Not reliably. Bread position, thickness and the chosen grill width can produce different browning. Look at the actual arrangement before diagnosing a component.
What the observation means
A tray placed off-centre or a half-width setting can leave some slices outside the main heated area. This differs from a consistent new cold region under the correct full-width arrangement.
A useful next step
Use ordinary observations already made and record the layout. There is no need to burn further batches as a test. If performance has changed consistently, report the position and mode; do not open the grill housing or touch elements to compare them.
Manuals and supporting guidance
Model-specific instructions take priority. These references support the practical principles discussed here; they do not diagnose your appliance.