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BATT/FLUID TEMP SEN (A/T FLUID TEMP SENSOR CIRCUIT AND TCM POW-
ER SOURCE)
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Component InspectionECS004UB
A/T FLUID TEMPERATURE SENSOR
For removal, refer toAT- 4 0 4 , "Control Valve Assembly and Accu-
mulators" .
Check resistance between two terminals while changing temper-
ature as shown at left.
Temperature °C (°F) Resistance
20 (68) Approximately 2.5 kΩ
80 (176) Approximately 0.3 kΩ
SAT298F
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![NISSAN X-TRAIL 2003 Service Repair Manual AT-382
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ENGINE SPEED SIGNAL
ENGINE SPEED SIGNALPFP:24825
DescriptionECS004UC
The engine speed signal is sent from the ECM to the TCM.
CONSULT-II Reference ValueECS00CT2
Remarks: Specification d NISSAN X-TRAIL 2003 Service Repair Manual AT-382
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ENGINE SPEED SIGNAL
ENGINE SPEED SIGNALPFP:24825
DescriptionECS004UC
The engine speed signal is sent from the ECM to the TCM.
CONSULT-II Reference ValueECS00CT2
Remarks: Specification d](/manual-img/5/57404/w960_57404-2417.png)
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ENGINE SPEED SIGNAL
ENGINE SPEED SIGNALPFP:24825
DescriptionECS004UC
The engine speed signal is sent from the ECM to the TCM.
CONSULT-II Reference ValueECS00CT2
Remarks: Specification data are reference values.
On Board Diagnosis LogicECS00CT3
DTC Confirmation ProcedureECS00CT4
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.
WITH CONSULT-II
1. Turn ignition switch ON and select “DATA MONITOR” mode for
“A/T” with CONSULT-II.
2. Start engine and maintain the following conditions for at least 10
consecutive seconds.
VHCL SPEED SE: 10 km/h (6 MPH) or more
THRTL POS SEN: More than 1.2V
SLCT LVR POSI: D position
3. If the check result is NG, go to AT- 3 8 4 , "
Diagnostic Procedure" .
WITHOUT CONSULT-II
1. Start engine.
2. Drive vehicle under the following conditions for more than 10 seconds.
Selector lever position: D position
Vehicle speed: higher than 10 km/h (6 MPH)
Throttle position: greater than 1.0/8 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 8 4 , "
Diagnostic Procedure" .
Monitor item Condition Display value
ENGINE SPEED (rpm) Engine running Approximately matches the tachometer
reading.
Diagnostic trouble code Malfunction is detected when... Check item (Possible cause)
: ENGINE SPEED SIG
TCM does not receive the proper voltage
signal from ECM.
Harness or connectors
(The sensor circuit is open or shorted.)
: 9th judgement flicker
SAT014K
SCIA5599E
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ENGINE SPEED SIGNAL
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Wiring Diagram — AT — ENGSSECS004UD
TCWA0232E
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AT-384
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ENGINE SPEED SIGNAL
TERMINALS AND REFERENCE VALUE MEASURED BETWEEN EACH TERMINAL
Diagnostic ProcedureECS004UE
1. CHECK DTC WITH ECM
Perform diagnostic test mode II (self-diagnostic results) for engine control. Check ignition signal circuit condi-
tion.
OK or NG
OK >> GO TO 2.
NG >> Check ignition signal circuit for engine control. Refer to EC-417, "
IGNITION SIGNAL" (WITH
EURO-OBD) or EC-798, "
IGNITION SIGNAL" (WITHOUT EURO-OBD).
Te r m i -
nal No.Wire color Item ConditionJudgement stan-
dard
(Approx.)
39 L/OREngine speed
signal
and
Refer to EC-95, "
ECM INSPECTION TABLE"
(WITH EURO-OBD) or EC-543, "
ECM
INSPECTION TABLE" (WITHOUT EURO-
OBD).—
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ENGINE SPEED SIGNAL
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2. 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 “ENGINE SPEED”.
Check engine speed changes according to throttle position.
Without CONSULT-II
1. Start engine.
2. Check voltage between TCM terminal 39 and ground.
OK or NG
OK >> GO TO 4.
NG >> GO TO 3.
