Nissan Murano: Dtc/circuit Diagnosis / P0776 Pressure Control Solenoid B

Nissan Murano (Z52) 2015-2024 Service Manual / Transmission & Driveline / Transaxle & Transmission :: Cvt: Re0f10j / Dtc/circuit Diagnosis / P0776 Pressure Control Solenoid B

DTC Description

DTC DETECTION LOGIC

DTC

CONSULT screen terms

(Trouble diagnosis content) 		DTC detection condition
P0776

PC SOLENOID B

(Pressure Control Solenoid “B” Performance/Stuck Off) 		1 Diagnosis condition

When all of the following conditions are satisfied:

  • DTC other than the applicable DTC is not detected.

  • Engine speed: More than 625 rpm

  • Shift position: Other than P/N position

  • CVT fluid temperature: More than -20°C (-4°F)

  • TCM power supply: More than 11 V

  • The difference between instruction pressure of secondary pressure and 10-msec-ago instruction secondary pressure is 0 MPa or more

  • Instruction pressure of secondary pressure: 0 MPa or more
Signal —
Threshold

  1. When the following condition is satisfied and this state is maintained for 5.5 seconds:

    • Actuatl secondary pressure - Instruction pressure of secondary pressure: 1.2 MPa or more

  2. After the above condition "1" is satisfied:

    Actuatl secondary pressure - Instruction pressure of secondary pressure: 1.2 MPa or more
Diagnosis delay time Maintained for 10 seconds or more
2 Diagnosis condition

When all of the following conditions are satisfied:

  • DTC other than the applicable DTC is not detected.

  • Engine speed: More than 625 rpm

  • Shift position: Other than P/N position

  • CVT fluid temperature: More than -20°C (-4°F)

  • TCM power supply: More than 11 V

  • The difference between instruction pressure of secondary pressure and 10-msec-ago instruction secondary pressure is 0 MPa or more

  • Instruction pressure of secondary pressure: 0 MPa or more
Signal —
Threshold

  1. When the following condition "a" is satisfied twice in the same DC:

    • a. When all of the following condition a-1 to a-4 are satisfied and this state is maintained for 1.52 seconds:

      • a-1. Instruction pressure of secondary pressure - Actual secondary pressure: 0.25 MPa or more

      • a-2.Actual secondary pressure - low limit of oil level: Less than 0 MPa

      • a-3. Current accelerator pedal position - Accelerator pedal position when all conditions of the diagnosis condition and above condition a-1 to a-2 are met : Less than 5 deg

      • a-4: Current Nissan Murano vehicle speed - Vehicle speed when all conditions of the diagnosis condition and above condition a-1 to a-2 are met: Less than 15 km/h (9 MPH)

  2. After the above condition "1" is satisfied:

    • Instruction pressure of secondary pressure - Actuatl secondary pressure: 1.2 MPa or more
Diagnosis delay time Maintained for 10 seconds or more
3 Diagnosis condition

When all of the following conditions are satisfied:

  • DTC other than the applicable DTC is not detected.

  • Engine speed: More than 625 rpm

  • Shift position: Other than P/N position

  • CVT fluid temperature: More than -20°C (-4°F)

  • TCM power supply: More than 11 V

  • The difference between instruction pressure of secondary pressure and 10-msec-ago instruction secondary pressure is 0 MPa or more

  • Instruction pressure of secondary pressure: 0 MPa or more
Signal —
Threshold

  1. When all of the following condition b-1 to b-3 are satisfied and this state is maintained for 1 second:

    • b-1. Instruction pressure of secondary pressure - Actual secondary pressure: 0.25 MPa or more

    • b-2. Actual secondary pressure - low limit of oil level: Less than 0 MPa

    • b-3. MIN ( Minimum necessary oil pressure - Actual secondary pressure, Target secondary pressure - Actual secondary pressure ): 2 MPa or more

  2. After the above condition "1" is satisfied:

    • Instruction pressure of secondary pressure - Actuatl secondary pressure: 1.2 MPa or more
Diagnosis delay time Maintained for 10 seconds or more
 
 
 

POSSIBLE CAUSE

  • Secondary pressure solenoid valve (Control valve)

  • CVT chain

FAIL-SAFE

  • When a malfunction occurs on the low oil pressure side

    • Selector shock is large

    • Start is slow

    • Acceleration is slow

    • Lock-up is not performed

    • Nissan Murano Vehicle speed is not increased

  • When a malfunction occurs on the high oil pressure side

    • Selector shock is large

    • Start is slow

    • Acceleration is slow

    • Lock-up is not performed

DTC Confirmation Procedure

CAUTION:

Always drive vehicle at a safe speed.

The MIL is ON and ONLY DTC P0776 (PC SOLENOID B - Pressure Control Solenoid “B” Performance/Stuck OFF) is stored in the TCM.

NOTE:

If this issue should occur, the vehicle may hesitate and/or have a lack of power.

