Nissan Murano: System / Engine Protection Control at Low Engine Oil Pressure

Nissan Murano (Z52) 2015-2024 Service Manual / Engine / Engine Control System :: Vq35de / System Description / System / Engine Protection Control at Low Engine Oil Pressure

System Description

SYSTEM DIAGRAM

SYSTEM DESCRIPTION

The engine protection control at low engine oil pressure warns the driver of a decrease in engine oil pressure by the oil pressure warning lamp before the engine becomes damaged.
When detecting a decrease in engine oil pressure at an engine speed less than 1,000 rpm, ECM transmits an oil pressure warning lamp signal to the combination meter. The combination meter turns ON the oil pressure warning lamp, according to the signal.
When detecting a decrease in engine oil pressure at an engine speed 1,000 rpm or more, ECM transmits an oil pressure warning lamp signal to the combination meter.

The combination meter turns ON the oil pressure warning lamp, according to the signals. When detecting a decrease in engine oil pressure, ECM cuts fuel if the engine speed exceeds the specified value.

Decrease in engine oil pressure	Engine speed	Combination meter	Fuel cut
Decrease in engine oil pressure	Engine speed	Oil pressure warning lamp	Fuel cut
Detection	Less than 1,000 rpm	ON*	NO
Detection	1,000 rpm or more	ON	YES

*: When detecting a normal engine oil pressure, ECM turns OFF the oil pressure warning lamp.

Exhaust Valve Timing Control

System Description SYSTEM DIAGRAMINPUT/OUTPUT SIGNAL CHART Sensor Input signal to ECM ECM function Actuator Crankshaft position sensor (POS) Engine speed and piston position Exhaust valve timing control Exhaust valve timing control solenoid valve Camshaft position sensor (PHASE) Engine oil temperature sensor Engine oil temperature Exhaust valve timing control position sensor Exhaust valve timing signal Combination meter CAN communication Nissan Murano Vehicle speed signal SYSTEM DESCRIPTIONThis mechanism hydraulically controls cam phases continuously with the fixed operating angle of the exhaust valve...

Fuel Filler Cap Warning System

System Description SYSTEM DIAGRAMSYSTEM DESCRIPTIONThe fuel filler cap warning system alerts the driver to the prevention of the fuel filler being left uncapped and malfunction occurrences after refueling, by turning ON the fuel filler cap warning display on the combination meter...

Other information:

Nissan Murano (Z52) 2015-2024 Service Manual: Oil

Description MAINTENANCE OF OIL LEVELThe compressor oil is circulating in the system together with the refrigerant. It is necessary to fill compressor with oil when replacing A/C system parts or when a large amount of refrigerant leaks are detected. It is important to always maintain oil level within the specified level or the following conditions may occur: Insufficient oil amount: Stuck compressor Excessive oil amount: Insufficient cooling (caused by insufficient heat exchange) Oil Type : "Oil"...

Nissan Murano (Z52) 2015-2024 Service Manual: C1143 St Ang Sen Circuit

DTC Description DTC DETECTION LOGIC DTC No. CONSULT screen terms (Trouble diagnosis content) DTC detection condition C1143 ST ANG SEN CIRCUIT (Steering angle sensor circuit) Diagnosis condition When ignition switch ON. Signal (terminal) Steering angle sensor signal Threshold Steering angle sensor signal failure Diagnosis delay time 2 seconds or more POSSIBLE CAUSE Harness or connectors Steering angle sensor Power steering control module FAIL-SAFECertain steering assist force DTC Confirmation Procedure PRECONDITIONING If “DTC CONFIRMATION PROCEDURE” has been previously conducted, always place the ignition switch in the OFF position and wait at least 10 seconds before conducting the next test...