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No Response From Pcm (Powertrain Control Module) (GPEC): Notes

WARNING: This page is about a different car, the 2009 Dodge Caliber. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Powertrain Control Module (GPEC) - Circuit Schematic
GC0100541Courtesy of CHRYSLER LLC

For complete wiring diagrams, refer to SYSTEM WIRING DIAGRAMS .

Possible Causes 
(A931) FUSED B(+) CIRCUIT OPEN OR SHORTED
(Z925) GROUND CIRCUIT OPEN
(F202) IGNITION SW OUTPUT CIRCUIT OPEN OR SHORTED
(D65) CAN C BUS (+) CIRCUIT OPEN
(D64) CAN C BUS (-) CIRCUIT OPEN
POWERTRAIN CONTROL MODULE