Nissan Murano Z51. Manual - part 1436

 

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Nissan Murano Z51. Manual - part 1436

 

 

P1745 LINE PRESSURE CONTROL

TM-95

< DTC/CIRCUIT DIAGNOSIS >

[CVT: RE0F09B]

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P1745 LINE PRESSURE CONTROL

Description

INFOID:0000000005514053

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:0000000005514054

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-III

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 

TM-95, "Diagnosis Procedure"

.

NO

>> Check intermittent incident. Refer to 

GI-39, "Intermittent Incident"

.

Diagnosis Procedure

INFOID:0000000005514055

1.

CHECK DTC

With CONSULT-III

1.

Start engine.

2.

Perform “Self Diagnostic Results” in “TRANSMISSION”.

Is “P1745” detected?

YES

>> Replace TCM. Refer to 

TM-160, "Exploded View"

.

NO

>> Check intermittent incident. Refer to 

GI-39, "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)

TM-96

< DTC/CIRCUIT DIAGNOSIS >

[CVT: RE0F09B]

P1777 STEP MOTOR

P1777 STEP MOTOR

Description

INFOID:0000000005514056

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:0000000005514057

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-III

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-III”.
Is “P1777” detected?

YES

>> Go to 

TM-96, "Diagnosis Procedure"

.

NO

>> Check intermittent incident. Refer to 

GI-39, "Intermittent Incident"

.

Diagnosis Procedure

INFOID:0000000005514058

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 

29

30

TCM vehicle side harness connector

Ground

Resistance (Approx.)

Connector

Terminal

F23

27

15.0 

28

29

30

P1777 STEP MOTOR

TM-97

< DTC/CIRCUIT DIAGNOSIS >

[CVT: RE0F09B]

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YES

>> GO TO 5.

NO

>> GO TO 2.

2.

CHECK HARNESS BETWEEN TCM AND CVT UNIT (STEP MOTOR) (PART 1)

1.

Disconnect CVT unit connector.

2.

Check continuity between TCM vehicle side harness connector terminals and CVT unit vehicle side har-
ness connector terminals.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Repair or replace damaged parts.

3.

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

>> GO TO 4.

NO

>> Repair or replace damaged parts.

4.

CHECK STEP MOTOR

Check step motor. Refer to 

TM-97, "Component Inspection (Step Motor)"

.

Is the inspection result normal?

YES

>> GO TO 5.

NO

>> Replace transaxle assembly. Refer to 

TM-173, "Exploded View"

.

5.

DETECT MALFUNCTIONING ITEMS

Check TCM connector pin terminals for damage or loose connection with harness connector.

Is the inspection result normal?

YES

>> Replace TCM. Refer to 

TM-160, "Exploded View"

.

NO

>> Repair or replace damaged parts.

Component Inspection (Step Motor)

INFOID:0000000005514059

1.

CHECK STEP MOTOR

1.

Check resistance between CVT unit connector terminals.

TCM vehicle side harness connector

CVT unit vehicle side harness connector

Continuity

Connector

Terminal

Connector

Terminal

F23

27

F24

9

Existed

28

8

29

7

30

6

TCM vehicle side harness connector

Ground

Continuity

Connector

Terminal

F23

27

Not existed

28

29

30

CVT unit connector

Resistance (Approx.)

Connector

Terminals

F24

6

7

30.0 

8

9

TM-98

< DTC/CIRCUIT DIAGNOSIS >

[CVT: RE0F09B]

P1777 STEP MOTOR

2.

Check resistance between CVT unit connector terminals and ground.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Replace transaxle assembly. Refer to 

TM-173, "Exploded View"

.

CVT unit connector

Ground

Resistance (Approx.)

Connector

terminal

F24

6

15.0 

7

8

9

 

 

 

 

 

 

 

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