NISSAN X-TRAIL 2003 Service Repair Manual

ACCELE RATOR PEDAL POSITION (APP) SENSOR
AT-345
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ACCELE RATOR PEDAL POSITION (APP) SENSORPFP:22620
DescriptionECS004TP

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 ECM.
CONSULT-II REFERENCE VALUE
Remarks: Specification data are reference values.
On Board Diagnosis LogicECS00CSD
*:This code means Accelerator pedal position (APP) sensor in reality.
Possible CauseECS00CSE
Harness or connector
(The sensor circuit is open or shorted.)
DTC Confirmation ProcedureECS00CSF
After the repair, perform the following procedure to confirm the malfunction is eliminated.
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 performed, always turn ignition switch OFF and wait at
least 10 seconds before performing 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. Touch “TCM INPUT SIGNALS”.
3. Touch “START”
If the check result is NG, go to AT- 3 4 8 , "
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
: 3rd judgement flicker
Accelerator pedal condition THRTL POS SEN
Fully released Approx. 0.5V
Partially depressed 0.5 - 4V
Fully depressed Approx. 4V
SAT014K

AT-346
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ACCELE RATOR PEDAL POSITION (APP) SENSOR

4. Turn ignition switch ON and select “DATA MONITOR” mode for
“A/T” with CONSULT-II.
5. Touch “SELECTION FROM MENU”
6. Touch “VHCL SPEED SE” and “THRTL POS SEN”.
Touch “START”.
7. 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
SLCT LVR POSI: D position
If the check result is NG, go to AT- 3 4 8 , "
Diagnostic Procedure" .
If the check result is OK, go to following step.
8. 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
THROTTLE POSI: 8.0/8
SLCT LVR POSI: D position
WITHOUT CONSULT-II
1. Start engine.
2. Drive vehicle under the following conditions for more than 3 seconds.
Selector lever position: D position
Vehicle speed: 10 km/h (6 MPH) or more
Throttle position: greater than 4.0/8 of the full throttle 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- 3 4 8 , "
Diagnostic Procedure" .
SCIA5358E
SAT014K
SCIA5593E

ACCELE RATOR PEDAL POSITION (APP) SENSOR
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Wiring Diagram — AT — TPSECS004TQ
TCWA0233E

AT-348
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ACCELE RATOR PEDAL POSITION (APP) SENSOR

TERMINALS AND REFERENCE VALUE MEASURED BETWEEN EACH TERMINAL
Diagnostic ProcedureECS00CSG
1. CHECK DTC WITH ECM

Check P code with CONSULT-II “ENGINE”.
Turn ignition switch ON and select “SELF DIAGNOSTIC RESULTS” mode for “ENGINE” with CONSULT-II.
Refer to EC-64, "
Malfunction Indicator (MI)" (WITH EURO-OBD) or EC-516, "Malfunction Indicator (MI)"
(WITHOUT EURO-OBD).
OK or NG
OK >> GO TO 2.
NG >> Check accelerator pedal position (APP) sensor circuit for engine control. Refer to EC-386, "
DTC
P2122, P2123 APP SENSOR" , EC-393, "DTC P2127, P2128 APP SENSOR" , EC-409, "DTC
P2138 APP SENSOR" . If CAN communication line is detected, GO TO LAN-4, "CAN COMMUNI-
CATION" .
Termi-
nal No.Wire color Item ConditionJudgement stan-
dard
(Approx.)
32 RThrottle position
sensor
(Power source)
or When turning ignition switch “ON”. 4.5 - 5.5V
When turning ignition switch “OFF”. 0V
41 G/YThrottle position
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

ACCELE RATOR PEDAL POSITION (APP) SENSOR
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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 throttle position sensor circuit.
3. CHECK DTC
Perform AT- 3 4 5 , "
DTC Confirmation Procedure" .
OK or NG
OK >>INSPECTION END
NG >> GO TO 5.
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: 0.5V
Fully-open throttle: 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:
0.5V
Fully-open
throttle: 4V
SCIA3247E

AT-350
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SHIFT SOLENOID VALVE A

SHIFT SOLENOID VALVE APFP:31940
DescriptionECS004TS
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 ValueECS00CSI
Remarks: Specification data are reference values.
On Board Diagnosis LogicECS00CSJ
Possible CauseECS00CSK
Check the following items.

