knock sensor replacement

Sonyps307 · 03-23-2011, 10:50 PM

You have to find the KS wire coming from the ECU harness. There are three ECU harnesses connected to the ECU, the one that has the KS wire is the harness in the middle, it's the only two transparent wires there on the middle harness. Even if it's not on the middle ECU harness, you should be able to find because it's the only two transparent wires out of all those three harness wires (for all MK3yrs). DO NOT cut the two wires at the harness, cut it at the furthest point away from the ECU harness (where the harness electrical tape ends and where you start to see the color wires for the first time). You should have about 5 to 6 inches of KS wire on the ECU harness after you cut at where the electrical tape ends.

03-23-2011, 10:50 PM	#6
Sonyps307 Lexus & 550's Join Date: May 2010 Location: Baltimore Posts: 526	You have to find the KS wire coming from the ECU harness. There are three ECU harnesses connected to the ECU, the one that has the KS wire is the harness in the middle, it's the only two transparent wires there on the middle harness. Even if it's not on the middle ECU harness, you should be able to find because it's the only two transparent wires out of all those three harness wires (for all MK3yrs). DO NOT cut the two wires at the harness, cut it at the furthest point away from the ECU harness (where the harness electrical tape ends and where you start to see the color wires for the first time). You should have about 5 to 6 inches of KS wire on the ECU harness after you cut at where the electrical tape ends.