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*No Response From ECM (Engine Control Module) - Diesel: Notes

WARNING: This page is about a different car, the 2007 Dodge Sprinter. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Engine Control Module Circuit Schematic
GC0065450Courtesy of CHRYSLER LLC

For complete wiring diagrams refer to SYSTEM WIRING DIAGRAMS article.

Possible Causes 
ENGINE CONTROL MODULE POWER AND GROUND
CAN C BUS (+) CIRCUIT OPEN
CAN C BUS (-) CIRCUIT OPEN
ENGINE CONTROL MODULE