2003 NISSAN X-TRAIL ACCELERATOR PEDAL PEDAL POSITION SENSOR

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 P1705 ACCELERATOR PEDAL POSITION (APP) SENSOR
AT-173
[EURO-OBD]
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DTC P1705 ACCELERATOR PEDAL POSITION (APP) SENSORPFP:22620
DescriptionECS004S6

Accelerator pedal position (APP) sensor
Electric throttle control actuator consists of throttle control motor,
acceleration pedal position sensor, throttle position sensor, etc.
The actuator sends a signal to the TCM.
CONSULT-II REFERENCE VALUE IN DATA MONITOR MODE
Remarks: Specification data are reference values.
On Board Diagnosis LogicECS00CUG
Possible CauseECS00CUH
Harness or connector
(The sensor circuit is open shorted.)
DTC Confirmation ProcedureECS00CUI
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.
WITH CONSULT-II
1. Turn ignition switch ON and select “DATA MONITOR” mode for
“A/T” with CONSULT-II.
2. Check the following.
If the check result is NG, go to AT- 1 7 6 , "
Diagnostic Procedure" .
If the check result is OK, go to following step.
PBIB0498E
Monitor item Condition Specification
Accelerator pedal position (APP) sensor
(THRTL POS SEN)Fully-closed throttle Approximately 0.5V
Fully-open throttle Approximately 4V
Diagnostic trouble code Malfunction is detected when... Check items (Possible cause)
: THROTTLE POSI SEN
TCM receives an excessively low or high
voltage from the sensor.

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

Accelerator pedal position (APP) sensor
: P1705
Accelerator pedal condition THRTL POS SEN
Fully released Less than 4.7V
Partially depressed 0.1 - 4.6V
Fully depressed 1.9 - 4.6V
SAT014K

AT-174
[EURO-OBD]
DTC P1705 ACCELERATOR PEDAL POSITION (APP) SENSOR

3. Turn ignition switch ON and select “DATA MONITOR” mode for
“A/T” with CONSULT-II.
4. Start engine and maintain the following conditions for at least 3
consecutive seconds. Then release accelerator pedal com-
pletely.
VHCL SPEED SE: 10 km/h (6 MPH) or more
THRTL POS SEN: Approximately 3V or less
Selector lever: D position (OD ON)
If the check result is NG, go to AT- 1 7 6 , "
Diagnostic Procedure" .
If the check result is OK, go to following step.
5. Maintain the following conditions for at least 3 consecutive sec-
onds. Then release accelerator pedal completely.
VHCL SPEED SE: 10 km/h (6 MPH) or more
Accelerator pedal: Wide open throttle
Selector lever: D position (OD ON)
WITH GST
Follow the procedure “WITH CONSULT-II”.
WITHOUT CONSULT-II
1. Start engine.
2. Drive vehicle under the following conditions for more than 3 sec-
onds.
Selector lever position: D position
Vehicle speed: 10km/h (6MPH) or more
Throttle position: greater than 4.0/8 of the full throttle posi-
tion
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 6 , "
Diagnostic Procedure" .
SCIA5358E
SCIA5593E

DTC P1705 ACCELERATOR PEDAL POSITION (APP) SENSOR
AT-175
[EURO-OBD]
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Wiring Diagram — AT — TPSECS004S7
TCWA0233E

AT-176
[EURO-OBD]
DTC P1705 ACCELERATOR PEDAL POSITION (APP) SENSOR

TERMINALS AND REFERENCE VALUE MEASURED BETWEEN EACH TERMINAL
Diagnostic ProcedureECS004S8
1. CHECK DTC WITH ECM
Perform diagnostic test mode II (self-diagnostic results) for engine control.
Refer to EC-64, "
Malfunction Indicator (MI)" .
OK or NG
OK (With CONSULT-II)>>GO TO 2.
OK (Without CONSULT-II)>>GO TO 3.
NG >> Check throttle position sensor circuit for engine control.
Te r m i -
nal No.Wire color Item ConditionJudgement standard
(Approx.)
32 RAccelerator pedal
position (APP)
sensor
(Power source)orWhen turning ignition switch ON 4.5 - 5.5V
When turning ignition switch OFF 0V
41 G/YAccelerator pedal
position (APP)
sensorWhen depressing accelerator pedal
slowly after warming up engine.
(Voltage rises gradually in response
to throttle position.)Fully-closed throttle:
0.5V
Fully-open throttle:
4V
42 B Sensor ground Always 0V

