PRE-SCAN AND POST-SCAN COMPARISON RECORD
Original STEP worksheet; use current vehicle-specific procedures.
Vehicle / case reference:
Applicable manufacturer instruction / revision:
Pre-scan report / timestamp / actual repair stage / tool / scope:
Post-scan report / timestamp / actual repair stage / tool / scope:
Repeat this block for each system compared:
  Module / exact DTC / displayed category or status before:
  Module / exact DTC / displayed category or status afterward:
  Both / before only / afterward only / not comparable:
  Coverage limitation / evidence reference:
  Related work / diagnostic interpretation / next check:
Required calibration / learn / inspection / functional check:
Completion evidence for each required operation:
Original concern verification and evidence:
Remaining open item / owner / next action:
Release decision is separate and follows applicable requirements.