engine NISSAN X-TRAIL 2003 Electronic Repair Manual

TROUBLE DIAGNOSES FOR SYMPTOMS
AT-263
[EURO-OBD]
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4.CHECK OVERDRIVE CONTROL SWITCH CIRCUIT (WITHOUT CONSULT-II)
Without CONSULT-II
1. Turn ignition switch to “ON” position.
(Do not start engine.)
2. Check voltage between TCM terminal 22 and ground when overdrive control switch is “ON” and “OFF”.
OK or NG
OK >> GOTO6
NG >> Check the following items:
lOverdrive control switch (Refer to “Component Inspection”,AT-265, "COMPONENT INSPEC-
TION".)
lHarness for short or open between TCM and overdrive control switch (Main harness)
lHarness of ground circuit for overdrive control switch (Main harness) for short or open Vo l ta g e :
Switch position “ON” :
Battery voltage
Switch position “OFF” :
1V or less
SCIA0778E

AT-264
[EURO-OBD]
TROUBLE DIAGNOSES FOR SYMPTOMS
5.CHECK THROTTLE POSITION SENSOR* CIRCUIT (WITH CONSULT-II)
*:This sensor meaus accelerator pedal position (app) sensor.
With CONSULT-II
1. Refer to "SELF-DIAGNOSTIC PROCEDURE (With CONSULT-II)",AT-273, "
Diagnostic Procedure Without
CONSULT-II".—Except for Euro-OBD/Refer to "TCM SELF-DIAGNOSTIC PROCEDURE (With CON-
SULT-II)",AT - 5 1 , "
TCM SELF-DIAGNOSTIC PROCEDURE (NO TOOLS)"—Euro-OBD
2. Turn ignition switch to "ON" position.
(Do not start engine.)
3. Select "TCM INPUT SIGNALS" in "DATA MONITOR "mode for "A/T with CONSULT-II.
4. Read out "THRTL POS SEN" sensor" depressing and releasing acclerator pedal.
Check the signal of throttle position sensor is indicated properly.
OK or NG
OK >> GOTO7
NG >> Check the following items:
lThrottle position sensor — Refer to “Component Inspection”,AT-453, "Installation".
lHarness for short or open between ignition switch and throttle position sensor (Main harness)
lHarness for short or open between throttle position sensor and TCM (Main harness)
SAT014K
SAT614J

TROUBLE DIAGNOSES FOR SYMPTOMS
AT-265
[EURO-OBD]
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6.CHECK THROTTLE POSITION SENSOR CIRCUIT (WITHOUT CONSULT-II)
Without CONSULT-II
1. Pefer to "SELF-DIAGNOSTIC PROCEDURE (Without CONSULT-II)",AT-273, "
Diagnostic Procedure
Without CONSULT-II"—Except for Euro-OBD/Refer to "TCM SELF-DIAGNOSTIC PROCEDURE (NO
TOOLS)",AT-51, "
TCM SELF-DIAGNOSTIC PROCEDURE (NO TOOLS)"—Euro-OBD
2. Turn ignition switch to "ON" position.
(Do not start engine.)
3. Check voltage between TCM terminals 41 and ground while
depressing, and releasing accelerator pedal slowly. (After warm-
ingupengine)
OK or NG
OK >> GOTO7
NG >> Check the following items:
lThrottle position sensor — Refer to “Component Inspection”,AT-265, "COMPONENT INSPEC-
TION".
lHarness for short or open between ignition switch and throttle position sensor (Main harness)
lHarness for short or open between throttle position sensor and TCM (Main harness)
7.CHECK DTC
Perform “DIAGNOSTIC PROCEDURE”,AT-261, "
DIAGNOSTIC PROCEDURE".
OK or NG
OK >>INSPECTION END
NG >>
lPerform TCM input/output signal inspection.
lIf NG, recheck TCM pin terminals for damage or loose connection with harness connector.
COMPONENT INSPECTION
Overdrive Control Switch
lCheck continuity between two terminals 7 and 8.
SCIA0710E
Switch position Continuity
ON No
OFF Yes
SCIA0779E

