Nissan Cube. Instruction — part 966
TM-120
< DTC/CIRCUIT DIAGNOSIS >
[CVT: RE0F08B]
P0720 OUTPUT SPEED SENSOR
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> GO TO 5.
2.
CHECK TCM INPUT SIGNAL
1.
Turn ignition switch OFF.
2.
Connect secondary speed sensor connector.
3.
Lift the vehicle.
4.
Start the engine.
5.
Check frequency of secondary speed sensor.
Is the inspection result normal?
YES
>> GO TO 8.
NO
>> GO TO 3.
3.
CHECK HARNESS BETWEEN TCM AND SECONDARY SPEED SENSOR (PART 1)
1.
Turn ignition switch OFF.
2.
Disconnect TCM connector and secondary speed sensor connector.
3.
Check continuity between TCM vehicle side harness connector terminals and secondary speed sensor
vehicle side harness connector terminals.
Is the inspection result normal?
YES
>> GO TO 4.
NO
>> Repair or replace damaged parts.
4.
CHECK HARNESS BETWEEN TCM AND SECONDARY SPEED SENSOR (PART 2)
Check continuity between TCM vehicle side harness connector terminals and ground.
Is the inspection result normal?
YES
>> GO TO 8.
NO
>> Repair or replace damaged parts.
Secondary speed sensor vehicle side harness connector
Ground
Voltage (Approx.)
Connector
Terminal
F19
3
Battery voltage
TCM connector
Condition
Data (Approx.)
Connector
Terminal
E19
29
42
• Selector lever: “L” position
• While driving at 20 km/h (12 MPH)
570 Hz
JSDIA1305GB
TCM vehicle side harness connector
Secondary speed sensor vehicle side harness con-
nector
Continuity
Connector
Terminal
Connector
Terminal
E19
29
F19
2
Existed
42
1
TCM vehicle side harness connector
Ground
Continuity
Connector
Terminal
E19
29
Not existed
42
P0720 OUTPUT SPEED SENSOR
TM-121
< DTC/CIRCUIT DIAGNOSIS >
[CVT: RE0F08B]
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5.
CHECK HARNESS BETWEEN SECONDARY SPEED SENSOR (POWER) AND IPDM E/R (PART 1)
1.
Turn ignition switch OFF.
2.
Disconnect IPDM E/R connector.
3.
Check continuity between secondary speed sensor vehicle side harness connector terminal and IPDM E/
R vehicle side harness connector terminal.
Is the inspection result normal?
YES
>> GO TO 6.
NO
>> Repair or replace damaged parts.
6.
CHECK HARNESS BETWEEN SECONDARY SPEED SENSOR (POWER) AND IPDM E/R (PART 2)
Check continuity between secondary speed sensor vehicle side harness connector terminal and ground.
Is the inspection result normal?
YES
>> GO TO 7.
NO
>> Repair or replace damaged parts.
7.
DETECT MALFUNCTIONING ITEMS
Check the following.
• IPDM E/R
• 10A fuse (No.55, located in the IPDM E/R)
• Harness for short or open between IPDM E/R and ignition switch (Refer to
PG-33, "Wiring Diagram - IGNI-
.)
• Ignition switch
Is the inspection result normal?
YES
>> Check intermittent incident. Refer to
GI-40, "Intermittent Incident"
.
NO
>> Repair or replace damaged parts.
8.
CHECK INTERMITTENT INCIDENT
GI-40, "Intermittent Incident"
.
Is the inspection result normal?
YES
>> Replace secondary speed sensor. Refer to
NO
>> Repair or replace damaged parts.
Secondary speed sensor vehicle side harness con-
nector
IPDM E/R vehicle side harness connector
Continuity
Connector
Terminal
Connector
Terminal
F19
3
E15
58
Existed
Secondary speed sensor vehicle side harness connector
Ground
Continuity
Connector
Terminal
F19
3
Not existed
TM-122
< DTC/CIRCUIT DIAGNOSIS >
[CVT: RE0F08B]
P0725 ENGINE SPEED
P0725 ENGINE SPEED
Description
INFOID:0000000009948971
TCM receives engine speed signal from ECM via CAN communication.
DTC Logic
INFOID:0000000009948972
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
CAUTION:
Always drive vehicle at a safe speed.
