DIAGNOSTIC ITEM 19: Diagnose when the scan tool cannot receive the data sent by A/C-ECU <vehicles with A/C> or heater control unit <vehicles without A/C>: Notes

CAUTION: When servicing a CAN bus line, ground yourself by touching a metal object such as an unpainted water pipe. If you fail to do so, a component connected to the CAN bus line may be damaged.

Fig 1: CAN-B Communication Circuit

Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.