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

Shift solenoid valve A
DTC Confirmation ProcedureECS00CSL
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.
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/VA
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
: 4th judgement flicker

SHIFT SOLENOID VALVE A
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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 transmission to shift 1
→ 2 (“GEAR”).
4. If the check result is NG, go to AT- 3 5 3 , "
Diagnostic Procedure" .
WITHOUT CONSULT-II
1. Start engine.
2. Drive vehicle in D
1 → D2 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- 3 5 3 , "
Diagnostic Procedure" .
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SCIA5594E

AT-352
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SHIFT SOLENOID VALVE A

Wiring Diagram — AT — SSV/AECS004TT
TCWA0040E

SHIFT SOLENOID VALVE A
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TERMINALS AND REFERENCE VALUE MEASURED BETWEEN EACH TERMINAL
Diagnostic ProcedureECS004TU
1. CHECK INPUT SIGNAL
With CONSULT-II
1. Start engine.
2. Select “MAIN SIGNALS” in “DATA MONITOR” mode for “A/T” with CONSULT-II.
3. Read out the value of “SHIFT S/V A” while driving.
Check the value changes according to driving speed.
Without CONSULT-II
1. Start engine.
2. Check voltage between TCM connector and ground.
OK or NG
OK >> GO TO 5.
NG >> GO TO 2.
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
Monitor item Condition Display value
SHIFT S/V AWhen shift solenoid valve A operates.
(When driving in “D
1 ” or “D4 ”.)ON
When shift solenoid valve A does not oper-
ate.
(When driving in “D
2 ” or “D3 ”.)OFF
SCIA3251E
Name Connec-
tor No. Terminal
No. (Wire
color) ConditionJudge-
mentstan-
dard(Appro
x.)
Shift sole-
noid valve A F46 11 (L/W) -
GroundWhen shift solenoid valve
A operates.
(When driving in “D
1 ” or
“D
4 ”.)Battery
voltage
When shift solenoid valve
A does not operate.
(When driving in “D
2 ” or
“D
3 ”.)0V
SCIA3248E

AT-354
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SHIFT SOLENOID VALVE A

2. CHECK SHIFT SOLENOID VALVE A CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect TCM connector.
3. Check resistance between TCM connector terminal and ground.
OK or NG
OK >> GO TO 5.
NG >> GO TO 3.
3. CHECK HARNESS BETWEEN TCM AND TERMINAL CORD ASSEMBLY HARNESS CONNECTOR
1. Turn ignition switch OFF.
2. Disconnect terminal cord assembly harness connector and TCM connector.
3. Check continuity between terminal cord assembly harness con-
nector and TCM connector.
4. If OK, check harness for short to ground and short to power.
5. If OK, check continuity between ground and transaxle assembly.
6. Reinstall any part removed.
OK or NG
OK >> GO TO 4.
NG >> Repair open circuit or short to ground or short to power in harness or connectors.
4. CHECK VALVE RESISTANCE
1. Turn ignition switch OFF.
2. Disconnect terminal cord assembly connector in engine room.
3. Check resistance between terminal cord assembly harness con-
nector F23 terminal 2 (L/W) and ground.
OK or NG
OK >> GO TO 5.
NG >> Repair or replace damaged parts.
5. CHECK DTC
Perform AT- 3 5 0 , "
DTC Confirmation Procedure" .
OK or NG
OK >>INSPECTION END
NG >> GO TO 6.
Solenoid Valve Connector No.Terminal No.
(Wire color)Resistance
(Approx.)
Shift solenoid valve A F46 11 (L/W) -
Ground20 - 30 Ω
SCIA3249E
Item Connector No.Terminal No.
(Wire color)Continuity
TCM F46 11 (L/W)
Ye s
Terminal cord assembly
harness connectorF23 2 (L/W)
SCIA3250E
Resistance: 20 - 30Ω
SCIA3453E