Mazda 6 Service Manual: Throttle position (tp) sensor inspection

Note

• Perform the following inspection only when directed.

Resistance Inspection

1. Perform the following test only when directed.

• If as specified but TP PID value is out of specification, inspect resistance of TP sensor.
• If not as specified, inspect the following:

- Accelerator cable free play (See ACCELERATOR CABLE INSPECTION/ADJUSTMENT.)

2. Disconnect the TP sensor connector.

3. Verify that the resistance between TP sensor terminals A and B changes smoothly while opened and closed the throttle valve slowly.

• If not verified, replace TP sensor.

4. Measure the resistance between TP sensor terminals A and C using an ohmmeter.

• If not as specified, replace the TP sensor.
• If as specified, but TP PID value is out of specification, perform the Circuit Open/Short Inspection.

Specification
3.2-4.8 kilohms

Circuit Open/Short Inspection

1. Disconnect the PCM connector. (See PCM REMOVAL/INSTALLATION.)

2. Inspect the following wiring harnesses for open or short. (Continuity check)

Open circuit

• If there is no continuity, the circuit is open. Repair or replace the harness.

- TP sensor terminal A (harness-side) and PCM terminal 2H (harness-side)

- TP sensor terminal B (harness-side) and PCM terminal 2A (harness-side)

- TP sensor terminal C (harness-side) and PCM terminal 2K (harness-side)

Short circuit

• If there is continuity, the circuit is shorted. Repair or replace the harness.

- TP sensor terminal C (harness-side) and power supply

- TP sensor terminal C (harness-side) and body GND

- TP sensor terminal B (harness-side) and power supply

- TP sensor terminal B (harness-side) and body GND

- TP sensor terminal A (harness-side) and power supply