2003 NISSAN X-TRAIL clutch

TROUBLE DIAGNOSIS — GENERAL DESCRIPTION
AT-95
[EURO-OBD]
D
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11 L / WShift solenoid
valve AWhen shift solenoid valve A oper-
ates.
(When driving in “D1 ” or “D4 ”.)Battery voltage
When shift solenoid valve A does not
operate.
(When driving in “D
2 ” or “D3 ”.)0V
12 L/YShift solenoid
valve BWhen shift solenoid valve B oper-
ates.
(When driving in “D
1 ” or “D2 ”.)Battery voltage
When shift solenoid valve B does not
operate.
(When driving in “D
3 ” or “D4 ”.)0V
19 BR/W Power source
or Same as No. 10
20 L/BOverrun clutch
solenoid valveWhen overrun clutch solenoid valve
operates.Battery voltage
When overrun clutch solenoid valve
does not operate.0V
25 B Ground Always 0V
26 BR/YPNP switch “1”
position
and When setting selector lever to “1”
position.Battery voltage
When setting selector lever to other
positions.0V
27 LPNP switch “2”
positionWhen setting selector lever to “2”
position.Battery voltage
When setting selector lever to other
positions.0V
28 LPower source
(Memory back-up) Always Battery voltage
29 W/R Revolution sensorWhen moving at 20 km/h (12 MPH) 450 Hz
When vehicle parks.Under 1.3V or
over 4.5V
30 *2 G/B CONSULT- II (RX) — —
31 *2 W CONSULT- II (TX) — —
32 *1 RAccelerator pedal
position (APP)
sensor
(Power source) or When turning ignition switch to “ON”. 4.5 - 5.5V
When turning ignition switch to
“OFF”.0V Termi-
nal No.Wire color Item ConditionJudgementstan-
dard(Approx.)

DTC P0731 A/T 1ST GEAR FUNCTION
AT-125
[EURO-OBD]
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DTC P0731 A/T 1ST GEAR FUNCTIONPFP:31940
DescriptionECS004RA

This malfunction will not be detected while the O/D OFF indicator lamp is indicating another self-diagnosis
malfunction.

This malfunction is detected when the A/T does not shift into first gear position as instructed by the TCM.
This is not caused by electrical malfunction (circuits open or shorted) but by mechanical malfunction such
as control valve sticking, improper solenoid valve operation, etc.
On Board Diagnostic LogicECS00CTS
This diagnosis monitors actual gear position by checking the torque converter slip ratio calculated by TCM as
follows:
Torque converter slip ratio = A x C/B
A: Output shaft revolution signal from revolution sensor
B: Engine speed signal from ECM
C: Gear ratio determined as gear position which TCM supposes
If the actual gear position is higher than the position (1st) supposed by TCM, the slip ratio will be more than
normal. In case the ratio exceeds the specified value, TCM judges this diagnosis malfunction.
This malfunction will be caused when either shift solenoid valve A is stuck open or shift solenoid valve B is
stuck open.
*: P0731 is detected.
Possible CauseECS00CTT
Check the following items.

Shift solenoid valve A

Shift solenoid valve B

Each clutch

Hydraulic control circuit
DTC Confirmation ProcedureECS00CTU
CAUTION:

Always drive vehicle at a safe speed.

Be careful not to rev engine into the red zone on the tachometer.
NOTE:
If “DTC Confirmation Procedure” has been previously conducted, always turn ignition switch “OFF”
and wait at least 5 seconds before conducting the next test.
TESTING CONDITION:
Always drive vehicle on a level road to improve the accuracy of test.
After the repair, perform the following procedure to confirm the malfunction is eliminated.
Gear position 1 2 3 4
Shift solenoid valve A ON (Closed) OFF (Open) OFF (Open) ON (Closed)
Shift solenoid valve B ON (Closed) ON (Closed) OFF (Open) OFF (Open)
Gear position supposed by TCM 1 2 3 4
In case of gear position with no malfunctions 1 2 3 4
In case of gear position with shift solenoid valve A stuck open 2* 2 3 3
In case of gear position with shift solenoid valve B stuck open 4* 3 3 4
Diagnostic trouble code Malfunction is detected when... Check items (Possible cause)
: A/T 1ST GR FNCTN
A/T cannot be shifted to the 1st gear posi-
tion even if electrical circuit is good.

