2003 NISSAN X-TRAIL sensor

ON BOARD DIAGNOSTIC SYSTEM DESCRIPTION
AT-269
[EXC.F/EURO-OBD]
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X: Applicable
-: Not applicable
*1: A/T COMM LINE means CAN COMM LINE in this model.
DATA MONITOR MODE (A/T)
Initial startlThis is not a malfunction message
(Whenever shutting off a power
supply to the TCM, this message
appears on the screen.)X
INITIAL START —
No failure
(NO SELF DIAGNOSTIC FAILURE INDI-
CATED FURTHER TESTING MAY BE
REQUIRED**)
lNo failure has been detected. X Detected items
(Screen terms for CONSULT-II, “SELF
DIAGNOSIS” test mode)
Malfunction is detected when ...TCM self-diagnosis
Remarks Available by O/D OFF
indicator lamp or “A/T”
on CONSULT-II “A/T” “ENGINE”
Item Displaymove to centor Monitor items
Description Remarks
TCM
Input
signalsCAN
comm
sig-
nalsMain
signalsSelection
from
menu
Vehicle speed
sensor 1 (A/T)
(Revolution sen-
sor)VHCL/S SE·A/T
[km/h] or [mph]
X——
lVehicle speed com-
puted from signal of
revolution sensor is
displayed.When racing engine in N
or P with vehicle station-
ary, CONSULT-II data
may not indicate 0 km/h
(0 mph).
Vehicle speed
sensor 2
(Meter)VHCL/S
SE·MTR
[km/h] or [mph]
X——
lVehicle speed com-
puted from signal of
vehicle speed sensor is
displayed.Vehicle speed display
may not be accurate
under approx. 10 km/h
(6 mph). It may not indi-
cate0km/h(0mph)
when vehicle is station-
ary.
Throttle position
sensorTHRTL POS
SEN
[V]X——
lThrottle position sensor
signal voltage is dis-
played.
A/T fluid tempera-
ture sensorFLUID TEMP SE
[V]
X——
lA/T fluid temperature
sensor signal voltage is
displayed.
lSignal voltage lowers
as fluid temperature
rises.
Battery voltage BATTERY VOLT
[V]X——
lSource voltage of TCM
is displayed.
Engine speed ENGINE SPEED
[rpm]
X—X
lEngine speed, com-
puted from engine
speed signal, is dis-
played.Engine speed display
may not be accurate
under approx. 800 rpm.
It may not indicate 0 rpm
even when engine is not
running.

AT-276
[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 toAT-392, "
VEHICLE SPEED SENSOR·A/T (REVOLU-
TION SENSOR)"
2nd judgement flicker is longer than others.
Vehicle speed sensor circuit is short-circuited or disconnected.

Go to VEHICLE SPEED SENSOR·MTR.
Reter toAT- 3 9 7 , "
DTC VEHICLE SPEED SENSOR MTR"
3rd judgement flicker is longer than others.

Go to (ACCELERATOR PEDAL POSITION (APP) SENSOR.
Refer toAT-401, "
ACCELE RATOR PEDAL POSITION (APP)
SENSOR"
4th judgement flicker is longer than others.
Shift solenoid valve A circuit is short-circuited or disconnected.

Go to SHIFT SOLENOID VALVE A.
Refer toAT- 4 0 6 , "
SHIFT SOLENOID VALVE A"
5th judgement flicker is longer than others.
Shift solenoid valve B circuit is short-circuited or disconnected.

Go to SHIFT SOLENOID VALVE B.
Refer toAT-4 11 , "
SHIFT SOLENOID VALVE B"
SCIA0694ESCIA0695E
SCIA0696ESCIA0697E
SCIA0698ESCIA0699E

ON BOARD DIAGNOSTIC SYSTEM DESCRIPTION
AT-277
[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 toAT-416, "
OVERRUN CLUTCH SOLENOID VALVE"
7th 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 toAT- 4 2 1 , "
TORQUE CONVERTER CLUTCH SOLENOID
VA LV E"
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 toAT-426, "
BATT/FLUID TEMP SEN (A/T FLUID TEMP
SENSOR CIRCUIT AND TCM POWER SOURCE)"
9th judgement flicker is longer than others.
Engine speed signal circuit is short-circuited or disconnected.

