engine NISSAN X-TRAIL 2003 Electronic Repair Manual

TROUBLE DIAGNOSES FOR SYMPTOMS
AT-387
[EXC.F/EURO-OBD]
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6.CHECK THROTTLE POSITION SENSOR CIRCUIT (WITHOUT CONSULT-II)
Without CONSULT-II
1. Pefer to "SELF-DIAGNOSTIC PROCEDURE (Without CONSULT-II)",AT-273, "
Diagnostic Procedure
Without CONSULT-II"—Except for Euro-OBD/Refer to "TCM SELF-DIAGNOSTIC PROCEDURE (NO
TOOLS)",AT-51, "
TCM SELF-DIAGNOSTIC PROCEDURE (NO TOOLS)"—Euro-OBD
2. Turn ignition switch to "ON" position.
(Do not start engine.)
3. Check voltage between TCM terminals 41 and ground while
depressing, and releasing accelerator pedal slowly. (After warm-
ingupengine)
OK or NG
OK >> GOTO7
NG >> Check the following items:
lThrottle position sensor — Refer to “Component Inspection”,AT-387, "COMPONENT INSPEC-
TION".
lHarness for short or open between ignition switch and throttle position sensor (Main harness)
lHarness for short or open between throttle position sensor and TCM (Main harness)
7.CHECK DTC
Perform “DIAGNOSTIC PROCEDURE”,AT-383, "
DIAGNOSTIC PROCEDURE".
OK or NG
OK >>INSPECTION END
NG >>
lPerform TCM input/output signal inspection.
lIf NG, recheck TCM pin terminals for damage or loose connection with harness connector.
COMPONENT INSPECTION
Overdrive Control Switch
lCheck continuity between two terminals 7 and 8.
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Switch position Continuity
ON No
OFF Yes
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AT-390
[ALL]
MAIN POWER SUPPLY AND GROUND CIRCUIT
TCM TERMINALS AND REFERENCE VALUE
Remarks: Specification data are reference values.
Diagnostic ProcedureECS004TI
1.CHECK TCM POWER SOURCE STEP 1
1. Turn ignition switch to ON position.
(Do not start engine.)
2. Check voltage between TCM terminals 10, 19, 28 and ground.
OK or NG
OK >> GO TO 2
NG >> GO TO 3
2.CHECK TCM POWER SOURCE STEP 2
1. Turn ignition switch to OFF position.
2. Check voltage between TCM terminal 28 and ground.
OK or NG
OK >> GO TO 4
NG >> GO TO 3
Te r m i -
nal No.Wire color Item ConditionJudgement stan-
dard
(Approx.)
10 BR/W Power source
orWhen turning ignition switch to “ON”. Battery voltage
When turning ignition switch to
“OFF”.0V
19 BR/W Power source Same as No. 10
25 B/W Ground — — —
28 R/BPower source
(Memory back-up)
orWhen turning ignition switch to
“OFF”.Battery voltage
When turning ignition switch to “ON”. Battery voltage
48 B/W Ground — — —
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VEHICLE SPEED SENSOR·A/T (REVOLUTION SENSOR)
AT-393
[ALL]
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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, vehicle speed higher than 30 km/h
(19 MPH), throttle opening greater than 1/8 of the full throttle
position and driving for more than 5 seconds.
Without CONSULT-II
1. Start engine.
2. Drive vehicle under the following conditions:
Selector lever in “D” position, vehicle speed higher than 30 km/h
(19 MPH), throttle opening greater than 1/8 of the full throttle
position and driving for more than 5 seconds.
3. Perform self-diagnosis.
Refer to “SELF-DIAGNOSTIC PROCEDURE (Without CON-
SULT-II)”,AT-273, "
Diagnostic Procedure Without CONSULT-II"
.
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VEHICLE SPEED SENSOR·A/T (REVOLUTION SENSOR)
AT-395
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Diagnostic ProcedureECS004TL
1.CHECK INPUT SIGNAL (WITH CONSULT-II)
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·A/T” while driving.
Check the value changes according to driving speed.
OK or NG
OK >> GO TO 3
NG >> GO TO 2
2.CHECK REVOLUTION SENSOR (WITH CONSULT-II)
With CONSULT-II
1. Start engine.
Harness for short or open between TCM, ECM and revolution sensor (Main harness)
OK or NG
OK >> GO TO 3
NG >> Repair or replace damaged parts.
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MTBL0575

