Variable Boost Control (Vbc) Check Valve Inspection; Variable Swirl Control (Vsc) Valve Actuator Inspection - Mazda Mazda6 Workshop Manual Supplement

Open circuit
• If there is no continuity, the circuit is open. Repair or replace the harness.
— VBC solenoid valve terminal A (harness-side) and PCM control relay terminal C
— VBC solenoid valve terminal B (harness-side) and PCM connector terminal 67
Short circuit
• If there is continuity, the circuit is shorted. Repair or replace the harness.
— VBC solenoid valve terminal A (harness-side) and GND
— VBC solenoid valve terminal B (harness-side) and power supply
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VARIABLE BOOST CONTROL (VBC) CHECK VALVE INSPECTION

1. Remove the VBC check valve. (See
2. Blow through port A and verify that the air flows from port B.
• If not as specified, replace the VBC check valve.
3. Blow through port B and verify that the air does
not flow from port A.
• If not as specified, replace the VBC check
valve.
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VARIABLE SWIRL CONTROL (VSC) VALVE ACTUATOR INSPECTION

1. Disconnect the vacuum hose from the VSC
solenoid valve.
2. Connect a vacuum pump to the vacuum hose.
3. Apply vacuum and verify that the rod moves as
specified.
• If not as specified, replace the intake
manifold.
Specification
Vacuum (kPa {mmHg, inHg})
Below –20 {–150, –5.9}
Above –69.4 {–521, –20.5}
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INTAKE-AIR SYSTEM
F2–35 VACUUM TUBE ROUTING
A
VACUUM
HOSE
Rod movement
Starts to move
Fully pulled
DIAGRAM.)
ROD
VSC SHUTTER
VALVE ACTUATOR
A6E401013710202
F2
B
A6E40102015
A6E401013110201
VSC
SOLENOID VALVE
A6E40102016
A6E40102017
F2–41