Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Basic Control
When the quick charge connector is connected to the quick charge port and press the start switch of quick charger, the on-board charger transmits a EV system activation request signal to VCM. VCM then activates the F/S relay, M/C relay, and F/S CHG relay.
Next, VCM determines the target charge power based on the Li-ion battery chargeable power signal received from the Li-ion battery controller and the on-board charger chargeable power signal received from the onboard charger. And then VCM sends the maximum charge power signal to the on-board charger.
The on-board charger converts the Maximum charge power signal to a charge current request signal and transmits it to the quick charger.
Simultaneously, the on-board charger activates the quick charge relay and VCM activates system main relay 1 and system main relay 2. Consequently the quick charge starts.
When the charge amount reaches the prescribed amount and VCM receives the Li-ion battery charge completion signal from the Li-ion battery controller, VCM stops the charging.
- Even if the Li-ion battery remaining energy does not reach the predetermined level, VCM may stop the charge control after a certain period of time.
- When the Li-ion battery temperature reaches 60°C (140°F) or higher, VCM temporarily stops quick charging and enters the wait status.
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.
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