NISSAN X-TRAIL 2003 Electronic Service Manual

TROUBLE DIAGNOSIS — INDEX
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[EURO-OBD]TROUBLE DIAGNOSIS — INDEXPFP:00000
Alphabetical & P No. Index for DTCECS003VK
ALPHABETICAL INDEX FOR DTC
Check if the vehicle is a model with Euro-OBD system or not by the “Type approval number” on the identifica-
tion plate. Refer toGI-45, "
IDENTIFICATION PLATE".
l*1: These numbers are prescribed by SAE J2012.
l*2: When the fail-safe operation occurs, the MIL illuminates.
l*3: The MIL illuminates when both the “Revolution sensor signal” and the “Vehicle speed sensor signal” meet the fail-safe condition at
thesametime.Type approval number Model
Available With Euro-OBD system
Not available (blank) Without Euro-OBD system
Items
(CONSULT-II screen terms)DTC
Reference page
CONSULT-II
GST*1
A/T 1ST GR FNCTN P0731AT- 1 5 1 , "
DTC P0731 A/T 1ST
GEAR FUNCTION"
A/T 2ND GR FNCTN P0732AT- 1 5 8 , "DTC P0732 A/T 2ND
GEAR FUNCTION"
A/T 3RD GR FNCTN P0733AT- 1 6 5 , "DTC P0733 A/T 3RD
GEAR FUNCTION"
A/T 4TH GR FNCTN P0734AT- 1 7 2 , "DTC P0734 A/T 4TH
GEAR FUNCTION"
ATF TEMP SEN/CIRC P0710AT- 1 3 6 , "
DTC P0710 A/T FLUID
TEMPERATURE SENSOR
CIRCUIT"
ENGINE SPEED SIG P0725AT- 1 4 7 , "DTC P0725 ENGINE
SPEED SIGNAL"
L/PRESS SOL/CIRC P0745AT-186, "
DTC P0745 LINE
PRESSURE SOLENOID
VA LV E"
O/R CLTCH SOL/CIRC P1760AT- 2 0 8 , "
DTC P1760 OVER-
RUN CLUTCH SOLENOID
VA LV E"
PNP SW/CIRC P0705AT-1 3 0 , "
DTC P0705 PARK/
NEUTRAL POSITION (PNP)
SWITCH"
SFT SOL A/CIRC*2 P0750AT- 1 9 3 , "DTC P0750 SHIFT
SOLENOID VALVE A"
SFT SOL B/CIRC*2 P0755AT- 1 9 8 , "DTC P0755 SHIFT
SOLENOID VALVE B"
TCC SOLENOID/CIRC P0740AT-181, "
DTC P0740 TORQUE
CONVERTER CLUTCH SOLE-
NOID VALVE"
TP SEN/CIRC A/T*2 P1705AT- 2 0 3 , "
DTC P1705 ACCEL-
ERATOR PEDAL POSITION
(APP) SENSOR"
VEH SPD SEN/CIR AT*3 P0720AT-142, "
DTC P0720 VEHICLE
SPEED SENSOR·A/T (REVO-
LUTION SENSOR)"
CAN COMM CIRCUIT U1000EC-114, "DTC U1000 CAN
COMMUNICATION LINE"

