Data Link Connector: Description and Operation

PURPOSE
Communication link to Powertrain Control Module (PCM)

Technician can access inputs and memory including:
- Sensor input values
- Diagnostic Trouble Codes (DTC's) stored in memory
- Last deactivation cause (i.e.. speed control last shut off by; speed control switch, brake switch or no crank sensor signal).

Technician can actuate most PCM output devices.

NOTE: Monitoring inputs, reading memory -- other than codes -- and actuating output devices can only be accomplished through the use of a scan tool. SEE TESTING AND INSPECTION.