Information Bus: Testing and Inspection

ECM Data Line

1. If all components are not accessible with a scan tool, check for an open in the ORN (461) wire between ALDL connector, terminal M and S200.
2. If a single component is not accessible with a scan tool, check for an open in the ORN (461) wire between S200 and the component. If the wire is OK, refer to Electronic Control Module diagnosis, ABS diagnosis and 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 the DK GRN (835) wire between ALDL connector, terminal J and S233.
2. If a single component is not accessible with a scan tool, check for an open in the DK GRN (835) wire between S233 and the component. If the wire is OK, refer to STEERING CONTROL section for Redundant Steering Controls diagnosis.