| CAUTION | If ECM replacement is instructed in following testing, always ensure ECM connectors and ground circuit are okay. If either are suspect, repair and repeat testing to confirm ECM malfunction. |
Circuit Description
The CMP sensor is a pick-up coil mounted in outer corner of left cylinder head, just below valve cover. A 1-tooth signal plate is mounted to outer camshaft. DTC is set when either no cranking or engine running signal is received by ECM from sensor. Possible causes are
- Open or short in CMP sensor circuit.
- CMP sensor.
- Starter.
- ECM.