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 MANUALSMAZDA20066 I, 4D SEDAN, AUTOMATICREPAIR AND DIAGNOSIS (SINGLE PAGE)ENGINE PERFORMANCEENGINE CONTROL SYSTEMSENGINE CONTROL SYSTEM (L3)PCM REPLACEMENT

2006 Mazda 6 i, 4D Sedan, Automatic

Pcm Replacement

2006 Mazda 6 i, 4D Sedan, AutomaticSECTION Pcm Replacement

Connect the WDS or equivalent to the DLC-2.
Set up the WDS or equivalent (including the vehicle recognition).
Select "Module Programming".
Select "Programmable Module Installation".
Select "PCM" and perform procedures according to directions on the WDS or equivalent screen.
NOTE:
- If the PCM is replaced with a new one, the PCM stores DTC P0602 and illuminates the MIL even though no malfunction is detected. When the configuration is completed, DTC P0602 is cleared.
  
  Fig 1: Locating DLC-2 Connector
  Courtesy of MAZDA MOTORS CORP.
Retrieve DTC's by the WDS or equivalent, then verify that there in no DTC present.
- If DTC is present, perform applicable DTC inspection. (See DTC TABLE ).

RENDER: 1.0x

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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.