Communication With Scan-Tool Is Not Possible. (Communication With Any System Is Not Possible)

Communication with Scan-Tool 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.