Nissan Cube. Instruction — part 975
TM-156
< DTC/CIRCUIT DIAGNOSIS >
[CVT: RE0F08B]
P1740 SELECT SOLENOID
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Lock-up select solenoid valve is malfunctioning. Replace transaxle assembly. Refer to
.
CVT unit harness connector
Ground
Condition
Resistance (Approx.)
Connector
Terminal
F24
13
CVT fluid temperature: 20
°
C (68
°
F)
12.3 – 13.5
Ω
CVT fluid temperature: 50
°
C (122
°
F)
13.7 – 15.1
Ω
CVT fluid temperature: 80
°
C (176
°
F)
15.1 – 16.7
Ω
P1777 STEP MOTOR
TM-157
< DTC/CIRCUIT DIAGNOSIS >
[CVT: RE0F08B]
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P1777 STEP MOTOR
Description
INFOID:0000000009949034
• Step motor changes step by turning 4 coils ON or OFF according to signal from TCM.
• By changing step, step motor controls outward flow and inward flow of line pressure to primary pulley, deter-
mines the primary pulley position, and controls gear ratio.
DTC Logic
INFOID:0000000009949035
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
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 “RANGE” and “VEHICLE SPEED”.
4.
Maintain the following conditions for 1 seconds or more.
5.
Stop the vehicle.
6.
Select “Self Diagnostic Results” in “TRANSMISSION”.
With GST
Follow the procedure “With CONSULT”.
Is “P1777” detected?
YES
>> Go to
NO
>> INSPECTION END
Diagnosis Procedure
INFOID:0000000009949036
1.
CHECK STEP MOTOR CIRCUIT (PART 1)
1.
Turn ignition switch OFF.
2.
Disconnect TCM connector.
3.
Check resistance between TCM vehicle side harness connector terminals.
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> GO TO 3.
DTC
Trouble diagnosis name
DTC is detected if...
Possible cause
P1777
Step Motor Circuit
• Step motor monitor value is OFF when step
motor command value of TCM is ON
• Step motor monitor value is ON when step
motor command value of TCM is OFF
• Harness or connectors
(Step motor circuit is open or shorted.)
• Step motor
RANGE
: D
VEHICLE SPEED
: More than 20 km/h (12 MPH)
TCM vehicle side harness connector
Resistance (Approx.)
Connector
Terminal
E18
11
12
30.0
Ω
20
21
TM-158
< DTC/CIRCUIT DIAGNOSIS >
[CVT: RE0F08B]
P1777 STEP MOTOR
2.
CHECK STEP MOTOR CIRCUIT (PART 2)
Check resistance between TCM vehicle side harness connector terminals and ground.
Is the inspection result normal?
YES
>> Check intermittent incident. Refer to
GI-40, "Intermittent Incident"
.
NO
>> GO TO 3.
3.
CHECK STEP MOTOR
1.
Disconnect CVT unit connector.
2.
Check step motor. Refer to
TM-158, "Component Inspection (Step Motor)"
.
Is the inspection result normal?
YES
>> GO TO 4.
NO
>> Step motor is malfunctioning. Replace transaxle assembly. Refer to
4.
CHECK HARNESS BETWEEN TCM AND CVT UNIT (STEP MOTOR) (PART 1)
Check continuity between TCM vehicle side harness connector terminals and CVT unit vehicle side harness
connector terminals.
Is the inspection result normal?
YES
>> GO TO 5.
NO
>> Repair or replace damaged parts.
5.
CHECK HARNESS BETWEEN TCM AND CVT UNIT (STEP MOTOR) (PART 2)
Check continuity between TCM vehicle side harness connector terminals and ground.
Is the inspection result normal?
YES
>> Check intermittent incident. Refer to
GI-40, "Intermittent Incident"
.
NO
>> Repair or replace damaged parts.
Component Inspection (Step Motor)
INFOID:0000000009949037
1.
CHECK STEP MOTOR (PART 1)
Check resistance between CVT unit harness connector terminals.
TCM vehicle side harness connector
Ground
Resistance (Approx.)
Connector
Terminal
E18
11
15.0
Ω
12
20
21
TCM vehicle side harness connector
CVT unit vehicle side harness connector
Continuity
Connector
Terminal
Connector
Terminal
E18
11
F24
6
Existed
12
7
20
8
21
9
TCM vehicle side harness connector
Ground
Continuity
Connector
Terminal
E18
11
Not existed
12
20
21
P1777 STEP MOTOR
TM-159
< DTC/CIRCUIT DIAGNOSIS >
[CVT: RE0F08B]
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Is the inspection result normal?
YES
>> GO TO 2.
NO
>> Step motor is malfunctioning. Replace transaxle assembly. Refer to
2.
CHECK STEP MOTOR (PART 2)
Check resistance between CVT unit connector terminals and ground.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Step motor is malfunctioning. Replace transaxle assembly. Refer to
CVT unit connector
Resistance (Approx.)
Connector
Terminal
F24
6
7
30.0
Ω
8
9
CVT unit connector
Ground
Resistance (Approx.)
Connector
Terminal
F24
6
15.0
Ω
7
8
9
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