FOUR-LAYER PID OBSERVATION RECORD
Original STEP Diagnostics worksheet. Offline interpretation, no vehicle commands.
No universal decoding formula or acceptance limit.

VEHICLE AND PARAMETER
Vehicle configuration:
Responding module / network:
Service or mode / PID or data identifier:
Exact displayed label / definition source and revision:
Tool / application / version / connection state:
Operating condition / timestamp / original export:

1. RAW DECODE
Raw response and data bytes, or unavailable:
Byte order / signedness / matching formula and reference:
Decoded value / engineering unit:
Already decoded by tool or export? Do not decode twice.

2. UNIT CONVERSION
Original unit / display unit / export unit:
Applied conversion / source:
Original value / converted value:

3. SOFTWARE ADJUSTMENT
Enabled factor / offset / documented software scope:
Original value / adjusted value:
Effect on export verified? Evidence or unresolved:

4. GRAPH AXIS
Axis units / lower and upper limits / auto or manual:
Screenshot and original data-file references:

COMPARISON
Same parameter / module / operating condition confirmed?
Applicable criterion / evidence:
Unresolved mismatch / next verification / owner:
Repeat: preserve earlier entry and identify what changed.

Fictional arithmetic only for standard Mode01 PID0C:
Simplified response 41 0C 0F A0 -> data 0FA0 hex -> 4000 decimal -> 1000 rpm.
Do not divide a display or export already reporting 1000 rpm by four again.
This is not a vehicle measurement or normal-idle specification.