Diagnostic Instructions
| • | Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure. |
| • | Review Strategy Based Diagnosis for an overview of the diagnostic approach. |
| • | Diagnostic Procedure Instructions provides an overview of each diagnostic category. |
Diagnostic Fault Information
Circuit | Short to Ground | Open/High Resistance | Short to Voltage | Signal Performance |
|---|---|---|---|---|
Inclination Sensor B+ | 1 | 1 | -- | -- |
Intrusion Sensor B+ | 2 | 2 | -- | -- |
Inclination/Intrusion Sensor Armed Signal | 1, 2 | 1, 2 | 1, 2 | -- |
Inclination Sensor Signal | 1 | 1 | 1 | -- |
Intrusion Sensor Signal | 2 | 2 | 2 | -- |
1. Inclination Sensor Malfunction 2. Intrusion Sensor Malfunction | ||||
Circuit/System Description
The intrusion sensor detects movement within the vehicle while parked. B+ is supplied to the inclination sensor at all times and the body control module (BCM) arms the sensor using the armed signal circuit. If movement is detected while armed, BCM is informed via the intrusion sensor alarm on circuit. The BCM will then send a signal to the rear (auxiliary) body control module (RBCM) to sound the content theft alarm.
Reference Information
Schematic Reference
Theft Deterrent System Schematics
Connector End View Reference
Description and Operation
Content Theft Deterrent (CTD) Description and Operation
Electrical Information Reference
Scan Tool Reference
Control Module References for scan tool information
Circuit/System Testing
- Ignition OFF, disconnect the harness connector at the intrusion sensor.
- Ignition ON, verify a test lamp illuminates between the B+ circuit terminal A and ground.
- Ignition OFF, disconnect the X7 harness connector at the BCM.
- Ignition ON, test for less than 1 volt between the following signal circuit terminals and ground:
- Test for infinite resistance between the following signal circuit terminals and ground:
- Test for less than 2 ohms of resistance between the signal circuit terminal 15 at the BCM and the signal circuit terminal C at the inclination sensor.
- Test for less than 2 ohms of resistance between the signal circuit terminal 12 at the BCM and the signal circuit terminal B at the inclination sensor.
- Ignition OFF, connect the X7 harness connector at the BCM. Disconnect the X3 harness connector at the BCM and the X1 harness connector at the RBCM.
- Ignition ON, test for less than 1 volt between the signal circuit terminal B9 and ground.
- Test for infinite resistance between the signal circuit terminal B9 and ground.
- Test for less than 2 ohms of resistance between the signal circuit terminal B9 at the RBCM and the signal circuit terminal 7 at the BCM.
- If all circuits test normal, test or replace the intrusion sensor.
| ⇒ | If the test lamp does not illuminate, test the B+ circuit for a short to ground or an open/high resistance. |
| • | Signal circuit terminal 12 |
| • | Signal circuit terminal 15 |
| ⇒ | If greater than the specified range, test the signal circuit for a short to ground. |
| • | Signal circuit terminal 12 |
| • | Signal circuit terminal 15 |
| ⇒ | If less than the specified value, test the signal circuit for a short to ground. |
| ⇒ | If greater than the specified range, test the signal circuit for an open/high resistance. |
| ⇒ | If greater than the specified range, test the signal circuit for an open/high resistance. |
| ⇒ | If the greater than the specified range, test the signal circuit for a short to ground. |
| ⇒ | If less than the specified value, test the signal circuit for a short to ground. |
| ⇒ | If greater than the specified range, test the signal circuit for an open/high resistance. |
Repair Instructions
Perform the Diagnostic Repair Verification after completing the diagnostic procedure.
| • | Control Module References for BCM and RBCM replacement, setup, and programming |
