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Home >> Geo >> 1993 >> Prizm Base, Standard >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - System/Component Tests >> Engine Sensors & Switches >> KNOCK SENSOR (PRIZM LSi)

KNOCK SENSOR (PRIZM LSi)

  1. Check knock sensor resistance using ohmmeter. Measure resistance between knock sensor terminal and engine block. Knock sensor, located on rear of engine block, has Black wire connector. Replace sensor if resistance is not one megohm.
  2. To check knock sensor operation, remove connector from knock sensor. Connect DVOM between knock sensor terminal and ground. Adjust voltmeter to 200 millivolts on AC scale. Tap on engine block near knock sensor, and note reading. Replace knock sensor if no reading is obtained.
NOTE: For MAP sensor on Prizm, also see Figure and Figure .
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