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Home >> Volvo >> 1995 >> 960 4D Sedan, AW30-43 >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - System/Component Tests >> Ignition System >> Timing Control Systems >> Detonation (Knock) Sensors

Detonation (Knock) Sensors

  1. Turn ignition off and remove fuse No. 24. Connect Breakout Box (999-3070 ) between ECU and ECU connector. See Figure . Turn ignition on.
  2. Depending upon which knock sensor is being checked, disconnect front or rear knock sensor connector and connect a jumper wire between knock sensor connector terminals. See Fig 1 .
  3. Connect an ohmmeter between breakout box terminals No. 2 and terminal No. 11 or 29 (depending on which sensor is being checked). Reading should be zero ohms. If reading is correct, replace knock sensor. Tighten knock sensor to 15 ft. lbs. (20 N.m).
Fig 1: Knock Sensor Connector Terminals (Typical)
G95B31238Courtesy of VOLVO CARS OF NORTH AMERICA.
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