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Home >> Chrysler >> 2009 >> Sebring Base, 2D Convertible, ED3 >> Repair and Diagnosis >> Accessories & Equipment >> Anti-Theft Systems >> Intrusion Transceiver Module (ITM) - Electrical Diagnostics >> DTC Troubleshooting >> U110D-Lost Communication With Security Siren >> Diagnostic Test

Diagnostic Test

  1. INTERMITTENT DTC 
    1. With the scan tool, erase the current Intrusion Transceiver Module DTC's.
    2. Turn the ignition off.
    3. Arm the VTSS and wait 1 minute.
    4. Disarm the VTSS and turn the ignition on.

      Does the scan tool display the same DTC?

      Yes 

      • Go To step  2

      No 

  2. (A414) FUSED B+ OPEN 
    Fig 1: Checking Siren Fused B(+) Circuit At Siren Connector
    GC0123644Courtesy of CHRYSLER LLC
    1. Gain access to the VTSS Siren.
    2. Disconnect the Siren connector.
    3. Using a 12-volt test light connected to ground, check the (A414) Fused B(+) circuit in the Siren connector.

      Does the test light illuminate brightly?

      Yes 

      • Go To step  3

      No 

  3. (Z905) GROUND CIRCUIT OPEN 
    Fig 2: Checking Siren Ground Circuit At Siren Connector
    GC0123645Courtesy of CHRYSLER 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 

      • Go To step  4

      No 

  4. FAULTY SIREN 
    Fig 3: Identifying Siren Signal Control Circuit At Siren Connector
    GC0123655Courtesy of CHRYSLER LLC
    1. Use the DRBIII® and set up as follows:
      • Use the Scope input cable CH7058, Cable to Probe adapter CH7062, and the red and black test probes.
      • Connect the scope input cable to the channel one connector on the DRBIII®. Attach the red and black leads and the cable to probe adapter to the scope input cable.
      • Select DRBIII® Stand-alone.
      • Select lab scope.
      • Select Live.
      • Select 12 volt square wave.
      • Press F2 for Scope.
      • Press F2 and use the down arrow to set voltage range to 20 volts. Press F2 again when complete.
    2. Disconnect the Siren connector.
    3. Connect the black lead to the chassis ground. Connect the red lead to the (D96) Siren Signal Control circuit in the Siren connector.
    4. Close all doors and arm the VTSS.
    5. Observe the voltage displayed on the DRBIII® Lab Scope.

      Is there a voltage square wave present 1 to 2 seconds?

      Yes 

      No 

      • Go To step  5
  5. (D96) SIREN SIGNAL CONTROL CIRCUIT SHORT TO BATTERY 
    Fig 4: Checking Siren Signal Control Circuit For Short To Voltage
    GC0123656Courtesy of CHRYSLER LLC
    1. Disconnect the Siren harness connector.
    2. Measure the voltage of the (D96) Siren Signal Control circuit.

      Is there any voltage present?

      Yes 

      No 

      • Go To step  6
  6. (D96) SIREN SIGNAL CONTROL CIRCUIT SHORT TO GROUND 
    Fig 5: Checking Siren Signal Control Circuit For Short To Ground
    GC0123657Courtesy of CHRYSLER LLC
    1. Disconnect the Siren harness connector.
    2. Disconnect the Intrusion Transceiver Module harness connector.
    3. Measure the resistance between ground and the (D96) Siren Signal Control circuit.

      Is the resistance above 5.0 ohms?

      Yes 

      • Go To step  7

      No 

  7. (D96) SIREN SIGNAL CONTROL CIRCUIT OPEN 
    Fig 6: Checking Siren Signal Control Circuit For Open
    GC0123658Courtesy of CHRYSLER LLC
    1. Disconnect the Intrusion Transceiver Module harness connector.
    2. Measure the resistance of the (D96) Siren Signal Control circuit between the Intrusion Transceiver Module and the Siren connector.

      Is the resistance below 5.0 ohms?

      Yes 

      No