Test Description
WARNING: This page is about a different car, the 2003 Saturn Vue. However, it is still accessible from the selected car via links, so may be relevant.
The numbers below refer to the step numbers on the diagnostic table.
- 2: Lack of communication may be due to a malfunction in the class 2 serial data circuit. The specified procedure will determine the particular condition.
- 4: The presence of DTCs which begin with "U" indicates that some other module is not communicating. The specified procedure will compile all the available information before tests are performed.
Diagnostic System Check - Cruise Control
| Step | Action | Yes | No |
|---|---|---|---|
| 1 | Install a scan tool. Does the scan tool power up? |
Go to Step 2 | Go to Scan Tool Does Not Power Up in Data Link Communications |
| 2 |
|
Go to Step 3 | Go to Scan Tool Does Not Communicate with Class 2 Device and to Scan Tool Does Not Communicate with Keyword Data Line in Data Link Communications |
| 3 | Select the DTCs function on the scan tool for the following modules:
Does the scan tool display any DTCs? |
Go to Step 4 | Go to Symptoms - Cruise Control |
| 4 | Does the scan tool display any DTCs which begin with a "U"? | Go to Diagnostic Trouble Code (DTC) List in Data Link Communications | Go to Step 5 |
| 5 | Does the scan tool display DTC P560, P0562, P0563, P621, P2500, or P2501? | Go to Diagnostic Trouble Code (DTC) List in Engine Electrical | Go to Diagnostic Trouble Code (DTC) List |