2005 NISSAN X-TRAIL gear shift

OVERALL SYSTEM
AT-39
D
E
F
G
H
I
J
K
L
MA
B
AT

Control ValveECS004QG
FUNCTION OF CONTROL VALVES
Valve name Function
Pressure regulator valve, plug and sleeve
plugRegulates oil discharged from the oil pump to provide optimum line pressure for all driv-
ing conditions.
Pressure modifier valve and sleeve Used as a signal supplementary valve to the pressure regulator valve. Regulates pres-
sure-modifier pressure (signal pressure) which controls optimum line pressure for all
driving conditions.
Pilot valve Regulates line pressure to maintain a constant pilot pressure level which controls lock-up
mechanism, overrun clutch, shift timing.
Accumulator control valve Regulates accumulator back-pressure to pressure suited to driving conditions.
Manual valve Directs line pressure to oil circuits corresponding to select positions.
Hydraulic pressure drains when the shift lever is in Neutral.
Shift valve A Simultaneously switches three oil circuits using output pressure of shift solenoid valve A
to meet driving conditions (vehicle speed, throttle opening, etc.).
Provides automatic downshifting and upshifting (1st → 2nd → 3rd → 4th gears/4th →
3rd → 2nd → 1st gears) in combination with shift valve B.
Shift valve B Simultaneously switches two oil circuits using output pressure of shift solenoid valve B in
relation to driving conditions (vehicle speed, throttle opening, etc.).
Provides automatic downshifting and upshifting (1st → 2nd → 3rd → 4th gears/4th →
3rd → 2nd → 1st gears) in combination with shift valve A.
Overrun clutch control valve Switches hydraulic circuits to prevent engagement of the overrun clutch simultaneously
with application of the brake band in D
4 . (Interlocking occurs if the overrun clutch
engages during D
4 .)
1st reducing valve Reduces low & reverse brake pressure to dampen engine-brake shock when downshift-
ing from the 1st position 1
2 to 11 .
Overrun clutch reducing valve Reduces oil pressure directed to the overrun clutch and prevents engine-brake shock.
In the 1st and 2nd positions, line pressure acts on the overrun clutch reducing valve to
increase the pressure-regulating point, with resultant engine brake capability.
Torque converter relief valve Prevents an excessive rise in torque converter pressure.
Torque converter clutch control valve, plug
and sleeveActivates or inactivates the lock-up function.
Also provides smooth lock-up through transient application and release of the lock-up
system.
1-2 accumulator valve and piston Lessens the shock find when the 2nd gear band servo contracts, and provides smooth
shifting.
3-2 timing valve Switches the pace that oil pressure is released depending on vehicle speed; maximizes
the high clutch release timing, and allows for soft downshifting.
Shuttle valve Determines if the overrun clutch solenoid valve should control the 3-2 timing valve or the
overrun clutch control valve and switches between the two.
Cooler check valve At low speeds and with a small load when a little heat is generated, saves the volume of
cooler flow, and stores the oil pressure for lock-up.

AT-44
[EURO-OBD]
ON BOARD DIAGNOSTIC SYSTEM DESCRIPTION

Malfunction Indicator (MI)ECS004QL
1. The malfunction indicator will light up when the ignition switch is
turned ON without the engine running. This is for checking the
lamp.

If the malfunction indicator does not light up, refer to DI-35,
"Schematic" .
(Or see MI & CONSULT-II in EC section. Refer to EC-64,
"Malfunction Indicator (MI)" (WITH EURO-OBD) or EC-568,
"Malfunction Indicator (MI)" (WITHOUT EURO-OBD) or EC-
103, "CONSULT-II Function (ENGINE)" (WITH EURO-OBD)
or EC-604, "
CONSULT-II Function (ENGINE)" (WITHOUT
EURO-OBD).
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 EC-52, "
ON BOARD DIAGNOSTIC (OBD) SYSTEM" .
CONSULT-IIECS004QM
After performing “SELF-DIAGNOSTIC PROCEDURE (WITH CONSULT-II)” AT- 4 5 , place check marks for
results on the “DIAGNOSTIC WORKSHEET”, AT- 5 8
. 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.
FUNCTION
SAT652J
Diagnostic test mode Function Reference page
Work supportThis mode enables a technician to adjust some devices faster and more accurately by
following the indications on CONSULT-II.—
Self-diagnostic results Self-diagnostic results can be read and erased quickly.AT- 4 5
Data monitor Input/Output data in the ECM can be read.AT- 4 6
CAN diagnostic support
monitorThe results of transmit/receive diagnosis of CAN communication can be read. —
Function testConducted by CONSULT-II instead of a technician to determine whether each system
is “OK” or “NG”.—
DTC work support Select the operating condition to confirm Diagnosis Trouble Codes.AT- 4 7
TCM part number TCM part number can be read. —

