INTAKE MANIFOLD TUNING SYSTEM : System Description
SYSTEM DIAGRAM
SYSTEM DESCRIPTION
This system switches the length of intake air path according to the low-to-medium speed range or high speed range. Torque is increased in the low-to-medium speed range and the engine output is improved in the high speed range.
Engine speed: Low and medium speed range
Since the intake manifold tuning (IMT) valve is closed when the engine speed is less than 5,250 rpm, the length of the effective intake air path is from the mouth of intake manifold collector to the intake valve. This long path brings the inertia effect of intake air, contributing to the improvement in intake air efficiency and the generation of high torque.
Engine speed: High speed range
When engine speed is 5,250 rpm or more, ECM turns ON the intake manifold tuning valve motor to open the intake manifold tuning valve. The length of the effective intake air path at this time is from the intake manifold tuning valve to the intake valve. This short path brings the inertia effect of intake air in the high speed range, contributing to the torque improvement while the engine is running at high speeds. (The highest engine output is improved.)
Intake Manifold Tuning Valve Operating Condition
ECM opens the intake manifold tuning valve when all of the following conditions are satisfied.
Fuses
Two types of fuses are used. Type A is used in
the fuse boxes in the engine compartment. Type
B is used in the passenger compartment fuse
box.
Type A fuses are provided as spare fuses. They
are stored in the passenger compartment fuse
box.
Type A fuses can be installed in the engine com ...
Windshield glass
Exploded View
Windshield glass molding
Spacer
Rubber dam
Windshield glass
Windshield insulator
Front pillar finisher
Instrument panel
Cowl top cover
Roof panel
Cowl top
Body side outer
Headlining
Adhesive
12 +2.0 mm (0.5 +0.08 in)
7 +2.0 mm (0.3 +0.08 in)
...
Removal and installation
Hood
Hood assembly
Hood assembly : exploded view
Hood hinge (LH/RH)
Hood assembly
Hood bumper rubber
Hood seal
Hood insulator
Hood support rod
Hood support rod clamp
Clip
Hood assembly : removal and installation
CAUTION:
Use two people when removing or installin ...