2005 NISSAN X-TRAIL Service Repair Manual

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Page 2409 of 4555

NISSAN X-TRAIL 2005 Service Repair Manual DTC P0734 A/T 4TH GEAR FUNCTION
AT-145
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3. CHECK SOLENOID VALVES
1. Remove control valve assembly. Refer to AT- 4 0 4 , "
Control Valve Assembly and Accumulators

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NISSAN X-TRAIL 2005 Service Repair Manual 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, sle

Page 2411 of 4555

NISSAN X-TRAIL 2005 Service Repair Manual DTC P0734 A/T 4TH GEAR FUNCTION
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9. CHECK CONTROL VALVE
1. Disassemble control valve assembly. Refer to AT- 4 4 8 , "
Control Valve Assembly" .
2. Check l

Page 2412 of 4555

NISSAN X-TRAIL 2005 Service Repair Manual 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 activat

AT-148
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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 (O/D 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

Page 2413 of 4555

NISSAN X-TRAIL 2005 Service Repair Manual DTC P0740 TORQUE CONVERTER CLUTCH SOLENOID VALVE
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WITH GST
Follow the procedure “WITH CONSULT-II”.
WITHOUT CONSULT-II
1. Start engine.
2. Drive vehic

Page 2414 of 4555

NISSAN X-TRAIL 2005 Service Repair Manual AT-150
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DTC P0740 TORQUE CONVERTER CLUTCH SOLENOID VALVE

Wiring Diagram — AT — TCVECS004RR
TCWA0043E

Page 2415 of 4555

NISSAN X-TRAIL 2005 Service Repair Manual DTC P0740 TORQUE CONVERTER CLUTCH SOLENOID VALVE
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TERMINALS AND REFERENCE VALUE MEASURED BETWEEN EACH TERMINAL
Diagnostic ProcedureECS004RS
1. CHECK INPUT

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NISSAN X-TRAIL 2005 Service Repair Manual AT-152
[EURO-OBD]
DTC P0740 TORQUE CONVERTER CLUTCH SOLENOID VALVE

2. CHECK TORQUE CONVERTER CLUTCH SOLENOID VALVE CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect TCM connector.
3. Check resistan

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