width NISSAN X-TRAIL 2003 Electronic Repair Manual

AT-46
[EURO-OBD]
ON BOARD DIAGNOSTIC SYSTEM DESCRIPTION
X: Applicable —: Not applicable : OptionThrottle 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.
Shift solenoid
valve ASHIFT S/V A
[ON/OFF]
—— X
lControl value of shift
solenoid valve A, com-
puted by TCM from
each input signal, is
displayed.Control value of sole-
noid is displayed even if
solenoid circuit is dis-
connected.
The OFF signal is dis-
played if solenoid circuit
is shorted. Shift solenoid
valve BSHIFT S/V B
[ON/OFF]
—— X
lControl value of shift
solenoid valve B, com-
puted by TCM from
each input signal, is
displayed.
Overrun clutch
solenoid valveOVERRUN/C S/
V
[ON/OFF]
—— X
lControl value of over-
run clutch solenoid
valve computed by
TCM from each input
signal is displayed.
Self-diagnosis dis-
play lamp
(O/D OFF indica-
tor lamp)SELF-D DP LMP
[ON/OFF]
—— X
lControl status of O/D
OFF indicator lamp is
displayed.
Voltage [V] — — — Value measured by voltage probe is displayed.
Frequency [Hz] — — —Value measured by pulse probe is displayed. If mea-
surement is impossible, "#" sign is displayed. "#"
sign is also displayed at the final data value until the
measurement result is obtained.
DUTY-HI — — —
Duty cycle value for measurement probe is dis-
played.
DUTY-LOW — — —
PLS WIDTH-HI — — —
Measured pulse width of measurement probe is dis-
played.
PLS WIDTH-LOW — — —Item DisplayMovertocenterMonitoritems
Description Remarks TCM
Input
signalsCAN
comm
sig-
nalsMain
signalsSelection
from
menu

AT-272
[EXC.F/EURO-OBD]
ON BOARD DIAGNOSTIC SYSTEM DESCRIPTION
X: Applicable —: Not applicable : Option
HOW TO ERASE SELF-DIAGNOSTIC RESULTS (WITH 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. Turn CONSULT-II “ON”, and touch “A/T”.
Shift solenoid
valve ASHIFT S/V A
[ON/OFF]
—— XlControl value of shift
solenoid valve A, com-
puted by TCM from
each input signal, is
displayed.Control value of sole-
noid is displayed even if
solenoid circuit is dis-
connected.
The OFF signal is dis-
played if solenoid circuit
is shorted. Shift solenoid
valve BSHIFT S/V B
[ON/OFF]
—— X
lControl value of shift
solenoid valve B, com-
puted by TCM from
each input signal, is
displayed.
Overrun clutch
solenoid valveOVERRUN/C S/
V
[ON/OFF]
—— X
lControl value of over-
run clutch solenoid
valve computed by
TCM from each input
signal is displayed.
Self-diagnosis dis-
play lamp
(O/D OFF indica-
tor lamp)SELF-D DP LMP
[ON/OFF]
—— X
lControl status of O/D
OFF indicator lamp is
displayed.
Voltage [V] — — — Value measured by voltage probe is displayed.
Frequency [Hz] — — —Value measured by pulse probe is displayed. If mea-
surement is impossible, "#" sign is displayed. "#"
sign is also displayed at the final data value until the
measurement result is obtained.
DUTY-HI — — —
Duty cycle value for measurement probe is dis-
played.
DUTY-LOW — — —
PLS WIDTH-HI — — —
Measured pulse width of measurement probe is dis-
played.
PLS WIDTH-LOW — — —Item Displaymove to centor Monitor items
Description Remarks
TCM
Input
signalsCAN
comm
sig-
nalsMain
signalsSelection
from
menu
SAT014K

REPAIR FOR COMPONENT PARTS
AT-501
[ALL]
D
E
F
G
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MA
B
AT
1-2 Accumulator Valve
lInstall 1-2 accumulator valve. Align 1-2 accumulator retainer
plate from opposite side of control valve body.
lInstall return spring, 1-2 accumulator piston and plug.
1. Install retainer plates.
lWhile pushing plug or return spring, install retainer plate.
Retainer Plate (Upper Body)
Unit: mm (in)
lInstall proper retainer plates.
Refer toAT- 4 9 8 , "
Control Valve Upper Body".
SAT142D
SAT143D
No. Name of control valve Width A Length B
22 Pilot valve
6.0 (0.236)21.5 (0.846) 30 1st reducing valve
34 3-2 timing valve
17 Torque converter relief valve
9 1-2 accumulator valve
40.5 (1.59)
25 1-2 accumulator piston valve
21 Overrunclutchreducingvalve
24.0 (0.945)
5 Cooler check valve
14 Torque converter clutch control valve 28.0 (1.102)
SAT086F