AT-36
[EURO-OBD]
TROUBLE DIAGNOSIS — INDEX
PNO.INDEXFORDTC
Check if the vehicle is a model with Euro-OBD system or not by the “Type approval number” on the identifica-
tion plate. Refer toGI-45, "
IDENTIFICATION PLATE".
l*1: These numbers are prescribed by SAE J2012.
l*2: When the fail-safe operation occurs, the MIL illuminates.
l*3: The MIL illuminates when both the “Revolution sensor signal” and the “Vehicle speed sensor signal” meet the fail-safe condition at
thesametime.Type approval number Model
Available With Euro-OBD system
Not available (blank) Without Euro-OBD system
DTC
Items
(CONSULT-II screen terms)Reference page
CONSULT-II
GST*1
P0705 PNP SW/CIRCAT- 1 3 0 , "
DTC P0705 PARK/
NEUTRAL POSITION (PNP)
SWITCH"
P0710 ATF TEMP SEN/CIRCAT-136, "
DTC P0710 A/T FLUID
TEMPERATURE SENSOR
CIRCUIT"
P0720 VEH SPD SEN/CIR AT*3AT- 1 4 2 , "
DTC P0720 VEHICLE
SPEED SENSOR·A/T (REVO-
LUTION SENSOR)"
P0725 ENGINE SPEED SIGAT- 1 4 7 , "DTC P0725 ENGINE
SPEED SIGNAL"
P0731 A/T 1ST GR FNCTNAT- 1 5 1 , "DTC P0731 A/T 1ST
GEAR FUNCTION"
P0732 A/T 2ND GR FNCTNAT- 1 5 8 , "DTC P0732 A/T 2ND
GEAR FUNCTION"
P0733 A/T 3RD GR FNCTNAT- 1 6 5 , "DTC P0733 A/T 3RD
GEAR FUNCTION"
P0734 A/T 4TH GR FNCTNAT- 1 7 2 , "DTC P0734 A/T 4TH
GEAR FUNCTION"
P0740 TCC SOLENOID/CIRCAT- 1 8 1 , "
DTC P0740 TORQUE
CONVERTER CLUTCH SOLE-
NOID VALVE"
P0745 L/PRESS SOL/CIRCAT-186, "
DTC P0745 LINE
PRESSURE SOLENOID
VA LV E"
P0750 SFT SOL A/CIRC*2AT-193, "DTC P0750 SHIFT
SOLENOID VALVE A"
P0755 SFT SOL B/CIRC*2AT-198, "DTC P0755 SHIFT
SOLENOID VALVE B"
P1705 TP SEN/CIRC A/T*2AT- 2 0 3 , "
DTC P1705 ACCEL-
ERATOR PEDAL POSITION
(APP) SENSOR"
P1760 O/R CLTCH SOL/CIRCAT-208, "
DTC P1760 OVER-
RUNCLUTCHSOLENOID
VA LV E"
U1000 CAN COMM CIRCUITEC-114, "DTC U1000 CAN
COMMUNICATION LINE"

ON BOARD DIAGNOSTIC SYSTEM DESCRIPTION
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ON BOARD DIAGNOSTIC SYSTEM DESCRIPTIONPFP:00000
IntroductionECS004QH
The A/T system has two self-diagnostic systems.
The first is the emission-related on board diagnostic system (EURO-OBD) performed by the TCM in combina-
tion with the ECM. The malfunction is indicated by the MIL (malfunction indicator lamp) and is stored as a DTC
in the ECM memory but not the TCM memory.
The second is the TCM original self-diagnosis indicated by the O/D OFF indicator lamp. The malfunction is
stored in the TCM memory. The detected items are overlapped with EURO-OBD self-diagnostic items. For
detail, refer toAT - 4 2 , "
SELF-DIAGNOSTIC RESULT TEST MODE".
EURO-OBD Function for A/T SystemECS004QI
The ECM provides emission-related on board diagnostic (EURO-OBD) functions for the A/T system. One
function is to receive a signal from the TCM used with EURO-OBD-related parts of the A/T system. The signal
is sent to the ECM when a malfunction occurs in the corresponding EURO-OBD-related part. The other func-
tion is to indicate a diagnostic result by means of the MIL (malfunction indicator lamp) on the instrument panel.
Sensors, switches and solenoid valves are used as sensing elements.
The MIL automatically illuminates in One or Two Trip Detection Logic when a malfunction is sensed in relation
to A/T system parts.
One or Two Trip Detection Logic of EURO-OBDECS0 04 QJ
ONETRIPDETECTIONLOGIC
If a malfunction is sensed during the first test drive, the MIL will illuminate and the malfunction will be stored in
the ECM memory as a DTC. The TCM is not provided with such a memory function.
TWO TRIP DETECTION LOGIC
When a malfunction is sensed during the first test drive, it is stored in the ECM memory as a 1st trip DTC
(diagnostic trouble code) or 1st trip freeze frame data. At this point, the MIL will not illuminate. — First Trip
If the same malfunction as that experienced during the first test drive is sensed during the second test drive,
the MIL will illuminate. — Second Trip
A/T-related parts for which the MIL illuminates during the first or second test drive are listed below.
The “trip” in the “One or Two Trip Detection Logic” means a driving mode in which self-diagnosis is performed
during vehicle operation.
EURO-OBD Diagnostic Trouble Code (DTC)ECS004QK
HOW TO READ DTC AND 1ST TRIP DTC
DTC and 1st trip DTC can be read by the following methods.
(withCONSULT-IIor GST)CONSULT-II or GST (Generic Scan Tool) Examples: P0705, P0710,
P0720, P0725, etc.
These DTCs are prescribed by SAE J2012.
(CONSULT-II also displays the malfunctioning component or system.)
l1st trip DTC No. is the same as DTC No.
lOutput of the diagnostic trouble code indicates that the indicated circuit has a malfunction. How-
ever, in case of the Mode II and GST they do not indicate whether the malfunction is still occurring
or occurred in the past and returned to normal.
CONSULT-II can identify them as shown below. Therefore, using CONSULT-II (if available) is rec-
ommended.
ItemsMIL
One trip detection Two trip detection
Shift solenoid valve A — DTC: P0750 X
Shift solenoid valve B — DTC: P0755 X
Throttle position sensor — DTC: P1705 X
Except aboveX

