Nissan Murano: System / Throttle Control
SYSTEM DIAGRAM
*: ECM determines the start signal status by the signals of engine speed and battery voltage.
SYSTEM DESCRIPTION
ECM calculates the value of signal transmitted from the accelerator pedal and activates the throttle valve by transmitting a control signal to the electric throttle control actuator. This allows the optimum throttle angle and improves drivability and fuel consumption. In addition, ECM learns the fully closed position every time when the ignition switch is turned OFF to improve the accuracy in throttle valve position.
When a malfunction occurs in the throttle control system, the throttle valve is closed by the return spring and maintains the minimum engine speed by holding a slightly opened condition which is close to the fully opened condition. This allows the securing of brake system, power steering system, and electric system and the ensuring of the safety.
Evap Orative Emission System
System Description
SYSTEM DIAGRAMSYSTEM DESCRIPTIONThe evaporative emission system is used to reduce hydrocarbons emitted into the atmosphere from the fuel system...
Intake Valve Timing Control
System Description
SYSTEM DIAGRAMSystem DescriptionINTAKE VALVE TIMING CONTROLSystem DescriptionThis mechanism hydraulically controls cam phases continuously with the fixed operating angle of the intake valve...
Other information:
Nissan Murano (Z52) 2015-2024 Service Manual: P0078 Evt Control Solenoid Valve
DTC Description DTC DETECTION LOGICAn improper voltage is sent to the ECM through exhaust valve timing control solenoid valve. DTC CONSULT screen terms (Trouble diagnosis content) DTC detection condition P0078 EX V/T ACT/CIRC-B1 [Exhaust valve timing control solenoid valve (bank 1) circuit] Diagnosis condition Start engine and let it idle Signal (terminal) Voltage signal transmitted from exhaust valve timing control solenoid valve to ECM Threshold An improper voltage is sent to the ECM through exhaust valve timing control solenoid valve Diagnosis delay time — P0084 EX V/T ACT/CIRC-B2 [Exhaust valve timing control solenoid valve (bank 2) circuit] Diagnosis condition Start engine and let it idle Signal (terminal) Voltage signal transmitted from exhaust valve timing control solenoid valve to ECM Threshold An improper voltage is sent to the ECM through exhaust valve timing control solenoid valve Diagnosis delay time — POSSIBLE CAUSEP0078 Harness or connectors (Exhaust valve timing control solenoid valve circuit is open or shorted...
Nissan Murano (Z52) 2015-2024 Service Manual: Diagnosis System (tcm). Diagnosis Description
1 Trip Detection Diagnosis and 2 Trip Detection Diagnosis NOTE: “Start the engine and turn OFF the ignition switch after warm-up.” This is defined as 1 trip. 1 TRIP DETECTION DIAGNOSISWhen initial malfunction is detected, TCM memorizes DTC. In these diagnoses, some illuminate MIL and some do not...
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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.