After a service disconnect was refitted, the vehicle refuses to go READY.
The HV interlock loop is open, so the BMS refuses to close the contactors.
Suggested test plan
- Inspect all HV connectors and the service disconnect.
- Verify interlock continuity.
- Re-seat and re-test READY.
- Repair the open interlock circuit.
Safety: High voltage can be lethal. Only trained technicians may work on an EV. Use rated PPE and follow the manufacturer isolation procedure. This is an educational model only.
The interlock loop exists to protect technicians. Never bypass it; find the unseated connector instead.