NISSAN X-TRAIL 2003 Service Repair Manual

DTC P0720 VEHICLE SPEED SENSOR·A/T (REVOLUTION SENSOR)
AT-115
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TERMINALS AND REFERENCE VALUE MEASURED BETWEEN EACH TERMINAL
Diagnostic ProcedureECS004R6
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·A/T” while driving.
Check the value changes according to driving speed.
OK or NG
OK >> GO TO 8.
NG >> GO TO 2.
Termi-
nal No.Wire color Item ConditionJudgement stan-
dard
(Approx.)
29 W/R Revolution sensorWhen moving at 20 km/h (12 MPH). 450 Hz
When vehicle parks.Under 1.3V or
over 4.5V
42 B Sensor ground Always 0V
SAT014K
SAT614J

AT-116
[EURO-OBD]
DTC P0720 VEHICLE SPEED SENSOR·A/T (REVOLUTION SENSOR)

2. CHECK REVOLUTION SENSOR
With CONSULT-II
1. Start engine.
2. Check power supply to revolution sensor by voltage between TCM connector terminals. Refer to AT- 3 9 5 ,
"Wiring Diagram — AT — MAIN" and AT- 11 4 , "Wiring Diagram — AT — VSSA/T" .
3. If OK check the pulse when vehicle cruises.
OK or NG
OK >> GO TO 8.
NG >> GO TO 3.
Item Connector
No. Terminal No. (Wire color) Data (Approx.)
TCM F46, F47 10 (BR/W) - 42 (B)
Battery voltage
19 (BR/W) - 42 (B)
Name Condition
Revolution sensorWhen moving at 20 km/h (12 MPH), use the CONSULT-II
pulse frequency measuring function.
CAUTION:
Connect the diagnosis data link cable to the data link
connector.
Item Connector
No. Te r m i n a l
No. (Wire
color) Name Data
(Approx.)
TCM F47 29 (W/R) Revolution sensor 450 Hz
SCIA2344E

DTC P0720 VEHICLE SPEED SENSOR·A/T (REVOLUTION SENSOR)
AT-117
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3. CHECK POWER AND SENSOR GROUND
1. Turn ignition switch OFF.
2. Disconnect the revolution sensor harness connector.
3. Turn ignition switch ON. (Do not start engine.)
4. Check voltage between revolution sensor harness connector
terminals.
5. Check voltage between revolution sensor harness connector
terminal and ground.
6. If OK, check harness for short to ground and short power.
7. Reinstall any part removed.
OK or NG
OK >> GO TO 4.
NG - 1 >> Battery voltage is not supplied between terminals 1 and 3, terminals 1 and ground.:GO TO 6.
NG - 2 >> Battery voltage is not supplied between terminals 1 and 3 only.: GO TO 7.
4. CHECK HARNESS BETWEEN TCM AND REVOLUTION SENSOR
1. Turn ignition switch OFF.
2. Disconnect the TCM connector and revolution sensor harness connector.
3. Check continuity between TCM connector terminal and revolu-
tion sensor harness connector terminal.
4. If OK, check harness for short to ground and short power.
5. Reinstall any part removed.
OK or NG
OK >> GO TO 5.
NG >> Repair open circuit or short to ground or short to power in harness or connectors.
5. CHECK TCM
1. Check TCM input/output signal. Refer to AT- 9 4 , "
TCM Terminals and Reference Value" .
2. If NG, re-check TCM pin terminals for damage or loose connection with harness connector.
OK or NG
OK >> GO TO 8.
NG >> Repair or replace damaged parts.
Item Connector No. Terminal No.
(Wire color) Data
(Approx.)
Revolution sensor F15 1 (BR/W) - 3 (B)Battery volt-
age
SCIA2614E
Item Connector No. Terminal No.
(Wire color) Data
(Approx.)
Revolution sensor F15 1 (BR/W) -
groundBattery volt-
age
SCIA2615E
Item Connector No. Terminal No.
(Wire color) Continuity
TCM F47 29 (W/R)
Ye s
Revolution sensor F15 2 (W/R)
SCIA2616E

AT-118
[EURO-OBD]
DTC P0720 VEHICLE SPEED SENSOR·A/T (REVOLUTION SENSOR)

