2001 NISSAN X-TRAIL engine control

TROUBLE DIAGNOSES FOR SYMPTOMS
AT-345
[EXC.F/EURO-OBD]
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DESCRIPTION
●PNP switch
The PNP switch assembly includes a transmission position
switch. The transmission position switch detects the selector
lever position and sends a signal to the TCM.
●Overdrive control switch
Detects the overdrive control switch position (ON or OFF) and
sends a signal to the TCM.
●Closed throttle position signal and wide-open throttle position
signal
ECM judges throttle opening based on a signal from accelerator
pedal position sensor, and sends the signal via CAN communi-
cation to TCM.
DIAGNOSTIC PROCEDURE
1.CHECK PNP SWITCH CIRCUIT (WITH CONSULT-II)
With CONSULT-II
1. Turn ignition switch to “ON” position.
(Do not start engine.)
2. Select “TCM INPUT SIGNALS” in “DATA MONITOR” mode for “A/T” with CONSULT-II.
3. Read out “P/N”, “R”, “D”, “2” and “1” position switches moving selector lever to each position.
Check that the signal of the selector lever position is indicated
properly.
OK or NG
OK >> GO TO 3.
NG >> Check the following items:
●PNP switch (Refer to AT- 3 4 9 , "COMPONENT
INSPECTION" .)
●Harness for short or open between ignition switch and
PNP switch
●Harness for short or open between PNP switch and
TCM
●Diode (P, N positions)
SCIA0752E
SCIA0776E
PBIB0498E
SAT701J

AT-346
[EXC.F/EURO-OBD]
TROUBLE DIAGNOSES FOR SYMPTOMS
2. CHECK PNP SWITCH CIRCUIT (WITHOUT CONSULT-II)
Without CONSULT-II
1. Turn ignition switch to “ON” position. (Do not start engine.)
2. Check voltage between TCM terminals 26, 27, 34, 35, 36 and
ground while moving selector lever through each position.
OK or NG
OK >> GO TO 4.
NG >> Check the following items:
●PNP switch (Refer to AT- 3 4 9 , "COMPONENT
INSPECTION" .)
●Harness for short or open between ignition switch and
PNP switch
●Harness for short or open between PNP switch and TCM
●Diode (P, N positions)
3. CHECK OVERDRIVE CONTROL SWITCH CIRCUIT (WITH CONSULT-II)
With CONSULT-II
1. Turn ignition switch to “ON” position.
(Do not start engine.)
2. Select “TCM INPUT SIGNALS” in “DATA MONITOR” mode for “A/T” with CONSULT-II.
3. Read out “OVERDRIVE SWITCH”.
Check the signal of the overdrive control switch is indicated properly.
(Overdrive control switch “ON” displayed on CONSULT-II means
overdrive “OFF”.)
OK or NG
OK >> GO TO 5.
NG >> Check the following items:
●Overdrive control switch (Refer to AT- 3 4 9 , "COMPO-
NENT INSPECTION" .)
●Harness for short or open between TCM and over-
drive control switch
●Harness of ground circuit for overdrive control switch
for short or open Voltage:
B: Battery voltage
0: 0V
Lever positionTerminal No.
36 35 34 27 26
P, N B 0 0 0 0
R0B000
D00B00
2000B0
10000B
SCIA0777E
SAT645J

TROUBLE DIAGNOSES FOR SYMPTOMS
AT-347
[EXC.F/EURO-OBD]
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4.CHECK OVERDRIVE CONTROL SWITCH CIRCUIT (WITHOUT CONSULT-II)
Without CONSULT-II
1. Turn ignition switch to “ON” position.
(Do not start engine.)
2. Check voltage between TCM terminal 22 and ground when overdrive control switch is “ON” and “OFF”.
OK or NG
OK >> GO TO 6.
NG >> Check the following items:
●Overdrive control switch (Refer to “Component Inspection”, AT- 3 4 9 , "COMPONENT INSPEC-
TION" .)
●Harness for short or open between TCM and overdrive control switch
●Harness of ground circuit for overdrive control switch for short or open Vo l t a g e :
Switch position “ON”: Battery voltage
Switch position “OFF”: 1V or less
SCIA0778E

AT-358
[ALL]
DTC VEHICLE SPEED SENSOR MTR
DTC VEHICLE SPEED SENSOR MTR
PFP:24814
DescriptionECS004TM
The vehicle speed sensor·MTR is built into the speedometer assem-
bly. The sensor functions as an auxiliary device to the revolution sen-
sor when it is malfunctioning. The TCM will then use a signal sent
from the vehicle speed sensor·MTR.
TCM TERMINALS AND REFERENCE VALUE
Remarks: Specification data are reference values.
ON BOARD DIAGNOSIS LOGIC
SELF-DIAGNOSIS CODE CONFIRMATION PROCEDURE
After the repair, perform the following procedure to confirm the malfunction is eliminated.
With CONSULT-II
1. Start engine.
2. Select “SELF-DIAG RESULTS” mode for A/T with CONSULT-II.
3. Drive vehicle under the following conditions:
Selector lever in “D” position and vehicle speed higher than 20
km/h (12 MPH).
SCIA0716E
Te r m i -
nal No.Wire color Item ConditionJudgement stan-
dard
(Approx.)
40 L/BVehicle speed
sensorWhen moving vehicle at 2 to 3 km/h
(1 to 2 MPH) for 1 m (3 ft) or more.Voltage varies
between less
than 0V and
more than 4.5V
Diagnostic trouble code Malfunction is detected when... Check items (Possible cause)
: VHCL SPEED SEN·MTR
TCM does not receive the proper voltage
signal from the sensor.
●Harness or connectors
(The sensor circuit is open or shorted.)
●Combination meter
●4WD/ABS control unit : 2nd judgement flicker
SAT014K

