| CAUTION | If ECM replacement is instructed in following testing, always ensure ECM harness connector and ground circuit are okay. If either are suspect, repair and repeat testing to confirm ECM malfunction. |
Circuit Description
The CMP sensors consist of a 3-tooth signal plate and a pick-up coil. The signal place is mounted on camshaft. DTC is set when no camshaft position signal is received by ECM from CMP sensor during cranking. DTC is also set when no camshaft position signal is received by ECM from CMP sensor with engine speed of 600 RPM or more. Possible causes are
- CMP sensor open or short circuit.
- CMP sensor.
- Starter.
- ECM.