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![NISSAN X-TRAIL 2001 Service Repair Manual DTC P0720 VEHICLE SPEED SENSOR·A/T (REVOLUTION SENSOR)
AT-123
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DIAGNOSTIC TROUBLE CODE (DTC) CONFIRMATION PROCEDURE
CAUTION:
●Always drive vehicle at a safe spee NISSAN X-TRAIL 2001 Service Repair Manual DTC P0720 VEHICLE SPEED SENSOR·A/T (REVOLUTION SENSOR)
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DIAGNOSTIC TROUBLE CODE (DTC) CONFIRMATION PROCEDURE
CAUTION:
●Always drive vehicle at a safe spee](/manual-img/5/57405/w960_57405-2200.png)
DTC P0720 VEHICLE SPEED SENSOR·A/T (REVOLUTION SENSOR)
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DIAGNOSTIC TROUBLE CODE (DTC) CONFIRMATION PROCEDURE
CAUTION:
●Always drive vehicle at a safe speed.
●Be careful not to rev engine into the red zone on the
tachometer.
NOTE:
If “DIAGNOSTIC TROUBLE CODE CONFIRMATION PROCE-
DURE” 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 mal-
function is eliminated.
With CONSULT-II
1. Turn ignition switch “ON” and select “DATA MONITOR” mode for
“A/T” with CONSULT-II.
2. Drive vehicle and check for an increase of “VHCL/S SE·MTR”
value increase.
If the check result is NG, go to AT- 1 2 5 , "
Diagnostic Procedure" .
If the check result is OK, go to following step.
3. Select “DATA MONITOR” mode for “ENGINE” with CONSULT-II.
4. Start engine and maintain the following conditions for at least 5
consecutive seconds.
VHCL SPEED SE: 30 km/h (19 MPH) or more
THRTL POS SEN: More than 1.2V
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.
If the check result is NG, go to AT- 1 2 5 , "
Diagnostic Procedure" .
If the check result is OK, go to following step.
5. Maintain the following conditions for at least 5 consecutive sec-
onds.
CMPS·RPM (REF): 3,500 rpm or more
THRTL POS SEN: More than 1.2V
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.
With GST
Follow the procedure “With CONSULT-II”.
SAT014K
SAT971J
SAT014K
SAT020K
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AT-124
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DTC P0720 VEHICLE SPEED SENSOR·A/T (REVOLUTION SENSOR)
Wiring Diagram — AT — VSSA/T
ECS004R5
TCWA0037E
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DTC P0720 VEHICLE SPEED SENSOR·A/T (REVOLUTION SENSOR)
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Diagnostic ProcedureECS004R6
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
●Harness for short or open between ignition switch and revolution sensor
OK or NG
OK >> GO TO 3.
NG >> Repair or replace damaged parts.
SAT014K
SAT614J
MTBL0581
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AT-126
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DTC P0720 VEHICLE SPEED SENSOR·A/T (REVOLUTION SENSOR)
3. CHECK DTC
Perform Diagnostic Trouble Code (DTC) confirmation procedure. Refer to AT- 1 2 3 , "
DIAGNOSTIC TROUBLE
CODE (DTC) CONFIRMATION PROCEDURE" .
OK or NG
OK >>INSPECTION END
NG >> GO TO 4.
4. CHECK TCM INSPECTION
1. Perform TCM input/output signal inspection.
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.
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![NISSAN X-TRAIL 2001 Service Repair Manual DTC P0725 ENGINE SPEED SIGNAL
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DTC P0725 ENGINE SPEED SIGNALPFP:24825
DescriptionECS004R7
The engine speed signal is sent from the ECM to the TCM.
TCM TERMIN NISSAN X-TRAIL 2001 Service Repair Manual DTC P0725 ENGINE SPEED SIGNAL
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DTC P0725 ENGINE SPEED SIGNALPFP:24825
DescriptionECS004R7
The engine speed signal is sent from the ECM to the TCM.
TCM TERMIN](/manual-img/5/57405/w960_57405-2204.png)
DTC P0725 ENGINE SPEED SIGNAL
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DTC P0725 ENGINE SPEED SIGNALPFP:24825
DescriptionECS004R7
The engine speed signal is sent from the ECM to the TCM.
TCM TERMINALS AND REFERENCE VALUE
Remarks: Specification data are reference values.
ON BOARD DIAGNOSIS LOGIC
DIAGNOSTIC TROUBLE CODE (DTC) CONFIRMATION PROCEDURE
CAUTION:
Always drive vehicle at a safe speed.
NOTE:
If “DIAGNOSTIC TROUBLE CODE CONFIRMATION PROCE-
DURE” 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 mal-
function is eliminated.
With CONSULT-II
1. Turn ignition switch “ON” and select “DATA MONITOR” mode for
“ENGINE” 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
Selector lever: D position (OD “ON”)
With GST
Follow the procedure “With CONSULT-II”.
Te r m i -
nal No.Wire color Item ConditionJudgement stan-
dard
(Approx.)
39 L/OREngine speed sig-
nalandRefer to EC-87, "
ECM INSPECTION TABLE"
(QR25DE) or EC-819, "ECM INSPECTION
TABLE" (QR20DE).—
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.)
: P0725
SAT014K
SAT020K
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AT-128
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DTC P0725 ENGINE SPEED SIGNAL
Wiring Diagram — AT — ENGSS
ECS004R8
TCWA0045E
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DTC P0725 ENGINE SPEED SIGNAL
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Diagnostic ProcedureECS004R9
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 (With CONSULT-II)>>GO TO 2.
OK (Without CONSULT-II)>>GO TO 3.
NG >> Check ignition signal circuit for engine control. Refer to EC-379, "
IGNITION SIGNAL" (QR25DE)
orEC-1074, "
IGNITION SIGNAL" (QR20DE).
2.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 “ENGINE SPEED”.
Check engine speed changes according to throttle position.
OK or NG
OK >> GOTO4
NG >> Check the following items:
●Harness for short or open between TCM and ECM
●Resistor and ignition coil. Refer to EC-379, "IGNI-
TION SIGNAL" (QR25DE) or EC-1074, "IGNITION
SIGNAL" (QR20DE).
SAT014K
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AT-130
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DTC P0725 ENGINE SPEED SIGNAL
3. CHECK INPUT SIGNAL (WITHOUT CONSULT-II)
Without CONSULT-II
1. Start engine.
2. Check voltage between TCM terminal 39 and ground.
OK or NG
OK >> GOTO4
NG >> Check the following items:
●Harness for short or open between TCM and ECM
●Resistor and ignition coil. Refer to EC-379, "IGNI-
TION SIGNAL" (QR25DE) or EC-1074, "IGNITION
SIGNAL" (QR20DE).
4. CHECK DTC
Perform Diagnostic Trouble Code (DTC) confirmation procedure. Refer to AT- 1 2 7 , "
DTC P0725 ENGINE
SPEED SIGNAL" .
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 (Idle speed): Refer to EC-87, "
ECM INSPEC-
TION TABLE" (QR25DE) or EC-
819, "ECM INSPECTION TABLE"
(QR20DE).
SCIA0740E