Bus Shorted to Ground (FCM)

BUS SHORTED TO GROUND (FCM)

WHEN MONITORED
Continuously

SET CONDITION
Anytime the FCM detects a short to ground on the PCI Bus circuit.

POSSIBLE CAUSES
- Intermittent short to ground on the (D25) PCI BUS circuit

DIAGNOSTIC TEST

1. INTERMITTENT CONDITION

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).
- 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 inspect the related wiring harness connectors. Look for broken, bent, pushed out, or corroded terminals.

Q: Were any of the above conditions present?

YES: Repair as necessary. Perform BODY VERIFICATION TEST - VER 1. Body Verification Test
NO: Test Complete.