Intake Air Temperature Sensor: Miata

Remove Intake Air Temperature (IAT) sensor. Using ohmmeter, measure resistance between IAT sensor 2-pin connector terminals. See Figure . See IAT SENSOR RESISTANCE SPECIFICATIONS (EXCEPT MILLENIA 2.3L & MPV)  table. If not as specified, replace IAT sensor. If resistance readings are as specified, check for open in wiring between IAT sensor harness connector terminal "B" and PCM harness connector terminal 4N (Pink/Blue wire) or between IAT sensor harness connector terminal "A" and PCM harness connector terminal No. 40 (Black/Red wire). Check for short to ground between IAT sensor harness connector terminal "B" and PCM harness connector terminal 4N (Pink/Blue wire). Repair or replace wiring harness as necessary.