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 MANUALSMAZDA20096 V6-3.7LREPAIR AND DIAGNOSISTECHNICAL SERVICE BULLETINSALL TECHNICAL SERVICE BULLETINSENGINE CONTROLS - PCM REPROGRAMMING PRECAUTIONS
2009 Mazda 6 V6-3.7L
Engine Controls - PCM Reprogramming Precautions
2009 Mazda 6 V6-3.7LSECTION Engine Controls - PCM Reprogramming Precautions
Bulletin No: 01-019/09
Last Issued: 05/29/2009
Subject:
SERVICE CAUTIONS FOR PCM REPROGRAMMING
APPLICABLE MODEL(S)/VINS
2009 Mazda6 3.7L vehicles with produced before Oct. 17, 2008
DESCRIPTION
Due to a purge solenoid valve logic change, the PCM software has been modified and a diode (A) has been added to the harness.
When performing a PCM reprogramming on a vehicle built before Oct. 17, 2008 (without a diode), the (example only shown) screen may appear in the Mazda Modular Diagnostic System (M-MDS).
Install a short cord (diode) to the harness according to Service Bulletin 01-018/09 (Purge Valve Contact / Hard Rattle Noise) issued 05/29/09, then reprogram the PCM.
CAUTION:
Failure to install a short cord (diode) will cause a functional concern. It is the dealer's responsibility to follow the service bulletin and M-MDS instructions.
Disclaimer
Last Issued: 05/29/2009
Subject:
SERVICE CAUTIONS FOR PCM REPROGRAMMING
APPLICABLE MODEL(S)/VINS
2009 Mazda6 3.7L vehicles with produced before Oct. 17, 2008
DESCRIPTION
Due to a purge solenoid valve logic change, the PCM software has been modified and a diode (A) has been added to the harness.
When performing a PCM reprogramming on a vehicle built before Oct. 17, 2008 (without a diode), the (example only shown) screen may appear in the Mazda Modular Diagnostic System (M-MDS).
Install a short cord (diode) to the harness according to Service Bulletin 01-018/09 (Purge Valve Contact / Hard Rattle Noise) issued 05/29/09, then reprogram the PCM.
CAUTION:
Failure to install a short cord (diode) will cause a functional concern. It is the dealer's responsibility to follow the service bulletin and M-MDS instructions.
Disclaimer
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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.