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

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 or due to a total malfunction of the class 2 serial data circuit. The specified procedure will determine the particular condition.

    2.

  2. Determining if their are any actuator malfunction codes.

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 sunroof actuator (Power Roof).

Does the scan tool communicate with the sunroof actuator module?

Go to Step 3

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

3

Select the Sunroof (Power Roof) actuator display DTCs function on the scan tool.

Does the scan tool display any DTCs?

Go to Diagnostic Trouble Code (DTC) List

Go to Symptoms - Roof