DTC VEHICLE SPEED SENSOR MTR
AT-397
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DTC VEHICLE SPEED SENSOR MTRPFP: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).
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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
(1to2MPH)for1m(3ft)ormore.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.
lHarness or connectors
(The sensor circuit is open or shorted.)
lVehicle speed sensor
: 2nd judgement flicker
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AT-398
[ALL]
DTC VEHICLE SPEED SENSOR MTR
Without CONSULT-II
1. Start engine.
2. Drive vehicle under the following conditions:
Selector lever in “D” position and vehicle speed higher than 20
km/h (12 MPH).
3. Perform self-diagnosis.
Refer to “SELF-DIAGNOSTIC PROCEDURE (Without CON-
SULT-II)”,AT-397, "
SELF-DIAGNOSIS CODE CONFIRMATION
PROCEDURE".
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AT-400
[ALL]
DTC VEHICLE SPEED SENSOR MTR
Diagnostic Procedure
ECS004TO
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:
lVehicle speed sensor and ground circuit for vehicle speed sensor
Refer toDI-10, "
Meter/Gauge Operation and Odo/Trip Meter Segment Check in Diagnosis
Mode", “METERS AND GAUGES”.
lHarness for short or open between TCM and vehicle speed sensor (Main harness)
2.CHECK DTC
Perform Self-diagnosis Code confirmation procedure,AT-397, "
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.
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ACCELE RATOR PEDAL POSITION (APP) SENSOR
AT-401
[ALL]
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ACCELE RATOR PEDAL POSITION (APP) SENSORPFP:22620
DescriptionECS0 04 T P
lAccelerator pedal position (APP) sensor (Throttle position sen-
sor)
Electric throttle contral actuator consists of throttle control motor,
accelration 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
(Throttle position sensor)Fully-closed throttle Approximately 0.5V
Fully-open throttle Approximately 4V
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nal No.Wire color Item ConditionJudgement stan-
dard
(Approx.)
32 RThrottle position
sensor
(Power source)
orWhen 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.
lHarness or connectors
(The sensor circuit is open or shorted.)
lAccelerator pedal position (APP) sensor
(Throttle position sensor) : 3rd judgement flicker

AT-402
[ALL]
ACCELE RATOR PEDAL POSITION (APP) SENSOR
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, vehicle speed higher than 10 km/h
(6 MPH), throttle opening greater than 1/2 of the full throttle
position and driving for more than 3 seconds.
Without CONSULT-II
1. Start engine.
2. Drive vehicle under the following conditions:
Selector lever in “D” position, vehicle speed higher than 10 km/h
(6 MPH), throttle opening greater than 1/2 of the full throttle
position and driving for more than 3 seconds.
3. Perform self-diagnosis.
Refer to “SELF-DIAGNOSTIC PROCEDURE (Without CON-
SULT-II)”,AT-407, "
Without CONSULT-II".
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AT-404
[ALL]
ACCELE RATOR PEDAL POSITION (APP) SENSOR
Diagnostic Procedure
ECS004TR
1.CHECK DTC WITH ECM
lCheck P code with CONSULT-II “ENGINE”.
Turn ignition switch ON and select “SELF DIAGNOSTIC RESULTS” mode for “ENGINE” with CONSULT-II.
Refer to "EC-48, "
Malfunction Indicator (MI)"", “Malfunction Indicator Lamp (MIL)”.
OK or NG
OK (With CONSULT-II)>>GOTO2
OK (Without CONSULT-II)>>GOTO3
NG >> Check throttle position sensor circuit for engine control. Refer to "EC-154, "
DTC P0121 APP SEN-
SOR"", “DTC P0121 Accelerator pedal position (APP) sensor”.
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. (Main
harness)
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Vo l ta g e :
Fully-closed throttle :Approximately 0.5V
Fully-open throttle :Approximately 4V
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