Shift solenoid valve A

Shift solenoid valve B

Each clutch

Hydraulic control circuit : P0731

AT-130
[EURO-OBD]
DTC P0732 A/T 2ND GEAR FUNCTION

DTC P0732 A/T 2ND GEAR FUNCTIONPFP:31940
DescriptionECS004RE

This malfunction will not be detected while the O/D OFF indicator lamp is indicating another self-diagnosis
malfunction.

This malfunction is detected when the A/T does not shift into second gear position as instructed by the
TCM. This is not caused by electrical malfunction (circuits open or shorted) but by mechanical malfunction
such as control valve sticking, improper solenoid valve operation, etc.
On Board Diagnostic LogicECS00CTV
This diagnosis monitors actual gear position by checking the torque converter slip ratio calculated by TCM as
follows:
Torque converter slip ratio = A x C/B
A: Output shaft revolution signal from revolution sensor
B: Engine speed signal from ECM
C: Gear ratio determined as gear position which TCM supposes
If the actual gear position is higher than the position (2nd) supposed by TCM, the slip ratio will be more than
normal. In case the ratio exceeds the specified value, TCM judges this diagnosis malfunction.
This malfunction will be caused when shift solenoid valve B is stuck open.
*: P0732 is detected.
Possible CauseECS00CTW
Check the following items.

Shift solenoid valve B

Each clutch

Hydraulic control circuit
DTC Confirmation ProcedureECS00CTX
CAUTION:

Always drive vehicle at a safe speed.

Be careful not to rev engine into the red zone on the tachometer.
NOTE:
If “DTC Confirmation Procedure” has been previously conducted, always turn ignition switch OFF and
wait at least 5 seconds before conducting the next test.
TESTING CONDITION:
Always drive vehicle on a level road to improve the accuracy of test.
After the repair, perform the following procedure to confirm the malfunction is eliminated.
Gear position 1 2 3 4
Shift solenoid valve A ON (Closed) OFF (Open) OFF (Open) ON (Closed)
Shift solenoid valve B ON (Closed) ON (Closed) OFF (Open) OFF (Open)
Gear position supposed by TCM 1 2 3 4
In case of gear position with no malfunctions 1 2 3 4
In case of gear position with shift solenoid valve B stuck open 4 3* 3 4
Diagnostic trouble code Malfunction is detected when... Check items (Possible cause)
: A/T 2ND GR FNCTN
A/T cannot be shifted to the 2nd gear
position even if electrical circuit is good.

Shift solenoid valve B

Each clutch

Hydraulic control circuit : P0732

DTC P0733 A/T 3RD GEAR FUNCTION
AT-135
[EURO-OBD]
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DTC P0733 A/T 3RD GEAR FUNCTIONPFP:31940
DescriptionECS004RI

This malfunction will not be detected while the O/D OFF indicator lamp is indicating another self-diagnosis
malfunction.

This malfunction is detected when the A/T does not shift into third gear position as instructed by the TCM.
This is not caused by electrical malfunction (circuits open or shorted) but by mechanical malfunction such
as control valve sticking, improper solenoid valve operation, malfunctioning servo piston or brake band,
etc.
On Board Diagnostic LogicECS00CTY
This diagnosis monitors actual gear position by checking the torque converter slip ratio calculated by TCM as
follows:
Torque converter slip ratio = A x C/B
A: Output shaft revolution signal from revolution sensor
B: Engine speed signal from ECM
C: Gear ratio determined as gear position which TCM supposes
If the actual gear position is higher than the position (3rd) supposed by TCM, the slip ratio will be more than
normal. In case the ratio exceeds the specified value, TCM judges this diagnosis malfunction.
This malfunction will be caused when shift solenoid valve A is stuck closed.
*: P0733 is detected.
Possible CauseECS00CTZ
Check the following items.

Shift solenoid valve A

Each clutch

Hydraulic control circuit
DTC Confirmation ProcedureECS00CU0
CAUTION:

Always drive vehicle at a safe speed.

