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 MANUALSMAZDA20133 MAZDASPEED, 2.3L ENG VIN 3REPAIR AND DIAGNOSIS (SINGLE PAGE)ACCESSORIES & EQUIPMENTANTI-THEFT SYSTEMSON-BOARD DIAGNOSTIC [IMMOBILIZER SYSTEM (ADVANCED KEYLESS ENTRY AND PUSH BUTTON START SYSTEM)]DTC INSPECTION [IMMOBILIZER SYSTEM (ADVANCED KEYLESS ENTRY AND PUSH BUTTON START SYSTEM)]VERIFYING DTCS USING SECURITY LIGHT
2013 Mazda 3 Mazdaspeed, 2.3L Eng VIN 3
Verifying DTCs using security light
2013 Mazda 3 Mazdaspeed, 2.3L Eng VIN 3SECTION Verifying DTCs using security light
NOTE:
- If multiple DTCs are detected, only those having the lowest numbers of those detected will be indicated by the security light.
- A DTC is displayed ten times by switching the ignition ON once.
- Switch the ignition ON.
- Wait for approx. 1 min until the security light displays a DTC.NOTE:
- When the ignition is switched ON with the following DTC detected, a DTC is displayed after the security light is flashed or illuminated for approx. 1 min.
- If a DTC in the tens is detected, the security light flashes for approx. 1 min.
- If a DTC in the twenties is detected, the security light illuminates for approx. 1 min.
- If the security light turns off after approx. 3 s, verify the DTC using the M-MDS because the immobilizer system is normal or there is a DTC which cannot be verified by the security light.
- When the ignition is switched ON with the following DTC detected, a DTC is displayed after the security light is flashed or illuminated for approx. 1 min.
- Read DTCs by the number of times the security light flashes as shown in the figure.
- Repair the malfunctioning part according to the applicable DTC troubleshooting based on the DTC which was verified by the number of times the security light flashed. (See DTC TABLE [IMMOBILIZER SYSTEM (ADVANCED KEYLESS ENTRY AND PUSH BUTTON START SYSTEM)] .)
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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.