Engine - Intake-Air System - 2.3L [L3]: Other Mazda 6 GG

Open Circuit

1. If there is no continuity, the circuit is open. Repair or replace the harness. VAD control solenoid valve terminal B (harness-side) and PCM terminal 4C. VAD control solenoid valve terminal A (harness-side) and main relay terminal C (harness-side).

Scheme 400

1. If there is continuity, the circuit is shorted. Repair or replace the harness. VAD control solenoid valve terminal B (harness-side) and body GND. VAD control solenoid valve terminal A (harness-side) and power supply.

Scheme 401

1. Remove the VAD check valve (one-way). (See «INTAKE-AIR SYSTEM REMOVAL/INSTALLATION [L3]»(ref-180761-S28907503002005072800000) .)
2. Blow through A and verify that air flows from B.
3. Blow through B and verify that air does not flow from A. If not as specified, replace the VAD check valve (one-way).

1. If there is no continuity, the circuit is open. Repair or replace the harness. Throttle actuator terminal F (harness-side) and PCM terminal 4Y. Throttle actuator terminal E (harness-side) and PCM terminal 4AB.

Scheme 402

1. If there is continuity, the circuit is shorted. Repair or replace the harness. Throttle actuator terminal F (harness-side) and power supply Throttle actuator terminal F (harness-side) and GND Throttle actuator terminal E (harness-side) and power supply Throttle actuator terminal E (harness-side) and GND

Scheme 403

Scheme 404

1. Remove the air hose. (See «INTAKE-AIR SYSTEM REMOVAL/INSTALLATION [L3]»(ref-180761-S28907503002005072800000) .)
2. Disconnect the vacuum hose from the VIS control solenoid valve.
3. Connect a vacuum pump to the VIS shutter valve actuator.
4. Apply vacuum and verify that the rod moves. If the rod dose not move, replace the intake manifold.

Scheme 405

Scheme 406

1. Remove the VIS control solenoid valve. (See «INTAKE-AIR SYSTEM REMOVAL/INSTALLATION [L3]»(ref-180761-S28907503002005072800000) .)
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". See «CIRCUIT OPEN/SHORT INSPECTION»(ref-180761-S02126301302005072800000) .

1. If there is no continuity, the circuit is open. Repair or replace the harness. VIS control solenoid valve terminal B (harness-side) and PCM terminal 4R. VIS control solenoid valve terminal A (harness-side) and main relay terminal C (harness-side).

Scheme 407

1. If there is continuity, the circuit is shorted. Repair or replace the harness. VIS control solenoid valve terminal B (harness-side) and body GND. VIS control solenoid valve terminal A (harness-side) and power supply.

Scheme 408

Scheme 409

1. Remove the air hose. (See «INTAKE-AIR SYSTEM REMOVAL/INSTALLATION [L3]»(ref-180761-S28907503002005072800000) .)
2. Disconnect the vacuum hose from the variable tumble control solenoid valve.
3. Connect a vacuum pump to the VTCS shutter valve actuator.
4. Apply vacuum and verify that the rod moves. If the rod dose not move, replace the intake manifold.

Scheme 410

Scheme 411

1. Remove the variable tumble control solenoid valve. (See «INTAKE-AIR SYSTEM REMOVAL/INSTALLATION [L3]»(ref-180761-S28907503002005072800000) .)
2. Inspect airflow between the ports under the following conditions. If not as specified, replace the variable tumble control solenoid valve. If as specified, carry out the "Circuit Open/Short Inspection". See «CIRCUIT OPEN/SHORT INSPECTION»(ref-180761-S29503457212005072800000) .

1. If there is no continuity, the circuit is open. Repair or replace the harness. Variable tumble control solenoid valve terminal B (harness-side) and PCM terminal 4T. Variable tumble control solenoid valve terminal A (harness-side) and main relay terminal C (harness-side).

Scheme 412

1. If there is continuity, the circuit is shorted. Repair or replace the harness.
2. Variable tumble control solenoid valve terminal B (harness-side) and body GND
3. Variable tumble control solenoid valve terminal A (harness-side) and power supply

Scheme 413

Scheme 414

1. Remove in the order indicated in the figures.
2. Install in the reverse order of removal.