Nissan Murano: Dtc/circuit Diagnosis / P0778 Pressure Control Solenoid B
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
CAUTION:
Always drive vehicle at a safe speed.
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 2.
CHECK DTC DETECTION
-
Start the engine and wait for 5 seconds or more.
-
Check the first trip DTC.
Is “P0778” 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
CHECK CIRCUIT BETWEEN TCM AND CVT UNIT
-
Turn ignition switch OFF.
-
Disconnect TCM connector and CVT unit connector.
-
Check continuity between TCM harness connector terminal and ground.
TCM — Continuity Connector Terminal F25 39 Ground Not existed
Is the inspection result normal?
YES>>GO TO 2.
NO>>Repair or replace damaged parts.
CHECK CIRCUIT BETWEEN CUT UNIT AND GROUND
Check resistance between CVT unit harness connector terminal and ground.
| CVT unit | — | Condition | Resistance | |
|---|---|---|---|---|
| Connector | Terminal | |||
| F210 | 3 | Ground | CVT fluid temperature: 20°C (68°F) | 5.5 – 7.0 Ω |
| CVT fluid temperature: 50°C (122°F) | 6.0 – 8.0 Ω | |||
| CVT fluid temperature: 80°C (176°F) | 6.5 – 8.5 Ω | |||
Is the inspection result normal?
YES>>Check intermittent incident. Refer to Intermittent Incident.
NO>>GO TO 3.
CHECK CIRCUIT BETWEEN CVT UNIT AND CONTROL VALVE
-
Disconnect control valve connector. Refer to Removal and Installation.
-
Check continuity between CVT unit harness connector terminal and ground.
CVT unit — Continuity Connector Terminal F210 3 Ground Not existed
Is the inspection result normal?
YES>>GO TO 4.
NO>>Replace terminal cord assembly. Refer to Removal and Installation.
CHECK CIRCUIT BETWEEN CONTROL VALVE AND GROUND
Check resistance between control valve harness connector terminal and ground.
| Control valve | — | Condition | Resistance |
|---|---|---|---|
| Terminal | |||
| 2 | Ground | CVT fluid temperature: 20°C (68°F) | 5.5 – 7.0 Ω |
| CVT fluid temperature: 50°C (122°F) | 6.0 – 8.0 Ω | ||
| CVT fluid temperature: 80°C (176°F) | 6.5 – 8.5 Ω |
Is the inspection result normal?
YES>>Check intermittent incident. Refer to Intermittent Incident.
NO>>There is malfunction of secondary pressure solenoid valve. Replace control valve assembly. Refer to Removal and Installation.
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...
P0794 Intermediate Speed Sensor a
DTC Description
DTC DETECTION LOGIC DTC
CONSULT screen terms
(Trouble diagnosis content)
DTC detection condition
P0794
INTERMEDIATE SPEED SENSOR A
(Intermediate Shaft Speed Sensor "A" Circuit Intermittent)
Diagnosis condition
TCM power supply voltage: More than 11 V
Signal
—
Threshold
Primary pulley speed: more than 11820 rpm
Diagnosis delay time
Maintained 2 seconds
POSSIBLE CAUSE
Harness or connector (Primary speed sensor circuit is open or shorted)
Primary speed sensor
TCM
FAIL-SAFE
Start is slow
Acceleration is slow
Lock-up is not performed
Manual mode is not activated
Confirmation Procedure
DTC CONFIRMATION PROCEDURECAUTION:
Always drive vehicle at a safe speed...
Other information:
Nissan Murano (Z52) 2015-2024 Service Manual: Around View Monitor Control Unit
Values on the Diagnosis Tool NOTE: The following table includes information (items) inapplicable to this Nissan Murano vehicle. For information (items) applicable to this vehicle, refer to CONSULT display items. Monitor Item Condition Value/Status CAMERA OFF SIGNAL CAMERA switch ON...
Nissan Murano (Z52) 2015-2024 Owners Manual: Exterior and interior lights
* It is recommended that you visit a NISSAN dealer for replacement. Always check with the Parts Department at a NISSAN dealer for the latest parts information. Map light Headlight assembly Personal light Door mirror turn signal light Fog light (if so equipped) High-mounted stop light License plate light Backup (reversing) light assembly Rear combination light Cargo light Daytime running light Replacement procedures All other lights are either type A, B, C or D...
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Autolight system
The autolight system allows the headlights to turn on and off automatically. The autolight system can:
Turn on the headlights, front parking, tail, license plate and instrument panel lights automatically when it is dark. Turn off all the lights (except daylight running lights) when it is light. Keep all the lights on for a period of time after you place the ignition switch in the OFF position and all doors are closed.