ON BOARD DIAGNOSTIC SYSTEM DESCRIPTION
AT-45
[EURO-OBD]
D
E
F
G
H
I
J
K
L
MA
B
AT

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 to AT- 9 4 , "
TCM Terminals and Reference Value" . If
result is NG, refer to PG-2, "
POWER SUPPLY ROUTING" .
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
SAT014K
SAT987J
Items (CONSULT-II screen terms) Malfunction is detected when... EURO-OBD (DTC)
CAN COMM CIRCUIT

Malfunction is detected in CAN communication line. U1000
VHCL SPEED SEN·A/T

TCM does not receive the proper voltage signal from the sensor.P0720
VHCL SPEED SEN·MTR—
THROTTLE POSI SEN

TCM receives an excessively low or high voltage from this sensor P1705
SHIFT SOLENOID/V A

TCM detects an improper voltage drop when it tries to operate the sole-
noid valve.P0750
SHIFT SOLENOID/V B

TCM detects an improper voltage drop when it tries to operate the sole-
noid valve.P0755
OVERRUN CLUTCH S/V

TCM detects an improper voltage drop when it tries to operate the sole-
noid valve.P1760
T/C CLUTCH SOL/V

TCM detects an improper voltage drop when it tries to operate the sole-
noid valve.P0740
ATF TEMP SEN/CIRC

TCM receives an excessively low or high voltage from the sensor.P0710
BATT/FLUID TEMP SEN—
ENGINE SPEED SIG

TCM does not receive the proper voltage signal from the ECM. P0725
A/T 1ST GR FNCTN

A/T cannot be shifted to the 1st gear position even if electrical circuit is
good.P0731*1
A/T 2ND GR FNCTN

A/T cannot be shifted to the 2nd gear position even if electrical circuit is
good.P0732*1
A/T 3RD GR FNCTN

A/T cannot be shifted to the 3rd gear position even if electrical circuit is
good.P0733*1
A/T 4TH GR FNCTN

A/T cannot be shifted to the 4th gear position even if electrical circuit is
good.P0734*1
LINE PRESSURE S/V

TCM detects an improper voltage drop when it tries to operate the sole-
noid valve.P0745
CONTROL UNIT (RAM)

TCM memory (RAM) is malfunctioning —
CONTROL UNIT (ROM)

TCM memory (ROM) is malfunctioning —

AT-46
[EURO-OBD]
ON BOARD DIAGNOSTIC SYSTEM DESCRIPTION

*1: These malfunctions cannot be displayed by MI if another malfunction is assigned to lamp MI.
DATA MONITOR MODE (A/T)
X: Standard, —: Not applicable, : Option CONT UNIT(EEP ROM)

TCM memory (EEP ROM) is malfunctioning. —
PNP SW/CIRC

TCM does not receive the correct voltage signal (based on the gear
position) from the switch.P0705
INITIAL START

This is not a malfunction message (Whenever shutting off a power sup-
ply to the TCM, this message appears on the screen).—
No failure
(NO SELF DIAGNOSTIC FAILURE
INDICATED FURTHER TESTING
MAY BE REQUIRED)

No failure has been detected. — Items (CONSULT-II screen terms) Malfunction is detected when... EURO-OBD (DTC)
Monitor item (Unit)SELECT MONITOR ITEM
Remarks
TCM INPUT
SIGNALSMAIN SIG-
NALSSELEC-
TION FROM
MENU
VHCL/S SE·A/T (km/h) X — Revolution sensor
VHCL/S SE·MTR (km/h) X —Vehicle speed display may not be accu-
rate under approx. 10 km/h (6 mph). It
may not indicate 0 km/h (0 mph) when
vehicle is stationary.
THRTL POS SEN (V) X —
FLUID TEMP SE (V) X —
BATTERY VOLT (V) X —
ENGINE SPEED (rpm) X X
TURBINE REV (rpm) X —
OVERDRIVE SW (ON/OFF) X —
PN POSI SW (ON/OFF) X —
R POSITION SW (ON/OFF) X —
D POSITION SW (ON/OFF) X —
2 POSITION SW (ON/OFF) X —
1 POSITION SW (ON/OFF) X —
ASCD·CRUISE (ON/OFF) X —
Signal input with CAN communication.
ACC OD CUT (ON/OFF) X —
KICKDOWN SW (ON/OFF) X —
Not mounted but displayed.
POWERSHIFT SW (ON/OFF) X —
CLOSED THL/SW (ON/OFF) X —
Signal input with CAN communication.
W/O THRL/P-SW (ON/OFF) X —
*SHIFT S/V A (ON/OFF) — —
Displays status of check signal (reinput
signal) for TCM control signal output.
Remains unchanged when solenoid
valves are open or shorted. *SHIFT S/V B (ON/OFF) — —
*OVERRUN/C S/V (ON/OFF) — —
HOLD SW (ON/OFF) X — Not mounted but displayed.
BRAKE SW (ON/OFF) X — Stop lamp switch

