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?














Detecting condition






Inspection procedures
Check for Continuity in the Diagnosis Line
1. Disconnect the connector from the ABS control module.
2. Check for continuity between terminals 7 of the ABS control module connector and 1 of the data link connector.
3. Is there continuity?






Check the power source of ABS control module
1. Disconnect the connector from the ABS control module.
2. Turn the ignition switch ON, measure the voltage between terminal 3 of the ABS control module harness side connector and body ground.

Specification :approximately B+


3. Is voltage within specification?










Check for poor ground
1. Check for continuity between terminal 5 of the data link connector and ground point.