SAT014K
SAT645J
Name Connec-
tor No. Terminal
No. (Wire
color) ConditionJudgement standard
(Approx.)
Engine
speed signal F47 39(L/OR) -
Ground—Refer to EC-543, "
ECM
INSPECTION TABLE"
(WITHOUT EURO-OBD).
SCIA3265E
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![NISSAN X-TRAIL 2003 Service Repair Manual AT-386
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ENGINE SPEED SIGNAL
3. CHECK HARNESS BETWEEN TCM AND ECM
1. Turn ignition switch OFF.
2. Disconnect ECM connector and TCM connector.
3. Check continuity between ECM connector and TCM c NISSAN X-TRAIL 2003 Service Repair Manual AT-386
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ENGINE SPEED SIGNAL
3. CHECK HARNESS BETWEEN TCM AND ECM
1. Turn ignition switch OFF.
2. Disconnect ECM connector and TCM connector.
3. Check continuity between ECM connector and TCM c](/manual-img/5/57404/w960_57404-2421.png)
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ENGINE SPEED SIGNAL
3. CHECK HARNESS BETWEEN TCM AND ECM
1. Turn ignition switch OFF.
2. Disconnect ECM connector and TCM connector.
3. Check continuity between ECM connector and TCM connector.
4. If OK, check harness for short to ground and short to power.
5. If OK, check continuity between body 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 DTC
Perform Refer to AT- 3 8 2 , "
DTC Confirmation Procedure" .
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. GO TO 5.
5. 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.
Item Connector No.Terminal No.
(Wire color)Continuity
TCM F47 39 (L/OR)
Ye s
ECM M118 103 (L/OR)
SCIA3269E
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![NISSAN X-TRAIL 2003 Service Repair Manual LINE PRESSURE SOLENOID VALVE
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LINE PRESSURE SOLENOID VALVEPFP:31940
DescriptionECS004UF
The line pressure solenoid valve regulates the oil pump discharge
pressu NISSAN X-TRAIL 2003 Service Repair Manual LINE PRESSURE SOLENOID VALVE
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LINE PRESSURE SOLENOID VALVEPFP:31940
DescriptionECS004UF
The line pressure solenoid valve regulates the oil pump discharge
pressu](/manual-img/5/57404/w960_57404-2422.png)
LINE PRESSURE SOLENOID VALVE
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LINE PRESSURE SOLENOID VALVEPFP:31940
DescriptionECS004UF
The line pressure solenoid valve regulates the oil pump discharge
pressure to suit the driving condition in response to a signal sent
from the TCM.
The line pressure duty cycle value is not consistent when the
closed throttle position switch is ON. To confirm the line pres-
sure duty cycle at low pressure, the accelerator (throttle)
should be open until the closed throttle position switch is OFF.
CONSULT-II Reference ValueECS00CT5
Remarks: Specification data are reference values.
NOTE:
The line pressure duty cycle value is not consistent when the closed throttle position switch is “ON”. To confirm the line pressure duty
cycle at low pressure, the accelerator (throttle) should be open until the closed throttle position switch is “OFF”.
On Board Diagnosis LogicECS00CT6
Possible CauseECS00CT7
Check the following items.
Harness or connector
(The solenoid circuit is open or shorted.)
Line pressure solenoid valve
DTC Confirmation ProcedureECS00CT8
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.
SCIA0735E
Monitor item Condition Specification
Line pressure solenoid valve dutySmall throttle opening
(Low line pressure)
↓
Large throttle opening
(High line pressure)Approximately 24%
↓
Approximately 95%
Diagnostic trouble code Malfunction is detected when... Check items (Possible cause)
: LINE PRESSURE 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.)
Line pressure solenoid valve
: 10th judgement flicker
SAT014K
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LINE PRESSURE SOLENOID VALVE
2. Depress accelerator pedal completely and wait at least 5 sec-
onds.
3. If check result is NG, go to AT- 3 9 0 , "
Diagnostic Procedure" .
WITHOUT CONSULT-II
1. Start engine.
2. With brake pedal depressed, shift the lever from P → N → D → N → P positions.
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 9 0 , "
Diagnostic Procedure" .
SCIA5358E
SCIA5600E