Nissan Murano. Instruction — part 1389
TM-98
< DTC/CIRCUIT DIAGNOSIS >
[CVT: RE0F09B]
P1740 SELECT SOLENOID
P1740 SELECT SOLENOID
Description
INFOID:0000000009719511
• The lock-up select solenoid valve controls lock-up clutch pressure or forward clutch pressure (reverse brake
pressure).
• When controlling lock-up clutch, the valve is turned OFF. When controlling forward clutch, it is turned ON.
DTC Logic
INFOID:0000000009719512
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
CAUTION:
Always drive vehicle at a safe speed.
NOTE:
Immediately after performing any “DTC CONFIRMATION PROCEDURE”, always turn ignition switch OFF.
Then wait at least 10 seconds before performing the next test.
1.
CHECK DTC DETECTION
With CONSULT
1.
Turn ignition switch ON.
2.
Select “Data Monitor” in “TRANSMISSION”.
3.
Start engine and maintain the following conditions for at least 5 consecutive seconds.
With GST
Follow the procedure “With CONSULT”.
Is “P1740” detected?
YES
>> Go to
NO
>> Check intermittent incident. Refer to
GI-44, "Intermittent Incident"
.
Diagnosis Procedure
INFOID:0000000009719513
1.
CHECK LOCK-UP SELECT SOLENOID VALVE CIRCUIT
1.
Turn ignition switch OFF.
2.
Disconnect TCM connector.
3.
Check resistance between TCM vehicle side harness connector terminal and ground.
Is the inspection result normal?
YES
>> GO TO 5.
NO
>> GO TO 2.
2.
CHECK HARNESS BETWEEN TCM AND CVT UNIT (LOCK-UP SELECT SOLENOID VALVE) (PART 1)
1.
Disconnect CVT unit connector.
2.
Check continuity between TCM vehicle side harness connector terminal and CVT unit vehicle side har-
ness connector terminal.
DTC
Trouble diagnosis name
DTC is detected if...
Possible cause
P1740
Lock-up Select Solenoid
Valve Circuit
• Normal voltage is not applied to solenoid
due to cut line, short, etc.
• TCM detects as irregular by comparing
target value with monitor value.
• Harness or connectors
(Solenoid circuit is open or shorted.)
• Lock-up select solenoid valve
RANGE
: “D”, “N” and “L” position
(At each time, wait for 5 seconds.)
TCM vehicle side harness connector
Ground
Resistance (Approx.)
Connector
Terminal
F23
37
6.0 – 19.0
Ω
P1740 SELECT SOLENOID
TM-99
< DTC/CIRCUIT DIAGNOSIS >
[CVT: RE0F09B]
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Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Repair or replace damaged parts.
3.
CHECK HARNESS BETWEEN TCM AND CVT UNIT (LOCK-UP SELECT SOLENOID VALVE) (PART 2)
Check continuity between TCM vehicle side harness connector terminal and ground.
Is the inspection result normal?
YES
>> GO TO 4.
NO
>> Repair or replace damaged parts.
4.
CHECK LOCK-UP SELECT SOLENOID VALVE
Check lock-up select solenoid valve. Refer to
TM-99, "Component Inspection (Lock-up Select Solenoid
.
Is the inspection result normal?
YES
>> GO TO 5.
NO
>> Replace transaxle assembly. Refer to
5.
DETECT MALFUNCTIONING ITEMS
Check TCM connector pin terminals for damage or loose connection with harness connector.
Is the inspection result normal?
YES
NO
>> Repair or replace damaged parts.
Component Inspection (Lock-up Select Solenoid Valve)
INFOID:0000000009719514
1.
CHECK LOCK-UP SELECT SOLENOID VALVE
Check resistance between CVT unit connector terminal and ground.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Replace transaxle assembly. Refer to
TCM vehicle side harness connector
CVT unit vehicle side harness connector
Continuity
Connector
Terminal
Connector
Terminal
F23
37
F24
13
Existed
TCM vehicle side harness connector
Ground
Continuity
Connector
Terminal
F23
37
Not existed
CVT unit connector
Ground
Resistance (Approx.)
Connector
Terminal
F24
13
6.0 – 19.0
Ω
TM-100
< DTC/CIRCUIT DIAGNOSIS >
[CVT: RE0F09B]
P1745 LINE PRESSURE CONTROL
P1745 LINE PRESSURE CONTROL
Description
INFOID:0000000009719515
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.
DTC Logic
INFOID:0000000009719516
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
NOTE:
Immediately after performing any “DTC CONFIRMATION PROCEDURE”, always turn ignition switch OFF.
Then wait at least 10 seconds before performing the next test.
1.
CHECK DTC DETECTION
With CONSULT
1.
Turn ignition switch ON
2.
Select “Data Monitor” in “TRANSMISSION”.
3.
Make sure that output voltage of CVT fluid temperature sensor is within the range below.
Is “P1745” detected?
YES
>> Go to
NO
>> Check intermittent incident. Refer to
GI-44, "Intermittent Incident"
.
Diagnosis Procedure
INFOID:0000000009719517
1.
CHECK DTC
With CONSULT
1.
Start engine.
2.
Perform “Self Diagnostic Results” in “TRANSMISSION”.
Is “P1745” detected?
YES
NO
>> Check intermittent incident. Refer to
GI-44, "Intermittent Incident"
.
DTC
Trouble diagnosis name
DTC is detected if...
Possible cause
P1745
Line Pressure Control Circuit
TCM detects the unexpected line pressure.
TCM
ATF TEMP SEN
: 1.0 – 2.0 V
If out of range, drive the vehicle to decrease the voltage (warm up the fluid) or stop engine to increase the voltage (cool
down the fluid)
P1777 STEP MOTOR
TM-101
< DTC/CIRCUIT DIAGNOSIS >
[CVT: RE0F09B]
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P1777 STEP MOTOR
Description
INFOID:0000000009719518
The step motor changes the step by turning 4 coils ON/OFF according to the signal from TCM. As a result, the
flow of line pressure to primary pulley is changed and pulley ratio is controlled.
DTC Logic
INFOID:0000000009719519
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
CAUTION:
Always drive vehicle at a safe speed.
NOTE:
If “DTC CONFIRMATION PROCEDURE” has been previously performed, always turn ignition switch OFF.
Then wait at least 10 seconds before performing the next test.
1.
CHECK DTC DETECTION
With CONSULT
1.
Start engine.
2.
Drive vehicle for at least 5 consecutive seconds.
3.
Perform “Self Diagnostic Results” in “TRANSMISSION”.
With GST
Follow the procedure “With CONSULT”.
Is “P1777” detected?
YES
>> Go to
NO
>> Check intermittent incident. Refer to
GI-44, "Intermittent Incident"
.
Diagnosis Procedure
INFOID:0000000009719520
1.
CHECK STEP MOTOR CIRCUIT
1.
Turn ignition switch OFF.
2.
Disconnect TCM connector.
3.
Check resistance between TCM vehicle side harness connector terminals.
4.
Check resistance between TCM vehicle side harness connector terminals and ground.
Is the inspection result normal?
DTC
Trouble diagnosis name
DTC is detected if...
Possible cause
P1777
Step Motor Circuit
Each coil of the step motor is not energized
properly due to an open or a short.
• Harness or connectors
(Step motor circuit is open or shorted.)
• Step motor
TCM vehicle side harness connector
Resistance (Approx.)
Connector
Terminal
F23
27
28
30.0
Ω
29
30
TCM vehicle side harness connector
Ground
Resistance (Approx.)
Connector
Terminal
F23
27
15.0
Ω
28
29
30
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