ON BOARD DIAGNOSTIC SYSTEM DESCRIPTION
AT-47
[EURO-OBD]
D
E
F
G
H
I
J
K
L
MA
B
AT

DTC WORK SUPPORT MODE WITH CONSULT-II

For details, refer to the separate “CONSULT-II Operations Manual”.
CONSULT-II Setting Procedure
1. Turn ignition switch “OFF”.
2. Connect CONSULT-II and CONSULT-II CONVERTER to data
link connector, which is located in instrument lower panel on
driver side.
GEAR — XGear position recognized by the TCM
updated after gear-shifting
SLCT LVR POSI — XSelector lever position is recognized by
the TCM.
For fail-safe operation, the specific value
used for control is displayed.
VEHICLE SPEED (km/h) — X Vehicle speed recognized by the TCM.
THROTTLE POSI (0.0/8) — XDegree of opening for accelerator recog-
nized by the TCM
For fail-safe operation, the specific value
used for control is displayed.
LINE PRES DTY (%) — X
TCC S/V DUTY (%) — X
SHIFT S/V A (ON/OFF) — X
SHIFT S/V B (ON/OFF) — X
OVERRUN/C S/V (ON/OFF) — X
SELF-D DP LMP (ON/OFF) — X
TC SLIP RATIO (0.000) — —
TC SLIP SPEED (rpm) — —Difference between engine speed and
torque converter input shaft speed
Voltage (V) — —Displays the value measured by the volt-
age probe.
Frequency (Hz) — —
The value measured by the pulse probe
is displayed. DUTY·HI (high) (%) — —
DUTY·LOW (low) (%) — —
PLS WIDTH·HI (ms) — —
PLS WIDTH·LOW (ms) — —Monitor item (Unit)SELECT MONITOR ITEM
Remarks
TCM INPUT
SIGNALSMAIN SIG-
NALSSELEC-
TION FROM
MENU
SCIA0691E

AT-50
[EURO-OBD]
ON BOARD DIAGNOSTIC SYSTEM DESCRIPTION


If “NG” appears on the screen, malfunction may exist. Go
to “Diagnostic Procedure”.
11. Perform test drive to check gear shift feeling in accordance with
instructions displayed.
12. Touch “YES” or “NO”.
13. CONSULT-II procedure ended.
If “NG” appears on the screen, a malfunction may exist. Go to
“Diagnostic Procedure”.

If “NG” appears on the screen, a malfunction may exist.
Go to “Diagnostic Procedure”.
SAT593J
SAT594J
SAT595J
SAT596J
SAT593J

ON BOARD DIAGNOSTIC SYSTEM DESCRIPTION
AT-51
[EURO-OBD]
D
E
F
G
H
I
J
K
L
MA
B
AT

DTC WORK SUPPORT MODE
DTC work support item Description Check items (Possible cause)
1ST GR FNCTN P0731Following items for “A/T 1st gear function (P0731)” can be con-
firmed.

Self-diagnosis status (whether the diagnosis is being conducted
or not)

Self-diagnosis result (OK or NG)

Shift solenoid valve A

Shift solenoid valve B

Each clutch

Hydraulic control circuit
2ND GR FNCTN P0732Following items for “A/T 2nd gear function (P0732)” can be con-
firmed.

Self-diagnosis status (whether the diagnosis is being conducted
or not)

Self-diagnosis result (OK or NG)

Shift solenoid valve B

Each clutch

Hydraulic control circuit
3RD GR FNCTN P0733Following items for “A/T 3rd gear function (P0733)” can be con-
firmed.

Self-diagnosis status (whether the diagnosis is being conducted
or not)

Self-diagnosis result (OK or NG)

Shift solenoid valve A

Each clutch

Hydraulic control circuit
4TH GR FNCTN P0734Following items for “A/T 4th gear function (P0734)” can be con-
firmed.

