Code 1-4-3 Or 4-3-3 (No Front/Rear Knock Sensor Signal)

Disconnect knock sensor connector and jumper terminals. Measure resistance between knock sensor terminal No. 2 (Green/Gray wire) and terminal No. 11 (Green wire) or terminal No. 29 (Brown/Orange wire), depending upon whether front or rear knock sensor is being checked. If zero ohms is present, replace knock sensor. Tighten sensor to 15 ft. lbs. (20 N.m).