| 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
Knock sensors are located on front and rear left side of cylinder block. Sensor generates voltage when engine block vibrates due to knocking. DTC is set if there is a ECM malfunction for knock control. Possible cause is
- ECM.