Possible Causes
WARNING: This page is about a different car, the 2003 Dodge Dakota. However, it is still accessible from the selected car via links, so may be relevant.
ATTEMPT TO COMMUNICATE WITH THE CTM
OPEN GROUND CIRCUIT(S)
OPEN FUSED IGNITION SWITCH OUTPUT CIRCUITS
OPEN FUSED B+ CIRCUIT
OPEN PCI BUS CIRCUIT
INSTRUMENT CLUSTER