Protege & Protege5
WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2002 Mazda Protege5, 2002 Mazda Protege, 2002 Mazda Millenia, 2002 Mazda MX-5 Miata, and 2002 Mazda MPV. However, it is still accessible from the selected car via links, so may be relevant.
Remove IAT sensor. Using ohmmeter, measure resistance between IAT sensor terminals "A" and "B". See Fig 1 . See IAT SENSOR RESISTANCE (PROTEGE & PROTEGE5) table. If not as specified, replace IAT sensor. If resistance readings are as specified, check for open in Blue/White wire between IAT sensor harness connector terminal "A" and PCM harness connector terminal No. 39 or Orange wire between IAT sensor harness connector terminal "B" and PCM harness connector terminal No. 91. Check for short to ground in Blue/White wire between IAT sensor harness connector terminal "A" and PCM harness connector terminal No. 39. Repair or replace wiring harness as necessary.
IAT SENSOR RESISTANCE SPECIFICATIONS (PROTEGE & PROTEGE5)
| Ambient Temperature - °F (°C) | Ohms |
|---|---|
| 68 (20) | 2000-2900 |
| 176 (80) | 270-370 |