Mazda 6 Service Manual: Variable intake-air system (vis) control solenoid valve inspection (l3)

Mazda 6 Service Manual / Fuel and emission control systems / Intake-air system / Variable intake-air system (vis) control solenoid valve inspection (l3)

1. Remove the VIS control solenoid valve. (See INTAKE-AIR SYSTEM REMOVAL/INSTALLATION.)

2. Inspect airflow between the ports under the following conditions.

If not as specified, replace the VIS control solenoid valve.
If as specified, carry out the Circuit Open/Short Inspection.

Circuit Open/Short Inspection

1. Disconnect the PCM connector. (See PCM REMOVAL/INSTALLATION.)

2. Inspect the following wiring harness for open or short (continuity check).

Open circuit

If there is no continuity, the circuit is open. Repair or replace the harness.

- VIS control solenoid valve terminal A (harness-side) and PCM terminal 4R

- VIS control solenoid valve terminal B (harness-side) and main relay terminal C (harness-side)

Short circuit

If there is continuity, the circuit is shorted. Repair or replace the harness.

- VIS control solenoid valve terminal A (harness-side) and body GND

- VIS control solenoid valve terminal B (harness-side) and power supply

Variable intake-air system (vis) shutter valve actuator inspection (l3)

1. Remove the air hose. (See INTAKE-AIR SYSTEM REMOVAL/INSTALLATION.) 2. Disconnect the vacuum hose from the VIS shutter valve actuator. 3. Connect a vacuum pump to the VIS shutter valve actuator. ...

Variable tumble control system (vtcs) shutter valve actuator inspection

1. Remove the air hose. (See INTAKE-AIR SYSTEM REMOVAL/INSTALLATION.) 2. Disconnect the vacuum hose from the VTCS shutter valve actuator. 3. Connect a vacuum pump to the VTCS shutter valve actuato ...

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