REPAIR FOR COMPONENT PARTS
AT-503
[ALL]
D
E
F
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B
AT
DISASSEMBLY
lRemove valves at retainer plate.
For removal procedures, refer to “DISASSEMBLY”,AT-498,
"Control Valve Upper Body".
INSPECTION
Valve Springs
lCheck each valve spring for damage or deformation. Also mea-
sure free length and outer diameter.
lReplace valve springs if deformed or fatigued.
Control Valves
lCheck sliding surfaces of control valves, sleeves and plugs for damage.
ASSEMBLY
lInstall control valves.
For installation procedures, refer to “ASSEMBLY”,AT-498,
"Control Valve Upper Body".
Retiner Plate (Lower Body)
Unit: mm (in)
lInstall proper retainer plates.
Refer toAT- 5 0 2 , "
Control Valve Lower Body".
SAT550G
Inspection standard :Refer toAT- 5 6 3 , "SERVICE DATA
AND SPECIFICATIONS (SDS)".
SAT138D
SAT550A
No. Name of control valve and plug Width A Length B Type
19 Pressure regulator valve
6.0
(0.236)28.0
(1.102)I 27 Accumulator control valve
30 Shift valve A
23 Overrun clutch control valve
2 Pressure modifier valve
35 Shuttle valve
9 Shift valve B — — II
SAT089F

AT-568
[ALL]
SERVICE DATA AND SPECIFICATIONS (SDS)
Input Shaft
ECS0 04 MR
SEAL RING CLEARANCE
SEAL RING
*: Always check with the Parts Department for the latest parts information.
Reduction Pinion GearECS004MS
TURNING TORQUE
REDUCTION PINION GEAR BEARING ADJUSTING SHIMS
Input shaft seal ring clearance mm
(in)Standard 0.08 - 0.23 (0.0031 - 0.0091)
Allowable limit 0.23 (0.0091)
Outer diameter mm (in) 1n ner diameter mm (in) width mm (in) Part number*
26 (1.024) 22.4 (0.882) 1.97 (0.078) 31525 80X02
Turning torque of reduction pinion gear N-m (kg-cm, in-lb) 0.05 - 0.39 (0.5 - 4.0, 0.43 - 3.47)
NO. Thickness mm (in) Part number NO. Thickness mm (in) Part number*
1 5.00 (0.1969) 31439-81X00 33 5.64 (0.2220) 31439-81X63
2 5.02 (0.1976) 31439-81X01 34 5.66 (0.2228) 31439-81X64
3 5.04 (0.1984) 31439-81X02 35 5.68 (0.2236) 31439-81X65
4 5.06 (0.1992) 31439-81X03 36 5.70 (0.2244) 31439-81X66
5 5.08 (0.2000) 31439-81X04 37 5.72 (0.2252) 31439-81X67
6 5.10 (0.2008) 31439-81X05 38 5.74 (0.2260) 31439-81X68
7 5.12 (0.2016) 31439-81X06 39 5.76 (0.2268) 31439-81X69
8 5.14 (0.2024) 31439-81X07 40 5.78 (0.2276) 31439-81X70
9 5.16 (0.2031) 31439-81X08 41 5.80 (0.2283) 31439-81X71
10 5.18 (0.2039) 31439-81X09 42 5.82 (0.2291) 31439-81X72
11 5.20 (0.2047) 31439-81X10 43 5.84 (0.2299) 31439-81X73
12 5.22 (0.2055) 31439-81X11 44 5.86 (0.2307) 31439-81X74
13 5.24 (0.2063) 31439-81X12 45 4.60 (0.1811) 31439-85X01
14 5.26 (0.2071) 31439-81X13 46 4.62 (0.1819) 31439-85X02
15 5.28 (0.2079) 31439-81X14 47 4.64 (0.1827) 31439-85X03
16 5.30 (0.2087) 31439-81X15 48 4.66 (0.1835) 31439-85X04
17 5.32 (0.2094) 31439-81X16 49 4.68 (0.1843) 31439 85X05
18 5.34 (0.2102) 31439-81X17 50 4.70 (0.1850) 31439 85X06
19 5.36 (0.2110) 31439-81X18 51 4.72 (0.1858) 31439 83X11
20 5.38 (0.2118) 31439-81X19 52 4.74 (0.1866) 31439 83X12
21 5.40 (0.2126) 31439-81X20 53 4.76 (0.1874) 31439 83X13
22 5.42 (0.2134) 31439-81X21 54 4.78 (0.1882) 31439 83X14
23 5.44 (0.2142) 31439-81X22 55 4.80 (0.1890) 31439 83X15
24 5.46 (0.2150) 31439-81X23 56 4.82 (0.1898) 31439 83X16
25 5.48 (0.2157) 31439-81X24 57 4.84 (0.1906) 31439 83X17
26 5.50 (0.2165) 31439-81X46 58 4.86 (0.1913) 31439 83X18
27 5.52 (0.2173) 31439-81X47 59 4.88 (0.1921) 31439 83X19
28 5.54 (0.2181) 31439-81X48 60 4.90 (0.1929) 31439 83X20
29 5.56 (0.2189) 31439-81X49 61 4.92 (0.1937) 31439 83X21
30 5.58 (0.2197) 31439-81X60 62 4.94 (0.1945) 31439 83X22

