GM Service Manual Online
For 1990-2009 cars only

Step

Action

Values

Yes

No

Schematic Reference: Theft Deterrent System Schematics

Connector End View Reference: Theft Deterrent System Connector End Views

Important: Before attempting to diagnose the inclination sensor, ensure that the Intrusion Sensor Step 1, and Step 2 is enabled in the Dash Integration Module (DIM) Set Options menu.

DEFINITION: After arming, the content theft deterrent (CTD) system does not enter alarm mode when there is motion inside the vehicle.

1

Did you perform the Diagnostic System Check - Vehicle?

--

Go to Step 2

Go to Diagnostic System Check - Vehicle

2

Were you sent here from Content Theft Deterrent (CTD) Alarm Mode Inoperative?

--

Go to Step 3

Go to Content Theft Deterrent (CTD) Alarm Mode Inoperative

3

  1. Turn the ignition OFF.
  2. Disconnect the intrusion sensor harness connector.
  3. Probe the intrusion sensor battery positive voltage circuit at the intrusion sensor harness connector with a test lamp that is connected to a good ground.

Does the test lamp illuminate?

--

Go to Step 4

Go to Step 8

4

With a DMM, measure the voltage of the intrusion sensor armed signal circuit at the intrusion sensor harness connector.

Is the voltage near the specified value?

12 V

Go to Step 5

Go to Step 6

5

Test the intrusion sensor alarm on signal circuit for the following conditions:

    • A short to voltage
    • A short to ground
    • An open
        Refer to Circuit Testing and Wiring Repairs .

Did you find and correct the condition?

--

Go to Step 12

Go to Step 7

6

Test the intrusion sensor armed signal circuit for an open or a short to ground. Refer to Circuit Testing and Wiring Repairs .

Did you find and correct the condition?

--

Go to Step 12

Go to Step 10

7

Inspect for a loose or poor connection at the harness connector of the intrusion sensor. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs .

Did you find and correct the condition?

--

Go to Step 12

Go to Step 9

8

Repair the intrusion sensor battery positive voltage circuit. Refer to Wiring Repairs .

Did you correct the condition?

--

Go to Step 12

--

9

Replace the intrusion sensor. Refer to Theft Deterrent Sensor Replacement .

Did you correct the condition?

--

Go to Step 12

Go to Step 10

10

Inspect for a loose or poor connection at the harness connector of the rear integration module (RIM). Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs .

Did you find and correct the condition?

--

Go to Step 12

Go to Step 11

11

Replace the RIM. Refer to Control Module References for replacement, setup, and programming.

Did you complete the replacement?

--

Go to Step 12

--

12

Operate the system in order to verify the repair.

Did you correct the condition?

--

System OK

Go to Step 3