KNOCK SENSOR (KS) INSPECTION[L3]

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Note

•  Perform the following test only when directed.

Resistance Inspection

1.  Turn the ignition switch to LOCK.

2.  Disconnect the KS connector.

3.  Measure the resistance between the KS terminals A and B using an ohmmeter.

•  If not as specified, replace the KS.

•  If the KS is okay, but PID value is out of specification, perform the “Circuit Open/Short Inspection”.

Circuit Open/Short Inspection

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1.  Disconnect the PCM connector. (See PCM REMOVAL/INSTALLATION[L3].)

2.  Inspect the following wiring harnesses for open or short. (Continuity check)

Open circuit

•  If there is no continuity, the circuit is open. Repair or replace the harness.

―  KS terminal A and PCM terminal 2Q

―  KS terminal B and PCM terminal 2R

Short circuit

•  If there is continuity, the circuit is shorted. Repair or replace the harness.

―  KS terminal A and power supply

―  KS terminal A and body ground

―  KS terminal B and power supply

―  KS terminal B and body ground