Nissan Murano: Dtc/circuit Diagnosis / Refrigerant Pressure Sensor
CHECK REFRIGERANT PRESSURE SENSOR FUNCTION
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Start engine and warm it up to normal operating temperature.
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Turn A/C switch and blower fan switch ON.
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Check the voltage between ECM harness connector terminals under the following conditions.
ECM Voltage (V) Connector + – Terminal F78 20 25 1.0 - 4.0
Is the inspection result normal?
YES>>INSPECTION END
NO>>Proceed to Diagnosis Procedure.
CHECK REFRIGERANT PRESSURE SENSOR POWER SUPPLY
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Disconnect refrigerant pressure sensor harness connector.
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Turn ignition switch ON.
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Check the voltage between refrigerant pressure sensor harness connector and ground.
+ − Voltage (V) Refrigerant pressure sensor Connector Terminal E244 1 Ground Approx. 5
Is the inspection result normal?
YES>>GO TO 3.
NO>>GO TO 2.
CHECK REFRIGERANT PRESSURE SENSOR POWER SUPPLY CIRCUIT
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Turn ignition switch OFF.
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Disconnect ECM harness connector.
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Check the continuity between refrigerant pressure sensor harness connector and ECM harness connector.
| Refrigerant pressure sensor | ECM | Continuity | ||
|---|---|---|---|---|
| Connector | Terminal | Connector | Terminal | |
| E244 | 1 | F78 | 18 | Existed |
Is the inspection result normal?
YES>>Check sensor power supply 2 circuit. Refer to Diagnosis Procedure.
NO>>Repair or replace error-detected parts.
CHECK REFRIGERANT PRESSURE SENSOR GROUND CIRCUIT FOR OPEN AND SHORT
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Turn ignition switch OFF.
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Disconnect ECM harness connector.
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Check the continuity between refrigerant pressure sensor harness connector and ECM harness connector.
Refrigerant pressure sensor ECM Continuity Connector Terminal Connector Terminal E244 3 F78 25 Existed -
Also check harness for short to ground and short to power.
Is the inspection result normal?
YES>>GO TO 4.
NO>>Repair or replace error-detected parts.
CHECK REFRIGERANT PRESSURE SENSOR INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
-
Check the continuity between refrigerant pressure sensor harness connector and ECM harness connector.
Refrigerant pressure sensor ECM Continuity Connector Terminal Connector Terminal E244 2 F78 20 Existed -
Also check harness for short to ground and short to power.
Is the inspection result normal?
YES>>GO TO 5.
NO>>Repair or replace error-detected parts.
CHECK INTERMITTENT INCIDENT
Check intermittent incident. Refer to Intermittent Incident.
Is the inspection result normal?
YES>>Replace refrigerant pressure sensor. Refer to Removal and Installation.
NO>>Repair or replace error-detected parts.
On Board Refueling Vapor Recovery (orvr)
Component Function Check
CHECK ORVR FUNCTION
Check whether the following symptoms are present.
Fuel odor from EVAP canister is strong.
Cannot refuel/Fuel odor from the fuel filler opening is strong while refueling...
Sensor Power Supply2 Circuit
Diagnosis Procedure
ECM supplies a voltage of 5 V to some of the sensors systematically divided into 2 groups, respectively. Accordingly, when a short circuit develops in a sensor power source, a malfunction may occur simultaneously in the sensors belonging to the same group as the short-circuited sensor...
Other information:
Nissan Murano (Z52) 2015-2024 Owners Manual: Rear window and outside mirror (if so equipped) defroster switch
To defrost the rear window glass and outside mirrors (if so equipped), place the ignition switch in the ON position and push the rear window defroster switch on. The rear window defroster indicator light on the switch comes on. Push the switch again to turn the defroster off...
Nissan Murano (Z52) 2015-2024 Service Manual: Precaution. Precautions
Precaution for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT PRE-TENSIONER" The Supplemental Restraint System such as “AIR BAG” and “SEAT BELT PRE-TENSIONER”, used along with a front seat belt, helps to reduce the risk or severity of injury to the driver and front passenger for certain types of collisions...
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Vehicle security system
Your vehicle has two types of security systems:
Vehicle security system NISSAN Vehicle Immobilizer SystemThe vehicle security system provides visual and audible alarm signals if someone opens the doors, liftgate or the hood when the system is armed. It is not, however, a motion detection type system that activates when a vehicle is moved or when a vibration occurs.
