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![NISSAN X-TRAIL 2003 Electronic Repair Manual ON BOARD DIAGNOSTIC SYSTEM DESCRIPTION
AT-51
[EURO-OBD]
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TCM SELF-DIAGNOSTIC PROCEDURE (NO TOOLS)
1.CHECK O/D OFF INDICATOR LAMP
1. Start engine and warm it up to normal opera NISSAN X-TRAIL 2003 Electronic Repair Manual ON BOARD DIAGNOSTIC SYSTEM DESCRIPTION
AT-51
[EURO-OBD]
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TCM SELF-DIAGNOSTIC PROCEDURE (NO TOOLS)
1.CHECK O/D OFF INDICATOR LAMP
1. Start engine and warm it up to normal opera](/manual-img/5/57402/w960_57402-56.png)
ON BOARD DIAGNOSTIC SYSTEM DESCRIPTION
AT-51
[EURO-OBD]
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TCM SELF-DIAGNOSTIC PROCEDURE (NO TOOLS)
1.CHECK O/D OFF INDICATOR LAMP
1. Start engine and warm it up to normal operating temperature.
2. Turn ignition switch to “OFF” position.
Wait 5 seconds.
3. Turn ignition switch to “ACC” position.
4. Set overdrive control switch to “ON” position.
5. Move selector lever to “P” position.
6. Turn ignition switch to “ON” position. (Do not start engine.)
7. Does O/D OFF indicator lamp come on for about 2 seconds?
Ye s o r N o
Yes >>GOTO2
No >> Go toAT- 2 3 2 , "
1. O/D OFF Indicator Lamp Does Not Come On".
2.JUDGEMENT PROCEDURE STEP 1
1. Turn ignition switch to “OFF” position.
2. Turn ignition switch to “ACC” position.
3. Move selector lever to “D” position.
4. Set overdrive control switch to “OFF” position.
5. Turn ignition switch to “ON” position. (Do not start engine.)
–Wait more than 2 seconds after turning ignition switch “ON”.
>> GO TO 3
SAT774B
SCIA0693E
SAT653E
Page 58 of 3066
AT-52
[EURO-OBD]
ON BOARD DIAGNOSTIC SYSTEM DESCRIPTION
3.JUDGEMENT PROCEDURE STEP 2
1. Move selector lever to “2” position.
2. Set overdrive control switch to “ON” position.
>> GO TO 4
4.JUDGEMENT PROCEDURE STEP 3
1. Move selector lever to “1” position.
2. Set overdrive control switch to “OFF” position.
>> GO TO 5
5.JUDGEMENT PROCEDURE STEP 4
1. Depress accelerator pedal fully and release it.
>> GO TO 6
6.CHECK SELF-DIAGNOSIS CODE
Check O/D OFF indicator lamp. Refer toAT-53, "
JUDGEMENT OF
SELF-DIAGNOSIS CODE".
>>DIAGNOSIS END
SAT780B
SAT781B
SAT981F
SCIA0693E
Page 59 of 3066
![NISSAN X-TRAIL 2003 Electronic Repair Manual ON BOARD DIAGNOSTIC SYSTEM DESCRIPTION
AT-53
[EURO-OBD]
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JUDGEMENT OF SELF-DIAGNOSIS CODE
O/D OFF indicator lamp:
All judgement flickers are the same.
All circuits that can be NISSAN X-TRAIL 2003 Electronic Repair Manual ON BOARD DIAGNOSTIC SYSTEM DESCRIPTION
AT-53
[EURO-OBD]
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JUDGEMENT OF SELF-DIAGNOSIS CODE
O/D OFF indicator lamp:
All judgement flickers are the same.
All circuits that can be](/manual-img/5/57402/w960_57402-58.png)
ON BOARD DIAGNOSTIC SYSTEM DESCRIPTION
AT-53
[EURO-OBD]
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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 toAT- 1 4 2 , "
DTC P0720 VEHICLE SPEED SENSOR·A/T
(REVOLUTION SENSOR)"
2nd judgement flicker is longer than others.
Vehicle speed sensor circuit is short-circuited or disconnected.
Go to VEHICLE SPEED SENSOR·MTR.
EURO-OBD:AT-221, "
Component Inspection"
3rd judgement flicker is longer than others.
Throttle position sensor circuit is short-circuited or disconnected.
Go to DTC P1705 ACCELEPATOR PEDAL POSI-
TION(APP)SENSOR
Refer toAT- 2 0 3 , "
DTC P1705 ACCELERATOR PEDAL POSI-
TION (APP) SENSOR"
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 toAT-193, "
DTC P0750 SHIFT SOLENOID VALVE A"
5th 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 toAT- 1 9 8 , "
DTC P0755 SHIFT SOLENOID VALVE B"
SCIA0694ESCIA0695E
SCIA0696ESCIA0697E
SCIA0698ESCIA0699E
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![NISSAN X-TRAIL 2003 Electronic Repair Manual 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.
GotoDTCP1760OVERRUNCLU NISSAN X-TRAIL 2003 Electronic Repair Manual 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.
GotoDTCP1760OVERRUNCLU](/manual-img/5/57402/w960_57402-59.png)
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.
GotoDTCP1760OVERRUNCLUTCHSOLENOIDVALVE.
