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Inspection Using Scan Tool MB991502

CAUTION: To prevent damage to scan tool MB991502, always turn the ignition switch to the LOCK (OFF) position before connecting or disconnecting scan tool MB991502.
  1. Connect scan tool MB991502 to the data link connector.
  2. Turn the ignition switch to the ON position.
  3. Carry out inspection by means of the data list. If there is an abnormality, check and repair the chassis harness and components. See DATA LIST REFERENCE TABLE  under SYMPTOM PROCEDURES.
  4. Re-check using scan tool MB991502 and check to be sure that the abnormal input and output have returned to normal because of the repairs.
  5. Erase the Diagnostic Trouble Codes (DTC's).
  6. Turn the ignition switch to the LOCK (OFF) position.
  7. Disconnect scan tool MB991502 from the data link connector.
  8. Start the engine again and do a test drive to confirm that the problem is eliminated.