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
Circuit Open/Short Inspection
- Disconnect the PCM connector. (See PCM REMOVAL/INSTALLATION ).
- Inspect the following wiring harnesses for an open or short circuit. (Continuity Inspection)
Open circuit
- if there is no continuity, the circuit is open. Repair or replace the wiring harness.
- CKP sensor terminal A and PCM terminal 2AB
- CKP sensor terminal B and PCM terminal 2W
- CKP sensor terminal C and PCM terminal 2AQ
Short circuit
- If there is continuity, the circuit is shorted. Repair or replace the wiring harness.
- CKP sensor terminal A and power supply
- CKP sensor terminal B and power supply
- CKP sensor terminal B and body ground
- CKP sensor terminal C and body ground
Factory Service Tools
Use the Manual With the Right Hardware
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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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