check engine NISSAN X-TRAIL 2003 Electronic Service Manual

DTC P0725 ENGINE SPEED SIGNAL
AT-149
[EURO-OBD]
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Diagnostic ProcedureECS0 04 R9
1.CHECK DTC WITH ECM
Perform diagnostic test mode II (self- diagnostic results) for engine control. Check ignition signal circuit condi-
tion.
OK or NG
OK (With CONSULT-II)>>GOTO2
OK (Without CONSULT-II)>>GOTO3
NG >> Check ignition signal circuit for engine control. Refer toEC-334, "
IGNITION SIGNAL",“IGNITION
SIGNAL”.
2.CHECK INPUT SIGNAL (WITH CONSULT-II)
With CONSULT-II
1. Start engine.
2. Select “TCM INPUT SIGNALS” in “DATA MONITOR” mode for
“A/T” with CONSULT-II.
3. Read out the value of “ENGINE SPEED”.
Check engine speed changes according to throttle position.
OK or NG
OK >> GOTO4
NG >> Check the following items:
lHarness for short or open between TCM and ECM
lResistor and ignition coil Refer toEC-334, "IGNITION
SIGNAL", “IGNITION SIGNAL”.
3.CHECK INPUT SIGNAL (WITHOUT CONSULT-II)
Without CONSULT-II
1. Start engine.
2. Check voltage between TCM terminal 39 and ground.
OK or NG
OK >> GOTO4
NG >> Check the following items:
lHarness for short or open between TCM and ECM
lResistor and ignition coilEC-334, "IGNITION SIG-
NAL", “IGNITION SIGNAL”.
SAT014K
SAT645J
Voltage (Idle speed) : Refer toEC-30, "Idle Speed and
Ignition Timing Check","Idle
Speed and Ignition Timing".
SCIA0740E

AT-150
[EURO-OBD]
DTC P0725 ENGINE SPEED SIGNAL
4.CHECK DTC
Perform Diagnostic Trouble Code (DTC) confirmation procedure,AT-147, "
DTC P0725 ENGINE SPEED SIG-
NAL".
OK or NG
OK >>INSPECTION END
NG >> 1. Perform TCM input/output signal inspection.
2. If NG, recheck TCM pin terminals for damage or loose connection with harness connector.

DTC P0731 A/T 1ST GEAR FUNCTION
AT-151
[EURO-OBD]
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DTC P0731 A/T 1ST GEAR FUNCTIONPFP:31940
DescriptionECS004RA
lThis is an OBD-II self-diagnostic item and not available in TCM self-diagnosis.
lThis malfunction will not be detected while the O/D OFF indicator lamp is indicating another self-diagnosis
malfunction.
lThis 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.
TCM TERMINALS AND REFERENCE VALUE
Remarks: Specification data are reference values.
ON BOARD DIAGNOSTIC LOGIC
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.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)
Te r m i -
nal No.Wire color Item ConditionJudgement stan-
dard
(Approx.)
11 L / WShift solenoid
valve AWhen shift solenoid valve A oper-
ates.
(When driving in “D
1”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
GearpositionsupposedbyTCM 1234
Incaseofgearpositionwithnomalfunctions 1234
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/T1STGRFNCTN
A/T cannot be shifted to the 1st gear posi-
tion even if electrical circuit is good.
lShift solenoid valve A
lShift solenoid valve B
lEach clutch
lHydraulic control circuit : P0731

AT-152
[EURO-OBD]
DTC P0731 A/T 1ST GEAR FUNCTION
DIAGNOSTIC TROUBLE CODE (DTC) CONFIRMATION
PROCEDURE
CAUTION:
lAlways drive vehicle at a safe speed.
lBe careful not to rev engine into the red zone on the tachometer.
NOTE:
If “DIAGNOSTIC TROUBLE CODE 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 “1ST GR FNCTN P0731” of “DTC WORK SUPPORT”
mode for “A/T” with CONSULT-II and touch “START”.
4. Accelerate vehicle to 15 to 20 km/h (9 to 12 MPH) under the fol-
lowing condition and release the accelerator pedal completely.
THROTTLE POSI: Less than 1.0/8 (at all times during step 4)
Selector lever: D position (OD “ON”)
lCheck that “GEAR” shows “2” after releasing pedal.
5. Depress accelerator pedal to WOT (more than 7.0/8 of “THROT-
TLE POSI”) quickly from a speed of 15 to 20 km/h (9 to 12 MPH)
until “TESTING” changes to “STOP VEHICLE” or “COM-
PLETED”. (It will take approximately 3 seconds.)
If the check result NG appears on CONSULT-II screen, go to
“DIAGNOSTIC PROCEDURE”,AT-155, "
Diagnostic Procedure".
If “STOP VEHICLE” appears on CONSULT-II screen, go to the following step.
lCheck that “GEAR” shows “1” when depressing accelerator pedal to WOT.
lIf “TESTING” does not appear on CONSULT-II for a long time, select “SELF-DIAGNOSIS” for
“ENGINE”. In case a 1st trip DTC other than P0731 is shown, refer to applicable “TROUBLE DIAG-
NOSIS FOR DTC”.
SAT014K
SAT971J
SAT021J

