Nissan Juke Service and Repair Manual : Structure and operation
Positive Crankcase Ventilation

This system returns blow-by gas to the intake manifold.
The positive crankcase ventilation (PCV) valve is provided to conduct crankcase blow-by gas to the intake manifold.
During partial throttle operation of the engine, the intake manifold sucks the blow-by gas through the PCV valve.
Normally, the capacity of the valve is sufficient to handle any blow-by and a small amount of ventilating air.
The ventilating air is then drawn from the air inlet tubes into the crankcase. In this process the air passes through the hose connecting air inlet tubes to rocker cover.
Under full-throttle condition, the manifold vacuum is insufficient to draw the blow-by flow through the valve.
The flow goes through the hose connection in the reverse direction.
On vehicles with an excessively high blow-by, the valve does not meet the requirement. This is because some of the flow will go through the hose connection to the air inlet tubes under all conditions.

Component parts
Engine control system : Component Parts Location
1. IPDM E/R
Refer to PCS-5, "Component Parts
Location".
2. Battery current sensor
(with battery temperature sensor)
3. Mass air flow ...
System
Engine control system : System Diagram
Engine control system : System Description
ECM performs various controls such as fuel injection control and ignition
timing control.
MULTIPORT FUEL INJE ...
Other materials:
Antenna base
Exploded View
1. Antenna rod
2. Antenna base
: N·m (kg-m, in-lb)
Removal and Installation
REMOVAL
1. Remove headlining. Refer to INT-26, "Exploded View".
2. Disconnect antenna feeder connector.
3. Remove nut to remove antenna base.
INSTALLATION
Install in the reverse order o ...
P0506 ISC system
Description
The ECM controls the engine idle speed to a specified level through the fine
adjustment of the air, which is let
into the intake manifold, by operating the electric throttle control actuator.
The operating of the throttle valve is
varied to allow for optimum control of the engine ...
Basic inspection
DIAGNOSIS AND REPAIR WORK FLOW
Work Flow
OVERALL SEQUENCE
DETAILED FLOW
1.GET INFORMATION FOR SYMPTOM
1. Get detailed information from the customer about the symptom (the
condition and the environment when
the incident/malfunction occurred).
2. Check operation condition of the function th ...