DTC VEHICLE SPEED SENSOR MTR
AT-361
[ALL]
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Diagnostic ProcedureECS004TO
1.CHECK INPUT SIGNAL
With CONSULT-II
1. Start engine.
2. Select “TCM INPUT SIGNALS” in “DATA MONITOR” mode for “A/T” with CONSULT-II.
3. Read out the value of “VHCL/S SE·MTR” while driving.
Check the value changes according to driving speed.
Without CONSULT-II
1. Start engine.
2. Check voltage between TCM terminal 40 and ground while driv-
ing at 2 to 3 km/h (1 to 2 MPH) for 1 m (3 ft) or more.
OK or NG
OK >> GO TO 2
NG >> Check the following items. If any items are damaged, repair or replace damaged parts.
●Combination meter
Refer to DI-4, "
COMBINATION METERS (LHD MODELS)" or DI-24, "COMBINATION
METERS (RHD MODELS)" .
●Harness for short or open between TCM and combination meter
●4WD/ABS control unit
Refer to BRC-24, "
SELF-DIAGNOSIS" .
●Harness for short or open between 4WD/ABS control unit and combination meter
2.CHECK DTC
Perform Self-diagnosis Code confirmation procedure, AT- 3 5 8 , "
SELF-DIAGNOSIS CODE CONFIRMATION
PROCEDURE" .
OK or NG
OK >>INSPECTION END
NG >> 1. Perform TCM input/output signal inspection.
2. If NG, recheck TCM pin terminals for damage or loose connection with harness connector. Voltage: Voltage varies between less than 1V and
more than 4.5V.
SAT614J
SCIA0717E

AT-362
[ALL]
ACCELE RATOR PEDAL POSITION (APP) SENSOR
ACCELE RATOR PEDAL POSITION (APP) SENSOR
PFP: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 TCM.
CONSULT-II REFERENCE VALUE IN DATA MONITOR MODE
Remarks: Specification data are reference values.
TCM TERMINALS AND REFERENCE VALUE
Remarks: Specification data are reference values.
ON BOARD DIAGNOSIS LOGIC
*:This code means Accelerator pedal position (APP) sensor in reality.
PBIB0498E
Monitor item Condition Specification
Accelerator pedal position (APP) sensor
(THRTL POS SEN)Fully-closed throttle Approximately 0.5V
Fully-open throttle Approximately 4V
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 W/RThrottle 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 BGround
(Throttle position
sensor)———
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

ACCELE RATOR PEDAL POSITION (APP) SENSOR
AT-365
[ALL]
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Diagnostic ProcedureECS004TR
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-457, "
Malfunction Indicator (MI)" (QR25DE) or EC-1144, "Malfunction Indicator (MI)" (QR20DE).
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.
2.CHECK INPUT SIGNAL (WITH CONSULT-II)
With CONSULT-II
1. Turn ignition switch to “ON” position.
(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”.
OK or NG
OK >> GO TO 4.
NG >> Check harness for short or open between ECM and
TCM regarding throttle position sensor circuit.
SAT014K
Vo l t a g e :
Fully-closed throttle :Approximately 0.5V
Fully-open throttle :Approximately 4V
SAT614J

AT-370
[ALL]
SHIFT SOLENOID VALVE A
Diagnostic Procedure
ECS004TU
1. CHECK VALVE RESISTANCE
1. Turn ignition switch to “OFF” position.
2. Disconnect terminal cord assembly connector in engine compartment.
3. Check resistance between terminal 2 and ground.
OK or NG
OK >> GO TO 2.
NG >> 1. Remove control valve assembly. Refer to AT- 4 1 3 ,
"Installation" .
2. Check the following items:
Shift solenoid valve A
Refer to AT-371, "
Component Inspection" .
Harness of terminal cord assembly for short or open
2. CHECK POWER SOURCE CIRCUIT
1. Turn ignition switch to “OFF” position.
2. Disconnect TCM harness connector.
3. Check continuity between terminal 2 and TCM harness connector terminal 11.
If OK, check harness for short to ground and short to power.
4. Reinstall any part removed.
OK or NG
OK >> GO TO 3.
NG >> Repair open circuit or short to ground or short to power
in harness or connectors.
3. CHECK DTC
Perform Self-diagnosis Code confirmation procedure. Refer to AT- 3 6 7 , "
SELF-DIAGNOSIS CODE CONFIR-
MATION PROCEDURE" .
OK or NG
OK >>INSPECTION END
NG >> 1. Perform TCM input/output signal inspection.
2. If NG, recheck TCM pin terminals for damage or loose connection with harness connector. Resistance : 20 - 30Ω
SCIA0719E
Continuity should exist.
SCIA0720E