Go to ENGINE SPEED SIGNAL.
Refer toAT- 4 3 2 , "
ENGINE SPEED SIGNAL"
O/D OFF indicator lamp:
SCIA0700ESCIA0701E
SCIA0702ESCIA0703E

AT-278
[EXC.F/EURO-OBD]
ON BOARD DIAGNOSTIC SYSTEM DESCRIPTION
t1= 2.5 seconds t2= 2.0 seconds t3=1.0second t4= 1.0 second
HOW TO ERASE SELF-DIAGNOSTIC RESULTS (WITHOUT CONSULT-II)
1. If the ignition switch stays “ON” after repair work, be sure to turn ignition switch “OFF” once. Wait for at
least 3 seconds and then turn it “ON” again.
2. Perform “SELF-DIAGNOSTIC PROCEDURE (Without CONSULT-II)”. Refer toAT-273, "
Diagnostic Proce-
dure Without CONSULT-II"(EXC. for EURO-OBD).
3. Turn ignition switch “OFF”. (The self-diagnostic results will be erased.)
10th judgement flicker is longer than others.
Line pressure solenoid valve circuit is short-circuited or discon-
nected.

Go to LINE PRESSURE SOLENOID VALVE.
Refer toAT- 4 3 6 , "
LINE PRESSURE SOLENOID VALVE"
11th judgement flicker is longer than others.
The ECM-A/T communication line is open or shorted.

Go to CAN COMMUNICATION LINE.
Refer toAT-443, "
CAN CAMMUNICATION LINE"
Lamp comes OFF.
PNP switch, overdrive control switch or throttle position switch cir-
cuit is disconnected or TCM is damaged.

Go to 21. TCM Self-diagnosis Does Not Activate (PNP &
OVERDRIVE CONTROL SWITCHES, AND THROTTLE POSI-
TION SENSOR).
AT- 3 8 2 , "
21. TCM Self-diagnosis Does Not Activate (PNP & Over-
drive Control Switches, and Throttle Position Sensor Circuit
Checks)"
Flickers as shown below.
Battery power is low.
Battery has been disconnected for a long time.
Battery is connected conversely.
(When reconnecting TCM connectors.—This is a problem.) O/D OFF indicator lamp:
SCIA0704ESCIA0705E
SCIA0706ESAT804H

TROUBLE DIAGNOSIS — INTRODUCTION
AT-279
[EXC.F/EURO-OBD]
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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 toAT-284, "
Work Flow".
Before undertaking actual checks, take a few minutes to talk with a
customer who approaches with a driveability 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-280, "
DIAGNOSTIC WORKSHEET") should be used.
Start your diagnosis by looking for “conventional” problems first. This
will help troubleshoot driveability problems on an electronically con-
trolled engine vehicle.
Also check related Service bulletins for information.
SAT631IA
SAT632I
SEF234G

AT-282
[EXC.F/EURO-OBD]
TROUBLE DIAGNOSIS — INTRODUCTION
4.oPerform all ROAD TEST and mark required procedures.AT-291,
"Road Test"
4-
1.Check before engine is started.AT-292, "1.
CHECK
BEFORE
ENGINE IS
STARTED"
oSELF-DIAGNOSTIC CONFIRMATION PROCEDURE — Mark detected items.
oVehicle speed sensor·A/T (Revolution sensor),AT-392, "
VEHICLE SPEED SENSOR·A/T (REVO-
LUTION SENSOR)".
oVehicle speed sensor·MTR,AT- 3 9 7 , "
DTC VEHICLE SPEED SENSOR MTR".
oAccelerator pedal position (App) sensor,AT-401, "
ACCELE RATOR PEDAL POSITION (APP)
SENSOR".
oShift solenoid valve A,AT-406, "
SHIFT SOLENOID VALVE A".
oShift solenoid valve B,AT-4 11 , "
SHIFT SOLENOID VALVE B".
oOverrun clutch solenoid valve,AT-416, "
OVERRUNCLUTCHSOLENOIDVALVE".
oTorque converter clutch solenoid valve,AT- 4 2 1 , "
TORQUE CONVERTER CLUTCH SOLENOID
VA LV E".
oA/T fluid temperature sensor and TCM power source,AT-426, "
BATT/FLUID TEMP SEN (A/T
FLUID TEMP SENSOR CIRCUIT AND TCM POWER SOURCE)".
oEngine speed signal,AT-432, "
ENGINE SPEED SIGNAL".
oLine pressure solenoid valve,AT- 4 3 6 , "
LINE PRESSURE SOLENOID VALVE".
oCAN communication line,AT-4 4 3 , "
CAN CAMMUNICATION LINE".
oControl unit (RAM), control unit (ROM),AT- 2 2 6 , "
DTC CONTROL UNIT (RAM), CONTROL UNIT
(ROM)".
oControl unit (EEP ROM),AT-228, "
DTC CONTROL UNIT(EEPROM)".
oPNP & overdrive control switches, and throttle position sensor,AT- 3 8 2 , "
21. TCM Self-diagnosis
Does Not Activate (PNP & Overdrive Control Switches, and Throttle Position Sensor Circuit Checks)"
.
oBattery
oOthers
4-
2.Check at idleAT-293, "
2.
CHECK AT
IDLE"o1. O/D OFF Indicator Lamp Does Not Come On,AT-354, "1. O/D OFF Indicator Lamp Does Not Come
On".
o2. Engine Cannot Be Started In “P” And “N” Position,AT- 3 5 5 , "
2. Engine Cannot Be Started In“P”and“N”
Position".
o3. In “P” Position, Vehicle Moves Forward Or Backward When Pushed,AT- 3 5 6 , "
3. In“P”Position, Vehi-
cle Moves Forward Or Backward When Pushed".
o4. In “N” Position, Vehicle Moves,AT- 3 5 6 , "
4. In“N”Position, Vehicle Moves".
o5. Large Shock. “N”®“R” Position,AT-358, "
5. Large Shock.“N”®“R”Position".
o6. Vehicle Does Not Creep Backward In “R” Position,AT- 3 5 9 , "
6. Vehicle Does Not Creep Backward In
“R”Position".
o7. Vehicle Does Not Creep Forward In “D”, “2” Or “1” Position,AT- 3 6 2 , "
7. Vehicle Does Not Creep For-
ward In“D”,“2”Or“1”Position".