Refer toAT- 2 0 8 , "
DTC P1760 OVERRUN CLUTCH SOLENOID
VA LV E"
7th 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 toAT-181, "
DTC P0740 TORQUE CONVERTER CLUTCH
SOLENOID VALVE"
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 .
EURO-OBD:AT- 2 1 6 , "
DTC 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 DTC P0725 ENGINE SPEED SIGNAL.
Refer toAT-147, "
DTC P0725 ENGINE SPEED SIGNAL"
O/D OFF indicator lamp:
SCIA0700ESCIA0701E
SCIA0702ESCIA0703E
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AT-55
[EURO-OBD]
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t1= 2.5 seconds t2= 2.0 seconds t3= 1.0 second t4= 1.0 second 10th judgement flicker is longer than others.
Line press NISSAN X-TRAIL 2003 Electronic Repair Manual ON BOARD DIAGNOSTIC SYSTEM DESCRIPTION
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t1= 2.5 seconds t2= 2.0 seconds t3= 1.0 second t4= 1.0 second 10th judgement flicker is longer than others.
Line press](/manual-img/5/57402/w960_57402-60.png)
ON BOARD DIAGNOSTIC SYSTEM DESCRIPTION
AT-55
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t1= 2.5 seconds t2= 2.0 seconds t3= 1.0 second t4= 1.0 second 10th judgement flicker is longer than others.
Line pressure solenoid valve circuit is short-circuited or discon-
nected.
Go to DTC P0745 LINE PRESSURE SOLENOID VALVE.
Refer toAT-186, "
DTC P0745 LINE PRESSURE SOLENOID
VA LV E"
11th judgement flicker is longer than others.
The ECM-AT communication line is open or shorted.
Go to DTC U1000 CAN COMMNICATION LINE.
Refer toEC-114, "
DTC U1000 CAN COMMUNICATION 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 and
OVERDRIVE CONTROL switches).
Refer toAT-260, "
21. TCM Self-diagnosis Does Not Activate
(PNP & Overdrive 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 not a problem). O/D OFF indicator lamp:
SCIA0704ESCIA0705E
SCIA0706ESAT804H
Page 62 of 3066
![NISSAN X-TRAIL 2003 Electronic Repair Manual AT-56
[EURO-OBD]
TROUBLE DIAGNOSIS — INTRODUCTION
TROUBLE DIAGNOSIS — INTRODUCTION
PFP:00000
IntroductionECS0 04 QO
The TCM receives a signal from the vehicle speed sensor, throttle
position senso NISSAN X-TRAIL 2003 Electronic Repair Manual AT-56
[EURO-OBD]
TROUBLE DIAGNOSIS — INTRODUCTION
TROUBLE DIAGNOSIS — INTRODUCTION
PFP:00000
IntroductionECS0 04 QO
The TCM receives a signal from the vehicle speed sensor, throttle
position senso](/manual-img/5/57402/w960_57402-61.png)
AT-56
[EURO-OBD]
TROUBLE DIAGNOSIS — INTRODUCTION
TROUBLE DIAGNOSIS — INTRODUCTION
PFP:00000
IntroductionECS0 04 QO
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 toAT- 6 1 , "
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-57, "
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
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TROUBLE DIAGNOSIS — INTRODUCTION
AT-57
[EURO-OBD]
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DIAGNOSTIC WORKSHEET
Information from Customer
KEY POINTS
lWHAT..... Vehicle & A/T model
lWHEN..... Date, Frequencies
lWHERE..... Road conditions
lHOW..... Operating conditions, Symptoms
Customer name MR/MS Model & Year VIN
Trans. model Engine Mileage
Incident Date Manuf. Date In Service Date
FrequencyoContinuousoIntermittent ( times a day)
SymptomsoVehicle does not move. (oAny positionoParticular position)
oNo up-shift (o1st®2ndo2nd®3rdo3rd®O/D)
oNo down-shift (oO/D®3rdo3rd®2ndo2nd®1st)
oLockup malfunction
oShift point too high or too low.
oShift shock or slip (oN®DoLockupoAny drive position)
oNoise or vibration
oNo kickdown
oNo pattern select
oOthers
()
O/D OFF indicator lamp Blinks for about 8 seconds.
oContinuously litoNot lit
Malfunction indicator lamp (MIL)oContinuously litoNot lit
Page 64 of 3066
AT-58
[EURO-OBD]
TROUBLE DIAGNOSIS — INTRODUCTION
Diagnostic Worksheet
1.oRead the Fail-safe and listen to customer complaints.AT-57, "Infor-
mation from
Customer"
2.oCHECK A/T FLUIDAT-64, "A/T
Fluid Check"oLeakage (Follow specified procedure)
oFluid condition
oFluid level
3.oPerform STALL TEST and LINE PRESSURE TEST.AT-65, "
Stall
Te s t",AT- 6 8 ,
"Line Pres-
sure Test"
oStall test — Mark possible damaged components/others.
oTorque converter one-way clutch
oReverse clutch
oForward clutch
oOverrun clutch
oForward one-way clutchoLow & reverse brake
oLow one-way clutch
oEngine
oLine pressure is low
oClutches and brakes except high clutch and
brake band are OK
oLine Pressure test — Suspected parts: