Camshaft Position (CMP) Sensor
- CMP sensor is located inside distributor. If a fault is present in CMP sensor, Code 11 may be set in ECM memory. If Code 11 is set, perform DTC 11 - CMP SENSOR in the TESTS W/CODES article.
- To test CMP sensor, remove distributor. Leave wiring harness connected. Using a voltmeter, connect negative lead to ground and alternately connect positive lead to 1-degree signal terminal and 120/180-degree signal terminal. See CMP SENSOR INPUT SIGNAL TERMINALS table. See Fig 1 .
- Measure voltages at both terminals while rotating distributor by hand. Voltage should fluctuate between 0-5 volts. If either voltage signal does not fluctuate between 0-5 volts, check harness for short or open circuit. If no problems are found, replace CMP sensor.
CMP SENSOR INPUT SIGNAL TERMINALS
| Application | 1-Degree Signal | 120/180-Degree Signal |
|---|---|---|
| Sentra | Terminal No. 4 | Terminal No. 3 |