Diagnostic System Check - Data Link Communications. Buick Park Avenue 1998

For 1990-2009 cars only

Makes 🢒 Buick 🢒 1998 🢒 Park Avenue 🢒 Body and Accessories 🢒 Instrument Panel, Gauges, and Console 🢒 Diagnostic System Check - Data Link Communications

Step	Action	Value(s)	Yes	No
1	Connect a scan tool. Turn the ignition switch to RUN. Attempt to establish communications with the vehicle. Does the scan tool communicate?	--	Go to Step 2	Go to Data Link Communications System Check
2	Display the DTCs with the scan tool. Are there any Loss of Class 2 Serial Data Communications DTCs set? (Loss of Class 2 Serial Data Communications DTCs have the form of UXXX.)	--	Go to Diagnostic Trouble Code (DTC) List/Type	Go to Data Link Communications System Check

Step

Action

Value(s)

Yes

Connect a scan tool.
Turn the ignition switch to RUN.
Attempt to establish communications with the vehicle.

Does the scan tool communicate?

Go to Step 2

Go to Data Link Communications System Check

Display the DTCs with the scan tool.

Are there any Loss of Class 2 Serial Data Communications DTCs set? (Loss of Class 2 Serial Data Communications DTCs have the form of UXXX.)

Go to Diagnostic Trouble Code (DTC) List/Type

Go to Data Link Communications System Check