Self-diagnosis status (whether the diagnosis is being conducted
or not)

Self-diagnosis result (OK or NG)

Shift solenoid valve A

Shift solenoid valve B

Overrun clutch solenoid valve

Line pressure solenoid valve

Each clutch

Hydraulic control circuit

AT-60
[EURO-OBD]
TROUBLE DIAGNOSIS — INTRODUCTION

4. 4-3. Cruise testAT- 7 4
AT- 7 8Part-1
❏ Vehicle Cannot Be Started From D
1 , AT-214 .
❏ A/T Does Not Shift: D
1 → D2 Or Does Not Kickdown: D4 → D2 , AT- 2 1 7 .
❏ A/T Does Not Shift: D
2 → D3 , AT-220 .
❏ A/T Does Not Shift: D
3 → D4 , AT-222 .
❏ A/T Does Not Perform Lock-up, AT- 2 2 4
.
❏ A/T Does Not Hold Lock-up Condition, AT- 2 2 5
.
❏ Lock-up Is Not Released, AT- 2 2 7
.
❏ Engine Speed Does Not Return To Idle (Light Braking D
4 → D3 ), AT- 2 2 8 .
Part-2AT- 8 1
❏ Vehicle Does Not Start From D1 , AT-230 .
❏ A/T Does Not Shift: D
1 → D2 Or Does Not Kickdown: D4 → D2 , AT- 2 1 7 .
❏ A/T Does Not Shift: D
2 → D3 , AT-220 .
❏ A/T Does Not Shift: D
3 → D4 , AT-222 .
Part-3AT- 8 2
❏ A/T Does Not Shift: D4 → D3 When Overdrive Control Switch “ON” → “OFF”, AT- 2 3 1 .
❏ Engine Speed Does Not Return To Idle (Engine Brake In D
3 ), AT-228 .
❏ A/T Does Not Shift: D
3 → 22 , When Selector Lever “D” → “2” Position, AT-232 .
❏ Engine Speed Does Not Return To Idle (Engine Brake In 2
2 ), AT- 2 2 8 .
❏ A/T Does Not Shift: 2
2 → 11 , When Selector Lever “2” → “1” Position, AT- 2 3 3 .
❏ Vehicle Does Not Decelerate By Engine Brake, AT-235
.
❏ TCM Self-diagnosis Does Not Activate (PNP & Overdrive control switches, and throttle position sensor
circuit checks), AT-237
.
❏ SELF-DIAGNOSTIC PROCEDURE/DIAGNOSTIC TROUBLE CODE (DTC) CONFIRMATION PRO-
CEDURE — Mark detected items.
❏ PNP switch, AT-100
.
❏ A/T fluid temperature sensor, AT-106
.
❏ Vehicle speed sensor·A/T (Revolution sensor), AT- 11 2
.
❏ Engine speed signal, AT- 11 9
.
❏ Torque converter clutch solenoid valve, AT- 1 4 8
.
❏ Line pressure solenoid valve, AT-154
.
❏ Shift solenoid valve A, AT-161
.
❏ Shift solenoid valve B, AT-167
.
❏ Accelerator pedal position (App) sensor, AT-173
.
❏ Overrun clutch solenoid valve, AT-178
.
❏ PNP & overdrive control switches, and throttle position sensor, AT- 2 3 7
.
❏ A/T fluid temperature sensor and TCM power source, AT-184
.
❏ Vehicle speed sensor·MTR, AT- 1 9 2
.
❏ CAN communication line, AT- 9 7
.
❏ Control unit (RAM), control unit (ROM), AT- 1 9 8
.
❏ Control unit (EEP ROM), AT- 2 0 0
.
❏ Battery
❏ Others
5.❏ For self-diagnosis NG items, inspect each component. Repair or replace the damaged parts.AT- 5 2
6.❏ Perform all Road Test and re-mark required procedures.AT- 7 0
7.❏ Perform DTC Confirmation Procedure for following MI indicating items and check out NG items.EC-53
❏ DTC (P0731) A/T 1st gear function, AT-125 .
❏ DTC (P0732) A/T 2nd gear function, AT- 1 3 0
.
❏ DTC (P0733) A/T 3rd gear function, AT-135
.
❏ DTC (P0734) A/T 4th gear function, AT-140
.
8.❏ Perform the Diagnostic Procedures for all remaining items marked NG. Repair or replace the damaged parts.
Refer to the Symptom Chart when you perform the procedures. (The chart also shows some other possible
symptoms and the component inspection orders.)AT- 8 5
9.❏ Erase DTC from TCM and ECM memories.AT- 4 2