| 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 ("G" signal) consist of a signal plate and pick-up coil. The "G" signal plate has one tooth on its outer circumference and is built into distributor. 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.