “N”→“R” Position" .
❏ Vehicle Does Not Creep Backward In “R” Position, AT-215, "
Vehicle Does Not Creep Backward In “R”
Position" .
❏ Vehicle Does Not Creep Forward In “D”, “2” Or “1” Position, AT- 2 1 8 , "
Vehicle Does Not Creep Forward
In “D”,“2” Or “1” Position" .

TROUBLE DIAGNOSIS — INTRODUCTION
AT-59
[EURO-OBD]
D
E
F
G
H
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K
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MA
B
AT
4. 4-3. Cruise testAT- 7 4 , "3.
CRUISE
TEST"
AT- 7 8 ,
"Cruise Test
— Part 1"
Part-1
❏ Vehicle Cannot Be Started From D
1 , AT- 2 2 0 , "Vehicle Cannot Be Started From D1" .
❏ A/T Does Not Shift: D
1→ D2 Or Does Not Kickdown: D4→ D2 , AT-223, "A/T Does Not Shift: D1→
D2 Or Does Not Kickdown: D4→ D2" .
❏ A/T Does Not Shift: D
2→ D3 , AT- 2 2 5 , "A/T Does Not Shift: D2→ D3" .
❏ A/T Does Not Shift: D
3→ D4 , AT- 2 2 7 , "A/T Does Not Shift: D3→ D4" .
❏ A/T Does Not Perform Lock-up, AT-229, "
A/T Does Not Perform Lock-up" .
❏ A/T Does Not Hold Lock-up Condition, AT-230, "
A/T Does Not Hold Lock-up Condition" .
❏ Lock-up Is Not Released, AT-232, "
Lock-up Is Not Released" .
❏ Engine Speed Does Not Return To Idle (Light Braking D
4→ D3 ), AT-233, "Engine Speed Does Not
Return To Idle (Light Braking D4→ D3 )" .
Part-2AT- 8 1 ,
"Cruise Test
— Part 2"❏ Vehicle Does Not Start From D1 , AT- 2 3 4 , "Vehicle Does Not Start From D1" .
❏ A/T Does Not Shift: D
1→ D2 Or Does Not Kickdown: D4→ D2 , AT-223, "A/T Does Not Shift: D1→
D2 Or Does Not Kickdown: D4→ D2" .
❏ A/T Does Not Shift: D
2→ D3 , AT- 2 2 5 , "A/T Does Not Shift: D2→ D3" .
❏ A/T Does Not Shift: D
3→ D4 , AT- 2 2 7 , "A/T Does Not Shift: D3→ D4" .
Part-3AT- 8 3 ,
"Cruise Test
— Part 3"❏ A/T Does Not Shift: D4→ D3 When Overdrive Control Switch “ON” → “OFF”, AT-236, "A/T Does Not
Shift: D4→ D3 , When Overdrive Control Switch “ON”→“OFF”" .
❏ Engine Speed Does Not Return To Idle (Engine Brake In D
3 ), AT-233, "Engine Speed Does Not Return
To Idle (Light Braking D4→ D3 )" .
❏ A/T Does Not Shift: D
3→ 22 , When Selector Lever “D” → “2” Position, AT- 2 3 7 , "A/T Does Not Shift:
D3→ 22 , When Selector Lever “D”→“2” Position" .
❏ Engine Speed Does Not Return To Idle (Engine Brake In 2
2 ), AT- 2 3 3 , "Engine Speed Does Not Return
To Idle (Light Braking D4→ D3 )" .
❏ A/T Does Not Shift: 2
2→ 11 , When Selector Lever “2” → “1” Position, AT-238, "A/T Does Not Shift: 22
→ 11 , When Selector Lever “2”→“1” Position" .
❏ Vehicle Does Not Decelerate By Engine Brake, AT- 2 4 0 , "
Vehicle Does Not Decelerate By Engine
Brake" .
❏ TCM Self-diagnosis Does Not Activate (PNP & Overdrive control switches, and throttle position sensor
circuit checks), AT-241, "
TCM Self-diagnosis Does Not Activate" .
❏ SELF-DIAGNOSTIC PROCEDURE/DIAGNOSTIC TROUBLE CODE (DTC) CONFIRMATION PRO-
CEDURE — Mark detected items.
❏ PNP switch, AT- 11 0 , "
DTC P0705 PARK/NEUTRAL POSITION (PNP) SWITCH" .
❏ A/T fluid temperature sensor, AT- 11 6 , "
DTC P0710 A/T FLUID TEMPERATURE SENSOR CIR-
CUIT" .
❏ Vehicle speed sensor·A/T (Revolution sensor), AT- 1 2 2 , "
DTC P0720 VEHICLE SPEED SEN-
SOR·A/T (REVOLUTION SENSOR)" .
❏ Engine speed signal, AT- 1 2 7 , "
DTC P0725 ENGINE SPEED SIGNAL" .
❏ Torque converter clutch solenoid valve, AT-158, "
DTC P0740 TORQUE CONVERTER CLUTCH
SOLENOID VALVE" .
❏ Line pressure solenoid valve, AT-163, "
DTC P0745 LINE PRESSURE SOLENOID VALVE" .
❏ Shift solenoid valve A, AT- 1 7 0 , "
DTC P0750 SHIFT SOLENOID VALVE A" .
❏ Shift solenoid valve B, AT- 1 7 5 , "
DTC P0755 SHIFT SOLENOID VALVE B" .
❏ Accelerator pedal position (App) sensor, AT-180, "
DTC P1705 ACCELERATOR PEDAL POSITION
(APP) SENSOR" .
❏ Overrun clutch solenoid valve, AT- 1 8 5 , "
DTC P1760 OVERRUN CLUTCH SOLENOID VALVE" .
❏ PNP & overdrive control switches, and throttle position sensor, AT-241, "
TCM Self-diagnosis Does
Not Activate" .
❏ A/T fluid temperature sensor and TCM power source, AT-193, "
DTC BATT/FLUID TEMP SEN (A/T
FLUID TEMP SENSOR CIRCUIT AND TCM POWER SOURCE)" .
❏ Vehicle speed sensor·MTR, AT-199, "
DTC VEHICLE SPEED SENSOR MTR" .
❏ CAN communication line, AT- 1 9 0 , "
DTC U1000 CAN COMMUNICATION LINE" .
❏ Control unit (RAM), control unit (ROM), AT-203, "
DTC CONTROL UNIT (RAM), CONTROL UNIT
(ROM)" .
❏ Control unit (EEP ROM), AT-205, "
DTC CONTROL UNIT(EEPROM)" .
❏ Battery
❏ Others

