For 1990-2009 cars

Important: Before attempting to diagnose the intrusion sensor, ensure that the intrusion sensor is ENABLED, via the intrusion sensor defeat switch.

Step | Action | Values | Yes | No
--- | --- | --- | --- | ---
Schematic Reference: Theft Deterrent System Schematics Connector End View Reference: Theft Deterrent System Connector End Views
1 | Did you perform the Diagnostic System Check - Vehicle? | -- | Go to Step 2 | Go to Diagnostic System Check - Vehicle
2 |

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

Does the test lamp illuminate?

--

Go to Step 3

Go to Step 7

3 | With a DMM, measure the voltage of the inclination sensor input circuit at the inclination sensor harness connector. Is the voltage near the specified value? | B+ | Go to Step 4 | Go to Step 5
4 | Test the inclination sensor enable circuit for a short to ground, or an open. Refer to Circuit Testing and Wiring Repairs . Did you find and correct the condition? | -- | Go to Step 11 | Go to Step 6
5 | Test the inclination sensor input 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 11 | Go to Step 9
6 | Inspect for a loose or poor connection at the harness connector of the inclination sensor. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs. Did you find and correct the condition? | -- | Go to Step 11 | Go to Step 8
7 | Repair the inclination sensor battery positive voltage circuit. Refer to Wiring Repairs . Did you complete the repair? | -- | Go to Step 11 | --
8 | Replace the inclination sensor. Refer to 79078 . Did you correct the condition? | -- | Go to Step 11 | Go to Step 9
9 | 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 11 | Go to Step 10
10 | Replace the RIM. Refer to Control Module References for replacement, setup, and programming. Did you complete the replacement? | -- | Go to Step 11 | --
11 | Operate the system in order to verify the repair. Did you correct the condition? | -- | System OK | Go to Step 2