Nissan Maxima. Manual - part 1153

TM-76

< DTC/CIRCUIT DIAGNOSIS >

[CVT: RE0F09B]

P0776 PRESSURE CONTROL SOLENOID B

YES

>> GO TO 3.

NO

>> Replace transaxle assembly. Refer to 

TM-188, "Exploded View"

.

3.

CHECK LINE PRESSURE SOLENOID VALVE

Check line pressure solenoid valve. Refer to 

TM-76, "Component Inspection (Line Pressure Solenoid Valve)"

.

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> Replace transaxle assembly. Refer to 

TM-188, "Exploded View"

.

4.

CHECK SECONDARY PRESSURE SENSOR SYSTEM

Check secondary pressure sensor system. Refer to 

TM-85, "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-188, "Exploded View"

.

NO

>> Repair or replace damaged parts.

Component Inspection (Line Pressure Solenoid Valve)

INFOID:0000000010113632

1.

CHECK LINE PRESSURE 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 

TM-188,

"Exploded View"

.

Component Inspection (Secondary Pressure Solenoid Valve)

INFOID:0000000010113633

1.

CHECK SECONDARY PRESSURE 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 

TM-188,

"Exploded View"

.

CVT unit connector

Ground

Resistance 

(Approx.)

Connector

Terminal

F46

2

3.0 – 9.0 

Ω

SCIA4686E

CVT unit connector

Ground

Resistance 

(Approx.)

Connector

Terminal

F46

3

3.0 – 9.0 

Ω

AWDIA0123ZZ

P0778 PRESSURE CONTROL SOLENOID B

TM-77

< DTC/CIRCUIT DIAGNOSIS >

[CVT: RE0F09B]

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P0778 PRESSURE CONTROL SOLENOID B

Description

INFOID:0000000010113634

The 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:0000000010113635

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

3. Perform “Self Diagnostic Results” in “TRANSMISSION”.

With GST

Follow the procedure “With CONSULT”.
Is “P0778” detected?

YES

>> Go to 

TM-77, "Diagnosis Procedure"

.

NO

>> Check intermittent incident. Refer to 

GI-41, "Intermittent Incident"

.

Diagnosis Procedure

INFOID:0000000010113636

Regarding Wiring Diagram information, refer to 

TM-126, "Wiring Diagram"

.

1.

CHECK SECONDARY PRESSURE 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 SECONDARY PRESSURE SOLENOID VALVE (PART 1)

DTC

Trouble diagnosis name

DTC is detected if...

Possible cause

P0778

Pressure Control Solenoid B 
Electrical

• 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.)

• Secondary pressure solenoid valve

TCM vehicle side harness connector

Ground

Resistance 

(Approx.)

Connector

Terminal

F15

39

3.0 – 9.0 

Ω

AWDIA0124ZZ

TM-78

< DTC/CIRCUIT DIAGNOSIS >

[CVT: RE0F09B]

P0778 PRESSURE CONTROL SOLENOID B

1. Disconnect CVT unit connector.

2. Check continuity between TCM vehicle side harness connector

terminal and CVT unit vehicle side harness connector terminal.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Repair or replace damaged parts.

3.

CHECK HARNESS BETWEEN TCM AND SECONDARY PRESSURE SOLENOID VALVE (PART 2)

Check continuity between TCM vehicle side harness connector ter-

minal and ground.

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> Repair or replace damaged parts.

4.

CHECK SECONDARY PRESSURE SOLENOID VALVE

Check secondary pressure solenoid valve. Refer to 

TM-78, "Component Inspection (Secondary Pressure

Solenoid Valve)"

.

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.
Is the inspection result normal?

YES

>> Replace TCM. Refer to 

TM-168, "Exploded View"

.

NO

>> Repair or replace damaged parts.

Component Inspection (Secondary Pressure Solenoid Valve)

INFOID:0000000010113637

1.

CHECK SECONDARY PRESSURE 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 

TM-188,

"Exploded View"

.

TCM vehicle side harness 

connector

CVT unit vehicle side harness 

connector

Continuity

Connector

Terminal

Connector

Terminal

F15 (A)

39

F46 (B)

3

Existed

AWDIA0125ZZ

TCM vehicle side harness connector

Ground

Continuity

Connector

Terminal

F15

39

Not existed

AWDIA0124ZZ

CVT unit connector

Ground

Resistance 

(Approx.)

Connector

Terminal

F46

3

3.0 – 9.0 

Ω

AWDIA0123ZZ

P0826 UP AND DOWN SHIFT SW

TM-79

< DTC/CIRCUIT DIAGNOSIS >

[CVT: RE0F09B]

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P0826 UP AND DOWN SHIFT SW

Description

INFOID:0000000010113638

Manual mode switch is installed in CVT shift selector.

Manual mode switch transmits signals (manual mode, not manual mode, shift up and shift down) to combina-

tion meter.

Paddle shifter transmits signals (shift up and shift down) to combination meter. (With paddle shifter)

Combination meter transmits signals (manual mode, not manual mode, shift up and shift down) to TCM with

CAN communication signal.

DTC Logic

INFOID:0000000010113639

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. Turn ignition switch ON.

2. Select “Data Monitor” in “TRANSMISSION”.

3. Drive vehicle and maintain the following conditions for at least 2 consecutive seconds.

Is “P0826” detected?

YES

>> Go to 

TM-79, "Diagnosis Procedure"

.

NO

>> Check intermittent incident. Refer to 

GI-41, "Intermittent Incident"

.

Diagnosis Procedure

INFOID:0000000010113640

Regarding Wiring Diagram information, refer to 

TM-126, "Wiring Diagram"

.

1.

CHECK MANUAL MODE SWITCH SIGNALS

With CONSULT

1. Turn ignition switch ON.

2. Select “Data Monitor” in “TRANSMISSION”.

3. Check the On/Off operations of each monitor item.

DTC

Trouble diagnosis name

DTC is detected if...

Possible cause

P0826

Up and Down Shift Switch 
Circuit

• When an impossible pattern of switch sig-

nals is detected, a malfunction is detect-
ed.

• When shift up/down signal of paddle 

shifter continuously remains ON for 60 
seconds.

• Harness or connectors
- (The  circuit of these switches are open or 

shorted.)

- (TCM, and combination meter circuit are 

open or shorted.)

- (CAN communication line is open or 

shorted.)

• Manual mode select switch (Built into CVT 

shift selector)

• Manual mode position select switch (Built 

into CVT shift selector)

• Paddle shifter

MMODE

: On