Dodge Ram 2004 - Fcm - Bus Shorted to Battery; Fcm - Bus Shorted to Ground

Symptom List:
FCM - BUS SHORTED TO BATTERY
FCM - BUS SHORTED TO GROUND
Test Note: All symptoms listed above are diagnosed using the same tests.
The title for the tests will be FCM - BUS SHORTED TO
BATTERY.
When Monitored and Set Condition:
FCM - BUS SHORTED TO BATTERY
When Monitored: Continuously
Set Condition: Anytime the FCM detects a short to battery on the PCI Bus circuit.
FCM - BUS SHORTED TO GROUND
When Monitored: Continuously
Set Condition: Anytime the FCM detects a short to ground on the PCI Bus circuit.
POSSIBLE CAUSES
INTERMITTENT CONDITION
TEST ACTION APPLICABILITY
1 NOTE: For this code to be active, the DRB will not be able to communicate
with any modules on the vehicle (except the PCM/ECM).
NOTE: Clear the code. If this code continues to set and the DRB can still
communicate with the FCM, it will be necessary to replace the FCM.
WARNING: WHEN THE ENGINE IS OPERATING, DO NOT STAND IN A
DIRECT LINE WITH THE FAN. DO NOT PUT YOUR HANDS NEAR THE
PULLEYS, BELTS OR FAN. DO NOT WEAR LOOSE CLOTHING.
NOTE: The conditions that set the DTC are not present at this time. The
following list may help in identifying the intermittent condition.
With the engine running at normal operating temperature, wiggle the wiring
harnesses. This is to try and duplicate the complete bus failure condition.
Refer to any Technical Service Bulletins (TSB) that may apply.
Visually inspect the related wiring harness. Look for any chafed, pierced, pinched, or
partially broken wires.
Visually inspectthe related wiringharness connectors. Look for broken, bent, pushed
out, or corroded terminals.
Were any of the above conditions present?
All
Yes → Repair as necessary.
Perform BODY VERIFICATION TEST - VER 1.
No → Test Complete.
256
COMMUNICATION