Be careful not to rev engine into the red zone on the tachometer.
NOTE:
If “DTC Confirmation Procedure” has been previously conducted, always turn ignition switch OFF and
wait at least 5 seconds before conducting the next test.
TESTING CONDITION:
Always drive vehicle on a level road to improve the accuracy of test.
After the repair, perform the following procedure to confirm the malfunction is eliminated.
Gear position 1 2 3 4
Shift solenoid valve A ON (Closed) OFF (Open) OFF (Open) ON (Closed)
Shift solenoid valve B ON (Closed) ON (Closed) OFF (Open) OFF (Open)
Gear position supposed by TCM 1 2 3 4
In case of gear position with no malfunctions 1 2 3 4
In case of gear position with shift solenoid valve A stuck closed 1 1 4* 4
Diagnostic trouble code Malfunction is detected when... Check items (Possible cause)
: A/T 3RD GR FNCTN
A/T cannot be shifted to the 3rd gear posi-
tion even if electrical circuit is good.

Shift solenoid valve A

Each clutch

Hydraulic control circuit : P0733

AT-140
[EURO-OBD]
DTC P0734 A/T 4TH GEAR FUNCTION

DTC P0734 A/T 4TH GEAR FUNCTIONPFP:31940
DescriptionECS004RM

This malfunction will not be detected while the O/D OFF indicator lamp is indicating another self-diagnosis
malfunction.

This malfunction is detected when the A/T does not shift into fourth gear position or line pressure is low as
instructed by the TCM. This is not caused by electrical malfunction (circuits open or shorted) but by
mechanical malfunction such as control valve sticking, improper solenoid valve operation, malfunctioning
oil pump or torque converter clutch, etc.
CONSULT-II REFERENCE VALUE IN DATA MONITOR MODE
Remarks: Specification data are reference values.
On Board Diagnosis LogicECS00CU1
This diagnosis monitors actual gear position by checking the torque converter slip ratio calculated by TCM as
follows:
Torque converter slip ratio = A x C/B
A: Output shaft revolution signal from revolution sensor
B: Engine speed signal from ECM
C: Gear ratio determined as gear position which TCM supposes
If the actual gear position is much lower than the position (4th) supposed by TCM, the slip ratio will be much
less than normal. In case the ratio does not reach the specified value, TCM judges this diagnosis malfunction.
This malfunction will be caused when shift solenoid valve A is stuck open or shift solenoid valve B is stuck
closed.
*: P0734 is detected.
And also, this malfunction will be caused when line pressure is lower than normal same as line pressure sole-
noid valve stuck open.
Gear position 1 2 3 4
Shift solenoid valve A ON (Closed) OFF (Open) OFF (Open) ON (Closed)
Shift solenoid valve B ON (Closed) ON (Closed) OFF (Open) OFF (Open)
Monitor item Condition Specification
Line pressure solenoid valve dutySmall throttle opening
(Low line pressure)
↓
Large throttle opening
(High line pressure)Approximately 24%
↓
Approximately 95%
Gear position supposed by TCM 1 2 3 4
In case of gear position with no malfunctions 1 2 34
In case of gear position with shift solenoid valve A stuck open 2 2 33*
In case of gear position with shift solenoid valve B stuck closed 1 2 21*
Diagnostic trouble code Malfunction is detected when... Check items (Possible cause)
: A/T 4TH GR FNCTN
A/T cannot be shifted to the 4th gear posi-
tion even if electrical circuit is good.

Shift solenoid valve A

Shift solenoid valve B

Line pressure solenoid valve

Each clutch

Hydraulic control circuit : P0734

DTC P0734 A/T 4TH GEAR FUNCTION
AT-141
[EURO-OBD]
D
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Possible CauseECS00CU2
Check the following items.

Shift solenoid valve A

Shift solenoid valve B

Line pressure solenoid valve

Each clutch

Hydraulic control circuit
DTC Confirmation ProcedureECS00CU3
CAUTION:

Always drive vehicle at a safe speed.

If conducting this “DTC Confirmation Procedure” again, always turn ignition switch “OFF” and
wait at least 5 seconds before continuing.

