E 350 1 Ton Van V10-6.8L VIN S (1997)
Both networks can be connected to the New Generation Star (NGS) Tester at one connector called the Data Link Connector (DLC). This makes
troubleshooting these systems easier by allowing one tester to be able to diagnose and control any module on the two networks from one
connector. The DLC can be found under the instrument panel directly below the steering column.
The ISO 9141 Link network does not permit inter-module communication. When the NGS Tester communicates to modules on the ISO 9141 Link
network, the NGS Tester must ask for all information; the modules cannot initiate communications.
FAULT TOLERANCE-SCP
The SCP will remain operational even with the severing of one of the bus wires. Communications will also continue if one of the bus wires is
shorted to chassis ground or battery positive voltage (B+) or a termination resistor is lost. This faulted condition is detected and reported to the
host by the module's network bus interface circuits.
FAULT TOLERANCE-DIAGNOSTIC COMMUNICATIONS NETWORK
Unlike the SCP, the ISO 9141 Link will not function if the wire is shorted to chassis ground or battery positive voltage (B+). Also, if one of the
modules on the ISO 9141 Link network loses power or shorts internally, communications to that module will fail.