SERVICE DATA AND SPECIFICATIONS (SDS)
AT-569
[ALL]
D
E
F
G
H
I
J
K
L
MA
B
AT
*: Always check with the Parts Department for the latest parts information.
Band ServoECS004MT
RETURN SPRING
Unit: mm (in)
*: Always check with the Parts Department for the latest parts information.
Output ShaftECS004MU
SEAL RING CLEARANCE
SEAL RING
*: Always check with the Parts Department for the latest parts information.
END PLAY
OUTPUT SHAFT ADJUSTING SHIMS
*: Always check with the Parts Department for the latest parts information.
Bearing RetainerECS004MV
SEAL RING CLEARANCE
To ta l E n d P l a yECS004MW
31 5.60 (0.2205) 31439-81X61 63 4.96 (0.1953) 31439 83X23
32 5.62 (0.2213) 31439-81X62 64 4.98 (0.1961) 31439 83X24 NO. Thickness mm (in) Part number NO. Thickness mm (in) Part number*
Return spring Part number* Free length Outer diameter
2nd servo return spring 31605-31X20 32.5 (1.280) 25.9 (1.020)
OD servo return spring 31605-80X07 31.0 (1.220) 62.6 (2.465)
Output shaft seal ring clearance mm
(in)Standard 0.10 - 0.25 (0.0039 - 0.0098)
Allowable limit 0.25 (0.0098)
Outer diameter mm (in) 1nner diameter mm (in) Width mm (in) Part number*
33.71 (1.327) 30.25 (1.191) 1.95 (0.077) 31525 80X09
Output shaft end play mm (in) 0 - 0.15 (0 - 0.0059)
Thickness mm (in) Part number*
0.80 (0.0315)
0.84 (0.0331)
0.88 (0.0346)
0.92 (0.0362)
0.96 (0.0378)
1.00 (0.0394)
1.04 (0.0409)
1.08 (0.0425)
1.12 (0.0441)
1.16 (0.0457)
1.20 (0.0472)31438-80X60
31438-80X61
31438-80X62
31438-80X63
31438-80X64
31438-80X65
31438-80X66
31438-80X67
31438-80X68
31438-80X69
31438-80X70
Bearing retainer seal ring
clearance mm (in)Standard 0.10 - 0.30 (0.0039 - 0.0118)
Allowable limit 0.30 (0.0118)
Total end play mm (in) 0.25 - 0.55 (0.0098 - 0.0217)