AT-268
[EXC.F/EURO-OBD]
ON BOARD DIAGNOSTIC SYSTEM DESCRIPTION
SELF-DIAGNOSTIC RESULT TEST MODE
Detected items
(Screen terms for CONSULT-II, “SELF
DIAGNOSIS” test mode)
Malfunction is detected when ...TCM self-diagnosis
Remarks Available by O/D OFF
indicatorlampor“A/T”
on CONSULT-II “A/T” “ENGINE”
Revolution sensor
lTCM does not receive the proper
voltage signal from the sensor.X—
VHCL SPEED SEN·A/TVEH SPD SEN/
CIR AT
Vehicle speed sensor (Meter)
lTCM does not receive the proper
voltage signal from the sensor.X—
VHCL SPEED
SEN·MTR—
Shift solenoid valve A
lTCM detects an improper voltage
drop when it tries to operate the
solenoid valve.X
SHIFT SOLENOID/V A SFT SOL A/CIRC
Shift solenoid valve B
lTCM detects an improper voltage
drop when it tries to operate the
solenoid valve.X
SHIFT SOLENOID/V B SFT SOL B/CIRC
Overrun clutch solenoid valve
lTCM detects an improper voltage
drop when it tries to operate the
solenoid valve.X
OVERRUNCLUTCHS/
VO/R CLUCH SOL/
CIRC
T/C clutch solenoid valve
lTCM detects an improper voltage
drop when it tries to operate the
solenoid valve.X
T/C CLUTCH SOL/VTCC SOLENOID/
CIRC
Line pressure solenoid valve
lTCM detects an improper voltage
drop when it tries to operate the
solenoid valve.X
LINE PRESSURE S/VL/PRESS SOL/
CIRC
Throttlepositionsensor
(Accelerator Pedal Position (APP) sensor)
lTCM receives an excessively low
or high voltage from the sensor.X
THROTTLE POSI SEN TP SEN/CIRC A/T
Engine speed signal
lTCM does not receive the proper
voltage signal from the ECM.X
ENGINE SPEED SIG
A/T fluid temperature sensor
lTCM receives an excessively low
or high voltage from the sensor.XTo be displayed in
case of abnormality
andwhennorecord-
ing is made. BATT/FLUID TEMP
SENATF TEMP SEN/
CIRC
Engine control
lThe ECM-A/T communication line
is open or shorted.X
A/T COMM LINE
*1—
TCM (RAM)
lTCM memory (RAM) is malfunc-
tioning— Refer toAT - 3 9 0CONTROL UNIT
(RAM)—
TCM (ROM)
lTCM memory (ROM) is malfunc-
tioning—RefertoAT- 3 9 0CONTROL UNIT
(ROM)—
TCM (EEP ROM)
lTCM memory (EEP ROM) is mal-
functioning.—RefertoAT- 2 2 7CONT UNIT(EEP
ROM)—

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.

ON BOARD DIAGNOSTIC SYSTEM DESCRIPTION
AT-271
[EXC.F/EURO-OBD]
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ATTorque converter
slip ratioTC SLIP
RATIO
[0.000]———
lRatio of engine revolu-
tion to input shaft revo-
lution of torque
converter
Torque converter
slip speedTC SLIP
SPEED
[rpm]———Difference in revolution
between input shaft revo-
lution and input shaft rev-
olution of torque
converterDisplay doesn't indicate
orpm even if engine is
stopped.
But this isn't malfunc-
tion.
can communica-
tionCAN COMM
[OK/UNKWN]—X—
can circuit 1CANCIRC1
[OK/UNKWN]—X—
can circuit 2CANCIRC2
[OK/UNKWN]—X—
can circuit 3CANCIRC3
[OK/UNKWN]—X—
can circuit 4CANCIRC4
[OK/UNKWN]—X—
can circuit 5CANCIRC5
[OK/UNKWN]—X—
Throttle position THROTTLE
POSI
[/8]—— X
lThrottle position data,
used for computation
by TCM, is displayed.lA specific value used
for control is displayed
if fail-safe is activated
due to error.
Stop lamp switch BRAKE SW
[ON/OFF]
X——
lON/OFF status is dis-
played.
ON ... Brake pedal is
depressed.
OFF ... Brake pedal is
released.
Line pressure duty LINE PRES DTY
[%]
—— X
lControl value of line
pressure solenoid
valve, computed by
TCM from each input
signal, is displayed.
Torque converter
clutch solenoid
valve dutyTCC S/V DUTY
[%]
—— X
lControl value of torque
converter clutch sole-
noid valve, computed
by TCM from each
input signal, is dis-
played. Item Displaymove to centor Monitor items
Description Remarks
TCM
Input
signalsCAN
comm
sig-
nalsMain
signalsSelection
from
menu

ON BOARD DIAGNOSTIC SYSTEM DESCRIPTION
AT-273
[EXC.F/EURO-OBD]
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3. Touch “SELF-DIAG RESULTS”.
4. Touch “ERASE”. (The self-diagnostic results will be erased.)
Diagnostic Procedure Without CONSULT-IIECS004NX
SELF-DIAGNOSTIC PROCEDURE (WITHOUT CONSULT-II)
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-354, "
1. O/D OFF Indicator Lamp Does Not
Come On".
SAT971J
SAT970J
SAT774B
SCIA0693E

AT-274
[EXC.F/EURO-OBD]
ON BOARD DIAGNOSTIC SYSTEM DESCRIPTION
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
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
SAT653E
SAT780B
SAT781B

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

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