Mazda CX-5 Service & Repair Manual: Check Valve
Except U.S.A. And CANADA
Purpose, function
-
The check valve maintain the pressure in the fuel tank at constant pressure.
Construction
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The check valve is installed to the side of the charcoal canister.
-
Mainly consists of valve, umbrella, and spring.
Operation
-
The valve moves in response to the difference in air pressure between the fuel tank side and the atmospheric side, thereby changing the path of airflow.
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When the pressure in the fuel tank becomes negative due to fuel consumption or other factors, the path opens, drawing atmospheric air into the fuel tank.
Check Valve Removal/Installation
Except U.S.A. And CANADA
1. Remove the floor under cover..
2. Remove in the order indicated in the table.
1
Evaporative hose
2
Check valve
...
Emission System
Purpose, Outline
A single-nano catalyst has been adopted for the under-floor, three-way catalyst
to improve emission gas purification efficiency.
Structural View
Engine compartment si ...
Other materials:
Knock Sensor (Ks)
Purpose/Function
Detects abnormal combustion in the cylinder as basic information for mainly
determining the ignition timing.
Detects abnormal combustion in the combustion chamber and inputs it to the
PCM as a knocking signal.
Construction
Installed on the cylinder ...
Front Body Control Module (Fbcm) Inspection
1. Remove the fuse box cover..
2. Remove the front body control module (FBCM) from the fuse box..
3. Verify that the voltages of each of the terminals are as indicated in the
Terminal Voltage Table (Reference).
If the voltage is not as indicated in the table, inspect the parts under
...
Electric Variable Valve Timing Motor/Driver Inspection
WARNING:
A hot engine can cause severe burns. Turn off the engine and wait until it
is cool before servicing.
CAUTION:
Do not disassemble the electric variable valve timing motor/driver because
it is a precision unit.
Do not apply excessive force when rotating the ...
