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No Response From ITM (Intrusion Transceiver Module): Notes

WARNING: This page is about a different car, the 2009 Jeep Liberty. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: ITM (INTRUSION TRANSCEIVER MODULE) CIRCUIT SCHEMATIC
GC0102369Courtesy of CHRYSLER LLC

For complete wiring diagrams refer to SYSTEM WIRING DIAGRAMS .

Possible Causes 
(A412) FUSED B (+) (I.O.D.) CIRCUIT OPEN OR SHORTED
(Z919) GROUND CIRCUIT OPEN
(D264) AND (D265) CAN INTERIOR BUS (125K) CIRCUITS OPEN
INTRUSION TRANSCEIVER MODULE