Pinpoint Test B : The Alarm System Does Not Activate From The Intrusion Sensor: Notes
WARNING: This page is about a different car, the 2018 Lincoln Navigator. However, it is still accessible from the selected car via links, so may be relevant.
The Alarm System Does Not Activate From The Intrusion Sensor
Refer to Remote Keyless Entry and Alarm for schematic and connector information.
Normal Operations and Fault Conditions
REFER to:DESCRIPTION AND OPERATION .
BCM DTC Fault Trigger Conditions
| DTC | Description | Fault Trigger Conditions |
|---|---|---|
| B109F:01 | Intrusion Sensor Module: General Electrical Failure | Sets when the BCM detects a short to ground from the intrusion sensor LIN circuit. |
| B109F:02 | Intrusion Sensor Module: General Signal Failure | Sets when the BCM detects a communication fault with the intrusion sensor. |
| B109F:08 | Intrusion Sensor Module: Bus Signal / Message Failure | Sets when the BCM detects a communication fault with the intrusion sensor. |
| B109F:97 | Intrusion Sensor Module: Component or System Operation Obstructed or Blocked | Set by the BCM when the intrusion sensor is blocked, has an internal wiring fault between the intrusion sensor module and ultrasonic pulse producers, or has stopped working. |
| B109F:9A | Intrusion Sensor Module: Component or System Operating Conditions | Sets when the BCM detects a communication fault with the intrusion sensor. |
| B11D9:09 | Vehicle Battery: Component Failure | Set by the BCM when a battery failure is detected. |
Possible Sources
- Wiring, terminals or connectors
- Intrusion sensor
- BCM
Visual Inspection and Diagnostic Pre-checks
Verify the BCM fuse 11 (5A) is OK.