DTC P1705 ACCELERATOR PEDAL POSITION (APP) SENSOR
AT-177
[EURO-OBD]
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2. CHECK INPUT SIGNAL
With CONSULT-II
1. Turn ignition switch ON. (Do not start engine.)
2. Select “TCM INPUT SIGNALS” in “DATA MONITOR” mode for “A/T” with CONSULT-II.
3. Read out the value of “THRTL POS SEN”.
Without CONSULT-II
1. Turn ignition switch ON. (Do not start engine.)
2. Check voltage between TCM connector terminals.
OK or NG
OK >> GO TO 3.
NG >> Check harness for short or open between ECM and TCM regarding accelerator pedal position
sensor circuit.
3. CHECK DTC
Perform AT- 1 7 3 , "
DTC Confirmation Procedure" .
OK or NG
OK >>INSPECTION END
NG >> GO TO 4.
4. CHECK TCM
1. Check TCM input/output signal. Refer to AT- 9 4 , "
TCM Terminals and Reference Value" .
2. If NG, recheck TCM pin terminals for damage or loose connection with harness connector.
OK or NG
OK >>INSPECTION END
NG >> Repair or replace damaged parts.
Monitor item Condition Display value
THRTL POS SEN (V)When depressing accel-
erator pedal slowly after
warming up engine.
(Voltage rises gradually in
response to throttle posi-
tion.)Fully-closed throttle: 0.8V
Fully-open throttle: 4.4V
LCIA0090E
Name Connec-
tor No. Terminal
No. (Wire
color) ConditionJudge-
mentstan-
dard(Appro
x.)
Accelerator
pedal posi-
tion (APP)
sensor F47 41 (G/Y) -
42 (B)When depressing accel-
erator pedal slowly after
warming up engine.
(Voltage rises gradually
in response to throttle
position.)Fully-
closed
throttle:
0.8V
Fully-open
throttle:
4.4V
SCIA3247E

AT-178
[EURO-OBD]
DTC P1760 OVERRUN CLUTCH SOLENOID VALVE

DTC P1760 OVERRUN CLUTCH SOLENOID VALVEPFP:31940
DescriptionECS004S9
The overrun clutch solenoid valve is activated by the TCM in
response to signals sent from the park/neutral position (PNP) switch,
overdrive control switch, vehicle speed and throttle position sensors.
The overrun clutch operation will then be controlled.
On Board Diagnosis LogicECS00CUJ
Possible CauseECS00CUK
Check the following items.

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

Overrun clutch solenoid valve
DTC Confirmation ProcedureECS00CUL
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.
TESTING CONDITION:
Always drive vehicle on a level road to improve accuracy of test.
After the repair, perform the following procedure to confirm the malfunction is eliminated.
WITH CONSULT-II
1. Turn ignition switch ON and select “DATA MONITOR” mode for
“A/T” with CONSULT-II.
2. Start engine.
3. Accelerate vehicle to a speed of more than 10 km/h (6 MPH)
with “D” position (OD ON).
4. Release accelerator pedal completely with D position (OD OFF).
WITH GST
Follow the procedure “WITH CONSULT-II”.
SCIA0718E
Diagnostic trouble code Malfunction is detected when... Check items (Possible cause)
: OVERRUN CLUTCH S/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.)

Overrun clutch solenoid valve
: P1760
SAT014K

TROUBLE DIAGNOSES FOR SYMPTOMS
AT-209
[EURO-OBD]
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Large Shock. “N” → “R” PositionECS004SY
SYMPTOM:
There is large shock when changing from “N” to “R” position.
1. CHECK SELF-DIAGNOSTIC RESULTS
Perform self-diagnosis. Refer to AT- 4 5 , "
SELF-DIAGNOSTIC PROCEDURE (WITH CONSULT-II)" or AT- 5 2 ,
"Diagnostic Procedure Without CONSULT-II" .
Do the self-diagnosis results indicate A/T fluid temperature sensor, line pressure solenoid valve, accelerator
pedal position (APP) sensor circuit?
YES >>
Check damaged circuit. Refer to the following items.
–AT- 1 5 4 , "DTC P0745 LINE PRESSURE SOLENOID VALVE"
–AT- 1 7 3 , "DTC P1705 ACCELERATOR PEDAL POSITION (APP) SENSOR"
– AT- 1 8 4 , "DTC BATT/FLUID TEMP SEN (A/T FLUID TEMP SENSOR CIRCUIT AND TCM
POWER SOURCE)"
NO >> GO TO 2
2. CHECK LINE PRESSURE
Check line pressure at idle with selector lever in D position. Refer to
AT- 6 8 , "
Line Pressure Test" .
OK or NG
OK >> GO TO 3.
NG >> 1. Remove control valve assembly. Refer to AT- 4 0 4 ,
"Control Valve Assembly and Accumulators" .
2. Check the following items:
–Valves to control line pressure (Pressure regulator
valve, pressure modifier valve, pilot valve and pilot fil-
ter)
–Line pressure solenoid valve
–Oil pump assembly. Refer to AT- 4 4 3 , "Oil Pump" .
3. CHECK SYMPTOM
Check again. Refer to AT- 7 2 , "
2. CHECK AT IDLE" .
OK or NG
OK >>INSPECTION END
NG >> 1. Perform TCM input/output signal inspection. Refer to AT- 9 4 , "
TCM Terminals and Reference
Va l u e" .
2. If NG, recheck TCM pin terminals for damage or loose connection with harness connector.
SAT494G