Symptom
PAS not detected
PAS sensor
Possible causes
General, component-based causes – not a manufacturer-specific statement.
- Magnet ring wrong orientation/gap
- PAS sensor or cable fault
- Assist level/setting
Safe test steps
- Magnet ring orientation and gap (typically a few mm).
- Signal change while pedalling, using the known pinout.
Workshop reference values
- No general documented measurement value – manufacturer service documentation required.
Repair approach
- Adjust or replace magnet ring/sensor.
Tools needed
- Digital multimeter (CAT III, fused inputs)
- Basic hand tools, insulated screwdrivers
Safety
- For tests with a spinning wheel use a secure work stand with the driven wheel raised.