SERVICE DATA AND SPECIFICATIONS (SDS)
BR-33
C
D
E
G
H
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MA
B
BR
SERVICE DATA AND SPECIFICATIONS (SDS)PFP:00030
General SpecificationsEFS000CQ
Brake PedalEFS000CR
Check ValveEF S0 00 CS
Brake BoosterEFS000CT
Vacuum type
Front Disc BrakeEFS000CU
Front brakeBrake model AD31VD
Cylinder bore diameter 44.4´2(1.748´0.08)
Pad
Length x width x thickness132.0´52.5´11 . 0
(5.20´2.067´0.433)
Rotor outer diameter x thickness 280´28 (11.02´1.10)
Rear brakeBrake model ADV9VA
Cylinder bore diameter 34.9 (1.374)
Pad
Length x width x thickness83.0´33.0´8.5
(3.268´1.299´0.335)
Rotor outer diameter x thickness 292´16 (11.50´0.63)
Master cylinder Cylinder bore diameter 25.4 (1)
Control valve Valve model Electronic control type
Brake booster Booster model C215T
Diaphragm diameterPrimary 230 (9.06)
Secondary 205 (8.07)
Recommended brake fluid DOT 3 or DOT 4
Free play (at pedal top surface) 3 - 11 mm (0.12 - 0.43 in)
Looseness at clevis pin (at pedal top surface) 1 - 3 mm (0.04 - 0.12 in)
Brake pedal height (from dash panel top surface)M/T model 156 - 166 mm (6.14 - 6.54 in)
A/T model 164 - 174 mm (6.46 - 6.85 in)
Depressed pedal height under force of 490 N (50 kg,110.6 lb)
(from dash panel top surface)M/T model 80 mm (3.15 in) or more
A/T model 85 mm (3.35 in) or more
Clearance between threaded end of stop lamp switch and pedal stopper 0.74 - 1.96 mm (0.0291 - 0.0772 in)
Vacuum leakage [at vacuum of 66.7 kPa (-500 mmHg, -19.69
inHg)]Within 1.3 kPa (10 mmHg, 0.39 inHg) of vacuum for 15 sec-
onds
Vacuum leakage [at vacuum of -66.7 kPa (-500 mmHg, -19.69
inHg)]Within 3.3 kPa (25 mmHg, 0.98 inHg) of vacuum for 15 sec-
onds
Input rod installation standard dimension 125 mm (4.92 in)
Brake typeAD31VD
Brake padStandard thickness (new) 11 mm (0.43 in)
Repair limit thickness 2.0 mm (0.07 in)
Disc rotorStandard thickness (new) 28 mm (1.10 in)
Repair limit thickness 26 mm (1.02 in)
Runout limit 0.04 mm (0.0016 in)

ENGINE CONTROL SYSTEM
EC-25
[QR (WITH EURO-OBD)]
C
D
E
F
G
H
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MA
EC
SYSTEM DESCRIPTION
The amount of fuel injected from the fuel injector is determined by the ECM. The ECM controls the length of
time the valve remains open (injection pulse duration). The amount of fuel injected is a program value in the
ECM memory. The program value is preset by engine operating conditions. These conditions are determined
by input signals (for engine speed and intake air) from both the crankshaft position sensor and the mass air
flow sensor.
VARIOUS FUEL INJECTION INCREASE/DECREASE COMPENSATION
In addition, the amount of fuel injected is compensated to improve engine performance under various operat-
ing conditions as listed below.

lDuring warm-up
lWhen starting the engine
lDuring acceleration
lHot-engine operation
lWhen selector lever is changed from “N” to “D”
lHigh-load, high-speed operation

lDuring deceleration
lDuring high engine speed operation
MIXTURE RATIO FEEDBACK CONTROL (CLOSED LOOP CONTROL)
The mixture ratio feedback system provides the best air-fuel mixture ratio for driveability and emission control.
The three way catalyst (manifold) can then better reduce CO, HC and NOx emissions. This system uses
heated oxygen sensor 1 in the exhaust manifold to monitor if the engine operation is rich or lean. The ECM
adjusts the injection pulse width according to the sensor voltage signal. For more information about heated
oxygen sensor 1, refer toEC-160
. This maintains the mixture ratio within the range of stoichiometric (ideal air-
fuel mixture).
This stage is referred to as the closed loop control condition.
Heated oxygen sensor 2 is located downstream of the three way catalyst (manifold). Even if the switching
characteristics of heated oxygen sensor 1 shift, the air-fuel ratio is controlled to stoichiometric by the signal
from heated oxygen sensor 2.
Open Loop Control
The open loop system condition refers to when the ECM detects any of the following conditions. Feedback
control stops in order to maintain stabilized fuel combustion.
lDeceleration and acceleration
lHigh-load, high-speed operation
lMalfunction of heated oxygen sensor 1 or its circuit
lInsufficient activation of heated oxygen sensor 1 at low engine coolant temperature
lHigh engine coolant temperature
lDuring warm-up
lAfter shifting from “N” to “D”
lWhen starting the engine
PBIB0121E

