2003 NISSAN X-TRAIL Service Repair Manual

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Page 2169 of 4179

NISSAN X-TRAIL 2003 Service Repair Manual DTC P0732 A/T 2ND GEAR FUNCTION
AT-133
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TERMINALS AND REFERENCE VALUE MEASURED BETWEEN EACH TERMINAL
Diagnostic ProcedureECS004RG
1. CHECK SHIFT SOLENOID VALVE
1.

Page 2170 of 4179

NISSAN X-TRAIL 2003 Service Repair Manual AT-134
[EURO-OBD]
DTC P0732 A/T 2ND GEAR FUNCTION

4. CHECK DTC
Perform AT- 1 3 0 , "
DTC Confirmation Procedure" .
OK or NG
OK >>INSPECTION END
NG >> Check control valve again. Repair or replace co

Page 2171 of 4179

NISSAN X-TRAIL 2003 Service Repair Manual DTC P0733 A/T 3RD GEAR FUNCTION
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DTC P0733 A/T 3RD GEAR FUNCTIONPFP:31940
DescriptionECS004RI
This malfunction will not be detected while the O/D OFF indi

DTC P0733 A/T 3RD GEAR FUNCTION
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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

Page 2172 of 4179

NISSAN X-TRAIL 2003 Service Repair Manual AT-136
[EURO-OBD]
DTC P0733 A/T 3RD GEAR FUNCTION

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 tem

AT-136
[EURO-OBD]
DTC P0733 A/T 3RD GEAR FUNCTION

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”)
–Make sure 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 AT-
138, "Diagnostic Procedure" .
If “STOP VEHICLE” appears on CONSULT-II screen, go to following step.
–Make sure that “GEAR” shows “3” when depressing accelerator pedal with 3.5/8 - 4.5/8 of
“THROTTLE POSI”.
–If “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.)
8. Make sure that “OK” is displayed. (If “NG” is displayed, refer to Diagnostic Procedure.)
Refer to AT- 1 3 8 , "
Diagnostic Procedure" .
Refer to AT- 5 3 0 , "
Shift Schedule" .
WITH GST
Follow the procedure “With CONSULT-II”.
SAT014K
Vehicle conditionGear on actual transmission shift pattern when
screen is changed to 1 → 2 → 3 → 4
No malfunction exists. 1 → 2 → 3 → 4
Malfunction for P0733 exists. 1 → 1 → 4 → 4
SCIA5358E

Page 2173 of 4179

NISSAN X-TRAIL 2003 Service Repair Manual DTC P0733 A/T 3RD GEAR FUNCTION
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Wiring Diagram — AT — 3RDSIGECS004RJ
TCWA0051E

Page 2174 of 4179

NISSAN X-TRAIL 2003 Service Repair Manual AT-138
[EURO-OBD]
DTC P0733 A/T 3RD GEAR FUNCTION

TERMINALS AND REFERENCE VALUE MEASURED BETWEEN EACH TERMINAL
Diagnostic ProcedureECS004RK
1. CHECK SHIFT SOLENOID VALVE
1. Remove control valve asse

Page 2175 of 4179

NISSAN X-TRAIL 2003 Service Repair Manual DTC P0733 A/T 3RD GEAR FUNCTION
AT-139
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4. CHECK DTC
Perform AT- 1 3 5 , "
DTC Confirmation Procedure" .
OK or NG
OK >>INSPECTION END
NG >> Check control valve a

Page 2176 of 4179

NISSAN X-TRAIL 2003 Service Repair Manual 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 a

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

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