Open circuit

If there is no continuity, the circuit is open. Repair or replace the harness.
- Reference voltage circuit (TP sensor connector terminal A and PCM connector terminal 4L).
- TP circuit (TP sensor connector terminal C and PCM connector terminal 4Y).
- GND circuit (TP sensor connector terminal B and PCM connector terminal 4O).
Fig 1: Identifying Throttle Position Sensor Harness Side Connector
Courtesy of MAZDA MOTORS CORP.