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.
2013 Mazda MX-5 Miata Grand Touring, Automatic TransFACTORY OEM SERVICE PROCEDURE
Check code 04
CODE INSPECTION CONDITION CHART
| Check code 04 | Door switch ON/OFF signal | ||
|---|---|---|---|
| STEP | INSPECTION CONDITION | DISPLAY | ACTION |
| 1 | Open the driver-side door. (The door switch is on). | on | Close the driver-side door, then go to the next step. |
| oFF | Verify that the voltage of instrument cluster terminal 2E is 1.0 V or less.
|
||
| 2 | Close all doors. (Door switches are off). | on | Verify that the voltage of instrument cluster terminal 2E is B+
.
|
| oFF | Input signal to the instrument cluster is normal. | ||
Factory Service Tools
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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.
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