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 6 L4-2.5LFACTORY OEM SERVICE PROCEDURE
Transmission Position Sensor/Switch: Testing and Inspection
TRANSAXLE RANGE (TR) SWITCH INSPECTION [FS5A-EL]
CAUTION:
- Water or foreign objects entering the connector can cause a poor connection or corrosion. Be sure not to drop water or foreign objects on the connector when disconnecting it.
Operation Inspection
1. Verify that the starter operates only when the ignition is switched to START with the selector lever in P or N position.
2. Verify that the back-up lights illuminate when selected to R position with the ignition at ON.
3. Verify that the positions of the selector lever and the selector indicator light are aligned.
- If there is any malfunction, adjust the TR switch. Adjustments
On-Vehicle Inspection
1. Engage the parking brake and use wheel chocks at the front and rear of the wheels.
2. Disconnect the TR switch connector.
a. Disconnect the negative battery cable.
b. Remove the air cleaner component. Service and Repair
c. Disconnect the TR switch connector.
3. Inspect continuity as indicated in the table.
- If there is any malfunction, adjust the TR switch. Adjustments
- If a malfunction occurs after performing adjustments, replace the TR switch. Service and Repair
TR switch specification
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.