Nissan Altima L32. Instruction — part 1452

TM-152

< COMPONENT DIAGNOSIS >

[CVT: RE0F09B]

P0776 PRESSURE CONTROL SOLENOID B PERFORMANCE (SEC PRESSURE

SOLENOID VALVE)

P0776 PRESSURE CONTROL SOLENOID B PERFORMANCE (SEC PRES-
SURE SOLENOID VALVE)

Description

INFOID:0000000004201711

The pressure control solenoid valve B (secondary pressure solenoid valve) regulates the secondary pressure

to suit the driving condition in response to a signal sent from the TCM.

DTC Logic

INFOID:0000000004201712

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. Turn ignition switch ON.

2. Select “DATA MONITOR”.

3. Start engine and maintain the following conditions for at least 30 consecutive seconds.

With GST

Follow the procedure “With CONSULT-III”.
Is “P0776 PRS CNT SOL/B FCTN” detected?

YES

>> Go to

TM-152, "Diagnosis Procedure"

.

NO

>> Check intermittent incident. Refer to

GI-42, "Intermittent Incident"

.

Diagnosis Procedure

INFOID:0000000004201713

1.

CHECK LINE PRESSURE

Perform line pressure test. Refer to

TM-247, "Inspection and Judgment"

.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Repair or replace damaged parts. Refer to

TM-247, "Inspection and Judgment"

.

2.

CHECK PRESSURE CONTROL SOLENOID VALVE B (SECONDARY PRESSURE SOLENOID VALVE)

1. Turn ignition switch OFF.

2. Disconnect CVT unit harness connector.

DTC

Item

(CONSULT-III screen term)

Malfunction is detected when...

Possible cause

P0776

PRS CNT SOL/B FCTN

Secondary pressure is too high or too low
compared with the commanded value while
driving.

• Harness or connectors

(Solenoid circuit is open or shorted.)

• Pressure control solenoid valve B (sec-

ondary pressure solenoid valve system)

• Transmission fluid pressure sensor A

(secondary pressure sensor)

• Line pressure control system

ATF TEMP SEN

: 1.0

− 2.0 V

ACC PEDAL OPEN

: More than 1.0/8

RANGE

: “D” position

VEHICLE SPEED

: 10 km/h (6 MPH) or more

Driving location

: Driving the vehicle uphill (increased engine load) will help maintain the driving
conditions required for this test.

P0776 PRESSURE CONTROL SOLENOID B PERFORMANCE (SEC PRESSURE

SOLENOID VALVE)

TM-153

< COMPONENT DIAGNOSIS >

[CVT: RE0F09B]

C

E

F

G

H

I

J

K

L

M

A

B

TM

N

O

P

3. Check pressure control solenoid valve B (secondary pressure solenoid valve). Refer to

TM-153, "Compo-

nent Inspection [Pressure Control Solenoid Valve B (Secondary Pressure Solenoid Valve)]"

.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Replace transaxle assembly. Refer to

TM-447, "Exploded View"

.

3.

CHECK PRESSURE CONTROL SOLENOID VALVE A (LINE PRESSURE SOLENOID VALVE)

Check pressure control solenoid valve A (line pressure solenoid valve). Refer to

TM-153, "Component Inspec-

tion [Pressure Control Solenoid Valve A (Line Pressure Solenoid Valve)]"

.

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> Replace transaxle assembly. Refer to

TM-259, "Exploded View"

.

4.

CHECK TRANSMISSION FLUID PRESSURE SENSOR A (SECONDARY PRESSURE SENSOR) SYS-

TEM

Check transmission fluid pressure sensor A (secondary pressure sensor) system. Refer to

TM-160, "DTC

Logic"

.

Is the inspection result normal?

YES

>> GO TO 5.

NO

>> Repair or replace damaged parts.

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-254, "Exploded View"

.

NO

>> Repair or replace damaged parts.

Component Inspection [Pressure Control Solenoid Valve A (Line Pressure Solenoid
Valve)]

INFOID:0000000004201714

1.

CHECK PRESSURE CONTROL SOLENOID VALVE A (LINE PRESSURE SOLENOID VALVE)

Check resistance between CVT unit terminal 2 and ground.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Replace transaxle assembly. Refer to

TM-259,

"Exploded View"

.

Component Inspection [Pressure Control Solenoid Valve B (Secondary Pressure So-
lenoid Valve)]

INFOID:0000000004201715

1.

CHECK PRESSURE CONTROL SOLENOID VALVE B (SECONDARY PRESSURE SOLENOID VALVE)

CVT unit terminal

Ground

Resistance (Approx.)

2

3.0 – 9.0

Ω

AWDIA0122ZZ

TM-154

< COMPONENT DIAGNOSIS >

[CVT: RE0F09B]

P0776 PRESSURE CONTROL SOLENOID B PERFORMANCE (SEC PRESSURE

SOLENOID VALVE)

Check resistance between CVT unit terminal 3 and ground.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Replace transaxle assembly. Refer to

TM-259,

"Exploded View"

.

CVT unit terminal

Ground

Resistance (Approx.)

3

3.0 – 9.0

Ω

AWDIA0123ZZ

P0778 PRESSURE CONTROL SOLENOID B ELECTRICAL (SEC PRESSURE

SOLENOID VALVE)

TM-155

< COMPONENT DIAGNOSIS >

[CVT: RE0F09B]

C

E

F

G

H

I

J

K

L

M

A

B

TM

N

O

P

P0778 PRESSURE CONTROL SOLENOID B ELECTRICAL (SEC PRES-
SURE SOLENOID VALVE)

Description

INFOID:0000000004201716

The pressure control solenoid valve B (secondary 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:0000000004201717

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 and maintain the following conditions for at least 5 consecutive seconds.

3. Perform “SELF-DIAG RESULTS” mode for “TRANSMISSION”.

With GST

Follow the procedure “With CONSULT-III”.
Is “P0778 PRS CNT SOL/B CIRC” detected?

YES

>> Go to

TM-155, "Diagnosis Procedure"

.

NO

>> Check intermittent incident. Refer to

GI-42, "Intermittent Incident"

.

Diagnosis Procedure

INFOID:0000000004201718

1.

CHECK PRESSURE CONTROL SOLENOID VALVE B (SECONDARY PRESSURE SOLENOID VALVE)

CIRCUIT

1. Turn ignition switch OFF.

2. Disconnect TCM harness connector.

3. Check resistance between TCM harness connector F16 terminal

39 and ground.

Is the inspection result normal?

YES

>> GO TO 5.

NO

>> GO TO 2.

2.

CHECK HARNESS BETWEEN TCM AND PRESSURE CONTROL SOLENOID VALVE B (SECONDARY

PRESSURE SOLENOID VALVE) (PART 1)

DTC

Item

(CONSULT-III screen term)

Malfunction is detected when...

Possible cause

P0778

PRS CNT SOL/B CIRC

• Normal voltage not applied to solenoid

due to cut line, short, or the like.

• TCM detects as irregular by comparing

target value with monitor value.

• Harness or connectors

(Solenoid circuit is open or shorted.)

• Pressure control solenoid valve B (sec-

ondary pressure solenoid valve)

TCM harness connector

Ground

Resistance (Ap-

prox.)

Connector

Terminal

F16

39

3.0 – 9.0

Ω

AWDIA0124ZZ