Knock Sensor (KS)
KS is located on cylinder block. Faults in sensor or circuit should set a service code. See Quick Test procedure in TESTS W/CODES EEC-IV article in the ENGINE PERFORMANCE Section. If no service code has been set, see CIRCUIT TEST DG in TESTS W/CODES EEC-IV article for additional sensor specifications and circuit testing procedures. Sensor is tested by substitution or by manually generating a knock to ensure sensor will set a service code.