AT-38
[EURO-OBD]
ON BOARD DIAGNOSTIC SYSTEM DESCRIPTION
A sample of CONSULT-II display for DTC is shown in the following
page. DTC or 1st trip DTC of a malfunction is displayed in SELF
DIAGNOSIS mode for “ENGINE” with CONSULT-II. Time data indi-
cates how many times the vehicle was driven after the last detection
of a DTC.
If the DTC is being detected currently, the time data will be “0”.
If a 1st trip DTC is stored in the ECM, the time data will be “1t”.
Freeze Frame Data and 1st Trip Freeze Frame Data
The ECM has a memory function, which stores the driving condition such as fuel system status, calculated
load value, engine coolant temperature, short term fuel trim, long term fuel trim, engine speed and vehicle
speed at the moment the ECM detects a malfunction.
Data which are stored in the ECM memory, along with the 1st trip DTC, are called 1st trip freeze frame data,
and the data, stored together with the DTC data, are called freeze frame data and displayed on CONSULT-II
or GST. The 1st trip freeze frame data can only be displayed on the CONSULT-II screen, not on the GST. For
detail, refer to " ", “CONSULT-II”.
Only one set of freeze frame data (either 1st trip freeze frame data of freeze frame data) can be stored in the
ECM. 1st trip freeze frame data is stored in the ECM memory along with the 1st trip DTC. There is no priority
for 1st trip freeze frame data and it is updated each time a different 1st trip DTC is detected. However, once
freeze frame data (2nd trip detection/MIL on) is stored in the ECM memory, 1st trip freeze frame data is no
longer stored. Remember, only one set of freeze frame data can be stored in the ECM.
The ECM has the following priorities to update the data.
Both 1st trip freeze frame data and freeze frame data (along with the DTCs) are cleared when the ECM mem-
oryiserased.
SAT014K
SAT015K
SAT016K
Priority Items
1 Freeze frame data Misfire — DTC: P0300 - P0306
Fuel Injection System Function — DTC: P0171, P0172, P0174, P0175
2 Except the above items (Includes A/T related items)
3 1st trip freeze frame data

ON BOARD DIAGNOSTIC SYSTEM DESCRIPTION
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HOW TO ERASE DTC
The diagnostic trouble code can be erased by CONSULT-II, GST or ECM DIAGNOSTIC TEST MODE as
described following.
lIf the battery terminal is disconnected, the diagnostic trouble code will be lost within 24 hours.
lWhen you erase the DTC, using CONSULT-II or GST is easier and quicker than switching the mode
selector on the ECM.
The following emission-related diagnostic information is cleared from the ECM memory when erasing DTC
related to EURO-OBD. For details, refer toEC-46, "
HOW TO ERASE EMISSION-RELATED DIAGNOSTIC
INFORMATION".
lDiagnostic trouble codes (DTC)
l1st trip diagnostic trouble codes (1st trip DTC)
lFreeze frame data
l1st trip freeze frame data
lSystem readiness test (SRT) codes
lTest values
HOW TO ERASE DTC (WITH CONSULT-II)
lIf a DTC is displayed for both ECM and TCM, it needs to be erased for both ECM and TCM.
1. If the ignition switch stays “ON” after repair work, be sure to turn ignition switch “OFF” once. Wait at least
5 seconds and then turn it “ON” (engine stopped) again.
2. Turn CONSULT-II “ON” and touch “A/T”.
3. Touch “SELF DIAGNOSIS”.
4. Touch “ERASE”. (The DTC in the TCM will be erased.) Then touch “BACK” twice.
5. Touch “ENGINE”.
6. Touch “SELF DIAGNOSIS”.

