Engine - Intake-Air System (L3 with TC): Other Mazda 3 BL

Open circuit

1. If there is no continuity, there is an open circuit. Repair or replace the wiring harness. Throttle actuator terminal F and PCM terminal 2A Throttle actuator terminal E and PCM terminal 2B

Short circuit

1. If there is continuity, there is a short circuit. Repair or replace the wiring harness. Throttle actuator terminal F and power supply Throttle actuator terminal F and ground Throttle actuator terminal E and power supply Throttle actuator terminal E and ground

1. If there is no continuity, there is an open circuit. Repair or replace the wiring harness. Variable swirl solenoid valve terminal B and PCM terminal 2AS Variable swirl solenoid valve terminal A and main relay terminal A

1. If there is continuity, there is a short circuit. Repair or replace the wiring harness. Variable swirl solenoid valve terminal A and body ground Variable swirl solenoid valve terminal B and power supply Variable swirl solenoid valve terminal B and body ground

Scheme 331

1. Remove the wastegate control solenoid valve. (See «INTAKE AIR SYSTEM REMOVAL/INSTALLATION [L3 WITH TC]»(ref-345225-S13656146802009102000000) ).
2. Inspect the airflow between the ports under the following conditions. If not as specified, replace the wastegate control solenoid valve. If as specified, carry out the "Circuit Open/Short Inspection".

Scheme 332

1. Disconnect the PCM connector. (See «PCM REMOVAL/INSTALLATION [L3 WITH TC]»(ref-345229-S41780515662009102000000) .)
2. Inspect the following wiring harness for an open or short circuit (continuity check).

Scheme 333

1. If there is no continuity, there is an open circuit. Repair or replace the wiring harness. Wastegate control solenoid valve terminal B and PCM terminal 2AA Wastegate control solenoid valve terminal A and main relay terminal A

1. If there is continuity, there is a short circuit. Repair or replace the wiring harness. Wastegate control solenoid valve terminal A and body ground Wastegate control solenoid valve terminal B and power supply Wastegate control solenoid valve terminal B and body ground

Scheme 334

Scheme 335

1. Remove the air hose and air duct. (See «INTAKE AIR SYSTEM REMOVAL/INSTALLATION [L3 WITH TC]»(ref-345225-S13656146802009102000000) )
2. Disconnect the hose from the wastegate actuator.
3. Plug the wastegate actuator as shown in the figure.
4. Connect the vacuum pump to the port
5. Raise the pressure slowly and take a measurement of the pressure when the rod stroke is 1.5 mm {0.06 in}. If the rod does not move, replace the turbocharger. Specification (rod stroke: 1.5 mm {0.06 in}) 78.0-83.4 kPa {586-625 mmHg, 23.1-24.6 inHg}

Scheme 336

1. Remove the turbocharger. (See «INTAKE AIR SYSTEM REMOVAL/INSTALLATION [L3 WITH TC]»(ref-345225-S13656146802009102000000) ).
2. Visually inspect the compressor wheel from view A for the cracks, damage, or bending on all the compressor wheel blades. If there are any cracks or damage, replace the turbocharger. NOTE: If there is contact between the compressor wheel and compressor housing, there may be cracks, damage, or bending on the blade end area. If there are cracks, damage, or bending on the compressor wheel, verify the following after replacing the turbocharger. Intake air/exhaust system related components Oil pipe damage

Scheme 337

1. Remove the turbocharger. (See «INTAKE AIR SYSTEM REMOVAL/INSTALLATION [L3 WITH TC]»(ref-345225-S13656146802009102000000) ).
2. Visually inspect the turbine wheel from view B for the cracks, damage, or bending on all the turbine wheel blades. If there are cracks, damage, or bending on the turbine wheel, replace the turbocharger. NOTE: If there is contact between the turbine wheel and turbine housing, there may be cracks, damage, or bending on the blade end area. If there are cracks, damage, or bending on the turbine wheel, verify the following after replacing the turbocharger. Intake air/exhaust system related components Oil pipe damage

Scheme 338

1. Remove the battery cover. (See «BATTERY REMOVAL/INSTALLATION [L3 WITH TC]»(ref-345228-S02486648752009102000000) .)
2. Disconnect the negative battery cable.
3. Remove in the order indicated in the table.
4. Install in the reverse order of removal.