Nissan Maxima. Manual - part 1161

 

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Nissan Maxima. Manual - part 1161

 

 

TM-108

< DTC/CIRCUIT DIAGNOSIS >

[CVT: RE0F09B]

P1745 LINE PRESSURE CONTROL

P1745 LINE PRESSURE CONTROL

Description

INFOID:0000000010113681

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:0000000010113682

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. Check that output voltage of CVT fluid temperature sensor is within the range below.

Is “P1745” detected?

YES

>> Go to 

TM-108, "Diagnosis Procedure"

.

NO

>> Check intermittent incident. Refer to 

GI-41, "Intermittent Incident"

.

Diagnosis Procedure

INFOID:0000000010113683

1.

CHECK DTC

With CONSULT

1. Start engine.

2. Perform “Self Diagnostic Results” in “TRANSMISSION”.
Is “P1745” detected?

YES

>> Replace TCM. Refer to 

TM-168, "Exploded View"

.

NO

>> Check intermittent incident. Refer to 

GI-41, "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-109

< DTC/CIRCUIT DIAGNOSIS >

[CVT: RE0F09B]

C

E

F

G

H

I

J

K

L

M

A

B

TM

N

O

P

P1777 STEP MOTOR

Description

INFOID:0000000010113684

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:0000000010113685

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. 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 

TM-109, "Diagnosis Procedure"

.

NO

>> Check intermittent incident. Refer to 

GI-41, "Intermittent Incident"

.

Diagnosis Procedure

INFOID:0000000010113686

Regarding Wiring Diagram information, refer to 

TM-126, "Wiring Diagram"

.

1.

CHECK STEP MOTOR CIRCUIT

1. Turn ignition switch OFF.

2. Disconnect TCM connector.

3. Check resistance between TCM vehicle side harness connector

terminals.

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

F15

27

28

30.0 

29

30

AWDIA0148ZZ

TM-110

< DTC/CIRCUIT DIAGNOSIS >

[CVT: RE0F09B]

P1777 STEP MOTOR

4. Check resistance between TCM vehicle side harness connector

terminals and ground.

Is the inspection result normal?

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 harness connector termi-

nals.

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 ter-

minals 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-111, "Component Inspection (Step Motor)"

.

Is the inspection result normal?

YES

>> GO TO 5.

NO

>> Replace transaxle assembly. Refer to 

TM-188, "Exploded View"

.

5.

DETECT MALFUNCTIONING ITEMS

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

TCM vehicle side harness connector

Ground

Resistance 

(Approx.)

Connector

Terminal

F15

27

15.0 

28

29

30

AWDIA0149ZZ

TCM vehicle side harness 

connector

CVT unit vehicle side harness 

connector

Continuity

Connector

Terminal

Connector

Terminal

F15 (A)

27

F46 (B)

9

Existed

28

8

29

7

30

6

AWDIA0150ZZ

TCM vehicle side harness connector

Ground

Continuity

Connector

Terminal

F15

27

Not existed

28

29

30

AWDIA0149ZZ

P1777 STEP MOTOR

TM-111

< DTC/CIRCUIT DIAGNOSIS >

[CVT: RE0F09B]

C

E

F

G

H

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L

M

A

B

TM

N

O

P

Is the inspection result normal?

YES

>> Replace TCM. Refer to 

TM-168, "Exploded View"

.

NO

>> Repair or replace damaged parts.

Component Inspection (Step Motor)

INFOID:0000000010113687

1.

CHECK STEP MOTOR

1. Check resistance between CVT unit connector terminals.

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-188, "Exploded View"

.

CVT unit connector

Resistance 

(Approx.)

Connector

Terminals

F46

6

7

30.0 

8

9

AWDIA0151ZZ

CVT unit connector

Ground

Resistance 

(Approx.)

Connector

terminal

F46

6

15.0 

7

8

9

AWDIA0152ZZ

 

 

 

 

 

 

 

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