Page 366 - Understanding Automotive Electronics

2735 | CH 10 Page 353 Tuesday, March 10, 1998 1:27 PM

DIAGNOSTICS 10

Figure 10.12
Engine Data
Display

FPO

and modem for a telephone link to a network that collects and routes GM-
CAMS information.
The GM system also features a mainframe computer system at the
General Motors Information Center (GMIC) that contains a master database
that includes the most recent information relating to repair of applicable GM
cars. This information, as well as computer software updates, is relayed
throughout the network. Mechanics can also obtain diagnostic assistance by
calling the GM-CAMS Customer Support Center.
When using the GM-CAMS, the mechanic enters the vehicle
identification number (VIN) via the terminal. The computer responds by
displaying a menu in which several choices are presented. To select a particular
choice the technician touches the portion of the display associated with that
choice. Next, the computer displays an additional menu of further choices; this
continues until the mechanic has located the desired choice.

UNDERSTANDING AUTOMOTIVE ELECTRONICS 353