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Home >> Mercedes Benz >> 1994 >> C220 >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Tests W/Codes - HFM-SFI System >> Self-Diagnostic System >> Retrieving Diagnostic Trouble Codes >> Using Impulse Counter
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Using Impulse Counter

  1. Connect impulse counter to data link connector. See PREPARATION FOR TEST WITH IMPULSE COUNTER SCAN TOOL .
  2. Turn ignition ON.
  3. Press start button for 2-4 seconds.
  4. Read and record DTC readout.
  5. Press start button again for 2-4 seconds.
  6. Read and record DTC readout.
  7. Repeat steps  5 and  6 until the first DTC appears.