EC-26
[QR (WITH EURO-OBD)]
ENGINE CONTROL SYSTEM
MIXTURE RATIO SELF-LEARNING CONTROL
The mixture ratio feedback control system monitors the mixture ratio signal transmitted from heated oxygen
sensor 1. This feedback signal is then sent to the ECM. The ECM controls the basic mixture ratio as close to
the theoretical mixture ratio as possible. However, the basic mixture ratio is not necessarily controlled as orig-
inally designed. Both manufacturing differences (i.e., mass air flow sensor hot film) and characteristic changes
during operation (i.e., injector clogging) directly affect mixture ratio.
Accordingly, the difference between the basic and theoretical mixture ratios is monitored in this system. This is
then computed in terms of “injection pulse duration” to automatically compensate for the difference between
the two ratios.
“Fuel trim” refers to the feedback compensation value compared against the basic injection duration. Fuel trim
includes short term fuel trim and long term fuel trim.
“Short term fuel trim” is the short-term fuel compensation used to maintain the mixture ratio at its theoretical
value. The signal from heated oxygen sensor 1 indicates whether the mixture ratio is RICH or LEAN compared
to the theoretical value. The signal then triggers a reduction in fuel volume if the mixture ratio is rich, and an
increase in fuel volume if it is lean.
“Long term fuel trim” is overall fuel compensation carried out long-term to compensate for continual deviation
of the short term fuel trim from the central value. Such deviation will occur due to individual engine differences,
wear over time and changes in the usage environment.
FUEL INJECTION TIMING
Two types of systems are used.
Sequential Multiport Fuel Injection System
Fuel is injected into each cylinder during each engine cycle according to the firing order. This system is used
when the engine is running.
Simultaneous Multiport Fuel Injection System
Fuel is injected simultaneously into all four cylinders twice each engine cycle. In other words, pulse signals of
the same width are simultaneously transmitted from the ECM.
The four injectors will then receive the signals two times for each engine cycle.
This system is used when the engine is being started and/or if the fail-safe system (CPU) is operating.
FUEL SHUT-OFF
Fuel to each cylinder is cut off during deceleration or operation of the engine at excessively high speeds.
SEF337W

ENGINE CONTROL SYSTEM
EC-27
[QR (WITH EURO-OBD)]
C
D
E
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G
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EC
Electronic Ignition (EI) SystemEBS00B0S
INPUT/OUTPUT SIGNAL CHART
SYSTEM DESCRIPTION
The ignition timing is controlled by the ECM to maintain the best air-
fuel ratio for every running condition of the engine. The ignition tim-
ing data is stored in the ECM. This data forms the map shown.
The ECM receives information such as the injection pulse width and
camshaft position sensor signal. Computing this information, ignition
signals are transmitted to the power transistor.
e.g.,N:1,800rpm,Tp:1.50msec
A°BTDC
During the following conditions, the ignition timing is revised by the
ECM according to the other data stored in the ECM.
lAt starting
lDuring warm-up
lAt idle
lAt low battery voltage
lDuring acceleration
The knock sensor retard system is designed only for emergencies. The basic ignition timing is programmed
within the anti-knocking zone, if recommended fuel is used under dry conditions. The retard system does not
operate under normal driving conditions. If engine knocking occurs, the knock sensor monitors the condition.
The signal is transmitted to the ECM. The ECM retards the ignition timing to eliminate the knocking condition.
Air Conditioning Cut ControlEBS00B0T
INPUT/OUTPUT SIGNAL CHART
SYSTEM DESCRIPTION
This system improves engine operation when the air conditioner is used.
Under the following conditions, the air conditioner is turned off.
Sensor Input Signal to ECMECM func-
tionActuator
Crankshaft position sensor (POS)
Engine speed
Piston position
Ignition
timing con-
trolPower transistor Camshaft position sensor (PHASE)
Mass air flow sensor Amount of intake air
Engine coolant temperature sensor Engine coolant temperature
Throttle position sensor Throttle position
Accelerator pedal position sensor Accelerator pedal position
Ignition switch Start signal
Knock sensor Engine knocking
Park/neutral position (PNP) switch Gear position
Battery Battery voltage
Wheel sensor Vehicle speed
SEF742M
Sensor Input Signal to ECM ECM function Actuator
Air conditioner switch Air conditioner “ON” signal
Air conditioner
cut controlAir conditioner relay Throttle position sensor Throttle valve opening angle
Crankshaft position sensor (POS) Engine speed
Engine coolant temperature sensor Engine coolant temperature
Ignition switch Start signal
Refrigerant pressure sensor Refrigerant pressure
Power steering pressure sensor Power steering operation
Wheel sensor Vehicle speed