Test Description

The number below refers to the step number on the diagnostic table.

DTC P0568

Step	Action	Values	Yes	No
1	Did you perform the Diagnostic System Check - Vehicle?	-	Go to Step 2	Go to Diagnostic System Check - Vehicle
2	Install a scan tool. Turn ON the ignition, with the engine OFF. Turn the cruise On/Off control switch ON. With the scan tool, observe the Cruise Resume/Accel. Switch parameter. Does the Cruise Resume/Accel. Switch parameter display On?	-	Go to Step 3	Go to Diagnostic Aids
3	Turn OFF the ignition. Disconnect the cruise control switch connector. Turn ON the ignition, with the engine OFF. With the scan tool, observe the Cruise Resume/Accel. Switch parameter. Does the Cruise Resume/Accel. Switch parameter display On?	-	Go to Step 4	Go to Step 5
4	Test the cruise control resume/accel switch signal circuit for a short to voltage. Did you find and correct the condition?	-	Go to Step 9	Go to Step 6
5	Inspect for poor connections at the harness connector of the cruise control switch. Did you find and correct the condition?	-	Go to Step 9	Go to Step 8
6	Inspect for poor connections at the harness connector of the engine control module (ECM). Did you find and correct the condition?	-	Go to Step 9	Go to Step 7
7	Replace the ECM. Did you complete the replacement?	-	Go to Step 9	-
8	Replace the cruise control switch. Did you complete the replacement?	-	Go to Step 9	-
9	Use the scan tool in order to clear the DTCs. Operate the vehicle within the Conditions for Setting the DTC. Does the DTC reset?	-	Go to Step 2	System OK