6. Check Knock Sensor Shield Circuit For Open And Short

1. Turn ignition switch OFF.
2. Disconnect knock sensor harness connector.
3. Check harness continuity between knock sensor terminal 2 and ground.

   Refer to WIRING DIAGRAM.

   1. Continuity should exist. 
4. Also check harness for short to power.

OK or NG 

1. OK: GO TO 8 .
2. NG: GO TO 7.