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Home >> Chrysler >> 2009 >> 300 Signature Series >> Repair and Diagnosis >> External Pages >> Different car >> Section 58 (Vehicle Theft Security System - Electrical Diagnostics) >> Vehicle Theft Security - Electrical Diagnostics >> DTC Troubleshooting >> B1A42-Security Transmitter Sensor Circuit Shorted Together >> Diagnostic Test

Diagnostic Test

WARNING: This page is about a different car, the 2006 Dodge Magnum, 2006 Dodge Charger, and 2006 Chrysler 300. However, it is still accessible from the selected car via links, so may be relevant.
  1. 1)  DETERMINING IF DTC IS CURRENT 
    NOTE: Diagnose any related Communication DTC(s) before continuing.

    With a scan tool, read and record DTC(s).

    With the scan tool, clear DTC(s).

    Turn the ignition off and remove the key from the ignition.

    Lock and close all doors to allow the VTSS to go from pre-arm to armed status and wait one minute.

    Disarm the VTSS.

    Using the scan tool, read DTC(s).

    Does the DTC reset? 

    Yes 

    1. Go To  2).

    No 

    1. DTC is not active at this time. Test complete.
    2. Perform BODY VERIFICATION TEST - VER 1 (Refer to ELECTRICAL/ELECTRONIC CONTROL MODULES - STANDARD PROCEDURE)
  2. 2)  

    2)  INTRUSION SENSOR TRANSMITTER 

    Disconnect the Intrusion Sensor Transmitter connector.

    NOTE: Check connectors - Clean/repair as necessary.

    Connect a known good Intrusion Sensor Transmitter.

    Turn the ignition on.

    With the scan tool, clear DTC(s).

    Turn the ignition off and remove the key from the ignition.

    Lock and close all doors to allow the VTSS to go from pre-arm to armed status and wait one minute.

    Disarm the VTSS.

    Using the scan tool, read DTC(s).

    Does the DTC reset? 

    Yes 

    1. Go To  3).

    No 

    1. Replace the original Intrusion Sensor Transmitter.
    2. Perform BODY VERIFICATION TEST - VER 1 (Refer to ELECTRICAL/ELECTRONIC CONTROL MODULES - STANDARD PROCEDURE)
  3. 3)  

    3)  CHECK THE (A645) INTRUSION TRANSMITTER SENSOR SIGNAL WIRE FOR A SHORT TO (G945) INTRUSION TRANSMITTER SENSOR GROUND 

    Fig 1: Measuring Resistance Between Intrusion Transmitter Sensor Signal & Intrusion Transmitter Sensor Ground Circuit
    GC0040874Courtesy of DAIMLERCHRYSLER CORP.

    Turn the ignition is off.

    Disconnect the Intrusion Sensor Transceiver connector.

    Disconnect the Intrusion Transceiver Module connector.

    Measure the resistance between the (A645) Intrusion Transmitter Sensor Signal circuit to the (G945) Intrusion Transmitter Sensor Ground circuit in the Intrusion Sensor Transmitter connector.

    Is the resistance below 5.0 ohms? 

    Yes 

    1. Repair the (A645) Intrusion Transmitter Sensor Signal circuit for a short to the (G945) Intrusion Transmitter Sensor Ground circuit.
    2. Perform BODY VERIFICATION TEST - VER 1 (Refer to ELECTRICAL/ELECTRONIC CONTROL MODULES - STANDARD PROCEDURE)

    No 

    1. Replace the Intrusion Transceiver Module in accordance with the Service Information.
    2. Perform BODY VERIFICATION TEST - VER 1 (Refer to ELECTRICAL/ELECTRONIC CONTROL MODULES - STANDARD PROCEDURE)
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