AT-40
[EURO-OBD]
ON BOARD DIAGNOSTIC SYSTEM DESCRIPTION
7. Touch “ERASE”. (The DTC in the ECM will be erased.)
HOW TO ERASE DTC (WITH GST)
1. If the ignition switch stays “ON” after repair work, be sure to turn ignition switch “OFF” once. Wait at least
5 seconds and then turn it “ON” (engine stopped) again.
2. Perform “EURO-OBD SELF-DIAGNOSTIC PROCEDURE (No Tools)”. Refer toAT - 5 1 , "
TCM SELF-DIAG-
NOSTIC PROCEDURE (NO TOOLS)". (The engine warm-up step can be skipped when performing the
diagnosis only to erase the DTC.)
3. Select Mode 4 with Generic Scan Tool (GST). For details, refer toEC-96, "
Generic Scan Tool (GST) Func-
tion", “Generic Scan Tool (GST)”.
HOW TO ERASE DTC (NO TOOLS)
1. If the ignition switch stays “ON” after repair work, be sure to turn ignition switch “OFF” once. Wait at least
5 seconds and then turn it “ON” (engine stopped) again.
2. Perform “TCM SELF-DIAGNOSTIC PROCEDURE (No Tools)”. Refer toAT-51, "
TCM SELF-DIAGNOS-
TIC PROCEDURE (NO TOOLS)". (The engine warm-up step can be skipped when performing the diag-
nosis only to erase the DTC.)
SAT017K

ON BOARD DIAGNOSTIC SYSTEM DESCRIPTION
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Malfunction Indicator lamp (MIL)ECS004QL
1. The malfunction indicator lamp will light up when the ignition
switch is turned ON without the engine running. This is for
checking the lamp.
lIf the malfunction indicator does not light up, refer to "",
“Warning Lamps”.
(Or see MIL & CONSULT-II in EC section. Refer toEC-48,
"Malfunction Indicator (MI)", “Description”, “Malfunction Indi-
cator lamp (MIL)” and "", “CONSULT-II”.)
2. When the engine is started, the malfunction indicator should go
off.
If the lamp remains on, the on board diagnostic system has
detected an emission-related (EURO-OBD) malfunction. For
detail, refer to "njec0029", “ON BOARD DIAGNOSTIC SYSTEM DESCRIPTION”.
CONSULT-IIECS0 04 QM
After performing “SELF-DIAGNOSTIC PROCEDURE (WITH CONSULT-II)”AT- 4 1 , "SELF-DIAGNOSTIC
PROCEDURE (WITH CONSULT-II)", place check marks for results on the “DIAGNOSTIC WORKSHEET”,
AT- 5 7 , "
DIAGNOSTIC WORKSHEET". Reference pages are provided following the items.
NOTICE:
1. The CONSULT-II electrically displays shift timing and lock-up timing (that is, operation timing of each sole-
noid).
Check for time difference between actual shift timing and the CONSULT-II display. If the difference is
noticeable, mechanical parts (except solenoids, sensors, etc.) may be malfunctioning. Check mechanical
parts using applicable diagnostic procedures.
2. Shift schedule (which implies gear position) displayed on CONSULT-II and that indicated in Service Man-
ual may differ slightly. This occurs because of the following reasons:
–Actual shift schedule has more or less tolerance or allowance,
–Shift schedule indicated in Service Manual refers to the point where shifts start, and
–Gear position displayed on CONSULT-II indicates the point where shifts are completed.
3. Shift solenoid valve “A” or “B” is displayed on CONSULT-II at the start of shifting. Gear position is dis-
played upon completion of shifting (which is computed by TCM).
4. Additional CONSULT-II information can be found in the Operation Manual supplied with the CONSULT-II
unit.
SELF-DIAGNOSTIC PROCEDURE (WITH CONSULT-II)
1. Turn on CONSULT-II and touch “ENGINE” for EURO-OBD
detected items or touch “A/T” for TCM self-diagnosis.
If A/T is not displayed, check TCM power supply and ground cir-
cuit. Refer toAT - 1 2 5 , "
TCM Terminals and Reference Value".If
result is NG, refer toPG-2, "
POWER SUPPLY ROUTING".
SAT652J
SAT014K

