2005 NISSAN X-TRAIL gear shift

AT-146
[EURO-OBD]
DTC P0734 A/T 4TH GEAR FUNCTION

5. CHECK CONTROL VALVE
1. Disassemble control valve assembly. Refer to AT- 4 4 8 , "
Control Valve Assembly" .
2. Check to ensure that:

Valve, sleeve and plug slide along valve bore under their own weight.

Valve, sleeve and plug are free from burrs, dents and scratches.

Control valve springs are free from damage, deformation and fatigue.

Hydraulic line is free from obstacles.
OK or NG
OK >> GO TO 6.
NG >> Repair control valve.
6. CHECK SHIFT UP (D3 TO D4 )
During AT- 7 8 , "
Cruise Test — Part 1" .
Does A/T shift from D
3 to D4 at the specified speed?
YES >> GO TO 11.
NO >> Check control valve again.Repair or replace control
valve assembly.
7. CHECK VALVE RESISTANCE
1. Remove control valve assembly. Refer to AT- 4 0 4 , "
Control Valve Assembly and Accumulators" .
–Line pressure solenoid valves
2. Check resistance between terminal cord assembly harness con-
nector terminal and ground.
OK or NG
OK >> GO TO 8.
NG >> Replace solenoid valve assembly.
8. CHECK VALVE OPERATION
1. Remove control valve assembly. Refer to AT- 4 0 4 , "
Control Valve Assembly and Accumulators" .
–Line pressure solenoid valves
2. Check solenoid valve by listening for its operating sound while
applying battery voltage to the terminal and ground.
OK or NG
OK >> GO TO 9.
NG >> Replace solenoid valve assembly.
SAT988H
Solenoid valve Terminal No.Resistance
(Approx.)
Line pressure solenoid valve 4 Ground 2.5 - 5Ω
SCIA3457E
SCIA3275E

DTC P0734 A/T 4TH GEAR FUNCTION
AT-147
[EURO-OBD]
D
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9. CHECK CONTROL VALVE
1. Disassemble control valve assembly. Refer to AT- 4 4 8 , "
Control Valve Assembly" .
2. Check line pressure circuit valves for sticking.
–Pilot valve
–Shift solenoid valve A
–Shift solenoid valve B
OK or NG
OK >> GO TO 10.
NG >> Repair control valve.
10. CHECK SHIFT UP (D3 TO D4 )
During AT- 7 8 , "
Cruise Test — Part 1" .
Does A/T shift from D
3 to D4 at the specified speed?
YES >> GO TO 11.
NO >> Check control valve again. Repair or replace control
valve assembly.
11 . CHECK DTC
Perform AT- 1 4 1 , "
DTC Confirmation Procedure" .
OK or NG
OK >>INSPECTION END
NG >> Perform AT- 7 8 , "
Cruise Test — Part 1" again and return to the start point of this test group.
SAT988H

DTC P0750 SHIFT SOLENOID VALVE A
AT-161
[EURO-OBD]
D
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B
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DTC P0750 SHIFT SOLENOID VALVE APFP:31940
DescriptionECS004RY
Shift solenoid valves A and B are turned ON or OFF by the TCM in
response to signals sent from the PNP switch, vehicle speed and
throttle position sensors. Gears will then be shifted to the optimum
position.
CONSULT-II REFERENCE VALUE IN DATE MONITOR MODE
Remarks: Specification data are reference values.
On Board Diagnosis LogicECS00CUA
Possible CauseECS00CUB
Check the following items.

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

Shift solenoid valve A
DTC Confirmation ProcedureECS00CUC
CAUTION:
Always drive vehicle at a safe speed.
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.
SCIA0718E
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 Display value
SHIFT S/V A (ON/OFF)When shift solenoid valve A operates.
(When driving in D
1 or D4 .)ON
When shift solenoid valve A does not operate.
(When driving in D
2 or D3 .)OFF
Diagnostic trouble code Malfunction is detected when... Check items (Possible cause)
: SHIFT SOLENOID/V A
TCM detects an improper voltage drop
when it tries to operate the solenoid valve.

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

Shift solenoid valve A
: P0750

AT-162
[EURO-OBD]
DTC P0750 SHIFT SOLENOID VALVE A

WITH CONSULT-II
1. Turn ignition switch ON and select “DATA MONITOR” mode for
“A/T” with CONSULT-II.
2. Start engine.
3. Drive vehicle in D position and allow the transaxle to shift “1” →
“2” (“GEAR”).
4. If the check result is NG, go to AT- 1 6 4 , "
Diagnostic Procedure" .
WITH GST
Follow the procedure “WITH CONSULT-II”.
WITHOUT CONSULT-II
1. Start engine.
2. Drive vehicle in D
1 → D2 position.
3. Perform safe-diagnosis.
Refer to AT- 5 2 , "
Diagnostic Procedure Without CONSULT-II" .
4. If the check result is NG, go to AT- 1 6 4 , "
Diagnostic Procedure" .
SAT014K
SCIA5358E
SCIA5594E

DTC P0755 SHIFT SOLENOID VALVE B
AT-167
[EURO-OBD]
D
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DTC P0755 SHIFT SOLENOID VALVE BPFP:31940
DescriptionECS004S2
Shift solenoid valves A and B are turned ON or OFF by the TCM in
response to signals sent from the PNP switch, vehicle speed and
throttle position sensors. Gears will then be shifted to the optimum
position.
CONSULT-II REFERENCE VALUE IN DATA MONITOR MODE
Remarks: Specification data are reference values.
On Board Diagnosis LogicECS00CUD
Possible CauseECS00CUE
Check the following items.