1.
PRECONDITIONING
Immediately after performing any “DTC CONFIRMATION PROCEDURE”, always turn ignition switch OFF.
Then wait at least 10 seconds before performing the next test.
>> GO TO 2.
2.
PERFORM DTC CONFIRMATION PROCEDURE
With CONSULT
1.
Start the engine.
2.
Select “Data Monitor” in “TRANSMISSION”.
3.
Select “PRI SPEED SEN”.
4.
Drive the vehicle.
5.
Maintain the following conditions for 10 seconds or more.
6.
Stop the vehicle.
7.
Select “Self Diagnostic Results” in “TRANSMISSION”.
Is “P0725” detected?
YES
>> Go to
NO
>> INSPECTION END
Diagnosis Procedure
INFOID:0000000009948973
1.
CHECK DTC WITH ECM
With CONSULT
1.
Turn ignition switch ON.
2.
Perform “Self Diagnostic Results” in “ENGINE”.
Is the inspection result normal?
YES
>> Check intermittent incident. Refer to
GI-40, "Intermittent Incident"
.
NO
>> Check DTC detected item. Refer to
DTC
Trouble diagnosis name
DTC is detected if...
Possible cause
P0725
Engine Speed Input Circuit
• TCM detects a malfunction in CAN com-
munication between TCM and ECM
• When primary pulley speed is more than
1,000 rpm, engine speed (CAN signal) is
less than 450 rpm
• Harness or connectors
(CAN communication line is open or
shorted.)
(Engine speed signal circuit is open or
shorted.)
• ECM
PRI SPEED SEN
: More than 1,000 rpm
P0740 TORQUE CONVERTER
TM-123
< DTC/CIRCUIT DIAGNOSIS >
[CVT: RE0F08B]
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P0740 TORQUE CONVERTER
Description
INFOID:0000000009948974
• Torque converter clutch solenoid valve is installed to control valve.
• Torque converter clutch solenoid valve adjusts oil pump discharge pressure to an optimum level according to
the driving conditions.
• The adoption of an N/L type (normal low) torque converter clutch solenoid valve enables generation of a
control oil pressure when a voltage is not applied to the coil.
• Torque converter clutch solenoid valve is controlled by TCM according to signals transmitted from vehicle
speed sensor and accelerator pedal position sensor.
• Lock-up is prohibited when CVT fluid temperature is low.
• When accelerator pedal is depressed (throttle opening angle is less than 2.0/8) in the lock-up state, engine
speed does not suddenly change. If engine speed changes suddenly, lock-up is not applied.
DTC Logic
INFOID:0000000009948975
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
CAUTION:
Always drive vehicle at a safe speed.
1.
PRECONDITIONING (PART 1)
Immediately after performing any “DTC CONFIRMATION PROCEDURE”, always turn ignition switch OFF.
Then wait at least 10 seconds before performing the next test.
>> GO TO 2.
2.
PRECONDITIONING (PART 2)
With CONSULT
1.
Start the engine.
2.
Select “Data Monitor” in “TRANSMISSION”.
3.
Select “ATF TEMP SEN”.
Is “ATF TEMP SEN” value 2.17 V or less?
YES
>> GO TO 3.
NO
>> 1.
Warm up transaxle.
2.
GO TO 3.
3.
PERFORM DTC CONFIRMATION PROCEDURE
With CONSULT
1.
Start the engine.
2.
Select “Data Monitor” in “TRANSMISSION”.
3.
Select “VEHICLE SPEED”.
4.
Drive the vehicle.
5.
Maintain the following conditions for 5 seconds or more.
6.
Stop the vehicle.
DTC
Trouble diagnosis name
DTC is detected if...
Possible cause
P0740
Torque Converter Clutch Cir-
cuit/Open
• Torque converter clutch solenoid valve
monitor voltage value of TCM is less than
70% of torque converter clutch solenoid
valve target voltage value
• Torque converter clutch solenoid valve
current command value of TCM and
torque converter clutch solenoid valve
current monitor value is deviated
• Harness or connectors
(Torque converter clutch solenoid valve
circuit is open or shorted.)
• Torque converter clutch solenoid valve
VEHICLE SPEED
: More than 40 km/h (25 MPH)
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