General Motors Tech2 User Guide
42
RS-232 DB9 adapter connections
RS-232 Loopback Adapter
The loopback adapter (P/N 3000112) has an 8-pin RJ45 connector that attaches to the
Tech2 RS-232 port. It is used to perform the Tech2 self test.
DLC Loopback Adapter
Various Tech2 applications require the DLC loopback adapter (P/N 3000109), which has a
Burndy cable connection end and a VCI DB-26 connection end.
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