TROUBLE DIAGNOSIS — INTRODUCTION
AT-283
[EXC.F/EURO-OBD]
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4. 4-
3.Cruise testAT- 2 9 6 , "3.
CRUISE
TEST"
AT- 3 0 0 ,
"Cruise Test
—Part 1"
Part-1
o8. Vehicle Cannot Be Started From D
1,AT- 3 6 4 , "8. Vehicle Cannot Be Started From D1".
o9. A/T Does Not Shift: D
1®D2Or Does Not Kickdown: D4®D2,AT- 3 6 6 , "9. A/T Does Not Shift: D1
®D2Or Does Not Kickdown: D4®D2".
o10. A/T Does Not Shift: D
2®D3,AT-368, "10. A/T Does Not Shift: D2®D3".
o11. A/T Does Not Shift: D
3®D4,AT-371, "11.A/TDoesNotShift:D3®D4".
o12. A/T Does Not Perform Lock-up,AT- 3 7 4 , "
12. A/T Does Not Perform Lock-up".
o13. A/T Does Not Hold Lock-up Condition,AT- 3 7 5 , "
13. A/T Does Not Hold Lock-up Condition".
o14. Lock-up Is Not Released,AT- 3 7 6 , "
14. Lock-up Is Not Released".
o15. Engine Speed Does Not Return To Idle (Light Braking D
4®D3),AT-377, "15. Engine Speed Does
Not Return To Idle (Light Braking D4®D3)".
Part-2AT- 3 0 3 ,
"Cruise Test
—Part 2"o16. Vehicle Does Not Start From D1,AT- 3 7 9 , "16. Vehicle Does Not Start From D1".
o9. A/T Does Not Shift: D
1®D2Or Does Not Kickdown: D4®D2,AT- 3 6 6 , "9. A/T Does Not Shift: D1
®D2Or Does Not Kickdown: D4®D2".
o10. A/T Does Not Shift: D
2®D3,AT-368, "10. A/T Does Not Shift: D2®D3".
o11. A/T Does Not Shift: D
3®D4,AT-371, "11.A/TDoesNotShift:D3®D4".
Part-3AT- 3 0 5 ,
"Cruise Test
—Part 3"o17.A/TDoesNotShift:D4®D3When Overdrive Control Switch “ON”®“OFF”,AT-380, "17. A/T Does
Not Shift: D4®D3, When Overdrive Control Switch“ON”®“OFF”".
o15. Engine Speed Does Not Return To Idle (Engine Brake In D
3),AT-377, "15. Engine Speed Does Not
Return To Idle (Light Braking D4®D3)".
o18. A/T Does Not Shift: D
3®22, When Selector Lever “D”®“2” Position,AT-380, "18. A/T Does Not
Shift: D3®22, When Selector Lever“D”®“2”Position".
o15. Engine Speed Does Not Return To Idle (Engine Brake In 2
2),AT- 3 7 7 , "15. Engine Speed Does Not
Return To Idle (Light Braking D4®D3)".
o19. A/T Does Not Shift: 2
2®11, When Selector Lever “2”®“1” Position,AT-381, "19. A/T Does Not
Shift: 22®11, When Selector Lever“2”®“1”Position".
o20. Vehicle Does Not Decelerate By Engine Brake,AT- 3 8 1 , "
20. Vehicle Does Not Decelerate By Engine
Brake".
o21. TCM Self-diagnosis Does Not Activate (PNP & Overdrive Control Switches , and throttle position sen-
sor Circuit Checks),AT-382, "
21. TCM Self-diagnosis Does Not Activate (PNP & Overdrive Control
Switches, and Throttle Position Sensor Circuit Checks)".
oSELF-DIAGNOSTIC PROCEDURE — Mark detected items.
oVehicle speed sensor·A/T (Revolution sensor),AT- 3 9 2 , "
VEHICLE SPEED SENSOR·A/T (REVO-
LUTION SENSOR)".
oVehicle speed sensor·MTR,AT-397, "
DTC VEHICLE SPEED SENSOR MTR".
oAccelerator pedal position(APP) sensor,AT- 4 0 1 , "
ACCELE RATOR PEDAL POSITION (APP)
SENSOR".
oShift solenoid valve A,AT-406, "
SHIFT SOLENOID VALVE A".
oShift solenoid valve B,AT-4 11 , "
SHIFT SOLENOID VALVE B".
oOverrun clutch solenoid valve,AT- 4 1 6 , "
OVERRUNCLUTCHSOLENOIDVALVE".
oTorque converter clutch solenoid valve,AT-421, "
TORQUE CONVERTER CLUTCH SOLENOID
VA LV E".
oBatt/fluid temp sen (A/T fluid temperature sensor and TCM power source),AT-426, "
BATT/FLUID
TEMP SEN (A/T FLUID TEMP SENSOR CIRCUIT AND TCM POWER SOURCE)".
oEngine speed signal,AT- 4 3 2 , "
ENGINE SPEED SIGNAL".
oLine pressure solenoid valve,AT-436, "
LINE PRESSURE SOLENOID VALVE".
oCAN communication line,AT-443, "
CAN CAMMUNICATION LINE".
oControl unit (RAM), control unit (ROM),AT- 2 2 6 , "
DTC CONTROL UNIT (RAM), CONTROL UNIT
(ROM)".
oControl unit (EEP ROM),AT- 2 2 8 , "
DTC CONTROL UNIT(EEPROM)".
oPNP & overdrive control switches, and throttle position sensor,AT- 3 8 2 , "
21. TCM Self-diagnosis
Does Not Activate (PNP & Overdrive Control Switches, and Throttle Position Sensor Circuit Checks)"
.
oBattery
oOthers

