Nissan Murano: System / Cooling Fan Control

Nissan Murano (Z52) 2015-2024 Service Manual / Engine / Engine Control System :: Vq35de / System Description / System / Cooling Fan Control

System Description

SYSTEM DIAGRAM

SYSTEM DESCRIPTION

ECM controls cooling fan speed corresponding to vehicle speed, engine coolant temperature, refrigerant pressure, air conditioner ON signal. Then control system has 4 -step control [HIGH/MIDDLE/LOW/OFF].

Cooling Fan Operation

Cooling Fan Relay Operation

The ECM controls cooling fan relays through CAN communication line.

Cooling fan speed	Cooling fan relay
Cooling fan speed	1	2	3
Stop (OFF)	OFF	OFF	OFF
Low (LOW)	ON	OFF	OFF
Middle (MID)	OFF	ON	OFF
High (HI)	OFF	ON	ON

Automatic Speed Control Device (ascd)

System Description SYSTEM DIAGRAMBASIC ASCD SYSTEMRefer to Owner's Manual for ASCD operating instructions.Automatic Speed Control Device (ASCD) allows a driver to keep vehicle at predetermined constant speed without depressing accelerator pedal...

Electronic Controlled Engine Mount

System Description SYSTEM DIAGRAMSYSTEM DESCRIPTIONThe ECM controls the engine mount operation corresponding to the engine speed. The control system has a 2-step control [Soft/Hard] Vehicle condition Engine mount control Engine speed: Below 950 rpm Soft Engine speed: Above 950 rpm Hard ELECTRONIC CONTROLLED ENGINE MOUNT LINE DRAWING Electronic controlled engine mount control solenoid valve Intake manifold collector : From next figure Front electronic controlled engine mount Rear electronic controlled engine mount : To previous figure NOTE: Do not use soapy water or any type of solvent while installing vacuum hose...

Other information:

Nissan Murano (Z52) 2015-2024 Service Manual: Intelligent Key

Component Function Check NOTE: The Signal Tech II Tool [- (J-50190)] can be used to perform the following functions: Refer to the Signal Tech II User Guide for additional information. Check Intelligent Key relative signal strength. Confirm Nissan Murano vehicle Intelligent Key antenna signal strength...

Nissan Murano (Z52) 2015-2024 Service Manual: U1300 Av Communication Circuit

DTC Description DTC DETECTION LOGIC DTC No. CONSULT screen terms (Trouble diagnosis content) DTC detection condition U1300–01 AV communication circuit (AV communication circuit) Diagnosis condition When ignition switch is ON. Signal (terminal) — Threshold — Diagnosis delay time — POSSIBLE CAUSE AV communication circuit Audio unit Combination meter FAIL-SAFEAV communication is inoperative Confirmation Procedure PERFORM DTC CONFIRMATION PROCEDURE CONSULT Ignition switch ON...