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.
2012 Mazda 3 L4-2.5LFACTORY OEM SERVICE PROCEDURE
Starting System: Testing and Inspection
FORCED IGNITION ON [WITH ADVANCED KEYLESS ENTRY AND PUSH BUTTON START SYSTEM]
NOTE:
- In order to perform a forced ignition ON, the M-MDS (IDS) is necessary. If the servicing is being done outside of an Authorized Mazda dealership, contact an Authorized Mazda dealership for instructions.
- The forced ignition ON procedure forces a power supply to each part when no power is available even after the ignition switch has been operated. However, the engine cannot be started and the steering cannot be unlocked.
- When performing a forced ignition ON procedure, remove all advanced keys from the vehicle. If an advanced key is left in the vehicle, the forced ignition ON procedure cannot be done.
1. Verify that there are no advanced keys in the vehicle.
2. Get PCM part number from As-built site.
3. Connect the M-MDS (IDS) to the DLC-2.
4. Manual vehicle identification.
- Select "Manual Vehicle Entry".
5. Select the "All other" from Vehicle list.
6. Input the PCM part number on the following screen.
7. After the vehicle is identified, select the following items from the initialization screen of the IDS.
- Select "Body".
- Select "Special Ignition ON".
8. Perform the procedure according to the directions on the screen.
9. Delete session with keeping ignition ON.
10. Normal vehicle identification.
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:
- β’ You smell fuel, burning insulation, or see smoke.
- β’ Brakes feel soft, pull hard to one side, or make grinding noises.
- β’ The engine overheats, stalls repeatedly, or misfires under load.
- β’ You are missing required tools, torque specs, or safe lifting equipment.
- β’ You are not confident in the next step or safety outcome.
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