Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSMAZDA20113 MAZDASPEED, 2.3 3REPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 7 (ENGINE CONTROLS - SYSTEM/COMPONENT TESTS - 2.3L)
2011 Mazda 3 Mazdaspeed, 2.3 3
Section 7 (Engine Controls - System/Component Tests - 2.3L)
2011 Mazda 3 Mazdaspeed, 2.3 3SECTION Section 7 (Engine Controls - System/Component Tests - 2.3L)
WARNING: This page is about a different car, the 1997 Mazda Millenia. However, it is still accessible from the selected car via links, so may be relevant.
- Introduction
- Air Induction Systems
- Air Charging Pressure Control
- Lysolm Compressor
- Charge Air Cooler (Intercooler)
- Charge Air Cooler By-Pass (System Check)
- Charge Air Cooler By-Pass Actuator
- Air By-Pass Valve (ABV) Actuator
- Charge Air Cooler By-Pass Solenoid Valve
- Air By-Pass Valve (ABV) Vacuum Solenoid Valve
- Air By-Pass Valve (ABV) Vent Solenoid Valve
- Check Valve
- Solenoid Valve
- Air Charging Pressure Control
- Computerized Engine Controls
- Engine Sensors & Switches
- BRAKELIGHT Switch
- Camshaft Position (CMP) Sensor
- Closed Throttle Position Switch
- Crankshaft Position (CKP) Sensor
- EGR Boost Sensor
- Engine Coolant Temperature (ECT) Sensor
- Fuel Tank Pressure Sensor
- Heated Oxygen Sensor (Ho2S)
- Intake Air Temperature (IAT) Sensor
- Knock Sensor
- Manifold Absolute Pressure (Map) Sensor
- Mass Airflow (MAF) Sensor
- Power Steering Pressure (PSP) Switch
- Speedometer Sensor
- Throttle Position Sensor
- Transmission Range Switch (A/T)
- Vehicle Speed Sensor (VSS)
- Relays & Solenoids
- Fuel Pump Relay
- Fuel Pump Resistor & Relay (Speed)
- Main Relay
- Solenoids
- Air By-Pass Valve (ABV) Vacuum Solenoid Valve
- Air By-Pass Valve (ABV) Vent Solenoid Valve
- By-Pass Air Solenoid Valve
- Charge Air Cooler By-Pass Solenoid Valve
- EGR Vacuum Solenoid Valve
- EGR Vent Solenoid Valve
- Manifold Absolute Pressure (MAP) Sensor Solenoid Valve
- Pressure Regulator Control (PRC) Solenoid Valve
- Purge Control Solenoid
- Fuel System
- Idle Control System
- Ignition System
- Emission Systems & Sub-Systems
- Vacuum Pump
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.