Logic Flow Chart

Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.

Check Conditions 

• The power supply mode of electric motor switch is ON.
• The PHEV-ECU power supply voltage is between 10 and 16.5 volts.

Judgment Criterion 

The PHEV-ECU sets DTC U0121 when it cannot communicate with the ASC-ECU via CAN correctly.