Disconnect TPS connector. Using an ohmmeter, check continuity with selected thickness gauge between throttle stop screw and stop lever. See TPS ADJUSTMENT (323 NON-TURBO) table.
To adjust, loosen TPS attaching screws. Connect ohmmeter between terminals IDL and TL. See Fig 1 . Insert a .020" (.5 mm) thickness gauge between adjustment screw and stop lever. Rotate TPS until ohmmeter shows continuity.
Insert a .028" (.7 mm) thickness gauge between adjustment screw and stop lever. Ohmmeter should show no continuity. If ohmmeter does not read correctly, repeat adjustment procedure to obtain correct readings.

TPS ADJUSTMENT (323 NON-TURBO)

Test Condiiton ⁽¹⁾

Continuity Between IDL-TL

Continuity Between PSW-TL

.02" (.5 mm)

Yes

.03" (.7 mm)

Wide Open Throttle

Yes

⁽¹⁾	Insert specified thickness gauge between throttle adjustment screw and stop lever for first 2 test conditions.

Fig 1: 323 Non-Turbo TPS Connector Terminal Identification

Courtesy of MAZDA MOTORS CORP.

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.

Safety Warning

Throttle Sensor (Non-Turbo)