Diagnostic Test

TEST FOR INTERMITTENT CONDITION
1. Turn the ignition on.
2. With the scan tool, record and erase DTCs.
3. Turn the ignition off and remove the key from the ignition.
4. Close all doors and arm the VTSS and wait two minutes.
5. Disarm the VTSS turn the ignition on.
6. Turn the ignition on and with the scan tool, read DTCs.
  Does the scan tool display B1A38-SECURITY TRANSMITTER SENSOR CIRCUIT HIGH ?
  
  Yes
  - Go to step 2
  No
  - The conditions that caused this code to set are not present at this time. Using the SYSTEM WIRING DIAGRAMS as a guide, inspect the wiring and connectors.
  - Perform the BODY VERIFICATION TEST. Refer to DTC-Based Diagnostics/MODULE, Front Control (FCM) - Standard Procedure
CHECK THE (A645) INTRUSION TRANSMITTER SENSOR SIGNAL CIRCUIT SHORT TO VOLTAGE

Fig 1: Checking Intrusion Transmitter Sensor Signal Circuit Short To Voltage
Courtesy of CHRYSLER LLC
1. Turn the ignition off.
2. Disconnect the Intrusion Sensor Transmitter connector
3. Disconnect the Intrusion Transceiver Module connector.
4. Turn the ignition on.
5. Measure for voltage between chassis ground and the (A645) Intrusion Transmitter Sensor Signal circuit at the Intrusion Transceiver Module connector.
  Is there any voltage present?
  
  Yes
  - Repair the (A645) Intrusion Transmitter Sensor Signal circuit for a short to voltage.
  - Perform the BODY VERIFICATION TEST. Refer to DTC-Based Diagnostics/MODULE, Front Control (FCM) - Standard Procedure
  No
  - Replace the Intrusion Transceiver Module in accordance with the Service Information.
  - Perform the BODY VERIFICATION TEST. Refer to DTC-Based Diagnostics/MODULE, Front Control (FCM) - Standard Procedure