Information Bus: Testing and Inspection

ECM DATA LINE
1. If all components are not accessible with a scan tool, check for an open in CKT 461 between DLC terminal "M" and S237.
2. If a single component is not accessible with a scan tool, check for an open in CKT 461 between S237 and the component. If the wire is OK, refer to Computers and Controls for Engine Control Module diagnosis, Brakes and Traction Control for ABS diagnosis and to Driver Information Center/Electronic Compass diagnosis.

E & C DATA LINE
1. If all components are not accessible with a scan tool, check for an open in CKT 835 between DLC terminal "J" and S225.
2. If a single component is not accessible with a scan tool, check for an open in CKT 835 between S225 and the component.