DTC U0021-Can B Bus (+) Circuit Open: Notes

Fig 1: CAN B Bus Circuit Diagram

Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.

For a complete wiring diagram  , refer to appropriate SYSTEM WIRING DIAGRAMS article.

• When Monitored: 

  With the ignition on and battery voltage between 10 and 16 volts. 

• Set Condition: 

  The FCM detects the (D55) CAN B Bus (+) circuit is open.