6. CHECK HARNESS BETWEEN TCM AND REVOLUTION SENSOR (POWER)
1. Turn ignition switch OFF.
2. Disconnect the TCM connector and revolution sensor harness connector.
3. Check continuity between TCM connector terminals and revolu-
tion sensor harness connector terminals. Refer to AT- 2 1 , "
Circuit
Diagram" and AT- 3 9 5 , "Wiring Diagram — AT — MAIN" .
4. If OK, check harness for short to ground and short power.
5. Reinstall any part removed.
OK or NG
OK >> Fuse or ignition switch are malfunctioning.
NG >> Repair open circuit or short to ground or short to power in harness or connectors.
7. CHECK HARNESS BETWEEN TCM AND REVOLUTION SENSOR (SENSOR GROUND)
1. Turn ignition switch OFF.
2. Disconnect the TCM connector and revolution sensor harness connector.
3. Check continuity between TCM connector terminal and revolu-
tion sensor harness connector terminal.
4. If OK, check harness for short to ground and short power.
5. Reinstall any part removed.
OK or NG
OK >> GO TO 5.
NG >> Repair open circuit or short to ground or short to power in harness or connectors.
8. CHECK DTC
Perform AT- 11 2 , "
DTC Confirmation Procedure" .
OK or NG
OK >>INSPECTION END
NG >> GO TO 5.
Item Connector No. Terminal No.
(Wire color) Continuity
TCM F46 10 (BR/W)
Ye s
Revolution sensor F15 1 (Y)
Item Connector No. Terminal No.
(Wire color) Continuity
TCM F46 19 (BR/W)
Ye s
Revolution sensor F15 1 (Y)
SCIA2617E
Item Connector No. Terminal No.
(Wire color) Continuity
TCM F47 42 (B)
Ye s
Revolution sensor F15 3 (B)
SCIA2618E

DTC P0725 ENGINE SPEED SIGNAL
AT-119
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DTC P0725 ENGINE SPEED SIGNALPFP:24825
DescriptionECS004R7
The engine speed signal is sent from the ECM to the TCM.
On Board Diagnosis LogicECS00CTP
Possible CauseECS00CTQ
Check the following items.

Harness or connector (The sensor circuit is open or shorted.)
DTC Confirmation ProcedureECS00CTR
CAUTION:
Always drive vehicle at a safe speed.
NOTE:
If “DTC Confirmation Procedure” 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 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
Selector lever: D position (OD ON)
3. If the check result is NG, go to AT- 1 2 2 , "
Diagnostic Procedure" .
WITH GST
Follow the procedure “WITH CONSULT-II”.
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
SCIA5358E

AT-120
[EURO-OBD]
DTC P0725 ENGINE SPEED SIGNAL

WITHOUT CONSULT-II
1. Start engine.
2. Drive vehicle under the following conditions for more than 5 sec-
onds.
Selector lever: D position (OD ON)
Vehicle speed: 10 km/h (6 MPH) or more
Throttle position: greater than 1.0/8 of the full throttle posi-
tion
3. Perform self-diagnosis.
Refer to AT- 5 2 , "
Diagnostic Procedure Without CONSULT-II" .
4. If the check result is NG, go to AT- 1 2 2 , "
Diagnostic Procedure" .SCIA5599E

DTC P0725 ENGINE SPEED SIGNAL
AT-121
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Wiring Diagram — AT — ENGSSECS004R8
TCWA0232E

AT-122
[EURO-OBD]
DTC P0725 ENGINE SPEED SIGNAL

TERMINALS AND REFERENCE VALUE MEASURED BETWEEN EACH TERMINAL
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 >> GO TO 2.
NG >> Check ignition signal circuit for engine control. Refer to EC-417, "
IGNITION SIGNAL" .
Termi-
nal No.Wire color Item ConditionJudgement stan-
dard
(Approx.)
39 L/OREngine speed sig-
naland Refer to EC-95, "
ECM INSPECTION TABLE" .—

DTC P0725 ENGINE SPEED SIGNAL
AT-123
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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 connector 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-95, "
ECM
INSPECTION TABLE" .
SCIA3265E

AT-124
[EURO-OBD]
DTC P0725 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 terminal and TCM
connector terminal.
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 AT- 11 9 , "
DTC Confirmation Procedure" .
OK or NG
OK >>INSPECTION END
NG >> 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