| 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 sensors (2) are pick-up coils (G1 and G2 signals) mounted next to 1-tooth signal plates in distributor. DTC is set when no CMP sensor signal is received by ECM with engine speed at 550 RPM or more sensor. Possible causes are
- CMP sensor open or short circuit.
- CMP sensor.
- ECM.