Knock Sensor: Testing and Inspection

Inspection (On vehicle)
1. Connect a voltmeter neg. (-) terminal to the MEN terminal of the data link connector.




2. Connect the data link connector terminals TEN and GND by using a jumper wire.
3. Turn the ignition switch to ON.




4. Lightly tap the engine hanger with a hammer.
5. Verify that the voltmeter indicator moves.
6. Turn the ignition switch to OFF.

Inspection With Self-Diagnosis Checker
1. Connect the special service tool (SST) (System Selector and Self-Diagnosis Checker) to data link connector.




2. Set switch A to position of Self-Diagnosis Checker.
3. Set SYSTEM SELECT position 1 and TEST SW to SELF-TEST of System Selector.
4. Turn the ignition switch to ON.
5. Lightly tap the engine hanger with a hammer.
6. Verify that the monitor lamp illuminates for approx. 0.5 seconds.
7. Turn the ignition switch to OFF.