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Home >> Jeep >> 2014 >> Wrangler Sahara, Standard Trans >> Repair and Diagnosis >> External Pages >> Different car >> Section 227 ((Intrusion Transceiver Module (ITM) - Electrical Diagnostics)) >> DTC Troubleshooting >> B1A3D-00-Siren Battery Tamper/Loss Of Power Supply >> Diagnostic Test

Diagnostic Test

WARNING: This page is about a different car, the 2016 Jeep Wrangler and 2015 Jeep Wrangler. However, it is still accessible from the selected car via links, so may be relevant.
  1. INSPECT SIREN HARNESS 
    1. Inspect the wiring harness to the siren for any signs of tampering or intermittent condition.

      Were there any problems found?

      Yes 

      • Repair wiring as necessary.
      • Perform the BODY VERIFICATION TEST. Refer to STANDARD PROCEDURE .

      No 

      • Go To  2
  2. CHECK FOR AN ACTIVE DTC 
    1. Turn the ignition off and remove the key from the ignition.
    2. Lock and close all doors to allow the VTSS to go from pre-arm to armed status and wait one minute.
    3. Disarm the VTSS.
    4. Turn the ignition on.
    5. With the scan tool, read DTCs.

      Does the scan tool display this DTC as active?

      Yes 

      • Go To  3

      No 

      • Test complete, the condition or conditions that originally set this DTC are not present at this time. Using the wiring diagrams as a guide, check all related splices and connectors for signs of water intrusion, corrosion, pushed out or bent terminals, and correct pin tension.
      • Perform the BODY VERIFICATION TEST. Refer to STANDARD PROCEDURE .
  3. CHECK THE (A412) FUSED B(+) CIRCUIT AT THE SIREN 
    Fig 1: Checking Fused B(+) Circuit For Open
    GC0131855Courtesy of CHRYSLER GROUP, LLC
    1. Turn the ignition off.
    2. Disconnect the Siren connector.
    3. Using a 12-volt test light connected to ground, check the (A412) Fused B(+) circuit at the siren connector.

      Does the test light illuminate brightly?

      Yes 

      • Go To  4

      No 

      • Repair the (A412) Fused B(+) circuit for an open. Inspect the related fuse. If the fuse is open, check the circuit for a short to ground.
      • Perform the BODY VERIFICATION TEST. Refer to STANDARD PROCEDURE .
  4. CHECK THE (Z905) GROUND CIRCUIT AT THE SIREN 
    Fig 2: Checking Ground Circuit For Open
    GC0131856Courtesy of CHRYSLER GROUP, LLC
    1. Using a 12-volt test light connected to 12-volts, check the (Z905) Ground circuit at the siren connector.

      Does the test light illuminate brightly?

      Yes 

      • Replace the Siren in accordance with the Service Information.
      • Perform the BODY VERIFICATION TEST. Refer to STANDARD PROCEDURE .

      No 

      • Repair the (Z905) Ground circuit for an open.
      • Perform the BODY VERIFICATION TEST. Refer to STANDARD PROCEDURE .
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