Camshaft Position Sensor - Protege & Protege5
WARNING: This page is about a different car, the 2003 Mazda Protege5, 2003 Mazda Protege, 2003 Mazda MX-5 Miata, 2003 Mazda MPV, and 2003 Mazda 6. However, it is still accessible from the selected car via links, so may be relevant.
- Disconnect Camshaft Position (CMP) sensor 2-pin harness connector. CMP sensor is located near front of valve cover. Using DVOM, measure resistance between CMP sensor connector terminals. If resistance reading is 950-1250 ohms, go to next step. If resistance reading is not as specified, replace CMP sensor. See CAMSHAFT POSITION SENSOR under ENGINE SENSORS & SWITCHES in REMOVAL, OVERHAUL & INSTALLATION article.
- Open Circuit Inspection
Disconnect PCM 104-pin harness connector and install 104-Pin Breakout Box (49-UN01-130) to PCM harness connector only. See Figure. Check for open or short circuit between following terminals:- CMP sensor harness connector terminal "A" (Blue wire) and breakout box terminal No. 85. See CMP/PCM TERMINAL IDENTIFICATION (PROTEGE & PROTEGE5) table.
- CMP sensor harness connector terminal "B" (Green wire) and breakout box terminal No. 86.
Repair suspect wire or replace wire harness as necessary. If short or open circuit is not found, replace CMP sensor.
CMP/PCM TERMINAL IDENTIFICATION (PROTEGE & PROTEGE5)
| Test Connection | PCM Terminal No. | |
|---|---|---|
| Protege & Protege5 | ||
| Positive Lead | 85 | |
| Negative Lead | 86 | |