Camshaft Position Sensor - MPV
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 connector. See Fig 1. Measure resistance between CMP sensor connector terminals. Resistance reading should be 308-376 ohms. If resistance reading is okay but PID value or voltage is out of specification, check for open or short circuit. Go to next step. If resistance 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. Connect 104-Pin Breakout Box (49-UN01-130) to PCM harness connector only. See Fig 2. Check continuity between following terminals:- CMP sensor harness connector terminal "A" (Brown/Light Green wire) and breakout box terminal No. 85. See Fig 3.
- CMP sensor harness connector terminal "B" (Blue/Orange wire) and breakout box terminal No. 86.
If continuity is present, go to next step. If continuity is not present, repair open circuit in suspect wire or replace wire harness. See appropriate WIRING DIAGRAM under ENGINE PERFORMANCE in SYSTEM WIRING DIAGRAMS.
- Short Circuit Inspection
Check for continuity between following:- Between CMP sensor harness connector terminal "A" (Brown/Light Green wire) and power.
- Between CMP sensor harness connector terminal "A" (Brown/Light Green wire) and ground.
- Between CMP sensor harness connector terminal "B" (Blue/Orange wire) and power.
- Between CMP sensor harness connector terminal "B" (Blue/Orange wire) and ground.
If continuity is present, repair short circuit in suspect wire or replace wire harness.