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.
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HOMESERVICE MANUALSMAZDA1997MILLENIA V6-2.5L DOHCREPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTCOMPUTERS AND CONTROL SYSTEMSTHROTTLE POSITION SENSORADJUSTMENTS
1997 Mazda Millenia V6-2.5L DOHC
Throttle Position Sensor: Adjustments
1997 Mazda Millenia V6-2.5L DOHCSECTION Adjustments
Using The Engine Signal Monitor
1. Remove the PCM.
2. Connect the Special Service Tools to the PCM.
3. Verify that the throttle valve is at the closed throttle position.
4. Loosen the attaching screws.
5. Turn the ignition switch to ON.
6. Adjust the throttle position sensor so that the PCM terminal 3B voltage is as specified, by using a voltmeter.
Specification
Closed throttle position: 0.1-1.1 V
Wide open throttle: 2.8-4.5 V
Verify that the voltage increase is directly proportioned to the throttle valve opening angle.
7. Tighten the attaching screws.
Tightening torque: 1.6-2.3 Nm (14-20 in.lbs.)
8. If not adjusted, inspect the throttle position sensor harness.
9. If harness is OK, replace the throttle position sensor.
Using Special Service Tools (NGS)
1. Connect the Special Service Tools to the data link connector 2.
2. Verify that the throttle valve is at the closed throttle position.
3. Loosen the attaching screws.
4. Turn the ignition switch to ON.
5. Select the PID/DATA MONITOR AND RECORD function of the NGS.
6. Select "TP V" on the NGS display. NOS measures and shows the voltage.
Specification
Closed throttle position: 0.1-1.1 V
Wide open throttle: 2.8-4.5 V
Verify that the voltage increase is directly pro-portioned to the throttle valve opening angle.
7. Tighten the attaching screws.
Tightening torque: 1.6-2.3 Nm (14-20 in.lbs.)
8. If not adjusted, replace the Throttle Position Sensor.
1. Remove the PCM.
2. Connect the Special Service Tools to the PCM.
3. Verify that the throttle valve is at the closed throttle position.
4. Loosen the attaching screws.
5. Turn the ignition switch to ON.
6. Adjust the throttle position sensor so that the PCM terminal 3B voltage is as specified, by using a voltmeter.
Specification
Closed throttle position: 0.1-1.1 V
Wide open throttle: 2.8-4.5 V
Verify that the voltage increase is directly proportioned to the throttle valve opening angle.
7. Tighten the attaching screws.
Tightening torque: 1.6-2.3 Nm (14-20 in.lbs.)
8. If not adjusted, inspect the throttle position sensor harness.
9. If harness is OK, replace the throttle position sensor.
Using Special Service Tools (NGS)
1. Connect the Special Service Tools to the data link connector 2.
2. Verify that the throttle valve is at the closed throttle position.
3. Loosen the attaching screws.
4. Turn the ignition switch to ON.
5. Select the PID/DATA MONITOR AND RECORD function of the NGS.
6. Select "TP V" on the NGS display. NOS measures and shows the voltage.
Specification
Closed throttle position: 0.1-1.1 V
Wide open throttle: 2.8-4.5 V
Verify that the voltage increase is directly pro-portioned to the throttle valve opening angle.
7. Tighten the attaching screws.
Tightening torque: 1.6-2.3 Nm (14-20 in.lbs.)
8. If not adjusted, replace the Throttle Position Sensor.
RENDER: 1.0x
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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.