2007 Liberty KJ Factory Service Manual 8 - ELECTRICAL

*ALARM TRIPS ON ITS OWN

For a complete wiring diagram Refer to Section 8W



Possible Causes
  
VTSS RELATED WIRING
  
IGNITION RUN RUN/START
  
DOOR
  
HOOD SECURITY SWITCH
  
FLIPPER GLASS
  
LIFTGATE/SWINGATE
  
INTRUSION TRANSCEIVER MODULE (ITM)
  



Diagnostic Test

1. CHECK THE LAST ALARM CAUSED BY STATE WITH THE SCAN TOOL

Turn the ignition on.
With the scan tool in BCM, select Data Display and look for any of the following VTA Triggers indicated as causing the symptom:

Does the scan tool indicate that any of the above triggered the VTA?

Yes


No

2. INSPECT FOR A HOOD AJAR


Is this an export vehicle equipped with a hood ajar switch?

Yes


No

3. ATTEMPT TO TRIP THE ALARM VIA THE HOOD AJAR SWITCH

Remove the ignition key (but keep in hand).
Lock the vehicle and close all doors, the liftgate, and the hood.
Allow the VTSS to arm.
Lightly tap on hood near ajar switch to simulate wind and noise vibration.

Did the VTSS trip to the alarming state?

Yes


No

4. TEST FOR AN INTERMITTENT CONDITION

NOTE: The condition that caused the alarm is not present at this time. The following list may help you in identifying the cause of the intermittent condition.


Refer to any Technical Service Bulletins (TSB) that may apply.
Visually inspect related wiring harnesses. Look for chafed, pierced, pinched, or partially broken wires.
Visually inspect the related wiring harness connectors. Look for loose connections, broken, bent, pushed out, or corroded terminals.

Were any of the above conditions present?

Yes


No