No Serial Communication (Export)

Test 1:

Test 2 - 5:

Test 6:

SYMPTOM
NO SERIAL COMMUNICATION (EXPORT ONLY)

WHEN MONITORED
Continuously while the VTSS is armed.

SET CONDITION
If the Intrusion Transceiver Module does not receive messages from the Siren.

POSSIBLE CAUSES
- Intermittent condition
- Open fused B+ circuit
- Siren signal control circuit open
- Siren signal control circuit short to ground
- Intrusion transceiver module
- Open ground circuit
- VTSS siren