Be careful not to rev engine into the red zone on the tachometer.
NOTE:
If “DTC Confirmation Procedure” has been previously conducted, always turn ignition switch OFF and
wait at least 5 seconds before conducting the next test.
TESTING CONDITION:
Always drive vehicle on a level road to improve the accuracy of test.
After the repair, perform the following procedure to confirm the malfunction is eliminated.
WITH CONSULT-II
1. Start engine and select “DATA MONITOR” mode for “A/T” with
CONSULT-II.
2. Make sure that output voltage of A/T fluid temperature sensor is
within the range below.
FLUID TEMP SEN: 0.4 - 1.5V
If out of range, drive the vehicle to decrease the voltage (warm
up the fluid) or stop engine to increase the voltage (cool down
the fluid).
3. Select “4TH GR FNCTN P0734” of “DTC WORK SUPPORT”
mode for “A/T” with CONSULT-II and touch “START”.
4. Accelerate vehicle to 55 to 65 km/h (34 to 40 MPH) under the
following condition and release the accelerator pedal com-
pletely.
THROTTLE POSI: Less than 5.5/8 (at all times during step 4)
Selector lever: D position (OD “ON”)
–Check that “GEAR” shows “3” after releasing pedal.
5. Depress accelerator pedal steadily with 1.0/8 - 2.0/8 of “THROT-
TLE POSI” from a speed of 55 to 65 km/h (34 to 40 MPH) until
“TESTING” has turned to “STOP VEHICLE” or “COMPLETED”.
(It will take approximately 3 seconds.)
If the check result NG appears on CONSULT-II screen, go to AT-
144, "Diagnostic Procedure" .
If “STOP VEHICLE” appears on CONSULT-II screen, go to following step.
–Check that “GEAR” shows “4” when depressing accelerator pedal with 1.0/8 - 2.0/8 of “THROTTLE
POSI”.
SAT014K
SCIA5358E

AT-148
[EURO-OBD]
DTC P0740 TORQUE CONVERTER CLUTCH SOLENOID VALVE

DTC P0740 TORQUE CONVERTER CLUTCH SOLENOID VALVEPFP:31940
DescriptionECS004RQ
The torque converter clutch solenoid valve is activated, with the gear
in “D
4 ”, by the TCM in response to signals sent from the vehicle
speed and throttle position sensors. Lock-up piston operation will
then be controlled.
Lock-up operation, however, is prohibited when A/T fluid tempera-
ture is too low.
When the accelerator pedal is depressed (less than 2/8) in lock-up
condition, the engine speed should not change abruptly. If there is a
big jump in engine speed, there is no lock-up.
CONSULT-II REFERENCE VALUE IN DATA MONITOR MODE
Remarks: Specification data are reference values.
On Board Diagnosis LogicECS00CU4
Possible CauseECS00CU5
Check the following items.

Torque converter clutch solenoid valve

Harness or connector
(The solenoid circuit is open or shorted.)
DTC Confirmation ProcedureECS00CU6
CAUTION:

Always drive vehicle at a safe speed.

If performing this “DTC Confirmation Procedure” again, always turn ignition switch OFF and wait
at least 10 seconds before continuing.
NOTE:
If “DTC Confirmation Procedure” has been previously conducted, always turn ignition switch OFF and
wait at least 5 seconds before conducting the next test.
After the repair, perform the following procedure to confirm the malfunction is eliminated.
WITH CONSULT-II
1. Turn ignition switch ON. (Do not start engine.)
2. Select “DATA MONITOR” mode for “A/T” with CONSULT-II and
wait at least 1 second.
3. Start engine and maintain the following conditions for at least 5
consecutive seconds.
VHCL SPEED SE: 80 km/h (50 MPH) or more
THROTTLE POSI: 0.5/8 - 1.0/8
Selector lever: D position (OD ON)
Driving location: Driving the vehicle uphill (increased
engine load) will help maintain the driving conditions
required for this test.
4. If the check result is NG go to AT- 1 5 1 , "
Diagnostic Procedure" .
SCIA0718E
Monitor item Condition Specification
Torque converter clutch solenoid valve
dutyLock-up OFF
↓
Lock-up ONApproximately 4%
↓
Approximately 94%
Diagnostic trouble code Malfunction is detected when... Check items (Possible cause)
: T/C CLUTCH SOL/V
TCM detects an improper voltage drop
when it tries to operate the solenoid valve.

Harness or connectors
(The solenoid circuit is open or shorted.)

T/C clutch solenoid valve
: P0740
SAT014K

DTC P0740 TORQUE CONVERTER CLUTCH SOLENOID VALVE
AT-149
[EURO-OBD]
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WITH GST
Follow the procedure “WITH CONSULT-II”.
WITHOUT CONSULT-II
1. Start engine.
2. Drive vehicle in D
1 → D2 → D3 → D4 → D4 lock-up position.
3. Perform self-diagnosis.
Refer toAT- 5 2 , "
Diagnostic Procedure Without CONSULT-II" .
4. If the check result is NG, go to AT- 1 5 1 , "
Diagnostic Procedure" .
SCIA5597E