TROUBLE DIAGNOSIS — BASIC INSPECTION
AT-291
[EXC.F/EURO-OBD]
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5. Start engine and measure line pressure at idle and stall speed.
lWhen measuring line pressure at stall speed, follow the
stall test procedure.
Line pressure: Refer toAT-563, "
SERVICE DATA AND SPECIFI-
CATIONS (SDS)".
JUDGEMENT OF LINE PRESSURE TEST
Road TestECS004VU
DESCRIPTION
lThe purpose of the test is to determine overall performance of A/
T and analyze causes of problems.
lThe 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.
lOil pump wear
lControl piston damage
lPressure regulator valve or plug sticking
lSpring for pressure regulator valve damaged
lFluid pressure leakage between oil strainer and pressure regulator valve
lClogged strainer
Line pressure is low in particular posi-
tion.
lFluid pressure leakage between manual valve and particular clutch
lFor 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 “CLUTCH AND BAND CHART”,AT-19, "
CLUTCH AND BAND
CHART".
Line pressure is high.
lMaladjustment of throttle position sensor
lA/T fluid temperature sensor damaged
lLine pressure solenoid valve sticking
lShort circuit of line pressure solenoid valve circuit
lPressure modifier valve sticking
lPressure regulator valve or plug sticking
lOpen in dropping resistor circuit
At stall
speedLine pressure is low.
lMaladjustment of throttle position sensor
lLine pressure solenoid valve sticking
lShort circuit of line pressure solenoid valve circuit
lPressure regulator valve or plug sticking
lPressure modifier valve sticking
lPilot valve sticking
SAT786A