GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Cadillac 🢒 2001 🢒 Catera 🢒 Body and Accessories 🢒 Stationary Windows 🢒 Diagnostic System Check - Stationary Windows

Test Description

The number(s) below refer to the step number(s) on the diagnostic table.

  1. Lack of communication may be due to a partial malfunction of the class 2 serial data circuit. The specified procedure will determine the particular condition.

    2.

  2. The symptom table will determine the correct diagnostic procedure to use.

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

  1. Turn ON the ignition, with the engine OFF.
  2. Attempt to establish communication with the following:
    3. • HVAC Control Module
    • Memory Seat Module (MSM)

Does the scan tool communicate with the modules?

Go to Step 3

Go to Scan Tool Does Not Communicate with Keyword Data Line in Data Link Communications

3

Select the display DTCs function on the scan tool for the following modules:

    • HVAC Control Module
    • MSM

Does the scan tool display DTCs 19,32,33, or 34?

Go to Diagnostic Trouble Code (DTC) List

Go to Symptoms - Stationary Windows