Engine Controls - Adjustments: Diagnosis Mazda MX-6 I

INSPECTION (2.5L)

1. Disconnect TP sensor connector. Connect ohmmeter between TP sensor connector terminals "E" and IDL. (Scheme 1) Insert feeler gauge of specified thickness between throttle lever and throttle stop screw. See TP SENSOR CONTINUITY (2.5L) table.
2. If continuity is not as specified, adjust TP sensor. See ADJUSTMENT procedure. If continuity is as specified, connect ohmmeter between TP sensor connector terminals Vt and "E". If resistance is less than 1000 ohms with throttle fully closed and about 5000 ohms with throttle wide open, TP sensor is adjusted. If resistance is not as specified, adjust TP sensor. See ADJUSTMENT procedure.

Note. If ohmmeter reading indicates a rough transition anywhere in range between lowest and highest readings, TP sensor potentiometer is faulty. Replace TP sensor.

1. Disconnect TP sensor connector. Connect ohmmeter between TP sensor connector terminals "E" and IDL. (Scheme 1) Loosen TP sensor attaching screws.
2. Insert a.006" (.15 mm) feeler gauge between throttle lever and throttle stop screw. Rotate TP sensor clockwise about 30 degrees, then rotate counterclockwise until ohmmeter indicates continuity.
3. Remove feeler gauge. Insert a.020" (.50 mm) feeler gauge between throttle lever and throttle stop screw. If ohmmeter indicates no continuity, go to next step. If ohmmeter indicates continuity, repeat adjustment procedure.
4. Tighten TP sensor attaching screws. Open throttle valve fully and verify resistance between terminals "E" and Vt is about 5000 ohms.

Note. TP sensor on MX-6 2.0L and 626 2.0L is not adjustable.

Scheme 1

TP SENSOR CONTINUITY