CHECK DTC PRIORITY

When DTC P0776 is displayed together with P17F0, diagnose first the P17F0.

Is "P17F0" detected?

YES>>

Perform diagnosis of P17F0. Refer to Diagnosis Procedure.

NO>>

GO TO 2.

PREPARATION BEFORE WORK

If another “DTC CONFIRMATION PROCEDURE” occurs just before, turn ignition switch OFF and wait for at least 10 seconds, then perform the next test.

>>

GO TO 3.

CHECK DTC DETECTION

  1. Start the engine.

  2. Drive the Nissan Murano vehicle.

  3. Maintain the following condition for 20 seconds or more.

    Selector lever : “D” position
    Nissan Murano Vehicle speed : 40 km/h (25 MPH) or more
    Accelerator pedal position : 1.0/8 or more

  4. Stop the Nissan Murano vehicle.

  5. Check the first trip DTC.

Is “P0776” detected?

YES>>

Go to Diagnosis Procedure.

NO-1>>

To check malfunction symptom before repair: Refer to Intermittent Incident.

NO-2>>

Confirmation after repair: INSPECTION END

Diagnosis Procedure

INSPECT CVT CHAIN

Inspect the CVT chain. Refer to Component Inspection.

Is CVT chain OK?

YES>>

GO TO 2.

NO>>

GO TO 3.

INSTALL NEW CONTROL VALVE

Install new control valve. Refer to Removal and Installation.

>>

WORK END

REPLACE SUB-ASSEMBLY AND INSTALL NEW CONTROL VALVE

Replace sub-assembly and install new control valve. Refer to Disassembly & Assembly.

>>

WORK END

Component Inspection

CVT CHAIN BELT INSPECTION

CAUTION:

Never allow any chemicals or fluids other than NS-3 CVT fluid or equivalent to enter the CVT assembly. Never allow any foreign debris, dust, dirt, etc. to enter the CVT assembly.

NOTE:

Before lifting the vehicle:

  • Place the transmission gear selector in Neutral.

  • Leave the driver door unlatched.

  1. Remove the control valve. Refer to Removal and Installation.

  2. Secure the right front tire with a suitable strap . This will assist in making the chain belt turn.

  3. Mark the left front tire with a suitable marking. This will ensure all 360° of the chain belt is inspected.

  4. Using borescope J-51951 with mirror attachment, visually inspect the entirety of the two sides of the chain belt that come in contact with the pulleys . Slowly and carefully turn the left front tire one full turn in the forward rotation to view all of the chain belt.

    Guide rail
    : Front

    CAUTION:

    If the tire is rotated in the rearward rotation, the camera lens may get caught between the chain belt and the pulley.

    NOTE:

    • Be sure to remove the protective film from the mirror before the first use.

    • Clean the camera lens and mirror before each inspection. Use 90% isopropyl alcohol, and a lens swab from Lens Swab packet J-51963.

    • Before inspecting, make sure the camera handle’s AA batteries are fresh and the LCD monitor’s battery is charged.

    1. Route the camera cable past the primary pulley and position the camera lens behind the plastic guide. See figure below.

      NOTE:

      For best picture, position camera lens 10mm away from chain belt.

      Chain belt Camera cable Secondary pulley
      Plastic guide Primary pulley : Front

    2. First inspect the entire 360° of the driver side of the chain belt that comes in contact with the pulley. Refer to figures below for examples of normal and excessive wear patterns.

      Pulley
      Guide rail
      Camera flexible tube
      Chain belt

      NOTE:

      • Insert the camera lens behind the pulley past the guide rail and between the chain belt and the CVT case.

      • Insert the lens approximately 8-9 inches, and then view the side of the chain belt that contacts the pulley.

      • Holding the borescope with one hand allows for turning the tire with the other hand.

    3. If the inspection result is OK on all 360° of the driver side, inspect all 360° of the passenger side of the chain belt. Refer to figures below for examples of normal and excessive wear patterns.

      Chain belt
      Pulley
      Camera flexible tube
      Guide rail

CHAIN BELT WEAR PATTERNS

Examples of OK (normal) wear patterns.

  • Chain contact surfaces appear smooth.

Examples of NG (abnormal) wear patterns.

  • Chain contact surfaces show visible scuffing.

    P0746 Pressure Control Solenoid a

    DTC Description DTC DETECTION LOGIC DTC CONSULT screen terms (Trouble diagnosis content) DTC detection condition P0746 PC SOLENOID A (Pressure Control Solenoid A Performance/Stuck Off) 1 Diagnosis condition When all of the following conditions are satisfied: Engine speed: More than 600 rpm Primary pulley speed: More than 450 rpm Idle is not being detected...