AT-62
[EURO-OBD]
TROUBLE DIAGNOSIS — INTRODUCTION
*1:AT-57, "Information from Customer"*2:AT-58, "Diagnostic Worksheet"*3:AT- 7 , "Service Notice or Pre-
cautions"
*4:AT-63, "A/T Fluid Check"*5:AT-64, "Sta ll Tes t" and AT-67, "Line Pressure
Te s t"
*6:AT-68, "Road Test"
*7:AT-41, "CONSULT-II"*8:AT-37, "ON BOARD DIAGNOSTIC SYSTEM
DESCRIPTION"
*9:AT-50, "Diagnostic Procedure
Without CONSULT-II"
*10:AT- 11 0 , "DTC P0705 PARK/NEU-
TRAL POSITION (PNP) SWITCH"
*11:AT-199, "DTC VEHICLE SPEED SENSOR
MTR" and AT-203, "DTC CONTROL UNIT
(RAM), CONTROL UNIT (ROM)" t o AT-205,
"DTC CONTROL UNIT(EEPROM)"
*12:AT-209, "O/D OFF Indicator
Lamp Does Not Come On"
*13:AT-240, "Vehicle Does Not Deceler-
ate By Engine Brake"
*14:AT-86, "Symptom Chart"*15:AT-39, "HOW TO ERASE DTC"
*16:AT- 111 , "DIAGNOSTIC TROUBLE
CODE (DTC) CONFIRMATION
PROCEDURE"
*17:AT-199, "DTC VEHICLE SPEED SENSOR
MTR" and AT-203, "DTC CONTROL UNIT
(RAM), CONTROL UNIT (ROM)" t o AT-205,
"DTC CONTROL UNIT(EEPROM)"
*18: EC section

AT-68
[EURO-OBD]
TROUBLE DIAGNOSIS — BASIC INSPECTION
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: Refer to AT- 5 2 1 , "
SERVICE DATA AND SPECIFI-
CATIONS (SDS)" .
JUDGEMENT OF LINE PRESSURE TEST
Road TestECS004QT
DESCRIPTION
●The purpose of the test is to determine overall performance of A/
T and analyze causes of problems.
●The road test consists of the following three parts:
1. Check before engine is started
2. Check at idle
SAT493G
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- 1 9 , "
CLUTCH AND BAND CHART" .
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
SAT786A

TROUBLE DIAGNOSIS — BASIC INSPECTION
AT-77
[EURO-OBD]
D
E
F
G
H
I
J
K
L
MA
B
AT
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.
SAT975J
SCIA0710E