Mazda 3 Service Manual: Variable Tumble Shutter Valve Actuator Inspection [Mzr 2.0, Mzr 2.5]
Operation Inspection
1. Remove the air hose..
2. Disconnect the vacuum hose from the variable tumble shutter valve actuator.
3. Connect a vacuum pump to the variable tumble shutter valve actuator.
NOTE:
-
Covered with a hood, the rod of the variable tumble shutter valve actuator cannot be seen from above. Use a mirror from under it to check the operation of the variable tumble shutter valve.
4. Check if the rod operates correctly as stated in the table when a gradual negative pressure is applied to the variable tumble shutter valve actuator.
|
Vacuum kPa {mmHg, inHg} |
Rod movement |
|
Below –2.7 {–20, –0.8} |
No operate |
|
Above –33.4 {–251, –9.86} |
Fully pulled |
-
When it is not possible to confirm it, replace the intake manifold..
-
When the variable tumble shutter valve actuator cannot be activated even though the operation of the rod can be confirmed, check for any incorrect connections or breakage of the vacuum hose.
Variable Swirl Solenoid Valve Inspection [Mzr 2.3 Disi Turbo]
Airflow Inspection
1. Remove the battery cover..
2. Disconnect the negative battery cable..
3. Remove the variable swirl solenoid valve..
4. Inspect the airflow between the ports under the foll ...
Variable Tumble Solenoid Valve Inspection [Mzr 2.0, Mzr 2.5]
Airflow Inspection
1. Remove the battery cover..
2. Disconnect the negative battery cable..
3. Remove the variable tumble solenoid valve..
4. Inspect airflow between the ports under the followi ...
Other materials:
Engine Exhaust (Carbon monoxide)
WARNING
Do not drive your vehicle if you smell exhaust gas inside the
vehicle:
Engine exhaust gas is dangerous. This gas contains carbon monoxide (CO),
which is
colorless, odorless, and poisonous. When inhaled, it can cause loss of
consciousness and
death. If you smell ...
Tweeter Inspection
1. Disconnect the negative battery cable..
2. Remove the inner garnish..
3. Remove the tweeter..
4. Verify the resistance between tweeter terminals.
If not within the specification, replace the tweeter.
Resistance
Without Bose®: 3.4—4.6 ohms
With Bose®: 3 ...
Vacuum Hose Removal/Installation [Mzr 2.0, Mzr 2.5]
1. Remove the battery and battery tray..
2. Remove the vacuum hose from the vacuum hose clip.
3. Insert a thin flathead screwdriver at the point indicated by the arrow in
the figure, push the ring down and disconnect the vacuum hose from the intake manifold.
4. Move the vacuum hose ...