    P0778 Pressure Control Solenoid B

    DTC Description DTC DETECTION LOGIC DTC CONSULT screen terms (Trouble diagnosis content) DTC detection condition P0778 PC SOLENOID B (Pressure Control Solenoid “B” Electrical) Diagnosis condition TCM power supply voltage: More than 11 V Signal — Threshold TCM judges that solenoid valve circuit is shorted to ground Diagnosis delay time Maintained for 1 second POSSIBLE CAUSE Harness or connector (Secondary pressure solenoid valve circuit is shorted to ground) Secondary pressure solenoid valve FAIL-SAFE Selector shock is large Start is slow Acceleration is slow Lock-up is not performed DTC Confirmation Procedure CAUTION: Always drive vehicle at a safe speed...

    Other information:

    Nissan Murano (Z52) 2015-2024 Service Manual: I-Li


    System Description SYSTEM DIAGRAMADAS CONTROL UNIT INPUT/OUTPUT SIGNAL ITEMInput Signal Item Transmit unit Signal name Description ECM CAN communication Brake pedal position switch signal Receives Brake pedal position switch state Accelerator pedal position signal Receives accelerator pedal position (angle) Stop lamp switch signal Receives stop lamp switch state Engine speed signal Receives engine speed TCM CAN communication Input speed signal Receives the number of revolutions of input shaft Current gear position signal Receives a current gear position Shift position signal Receives a selector lever position Output shaft revolution signal Receives the number of revolutions of output shaft ABS actuator and electric unit (control unit) CAN communication ABS malfunction signal Receives a malfunction state of ABS ABS operation signal Receives an operational state of ABS TCS malfunction signal Receives a malfunction state of TCS TCS operation signal Receives an operational state of TCS VDC OFF switch signal Receives an ON/OFF state of VDC VDC malfunction signal Receives a malfunction state of VDC VDC operation signal Receives an operational state of VDC Nissan Murano Vehicle speed signal (ABS) Receives wheel speeds of four wheels Yaw rate signal Receives yaw rate acting on the Nissan Murano vehicle Side G sensor signal Receives lateral G acting on the Nissan Murano vehicle Combination meter CAN communication Parking brake switch signal Receives an operational state of the parking brake System selection signal Receives a selection state of each item in "Driver Assistance" BCM CAN communication Turn indicator signal Receives an operational state of the turn signal lamp and the hazard lamp Steering angle sensor CAN communication Steering angle sensor malfunction signal Receives a malfunction state of steering angle sensor Steering angle sensor signal Receives the number of revolutions, turning direction of the steering wheel Steering angle speed signal Receives the turning angle speed of the steering wheel Lane intervention switch Lane intervention switch signal Receives an ON/OFF state of the lane intervention switch Lane camera unit ITS communication Detected lane condition signal Receives detection results of lane marker Output Signal Item Reception unit Signal name Description ABS actuator and electric unit (control unit) CAN communication Target yaw moment signal Transmits a target yaw moment signal to generate yaw moment to the Nissan Murano vehicle Combination meter CAN communication Intelligent Lane Intervention ON indicator lamp signal Transmits an Intelligent Lane Intervention ON indicator lamp signal to turn ON the Intelligent Lane Intervention ON indicator lamp Lane departure warning lamp signal Transmits an lane departure warning lamp signal to turn ON the lane departure warning lamp Lane camera unit ITS communication Nissan Murano Vehicle speed signal Transmits a vehicle speed calculated by the ADAS control unit Turn indicator signal Transmits a turn indicator signal received from BCM Steering assist system ON indicator Steering assist system ON indicator signal Turns ON the steering assist system ON indicator Intelligent Lane Intervention system ON indicator Intelligent Lane Intervention system ON indicator signal Turns ON the Intelligent Lane Intervention system ON indicator Warning system buzzer Warning buzzer signal Activates warning system buzzer...

    Nissan Murano (Z52) 2015-2024 Service Manual: Parking Brake System


    Inspection and Adjustment INSPECTIONPedal StrokeOperate the parking brake pedal with a force of 196 N (20.0 kg-f, 44.1 lb-f). Check that the pedal stroke is within the specified number of notches. (Check it by listening to the clicks of the ratchet.) Number of notches : Refer to Parking Brake Control...

    Categories

    LATCH (Lower Anchors and Tethers for CHildren) system

    Nissan Murano. LATCH (Lower Anchors and Tethers for CHildren) system

    LATCH system lower anchor locations - bench seat

    Your vehicle is equipped with special anchor points that are used with LATCH system compatible child restraints. This system may also be referred to as the ISOFIX or ISOFIX compatible system. With this system, you do not have to use a vehicle seat belt to secure the child restraint unless the combined weight of the child and child restraint exceeds 65 lbs. (29.5 kg). If the combined weight of the child and child restraint is greater than 65 lbs. (29.5 kg), use the vehicle’s seat belt (not the lower anchors) to install the child restraint. Be sure to follow the child restraint manufacturer’s instructions for installation.

    read more

     
    Copyright © 2026 www.nimurano.com