AT-158
[EURO-OBD]
DTCP0732A/T2NDGEARFUNCTION
DTC P0732 A/T 2ND GEAR FUNCTION
PFP:31940
DescriptionECS004RE
lThis is an OBD-II self-diagnostic item and not available in TCM self-diagnosis.
lThis malfunction will not be detected while the O/D OFF indicator lamp is indicating another self-diagnosis
malfunction.
lThis 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.
TCM TERMINALS AND REFERENCE VALUE
Remarks: Specification data are reference values.
ON BOARD DIAGNOSTIC LOGIC
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.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)
Te r m i -
nal No.Wire color Item ConditionJudgement stan-
dard
(Approx.)
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
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/T2NDGRFNCTN
A/T cannot be shifted to the 2nd gear
position even if electrical circuit is good.
lShift solenoid valve B
lEach clutch
lHydraulic control circuit : P0732

DTC P0732 A/T 2ND GEAR FUNCTION
AT-159
[EURO-OBD]
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DIAGNOSTIC TROUBLE CODE (DTC) CONFIRMATION PROCEDURE
CAUTION:
lAlways drive vehicle at a safe speed.
lBe careful not to rev engine into the red zone on the
tachometer.
NOTE:
If “DIAGNOSTIC TROUBLE CODE CONFIRMATION PROCE-
DURE” 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 mal-
function 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 “2ND GR FNCTN P0732” of “DTC WORK SUPPORT”
mode for “A/T” with CONSULT-II and touch “START”.
4. Accelerate vehicle to 35 to 40 km/h (22 to 25 MPH) under the
following condition and release the accelerator pedal com-
pletely.
THROTTLE POSI: Less than 1.0/8 (at all times during step 4)
Selector lever: D position (OD “ON”)
lCheck that “GEAR” shows “3” or “4” after releasing pedal.
5. Depress accelerator pedal to WOT (more than 7.0/8 of “THROT-
TLE POSI”) quickly from a speed of 35 to 40 km/h (22 to 25
MPH) until “TESTING” changes to “STOP VEHICLE” or “COM-
PLETED”. (It will take approximately 3 seconds.)
If the check result NG appears on CONSULT-II screen, go to “DIAGNOSTIC PROCEDURE”,AT-162,
"Diagnostic Procedure".
If “STOP VEHICLE” appears on CONSULT-II screen, go to following step.
lCheck that “GEAR” shows “2” when depressing accelerator pedal to WOT.
lIf “TESTING” does not appear on CONSULT-II for a long time, select “SELF-DIAGNOSIS” for
“ENGINE”. In case a 1st trip DTC other than P0732 is shown, refer to applicable “TROUBLE DIAG-
NOSIS FOR DTC”.
6. Stop vehicle.
7. Follow the instruction displayed. (Check for normal shifting referring to the table below.)
SAT014K
SAT971J
SAT021J

DTC P0733 A/T 3RD GEAR FUNCTION
AT-165
[EURO-OBD]
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DTC P0733 A/T 3RD GEAR FUNCTIONPFP:31940
DescriptionECS004RI
lThis is an OBD-II self-diagnostic item and not available in TCM self-diagnosis.
lThis malfunction will not be detected while the O/D OFF indicator lamp is indicating another self-diagnosis
malfunction.
lThis 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.
TCM TERMINALS AND REFERENCE VALUE
Remarks: Specification data are reference values.
ON BOARD DIAGNOSTIC LOGIC
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.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)
Te r m i -
nal No.Wire color Item ConditionJudgement stan-
dard
(Approx.)
11 L / WShift solenoid
valve AWhen shift solenoid valve A oper-
ates.
(When driving in “D
1”or“D4”.)Battery voltage
When shift solenoid valve A does not
operate.
(When driving in “D
2”or“D3”.)0V
GearpositionsupposedbyTCM 1234
Incaseofgearpositionwithnomalfunctions 1234
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/T3RDGRFNCTN
A/T cannot be shifted to the 3rd gear posi-
tion even if electrical circuit is good.
lShift solenoid valve A
lEach clutch
lHydraulic control circuit : P0733

