Knock Sensor (KS)

KS is located on cylinder block. Before continuing diagnosis, check fitness of engine, quality of fuel and basic spark timing. Faults in sensor or circuit should set a service code. See QUICK TEST 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.