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.
2006 Mazda 6 i, 4D Sedan, AutomaticFACTORY OEM SERVICE PROCEDURE
Engine Control System (L3)
- Control System Component Location Index
- Control System Diagram
- Control System Wiring Diagram
- Pcm Removal/Installation
- Pcm Inspection
- Using the WDS or Equivalent
- Without Using the SST
- Inspection Using An Oscilloscope (Reference)
- VSS signal
- Purge control signal
- OCV control signal
- CMP sensor signal
- CKP sensor signal
- HO2S (front) signal (California emission regulation applicable ATX model)
- Generator field coil control signal
- Generator output voltage signal
- IGT1, IGT2, IGT3, IGT4 control signals
- Fuel injection control
- HO2S (rear) heater control
- HO2S (front) heater control
- Pcm Replacement
- Clutch Pedal Position (CPP) Switch Inspection
- Neutral Switch Inspection
- Power Steering Pressure (PSP) Switch Inspection
- Variable Tumble Shutter Valve Switch Inspection
- Accelerator Pedal Position (App) Sensor Inspection
- Throttle Position (TP) Sensor Inspection
- Mass Air Flow (MAF) Sensor Inspection
- Intake Air Temperature (IAT) Sensor Inspection
- Engine Coolant Temperature (ECT) Sensor Removal/Installation
- Engine Coolant Temperature (ECT) Sensor Inspection
- Manifold Absolute Pressure (Map) Sensor Inspection
- Heated Oxygen Sensor (Ho2S) Inspection
- California Emission Regulation Applicable ATX Model
- Front HO2S current inspection
- Front HO2S heater resistance inspection
- Front HO2S circuit open/short inspection (sensor)
- Except for California Emission Regulation Applicable ATX Model
- Notes
- Front HO2S current inspection
- Front HO2S heater resistance inspection
- Front HO2S circuit open/short inspection (sensor)
- Open circuit
- Short circuit
- Rear HO2S voltage inspection
- Rear HO2S circuit open/short inspection (sensor)
- Rear HO2S heater resistance inspection
- Rear HO2S circuit open/short inspection (heater)
- Crankshaft Position (CKP) Sensor Removal/Installation
- Crankshaft Position (CKP) Sensor Inspection
- Camshaft Position (CMP) Sensor Removal/Installation
- Camshaft Position (CMP) Sensor Inspection
- Knock Sensor (KS) Removal/Installation
- Knock Sensor (KS) Inspection
- Barometric Pressure (BARO) Sensor Inspection (Vehicles Equipped With BARO Sensor Built Into Pcm)
Factory Service Tools
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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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.