AT-166
[EURO-OBD]
DTCP0733A/T3RDGEARFUNCTION
DIAGNOSTIC TROUBLE CODE (DTC) CONFIRMATION PROCEDURE
CAUTION:
lAlways drive vehicle at a safe speed.
lBe careful not to rev engine into the red zone on the
tachometer.
NOTE:
If “DIAGNOSTIC TROUBLE CODE CONFIRMATION PROCE-
DURE” 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 mal-
function 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 “3RD GR FNCTN P0733” of “DTC WORK SUPPORT”
mode for “A/T” with CONSULT-II and touch “START”.
4. Accelerate vehicle to 55 to 70 km/h (34 to 44 MPH) under the
following condition and release the accelerator pedal com-
pletely.
THROTTLE POSI: Less than 1.0/8 (at all times during step 4)
Selector lever: D position (OD “ON”)
lCheck that “GEAR” shows “4” after releasing pedal.
5. Depress accelerator pedal steadily with 3.5/8 - 4.5/8 of “THROT-
TLE POSI” from a speed of 55 to 70 km/h (34 to 44 MPH) until
“TESTING” changes to “STOP VEHICLE” or “COMPLETED”. (It
will take approximately 3 seconds.)
If the check result NG appears on CONSULT-II screen, go to “DIAGNOSTIC PROCEDURE”,AT-169,
"Diagnostic Procedure".
If “STOP VEHICLE” appears on CONSULT-II screen, go to following step.
lCheck that “GEAR” shows “3” when depressing accelerator pedal with 3.5/8 - 4.5/8 of “THROTTLE
POSI”.
lIf “TESTING” does not appear on CONSULT-II for a long time, select “SELF-DIAGNOSIS” for
“ENGINE”. In case a 1st trip DTC other than P0733 is shown, refer to applicable “TROUBLE DIAG-
NOSIS FOR DTC”.
6. Stop vehicle.
7. Follow the instruction displayed. (Check for normal shifting referring to the table below.)
SAT014K
SAT971J
SAT021J

AT-172
[EURO-OBD]
DTC P0734 A/T 4TH GEAR FUNCTION
DTC P0734 A/T 4TH GEAR FUNCTION
PFP:31940
DescriptionECS0 04 RM
lThis is an OBD-II self-diagnostic item and not available in TCM self-diagnosis.
lThis malfunction will not be detected while the O/D OFF indicator lamp is indicating another self-diagnosis
malfunction.
lThis malfunction is detected when the A/T does not shift into fourth gear position or the torque converter
clutch does not lock up 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.
TCM TERMINALS AND REFERENCE VALUE
Remarks: Specification data are reference values.
ON BOARD DIAGNOSTIC LOGIC
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
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%
Te r m i -
nal No.Wire color Item ConditionJudgement stan-
dard
(Approx.)
1R/WLine pressure
solenoid valveWhen releasing accelerator pedal
after warming up engine.1.5 - 3.0V
When depressing accelerator pedal
fully after warming up engine.0V
2P/BLine pressure
solenoid valve
(with dropping
resistor)When releasing accelerator pedal
after warming up engine.5 - 14V
When depressing accelerator pedal
fully after warming up engine.0V
11 L /WShift solenoid
valve AWhen shift solenoid valve A oper-
ates.
(When driving in “D
1”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

DTC P0734 A/T 4TH GEAR FUNCTION
AT-173
[EURO-OBD]
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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 B is stuck closed.
*: P0734 is detected.
DIAGNOSTIC TROUBLE CODE (DTC) CONFIRMATION PROCEDURE
CAUTION:
lAlways drive vehicle at a safe speed.
lIf conducting this “DTC CONFIRMATION PROCEDURE”
again, always turn ignition switch “OFF” and wait at least 5
seconds before continuing.
lBe careful not to rev engine into the red zone on the
tachometer.
NOTE:
If “DIAGNOSTIC TROUBLE CODE CONFIRMATION PROCE-
DURE” 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 mal-
function 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).
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 closed 1 2 2 1*
Diagnostic trouble code Malfunction is detected when ... Check items (Possible cause)
:A/T4THGRFNCTN
A/T cannot be shifted to the 4th gear posi-
tion even if electrical circuit is good.
lShift solenoid valve A
lShift solenoid valve B
lLine pressure solenoid valve
lEach clutch
lHydraulic control circuit : P0734
SAT014K
SAT971J