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.
2007 Mazda 6 V6-3.0LFACTORY OEM SERVICE PROCEDURE
Accelerator Pedal Position Sensor: Testing and Inspection
ACCELERATOR PEDAL POSITION (APP) SENSOR INSPECTION[AJ]
NOTE: Perform the following inspection only when directed.
1. Connect the M-MDS to the DLC-2.
2. Turn the ignition switch to ON position.
3. Select APP1 or APP2 PID (percentage) on the M-MDS.
4. Verify that the APP1 or APP2 PID (percentage) changes smoothly while accelerator pedal is gradually depressed.
- If as verified, go to next step.
- If not as verified, perform the "Circuit Open Short Inspection".
5. Verify that the APP1 or APP2 PID (percentage) is as indicated in the table below according to the condition of the accelerator pedal.
- If not verified, perform the "Circuit Open/Short Inspection"
- If there is no open or short circuit, replace the APP sensor.
Circuit Open/Short Inspection
1. Disconnect the PCM connector.
2. Inspect the following harness for open or short circuit. (Continuity check)
Open circuit
- APP sensor terminal A and PCM terminal 1AV
- APP sensor terminal B and PCM terminal 1T
- APP sensor terminal C and PCM terminal 1AP
- APP sensor terminal D and PCM terminal 1AR
- APP sensor terminal E and PCM terminal 1x
- APP sensor terminal F and PCM terminal 1AO
Short circuit
- APP sensor terminal A and power supply
- APP sensor terminal A and body ground
- APP sensor terminal B and power supply
- APP sensor terminal C and power supply
- APP sensor terminal C and body ground
- APP sensor terminal D and power supply
- APP sensor terminal D and body ground
- APP sensor terminal E and power supply
- APP sensor terminal F and power supply
- APP sensor terminal F and body ground
NOTE: Perform the following inspection only when directed.
1. Connect the M-MDS to the DLC-2.
2. Turn the ignition switch to ON position.
3. Select APP1 or APP2 PID (percentage) on the M-MDS.
4. Verify that the APP1 or APP2 PID (percentage) changes smoothly while accelerator pedal is gradually depressed.
- If as verified, go to next step.
- If not as verified, perform the "Circuit Open Short Inspection".
Specification:
5. Verify that the APP1 or APP2 PID (percentage) is as indicated in the table below according to the condition of the accelerator pedal.
- If not verified, perform the "Circuit Open/Short Inspection"
- If there is no open or short circuit, replace the APP sensor.
Circuit Open/Short Inspection
1. Disconnect the PCM connector.
2. Inspect the following harness for open or short circuit. (Continuity check)
Open circuit
- APP sensor terminal A and PCM terminal 1AV
- APP sensor terminal B and PCM terminal 1T
- APP sensor terminal C and PCM terminal 1AP
- APP sensor terminal D and PCM terminal 1AR
- APP sensor terminal E and PCM terminal 1x
- APP sensor terminal F and PCM terminal 1AO
Short circuit
- APP sensor terminal A and power supply
- APP sensor terminal A and body ground
- APP sensor terminal B and power supply
- APP sensor terminal C and power supply
- APP sensor terminal C and body ground
- APP sensor terminal D and power supply
- APP sensor terminal D and body ground
- APP sensor terminal E and power supply
- APP sensor terminal F and power supply
- APP sensor terminal F and body ground
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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