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

Shift solenoid valve B
DTC Confirmation ProcedureECS00CUF
CAUTION:
Always drive vehicle at a safe speed.
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.
SCIA0718E
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 Display value
SHIFT S/V B (ON/OFF)When shift solenoid valve B operates.
(When driving in D
1 or D2 .)ON
When shift solenoid valve B does not operate.
(When driving in D
3 or D4 .)OFF
Diagnostic trouble code Malfunction is detected when... Check items (Possible cause)
: SHIFT SOLENOID/V B
TCM detects an improper voltage drop
when it tries to operate the solenoid valve.

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

Shift solenoid valve B
: P0755

AT-168
[EURO-OBD]
DTC P0755 SHIFT SOLENOID VALVE B

WITH CONSULT-II
1. Turn ignition switch ON and select “DATA MONITOR” mode for
“A/T” with CONSULT-II.
2. Start engine.
3. Drive vehicle in D position and allow the transaxle to shift 1 → 2
→ 3 (“GEAR”).
4. If the check result is NG, go to AT- 1 7 0 , "
Diagnostic Procedure" .
WITH GST
Follow the procedure “WITH CONSULT-II”.
WITHOUT CONSULT-II
1. Start engine.
2. Drive vehicle in D → D
2 → D3 position.
3. Perform self-diagnosis.
Refer to AT- 5 2 , "
Diagnostic Procedure Without CONSULT-II" .
4. If the check result is NG, go to AT- 1 7 0 , "
Diagnostic Procedure" .
SAT014K
SCIA5358E
SCIA5595E

AT-242
[EXC.F/EURO-OBD]
ON BOARD DIAGNOSTIC SYSTEM DESCRIPTION

[EXC.F/EURO-OBD]ON BOARD DIAGNOSTIC SYSTEM DESCRIPTIONPFP:00000
CONSULT-IIECS004NW
After performing AT- 2 4 2 , "SELF-DIAGNOSTIC PROCEDURE (WITH CONSULT-II)" , place check marks for
results on the AT- 2 5 2 , "
DIAGNOSTIC WORKSHEET" . 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
SELF-DIAGNOSTIC PROCEDURE (WITH CONSULT-II)
1. Turn on CONSULT-II and touch “A/T” for TCM self-diagnosis.
If A/T is not displayed, check TCM power supply and ground cir-
cuit. Refer to AT- 2 8 6 , "
TCM Terminals and Reference Value" . If
result is NG, refer to PG-2, "
POWER SUPPLY ROUTING" .
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- 2 4 2
Data monitor Input/Output data in the ECM can be read.AT- 2 4 4
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. —
SAT014K

TROUBLE DIAGNOSIS — BASIC INSPECTION
AT-271
[EXC.F/EURO-OBD]
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2. CHECK SHIFT UP (D1 TO D2 )
Check shift-up (D
1 to D2 ).
Specified speed when shifting from D
1 to D2. Refer to AT- 5 3 0 , "VEHICLE SPEED WHEN SHIFTING GEARS
AND THROTTLE POSITION" .
Read gear position, throttle opening and vehicle speed.
Refer to AT- 2 4 4 , "
DATA MONITOR MODE (A/T)" .
Does A/T shift from D
1 to D2 at the specified speed?
YES >> GO TO 3.
NO >>

Mark the box on the DIAGNOSTIC WORKSHEET.

GO TO AT- 3 0 4 , "A/T Does Not Shift: D1 → D2 Or
Does Not Kickdown: D4 → D2" .

Continue “Road Test”.
3. CHECK SHIFT UP (D2 TO D3 )
Check shift-up (D
2 to D3 ).
Specified speed when shifting from D
2 to D3. Refer to AT- 5 3 0 , "VEHICLE SPEED WHEN SHIFTING GEARS
AND THROTTLE POSITION" .
Read gear position, throttle opening and vehicle speed.
Refer to AT- 2 4 4 , "
DATA MONITOR MODE (A/T)" .
Does A/T shift from D
2 to D3 at the specified speed?
YES >> GO TO 4.
NO >>

Mark the box on the DIAGNOSTIC WORKSHEET.

GO TO AT- 3 0 7 , "A/T Does Not Shift: D2 → D3" .

Continue “Road Test”.
4. CHECK SHIFT UP (D3 TO D4 )
Check shift-up (D
3 to D4 ).
Specified speed when shifting from D
3 to D4. Refer to AT- 5 3 0 , "VEHICLE SPEED WHEN SHIFTING GEARS
AND THROTTLE POSITION" .
Read gear position, throttle opening and vehicle speed.
Refer to AT- 2 4 4 , "
DATA MONITOR MODE (A/T)" .
Does A/T shift from D
3 to D4 at the specified speed?
YES >> GO TO 5.
NO >>

Mark the box on the DIAGNOSTIC WORKSHEET.

GO TO AT- 3 0 9 , "A/T Does Not Shift: D3 → D4" .

Continue “Road Test”.
SAT954I
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