Communication With Any System Is Not Possible

Communication with Hi scan (pro) is not possible
(Communication with any system is not possible)

DETECTING CONDITION:

INSPECTION PROCEDURES
CHECK THE POWER SUPPLY CIRCUIT FOR THE DIAGNOSIS
Measure the voltage between terminal 9 of the data link connector and body ground.
Specification: approximately B+
Is voltage within specification?
YES
^ Check the ground circuit for the diagnosis
NO
^ Repair an open in the wire. Check and replace fuse (15A) )from the engine compartment junction block.





CHECK THE GROUND CIRCUIT FOR THE DIAGNOSIS
Check for continuity between terminal 5 of the data link connector and body ground. Is there continuity?
NO
^ Repair an open in the wire between terminal 5 of the data link connector and ground point.