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
1. Measure the voltage between terminal 9 of the data link connector and body ground.

Specification :approximately B+


2. Is voltage within specification?










Check the Ground Circuit for the Diagnosis
1. Check for continuity between terminal 5 of the data link connector and body ground.
2. Is there continuity?