GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Oldsmobile 🢒 2000 🢒 Intrigue 🢒 Body and Accessories 🢒 Theft Deterrent 🢒 Diagnostic System Check - Instrument Cluster

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. The symptom list in Symptoms will determine the correct diagnostic procedure to use.

    3.

  3. The presence of DTCs which begin with "U" indicate that loss of Class 2 communications has occurred.

    4.

  4. The presence of DTCs which begin with "U" indicate some other module is not communicating. The specified procedure will compile all the available information before tests are performed.

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 control modules:
    3. • The instrument panel cluster (IPC)
    • The body control module (BCM)
    • The powertrain control module (PCM)
    • The electronic brake control module (EBCM)
    • The inflatable restraint sensing and diagnostic module (SDM)

Does the scan tool communicate with control modules listed above?

Go to Step 3

Go to Scan Tool Does Not Communicate with Class 2 Device in Data Link Communications

3

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

    • The instrument panel cluster (IPC)
    • The body control module (BCM)
    • The powertrain control module (PCM)
    • The electronic brake control module (EBCM)
    • The inflatable restraint sensing and diagnostic module (SDM)

Does the scan tool display any DTCs for the control modules listed above?

Go to Step 4

Go to Symptoms

4

Does the scan tool display any other 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 B1000?

Go to Diagnostic System Check - Body Control System in Body Control System

Go to Diagnostic Trouble Code (DTC) List/Type