AT-42
[EURO-OBD]
ON BOARD DIAGNOSTIC SYSTEM DESCRIPTION
2. Touch “SELF DIAGNOSIS”.
Display shows malfunction experienced since the last erasing
operation.
CONSULT-II performs “real time diagnosis”.
Also, any malfunction detected while in this mode will be dis-
played at real time.
SELF-DIAGNOSTIC RESULT TEST MODE
SAT987J
Detected items
(Screen terms for CONSULT-II, “SELF
DIAGNOSIS” test mode)
Malfunction is detected when ...TCM self-diagnosis EURO-OBD (DTC)
Available by O/D OFF
indicator lamp or “A/T”
on CONSULT-IIAvailable by malfunc-
tion indicator*2,
“ENGINE” on CON-
SULT-II or GST “A/T” “ENGINE”
Park/neutral position (PNP) switch circuit
lTCM does not receive the correct
voltage signal (based on the gear
position) from the switch.— P0705
—PNP SW/CIRC
Revolution sensor
lTCM does not receive the proper
voltage signal from the sensor.
X P0720
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—
A/T 1st gear function
lA/T cannot be shifted to the 1st
gear position even if electrical cir-
cuit is good.— P0731*1
—A/T 1ST GR FNCTN
A/T 2nd gear function
lA/T cannot be shifted to the 2nd
gear position even if electrical cir-
cuit is good.— P0732*1
—A/T 2ND GR FNCTN
A/T 3rd gear function
lA/T cannot be shifted to the 3rd
gear position even if electrical cir-
cuit is good.— P0733*1
—A/T 3RD GR FNCTN
A/T 4th gear function
lA/T cannot be shifted to the 4th
gear position even if electrical cir-
cuit is good.— P0734*1
—A/T 4TH GR FNCTN
Shift solenoid valve A
lTCM detects an improper voltage
drop when it tries to operate the
solenoid valve.X P0750
SHIFT SOLENOID/V
ASFT SOL A/CIRC
Shift solenoid valve B
lTCM detects an improper voltage
drop when it tries to operate the
solenoid valve.X P0755
SHIFT SOLENOID/V
BSFT SOL B/CIRC
Overrun clutch solenoid valve
lTCM detects an improper voltage
drop when it tries to operate the
solenoid valve.X P1760
OVERRUN CLUTCH
S/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 P0740
T/CCLUTCHSOL/V TCCSOLENOID/
CIRC

ON BOARD DIAGNOSTIC SYSTEM DESCRIPTION
AT-43
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X: Applicable
—: Not applicable
*1: These malfunctions cannot be displayed by MIL if another malfunction is assigned to lamp MIL.
*2: Refer toEC-48, "
Malfunction Indicator (MI)", “Malfunction Indicator lamp (MIL)”.
*3: A/T COMM LINE means CAN COMM LINE in this model.Line pressure solenoid valve
lTCM detects an improper voltage
drop when it tries to operate the
solenoid valve.X P0745
LINE PRESSURE S/
VL/PRESS SOL/CIRC
Throttle position sensor (Accelerator Pedal
Position (APP) sensor)
lTCM receives an excessively low
or high voltage from the sensor.
X P1705
THROTTLE POSI
SENTP SEN/CIRC A/T
Engine speed signal
lTCM does not receive the proper
voltage signal from the ECM.X P0725
ENGINE SPEED SIG
A/T fluid temperature sensor
lTCM receives an excessively low
or high voltage from the sensor.
X P0710
BATT/FLUID TEMP
SENATF TEMP SEN/
CIRC
Engine control
lThe ECM-A/T communication line
is open or shorted.X U1000
A/T COMM LINE
*3—
TCM (RAM)
lTCM memory (RAM) is malfunc-
tioning.
——
CONTROL UNIT
(RAM)—
TCM (ROM)
lTCM memory (ROM) is malfunc-
tioning.
——
CONTROL UNIT
(ROM)—
TCM (EEP ROM)
lTCM memory (EEP ROM) is mal-
functioning.
——
CONT UNIT (EEP
ROM)—
Initial start
lThis 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.
XX Detected items
(Screen terms for CONSULT-II, “SELF
DIAGNOSIS” test mode)
Malfunction is detected when ...TCM self-diagnosis EURO-OBD (DTC)
Available by O/D OFF
indicatorlampor“A/T”
on CONSULT-IIAvailable by malfunc-
tion indicator*2,
“ENGINE” on CON-
SULT-II or GST “A/T” “ENGINE”

AT-44
[EURO-OBD]
ON BOARD DIAGNOSTIC SYSTEM DESCRIPTION
DATA MONITOR MODE (A/T)
Item DisplayMovertocenterMonitoritems
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.This sensor means
accelerator pedal posi-
tion(app)sensor.
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.
Overdrive control
switchOVERDRIVE
SW
[ON/OFF]X——
lON/OFF state com-
puted from signal of
overdrive control SW is
displayed.
PN position (PNP)
switchPN POSI SW
[ON/OFF]
X——
lON/OFF state com-
puted from signal of PN
position SW is dis-
played.
R position switch R POSITION SW
[ON/OFF]
X——
lON/OFF state com-
puted from signal of R
position SW is dis-
played.
D position switch D POSITION SW
[ON/OFF]
X——
lON/OFF state com-
puted from signal of D
position SW is dis-
played.
2 position switch 2 POSITION SW
[ON/OFF]
X——
lON/OFF status, com-
puted from signal of 2
position SW, is dis-
played.