Inspection and Repair
When vehicle is on, if the low-voltage circuit of the vehicle is normal but the high-voltage is absent, use multimeter to inspect whether the main contactor has failed.
| Possible Causes | Corrective & Preventive Measures |
| The coil of main contactor is blown or in bad condition, leading to poor heat dissipation. | Replace main contactor or attempt to repair coil. |
| Welding connection broken | Re-weld the coil connection of main contactor. |