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?
> Check the ground circuit for the diagnosis.
> 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?
> Repair an open in the wire between terminal 5 of the data link connector and ground point.