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 V6-3.7LFACTORY OEM SERVICE PROCEDURE
Accelerator Pedal Position Sensor: Testing and Inspection
ACCELERATOR PEDAL POSITION (APP) SENSOR INSPECTION [MZI 3.7 V6]
NOTE:
- The APP sensor cannot be removed as a single unit. When replacing the APP sensor, replace it together with the accelerator pedal as a single unit.
1. Connect the M-MDS to the DLC-2.
2. Switch the ignition to ON.
3. Verify that the APP sensor output value (PID: APP1, APP2) change smoothly while throttle valve is gradually depressed. On-Board Diagnostic Test
- If verified, go to the next step.
- If not as verified, replace the accelerator pedal. Service and Repair
4. Verify that the APP sensor output value (PID: APP1, APP2) is as indicated in the table below according to the condition of the accelerator pedal. On-Board Diagnostic Test
- If not as verified, replace the accelerator pedal. Service and Repair
APP sensor specification
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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