KNOCK SENSOR (KS) INSPECTION

Resistance Inspection

Note

• Before performing the following inspection, make sure to follow the troubleshooting flowchart. (See Troubleshooting Procedure.)

1. Disconnect the KS connector.

2. Measure the resistance between KS terminals A and B.

• If not within the specification, replace the KS. (See KNOCK SENSOR (KS) REMOVAL/INSTALLATION.)

• If the monitor item condition/specification (reference) is not within the specification, even though the KS resistance is within the specification, perform the "Circuit Open/Short Inspection".

KS resistance

120-280 kilohms

Circuit Open/Short Inspection

1. Disconnect the PCM connector.

2. Disconnect the KS connector.

3. Inspect the following wiring harnesses for open or short. (Continuity inspection)

Open circuit

• If there is no continuity in the following wiring harnesses, there is an open circuit. Repair or replace the wiring harness.

– KS terminal A and PCM terminal 1T

– KS terminal B and PCM terminal 1F

Short circuit

• If there is continuity in the following wiring harnesses, there is a short circuit. Repair or replace the wiring harness.

– KS terminal A and body ground

– KS terminal A and power supply

– KS terminal B and body ground

– KS terminal B and power supply