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• When Monitored: • Set Condition: Possible Causes (A645) INTRUSION TRANSMITTER SENSOR SIGNAL CIRCUIT SHORTED TO VOLTAGE INTRUSION TRANSCEIVER MODULE Diagnostic Test 1. TEST FOR INTERMITTENT CONDITION Turn the ignition on. With the scan tool, record and erase DTC’s. Turn the ignition off and remove the key from the ignition. Close all doors and arm the VTSS and wait 2 minutes. Disarm the VTSS turn the ignition on. Turn the ignition on and with the scan tool, read DTC’s. Does the scan tool display B1A38–SECURITY TRANSMITTER SENSOR CIRCUIT HIGH ? Yes >> Go To 2 No >> The conditions that caused this code to set are not present at this time. Using the wiring diagram/sche- matic as a guide, inspect the wiring and connectors. Perform BODY VERIFICATION TEST – VER 1 (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL 2. CHECK THE (A645) INTRUSION TRANSMITTER SENSOR SIGNAL CIRCUIT SHORT TO VOLTAGE Turn the ignition is off. Disconnect the Intrusion Sensor Transmitter connector Disconnect the Intrusion Transceiver Module connector. Turn the ignition on. Measure for voltage between chassis ground and the (A645) Intrusion Is there any voltage present? Yes >> Repair the (A645) Intrusion Transmitter Sensor Signal circuit for a short to voltage. Perform BODY VERIFICATION TEST – VER 1 (Refer to 8 - CONTROL MODULES - STANDARD PROCEDURE) No >> Replace the Intrusion Transceiver Module in accordance with the Service Information. Perform BODY VERIFICATION TEST – VER 1 (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL 8Q - 48 VEHICLE THEFT SECURITY - ELECTRICAL DIAGNOSTICS LX |